Folding mechanism and inward-folding flexible screen mobile electronic terminal

Abstract

The present disclosure provides a folding mechanism, including an intermediate bracket, a left support plate, a right support plate, and a left rotating part and a right rotating part rotatably connected to the intermediate bracket. The intermediate bracket can make the left support plate and the right support plate and the left rotating part and the right rotating part synchronously rotate in the opposite direction through a synchronous reverse rotating mechanism. The end of the left support plate away from the intermediate bracket is connected to a first elastic element on the synchronous reverse rotating mechanism, and the end of the right support plate away from the intermediate bracket is connected to a second elastic element on the synchronous reverse rotating mechanism. At the same time, an inward-folding flexible screen mobile electronic terminal using the above-mentioned folding mechanism is provided. The present disclosure can realize the unfolding and inward-folding closure of the flexible screen. The left support plate and the right support plate can stably support the unfolded flexible screen. After the inward-folding closure, the bending part of the flexible screen can form a water drop shape to avoid damage to the screen. The stability and reliability are high, and the service life of the product is improved.

Description

Technical Field

[0001] The present disclosure relates to flexible screen electronic devices, and more particularly to a folding mechanism for an inward-folding flexible screen mobile electronic terminal and an inward-folding flexible screen mobile electronic terminal. Background Art

[0002] With the continuous progress of society and the rapid development of science and technology, electronic products are updated very quickly. Users have higher and higher requirements for the use of electronic products, resulting in more and more diversified functions of electronic products, and many new forms of electronic products have emerged. For example, mobile terminals such as smart phones and tablets with flexible screens will become the current research and development hotspots and new trends. For mobile terminals, flexible screens are an ideal and emerging screen. The mobile terminal is folded when carried and flattened when used to get double display, which meets the demand for large-screen display and can give people a sense of implicitness, maturity, and stability. At present, for mobile terminals with flexible screens, the problem that needs to be solved is how to design a folding mechanism to support and fold the flexible screen, reduce damage at the bend of the flexible screen, and increase the service life, so that the flexible screen can be better applied to mobile terminals. Summary of the invention

[0003] The purpose of the present disclosure is to provide a folding mechanism and an inward-folding flexible screen mobile electronic terminal, which can solve at least one of the above technical problems. The technical solution of the present disclosure is as follows:

[0004] A folding mechanism comprises an intermediate bracket, a left support plate, a right support plate, and a left rotating component and a right rotating component rotatably connected to the intermediate bracket. The intermediate bracket can make the left support plate and the right support plate and the left rotating component and the right rotating component rotate synchronously and oppositely through a synchronous reverse rotation mechanism. The left support plate and the right support plate are used to support the corresponding flexible screen. The end of the left support plate away from the intermediate bracket is connected to the first elastic element on the synchronous reverse rotation mechanism, and the end of the right support plate away from the intermediate bracket is connected to the second elastic element on the synchronous reverse rotation mechanism. As the flexible screen folds inward and closes, the end of the left support plate close to the intermediate bracket and the end of the right support plate close to the intermediate bracket can swing outward respectively to avoid the bending part of the flexible screen. As the flexible screen is unfolded and flattened, the left rotating component and the right rotating component can support the left support plate and the right support plate.

[0005] In some embodiments, the length of the left support plate and the length of the right support plate are substantially consistent with the length of the flexible screen, and a synchronous reverse rotation mechanism, a left rotating component, and a right rotating component are respectively provided at both ends of the middle bracket.

[0006] In some embodiments, the left rotating component includes a left rotating arm, the right rotating component includes a right rotating arm, and the middle bracket is provided with a first arc-shaped slide matching with the left rotating arm and a second arc-shaped slide matching with the right rotating arm. The left rotating arm has a first arc-shaped sliding portion matching with the first arc-shaped slide, and the right rotating arm has a second arc-shaped sliding portion matching with the second arc-shaped slide.

[0007] In some embodiments, the left rotating arm is located below the left support plate, and the right rotating arm is located below the right support plate. As the flexible screen is unfolded, the first arc-shaped sliding portion near the top of one end of the right support plate can support the right support plate, and the second arc-shaped sliding portion near the top of one end of the left support plate can support the left support plate. As the flexible screen folds inward and closes, the first arc-shaped sliding portion can be separated from the right support plate, and the second arc-shaped sliding portion can be separated from the left support plate.

[0008] In some embodiments, the middle bracket includes a first base, a first fixed block is arranged on the first base, a first arc slide and a second arc slide are arranged on the first fixed block, a first arc groove and a second arc groove are arranged on the first fixed block, and the end of the left support plate close to the middle bracket can slide against the first arc groove, and the end of the right support plate close to the middle bracket can slide against the second arc groove.

[0009] In some embodiments, the synchronous reverse rotation mechanism includes a left connecting seat, a right connecting seat, a left gear arranged on the left connecting seat, and a right gear arranged on the right connecting seat, a first elastic element is arranged on the left connecting seat, and a second elastic element is arranged on the right connecting seat, and the left gear and the right gear can rotate synchronously in the opposite direction.

[0010] In some embodiments, the first elastic element and the second elastic element are both C-type springs, the two ends of the first elastic element are fixed on the left connecting seat, the end of the left support plate away from the middle bracket is connected to the middle of the first elastic element, and the two ends of the second elastic element are fixed on the right connecting seat, and the end of the right support plate away from the middle bracket is connected to the middle of the second elastic element.

[0011] In some embodiments, a first rotating shaft and a first connecting block connected to the first elastic element are provided at one end of the left support plate away from the middle bracket, and a first avoidance groove cooperating with the first connecting block and a third arc groove cooperating with the first rotating shaft are provided on the left connecting seat.

[0012] In some embodiments, the synchronous reverse rotation mechanism also includes a first friction plate that cooperates with the left gear and the right gear, a first groove body that cooperates with the left support plate is provided on the left connecting seat, and a second groove body that cooperates with the right support plate is provided on the right connecting seat, and the rotation axis of the left rotating component coincides with the rotation axis of the left gear, and the rotation axis of the right rotating component coincides with the rotation axis of the right gear.

[0013] A mobile electronic terminal with an inward-folding flexible screen using the above-mentioned folding mechanism includes a flexible screen and a left casing and a right casing for placing the flexible screen, an intermediate bracket is located between the left casing and the right casing, a left rotating component is connected to the left casing, a right rotating component is connected to the right casing, and a synchronous reverse rotation mechanism is respectively connected to the left casing and the right casing. The left rotating component, the right rotating component and the synchronous reverse rotation mechanism can make the left casing and the right casing and the left support plate and the right support plate rotate synchronously in the opposite direction to allow the flexible screen to be unfolded and folded inwardly closed.

[0014] The beneficial effects of the present invention are as follows: the synchronous reverse rotation mechanism of the folding mechanism can make the left support plate and the right support plate and the left rotating component and the right rotating component rotate synchronously in the opposite direction, so that the left shell and the right shell rotate synchronously in the opposite direction, so as to realize the flexible screen being unfolded and folded inwardly and closed; when the flexible screen is unfolded and flattened, the left rotating component and the right rotating component can support the left support plate and the right support plate, so that the left support plate and the right support plate can stably support the flexible screen; when the flexible screen is folded inwardly and closed, the end of the left support plate away from the middle bracket can stretch and twist the first elastic element, and the end of the right support plate away from the middle bracket can stretch and twist the second elastic element. The bending part of the flexible screen can push the end of the left support plate close to the middle bracket and the end of the right support plate close to the middle bracket to swing outward respectively, so that the bending part of the flexible screen forms a water drop shape, and the total length of the flexible screen will not change, thus avoiding damage to the screen, etc., and will not cause tension and pressure in the length direction of the screen. The flatness of the flexible screen can be ensured during opening and use. The structure is compact and the volume is small, which can reduce the thickness of the product, etc. The opening and folding operations are convenient, and the stability and reliability are high, which increases the service life of the product and facilitates the flexible screen to be better applied to various mobile terminals such as mobile phones and tablets, thereby expanding the application and development of the product.

[0015] In addition, in the technical solution disclosed in the present invention, unless otherwise specified, the technical solution can be implemented by adopting conventional means in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the specific embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is an exploded view of a folding mechanism according to an embodiment of the present disclosure.

[0018] Figure 2It is a schematic diagram of the partial structure of a folding mechanism according to an embodiment of the present disclosure.

[0019] Figure 3 It is a schematic diagram of the partial structure of a folding mechanism according to an embodiment of the present disclosure.

[0020] Figure 4 For one embodiment of the present disclosure Figure 3 A partial enlarged view of point A in the middle.

[0021] Figure 5 It is a cross-sectional view of an inward-folding flexible screen mobile electronic terminal in an embodiment of the present disclosure in a flattened state.

[0022] Figure 6 It is a cross-sectional view of an inward-folding flexible screen mobile electronic terminal in an embodiment of the present disclosure in a flattened state.

[0023] Figure 7 It is a cross-sectional view of an inwardly folded flexible screen mobile electronic terminal in an inwardly folded closed state according to an embodiment of the present invention.

[0024] Figure 8 An exploded view of an inward-folding flexible screen mobile electronic terminal according to an embodiment of the present invention.

[0025] Fig. 9 This is a schematic diagram of the structure of an inward-folding flexible screen mobile electronic terminal in an unfolded state according to an embodiment of the present invention.

[0026] Fig.10 This is a schematic diagram of the structure of an inwardly folded flexible screen mobile electronic terminal in an inwardly folded closed state according to an embodiment of the present invention.

[0027] Description of the reference numerals in the accompanying drawings: intermediate bracket 1, first arc-shaped slide 101, second arc-shaped slide 102, first base 11, first fixing block 12, first arc-shaped groove 121, second arc-shaped groove 122, left rotating component 2, left rotating arm 21, first arc-shaped sliding portion 211, right rotating component 3, right rotating arm 31, second arc-shaped sliding portion 311, synchronous reverse rotation mechanism 4, first elastic element 41, second elastic element 42, left connecting seat 43, first slot body 43 1, first avoidance groove 432, third arc groove 433, right connecting seat 44, second groove body 441, second avoidance groove 442, fourth arc groove 443, left gear 45, right gear 46, first friction plate 47, transition gear 48, first mounting plate 49, first connecting plate 491, left supporting plate 5, first connecting block 51, first rotating shaft 52, right supporting plate 6, second connecting block 61, second rotating shaft 62, flexible screen 7, left housing 8, right housing 9. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are part of the embodiments of the present disclosure, rather than all of the embodiments, and are only used to explain the present disclosure, and are not used to limit the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0029] In the description of the present disclosure, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside", "two ends", "both sides", "bottom", "top" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present disclosure. In addition, the terms "first", "second", "superior", "inferior", "primary", "secondary" and the like are used for descriptive purposes only, and can simply be used to more clearly distinguish different components, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0031] See also Figures 1 to 10As shown, a folding mechanism and a mobile electronic terminal with an inner folding flexible screen 7 according to the present disclosure are schematically shown. The folding mechanism includes an intermediate bracket 1, a left support plate 5, a right support plate 6, a left rotating component 2 and a right rotating component 3. The left rotating component 2 and the right rotating component 3 are rotatably connected to the intermediate bracket 1 respectively. The left supporting plate 5 and the right supporting plate 6 are used to support the corresponding flexible screen 7. The intermediate bracket 1 can make the left rotating component 2 and the right rotating component 3 rotate synchronously in the opposite direction through a synchronous reverse rotation mechanism 4, and make the left supporting plate 5 and the right supporting plate 6 rotate synchronously in the opposite direction. When the flexible screen 7 is unfolded and flattened, the left rotating component 2 and the right rotating component 3 can support the left supporting plate 5 and the right supporting plate 6. The synchronous reverse rotation mechanism 4 is provided with a first elastic element 41 and a second elastic element 42, the end of the left support plate 5 away from the middle bracket 1 is connected to the first elastic element 41, and the end of the right support plate 6 away from the middle bracket 1 is connected to the second elastic element 42, the left support plate 5 can stretch and twist the first elastic element 41, and the end of the left support plate 5 close to the middle bracket 1 can swing around the end of the left support plate 5 away from the middle bracket 1, the right support plate 6 can stretch and twist the second elastic element 42, and the end of the right support plate 6 close to the middle bracket 1 can swing around the end of the right support plate 6 away from the middle bracket 1.

[0032] During use, the left rotating part 2 and the right rotating part 3 rotate synchronously in the opposite direction, and the synchronous reverse rotation mechanism 4 ensures that the left rotating part 2 and the right rotating part 3 rotate synchronously in the opposite direction, and the synchronous reverse rotation mechanism 4 can make the left support plate 5 and the right support plate 6 rotate synchronously in the opposite direction, so that the left side housing 8 and the right side housing 9 rotate synchronously in the opposite direction, and the flexible screen 7 is unfolded and folded inward. When the flexible screen 7 is unfolded, the left rotating part 2 and the right rotating part 3 can support the left support plate 5 and the right support plate 6, so that the left support plate 5 and the right support plate 6 stably support the flexible screen 7, ensuring the flatness of the flexible screen 7 during use. When the flexible screen 7 is folded inward and closed, the end of the left support plate 5 away from the middle bracket 1 can stretch and twist the first elastic element 41, and the end of the right support plate 6 away from the middle bracket 1 can stretch and twist the second elastic element 42. The bending part of the flexible screen 7 can push the end of the left support plate 5 close to the middle bracket 1 and the end of the right support plate 6 close to the middle bracket 1 to swing outward respectively, so that the bending part of the flexible screen 7 forms a water drop shape, and the total length of the flexible screen 7 does not change, avoiding damage to the screen, etc., and does not cause tension and pressure in the length direction of the screen, which can ensure the flatness of the flexible screen 7 during opening and use. In addition, the left support plate 5 and the right support plate 6 avoid the bending part of the flexible screen 7 by swinging, and the structure is compact and the volume is small, which can reduce the thickness of the product.

[0033] The length of the left support plate 5 and the length of the right support plate 6 are substantially consistent with the length of the flexible screen 7, and can support the unfolded flexible screen 7 more comprehensively and evenly, with higher stability and reliability. The left support plate 5 and the right support plate 6 fully support the middle part of the flexible screen 7 as much as possible. The two ends of the middle bracket 1 are respectively provided with a synchronous reverse rotation mechanism 4, a left rotating part 2 and a right rotating part 3, so that the force is more evenly applied, the structure is more stable and reliable, and there can be more left rotating parts 2 and right rotating parts 3.

[0034] The left rotating component 2 includes a left rotating arm 21, and the right rotating component 3 includes a right rotating arm 31. A first arcuate slide 101 and a second arcuate slide 102 are arranged on the intermediate bracket 1. The first arcuate slide 101 cooperates with the left rotating arm 21, and the second arcuate slide 102 cooperates with the right rotating arm 31. The left rotating arm 21 has a first arcuate sliding portion 211 that cooperates with the first arcuate slide 101, and the right rotating arm 31 has a second arcuate sliding portion 311 that cooperates with the second arcuate slide 102. The left rotating arm 21 rotates along the first arcuate slide 101 through the first arcuate sliding portion 211, and the right rotating arm 31 rotates along the second arcuate slide 102 through the second arcuate sliding portion 311. The structure is more compact and stable.

[0035] by Figure 5 For reference, the left rotating arm 21 is located below the left support plate 5, and the right rotating arm 31 is located below the right support plate 6. When the flexible screen 7 is unfolded, the first arc-shaped sliding portion 211 is close to the top of one end of the right support plate 6 to support the right support plate 6, and the second arc-shaped sliding portion 311 is close to the top of one end of the left support plate 5 to support the left support plate 5, so that the left support plate 5 and the right support plate 6 can stably support the flexible screen 7, ensuring the flatness of the flexible screen 7 during use, and the structure is more compact and stable. When the flexible screen 7 is folded inward and closed, the left rotating arm 21 and the right rotating arm 31 rotate in opposite directions synchronously, and the left support plate 5 and the right support plate 6 rotate in opposite directions synchronously, so that the first arc-shaped sliding part 211 and the right support plate 6 rotate in opposite directions synchronously and the second arc-shaped sliding part 311 and the left support plate 5 rotate in opposite directions synchronously, so that the first arc-shaped sliding part 211 is separated from the right support plate 6 and the second arc-shaped sliding part 311 is separated from the left support plate 5, and then the bending part of the flexible screen 7 can push the end of the left support plate 5 close to the middle bracket 1 and the end of the right support plate 6 close to the middle bracket 1 to swing outward respectively, so that the bending part of the flexible screen 7 forms a water drop shape.

[0036] The intermediate bracket 1 includes a first base 11, on which a first fixing block 12 is disposed. The first fixing block 12 and the first base 11 can be connected by snapping, gluing, welding, screwing, etc. The first curved slide 101 and the second curved slide 102 are disposed on the first fixing block 12, and usually the first curved slide 101 and the second curved slide 102 are integrally formed on the first fixing block 12. The first fixing block 12 is also provided with a first curved groove 121 and a second curved groove 122, and the end of the left support plate 5 close to the intermediate bracket 1 can slide against the first curved groove 121, and the end of the right support plate 6 close to the intermediate bracket 1 can slide against the second curved groove 122, so that the structure is more compact, stable, and reliable.

[0037] The synchronous reverse rotation mechanism 4 adopts a gear mechanism, including a left connecting seat 43 and a right connecting seat 44. The left connecting seat 43 and the right connecting seat 44 have basically the same structure. A left gear 45 is provided on the left connecting seat 43, and a right gear 46 is provided on the right connecting seat 44. The first elastic element 41 is provided on the left connecting seat 43, and the second elastic element 42 is provided on the right connecting seat 44. The left gear 45 and the right gear 46 have basically the same structure, and the left gear 45 and the right gear 46 can rotate synchronously in the opposite direction. The synchronous reverse rotation mechanism 4 also includes a first friction plate 47 that cooperates with the left gear 45 and the right gear 46. The first friction plate 47 is located at one end of the left gear 45 and the right gear 46. The first friction plate 47 can also be provided at both ends of the left gear 45 and the right gear 46 respectively. The left gear 45 and the right gear 46 can also correspond to one or two first friction plates 47 respectively. The first friction plate 47 provides damping friction for the rotation of the gear, that is, provides torsion for the entire mechanism, so that the flexible screen 7 is more stable in the unfolded state and the folded closed state. For example, in the unfolded state and the folded closed state, a certain external force needs to be applied to open and close, and the stability and reliability are higher.

[0038] Reference Figure 4 , Figure 5As shown, two transition gears 48 can also be set between the left connecting seat 43 and the right connecting seat 44. The four gears are connected in transmission in sequence, that is, the four gears are meshed in sequence, the two transition gears 48 are meshed, the left gear 45 is meshed with the transition gear 48 close to it, and the right gear 46 is meshed with the transition gear 48 close to it. The first friction plate 47 cooperates with the four gears respectively. The four gears can be installed on the end of the first base 11, one end of the four gears is respectively connected to the first mounting plate 49, and the other ends of the four gears are respectively connected to the end of the first fixed block 12. The first mounting plate 49 is connected to the first fixed block 12 through the first connecting plate 491. The first connecting plate 491 can be welded to the first mounting plate 49 and the first fixed block 12 respectively. The first mounting plate 49 and the first fixed block 12 can also be welded to the first base 11, which is equivalent to forming a gear box structure.

[0039] The rotation axis of the left rotating component 2 coincides with the rotation axis of the left gear 45, and the rotation axis of the right rotating component 3 coincides with the rotation axis of the right gear 46. During movement, there is no relative displacement between the moving gears and the slideway, housing, etc., and the synchronization is more accurate, safer, more stable and reliable.

[0040] The left connecting seat 43 is provided with a first slot body 431 matched with the left supporting plate 5, and the right connecting seat 44 is provided with a second slot body 441 matched with the right supporting plate 6, which makes the operation more convenient and the structure more compact and stable.

[0041] The first elastic element 41 and the second elastic element 42 have substantially the same structure. Figure 2 As shown, the first elastic element 41 and the second elastic element 42 are both C-type springs, and the C-type spring can also be a cross-shaped spring. The two ends or two bases of the first elastic element 41 are fixed on the left connecting seat 43, such as welding connection or using a pressure plate to fix the C-type spring, etc. The end of the left support plate 5 away from the middle bracket 1 is connected to the middle of the first elastic element 41, the two ends of the second elastic element 42 are fixed on the right connecting seat 44, and the end of the right support plate 6 away from the middle bracket 1 is connected to the middle of the second elastic element 42. The C-type spring has a simple structure and is easy to operate. When the flexible screen 7 is folded inward and closed, the end of the left support plate 5 close to the middle bracket 1 and the end of the right support plate 6 close to the middle bracket 1 swing outward respectively, and the first elastic element 41 can better withstand the tension and torsion of the left support plate 5 at the same time, and the first elastic element 41 can better withstand the tension and torsion of the right support plate 6 at the same time, which is more stable and reliable, and reduces damage to parts.

[0042] Reference Figure 3 , Figure 7As shown, the end of the left support plate 5 away from the middle bracket 1 is provided with a first rotating shaft 52 and a first connecting block 51 connected to the first elastic element 41, and the left connecting seat 43 is provided with a first avoiding groove 432 matched with the first connecting block 51 and a third arc groove 433 matched with the first rotating shaft 52. The first rotating shaft 52 rotates along the third arc groove 433, and the first connecting block 51 rotates in the first avoiding groove 432, so that the left support plate 5 rotates around the first rotating shaft 52, and the structure is more compact and stable, and the movement is more stable and reliable. Similarly, the end of the right support plate 6 away from the middle bracket 1 is provided with a second rotating shaft 62 and a second connecting block 61 connected to the second elastic element 42, and the right connecting seat 44 is provided with a second avoiding groove 442 matched with the second connecting block 61 and a fourth arc groove 443 matched with the second rotating shaft 62.

[0043] A mobile electronic terminal with an inner folding flexible screen 7 using the above folding mechanism comprises a flexible screen 7 and a left housing 8 and a right housing 9 for accommodating the flexible screen 7, an intermediate bracket 1 is located between the left housing 8 and the right housing 9, and a groove body matching with the flexible screen 7 is respectively arranged on the inner side of the left housing 8 and the inner side of the right housing 9, and the two halves of the flexible screen 7 are respectively fixed in the groove bodies of the left housing 8 and the right housing 9 by gluing or the like. The left rotating component 2 is connected to the left housing 8, the left rotating arm 21 can be connected to the left housing 8 by fasteners such as screws, the right rotating component 3 is connected to the right housing 9, the right rotating arm 31 can be connected to the right housing 9 by fasteners such as screws, the synchronous reverse rotating mechanism 4 is respectively connected to the left housing 8 and the right housing 9, the left connecting seat 43 can be connected to the right housing 9 by fasteners such as screws, and the right connecting seat 44 can be connected to the right housing 9 by fasteners such as screws. The left rotating part 2, the right rotating part 3 and the synchronous reverse rotating mechanism 4 of the folding mechanism can make the left supporting plate 5 and the right supporting plate 6 and the left housing 8 and the right housing 9 rotate synchronously in the opposite direction, so that the flexible screen 7 can be unfolded and folded inward to close.

[0044] The inner side of the left casing 8 and the inner side of the right casing 9 are respectively provided with grooves that cooperate with the folding mechanism. The folding mechanism is located below the flexible screen 7. When unfolded and used, the folding mechanism is completely hidden inside the product. When folded inwardly and closed, only the left casing 8, the right casing 9 and the first base 11 of the middle bracket 1 are exposed, which is safer, more stable and reliable.

[0045] Compared with the prior art, the advantages of the present invention are as follows: the synchronous reverse rotation mechanism 4 of the folding mechanism can make the left support plate 5 and the right support plate 6 and the left rotating component 2 and the right rotating component 3 rotate synchronously in the opposite direction, so that the left side shell 8 and the right side shell 9 rotate synchronously in the opposite direction, so as to realize the opening and folding of the flexible screen 7; when the flexible screen 7 is opened and flattened, the left rotating component 2 and the right rotating component 3 can support the left support plate 5 and the right support plate 6, so that the left support plate 5 and the right support plate 6 can stably support the flexible screen 7; when the flexible screen 7 is folded and closed, the end of the left support plate 5 away from the middle bracket 1 can stretch and twist the first elastic element 41, and the end of the right support plate 6 away from the middle bracket 1 can stretch and twist the second elastic element 42; the bending part of the flexible screen 7 can push the end of the left support plate 5 close to the middle bracket 1 and the end of the right support plate 6 close to the middle bracket 1 to swing outwards respectively, so that the bending part of the flexible screen 7 forms a water drop shape, and the total length of the flexible screen 7 will not change, thereby avoiding damage to the screen. etc., will not cause tension and pressure in the length direction of the screen, can ensure the flatness of the flexible screen 7 during opening and use, has a compact structure, small size, can reduce the thickness of the product, etc., and the left support plate 5 and the right support plate 6 avoid the bending part of the flexible screen 7 by swinging, has a compact structure, small size, can reduce the thickness of the product, etc.; the rotation axis of the left rotating part 2 coincides with the rotation axis of the left gear 45, and the rotation axis of the right rotating part 3 coincides with the rotation axis of the right gear 46. During movement, the moving gears and the slideway, the housing, etc. do not undergo relative displacement, and the synchronization is more accurate, safer, more stable and reliable; the first elastic element 41 and the second elastic element 42 adopt C-type springs, which have a simple structure and can better withstand tension and torsion at the same time, reducing damage to parts, etc.; thereby, opening, folding and other operations are convenient, stability and reliability are high, the service life of the product is improved, and the flexible screen 7 can be better applied to various mobile terminals such as mobile phones and tablets, thereby expanding the application and development of the product.

[0046] The above are only some embodiments of the present disclosure, which are only used to illustrate the technical solution of the present disclosure, rather than to limit it. It should be understood that, for those skilled in the art, without departing from the creative concept of the present disclosure, it is possible to make improvements or substitutions according to the above description, and all these improvements and substitutions should fall within the scope of protection of the claims attached to the present disclosure. In this case, all details can be replaced by equivalent elements, and the materials, shapes and sizes can also be arbitrary.

Claims

1. A folding mechanism, characterized in that: The invention comprises an intermediate bracket (1), a left support plate (5), a right support plate (6), and a left rotating component (2) and a right rotating component (3) rotatably connected to the intermediate bracket (1); the intermediate bracket (1) can cause the left support plate (5) and the right support plate (6) and the left rotating component (2) and the right rotating component (3) to rotate synchronously in the opposite direction through a synchronous reverse rotation mechanism (4); the left support plate (5) and the right support plate (6) are used to support a corresponding flexible screen (7); an end of the left support plate (5) away from the intermediate bracket (1) is connected to a first elastic element on the synchronous reverse rotation mechanism (4); The left support plate (5) and the right support plate (6) are connected to each other with a component (41), one end of the right support plate (6) away from the middle support (1) is connected to the second elastic element (42) on the synchronous reverse rotation mechanism (4); as the flexible screen (7) is folded inward and closed, one end of the left support plate (5) close to the middle support (1) and one end of the right support plate (6) close to the middle support (1) can be respectively swung outward to avoid the bending part of the flexible screen (7); as the flexible screen (7) is unfolded and flattened, the left rotating component (2) and the right rotating component (3) can support the left support plate (5) and the right support plate (6); The synchronous reverse rotation mechanism (4) comprises a left connecting seat (43), a right connecting seat (44), a left gear (45) arranged on the left connecting seat (43), and a right gear (46) arranged on the right connecting seat (44); the first elastic element (41) is arranged on the left connecting seat (43), the second elastic element (42) is arranged on the right connecting seat (44), and the left gear (45) and the right gear (46) are capable of synchronous reverse rotation; The two ends of the first elastic element (41) are fixed to the left connecting seat (43), one end of the left support plate (5) away from the intermediate bracket (1) is connected to the middle of the first elastic element (41), the two ends of the second elastic element (42) are fixed to the right connecting seat (44), and one end of the right support plate (6) away from the intermediate bracket (1) is connected to the middle of the second elastic element (42).

2. The folding mechanism according to claim 1, characterized in that: The length of the left support plate (5) and the length of the right support plate (6) are substantially consistent with the length of the flexible screen (7), and the synchronous reverse rotation mechanism (4), the left rotating component (2) and the right rotating component (3) are respectively provided at both ends of the intermediate bracket (1).

3. The folding mechanism according to claim 1, characterized in that: The left rotating component (2) comprises a left rotating arm (21), the right rotating component (3) comprises a right rotating arm (31), the intermediate bracket (1) is provided with a first arc-shaped slideway (101) matching with the left rotating arm (21) and a second arc-shaped slideway (102) matching with the right rotating arm (31), the left rotating arm (21) has a first arc-shaped sliding portion (211) matching with the first arc-shaped slideway (101), and the right rotating arm (31) has a second arc-shaped sliding portion (311) matching with the second arc-shaped slideway (102).

4. The folding mechanism according to claim 3, characterized in that: The left rotating arm (21) is located below the left supporting plate (5), and the right rotating arm (31) is located below the right supporting plate (6); as the flexible screen (7) is unfolded and flattened, the first arc-shaped sliding portion (211) is close to the top of one end of the right supporting plate (6) and can support the right supporting plate (6); the second arc-shaped sliding portion (311) is close to the top of one end of the left supporting plate (5) and can support the left supporting plate (5); as the flexible screen (7) is folded inward and closed, the first arc-shaped sliding portion (211) and the right supporting plate (6) can be separated, and the second arc-shaped sliding portion (311) and the left supporting plate (5) can be separated.

5. The folding mechanism according to claim 4, characterized in that: The intermediate bracket (1) comprises a first base (11), a first fixed block (12) is arranged on the first base (11), the first arc-shaped slideway (101) and the second arc-shaped slideway (102) are arranged on the first fixed block (12), the first fixed block (12) is provided with a first arc-shaped groove (121) and a second arc-shaped groove (122), an end of the left support plate (5) close to the intermediate bracket (1) can abut against the first arc-shaped groove (121) to slide, and an end of the right support plate (6) close to the intermediate bracket (1) can abut against the second arc-shaped groove (122) to slide.

6. The folding mechanism according to claim 1, characterized in that: A first rotating shaft (52) and a first connecting block (51) connected to the first elastic element (41) are provided at one end of the left supporting plate (5) away from the intermediate bracket (1), and a first avoiding groove (432) cooperating with the first connecting block (51) and a third arc groove (433) cooperating with the first rotating shaft (52) are provided on the left connecting seat (43).

7. The folding mechanism according to claim 1, characterized in that: The synchronous reverse rotation mechanism (4) further comprises a first friction plate (47) matched with the left gear (45) and the right gear (46); the left connecting seat (43) is provided with a first groove body (431) matched with the left support plate (5); the right connecting seat (44) is provided with a second groove body (441) matched with the right support plate (6); the rotation axis of the left rotating component (2) coincides with the rotation axis of the left gear (45); and the rotation axis of the right rotating component (3) coincides with the rotation axis of the right gear (46).

8. An inward-folding flexible screen mobile electronic terminal, characterized in that: The folding device comprises the folding mechanism described in any one of claims 1 to 7, and further comprises the flexible screen (7) and a left side housing (8) and a right side housing (9) on which the flexible screen (7) is mounted, the intermediate bracket (1) is located between the left side housing (8) and the right side housing (9), the left rotating component (2) is connected to the left side housing (8), the right rotating component (3) is connected to the right side housing (9), the synchronous reverse rotation mechanism (4) is connected to the left side housing (8) and the right side housing (9) respectively, the left rotating component (2), the right rotating component (3) and the synchronous reverse rotation mechanism (4) can make the left side housing (8) and the right side housing (9) and the left support plate (5) and the right support plate (6) rotate synchronously and reversely so that the flexible screen (7) is unfolded and folded inwardly.

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