An ultra-thin handheld externally-foldable flexible screen device

Abstract

The present invention relates to the technical field of manufacturing hand-held devices, and in particular to an ultra-thin hand-held externally foldable flexible screen device. The left folding body and the right folding body are assembled into one body with the transition connecting part. The flexible screen is adhesively fixed in cooperation by the left folding body and the right folding body, and passes over the transition connecting part in a non-adhesive state. The main part of the transition connecting part is a gear meshing mechanism, and the gear meshing mechanism includes a left gear, a left sliding arm, a right gear and a right sliding arm. During the screen folding process, the left gear and the right gear perform reverse rotational movements, while the left sliding arm and the right sliding arm respectively perform directional sliding movements independently. Thus, on the one hand, the folding radius of the screen can be effectively reduced, which is beneficial to realizing the ultra-thin design of the device; on the other hand, during the screen folding operation process, the flexible bending body always provides an elastic buffer pad for the flipping area of the flexible screen, so that obvious creases are not likely to appear on the flexible screen during the screen folding process.

Description

Technical Field

[0001] The present invention relates to the technical field of handheld device manufacturing, and in particular to an ultra-thin handheld outward-folding flexible screen device. Background Art

[0002] Mobile communication devices appeared thirty years ago, and due to factors such as battery and substrate upgrades, their appearance and size have evolved towards miniaturization. However, in the era of smart phones, in order to cater to users' viewing and gaming experience, large-screen phones have appeared on the market (some models of mobile phones have screens even exceeding 7 inches), and in order to take into account the convenience of storage, technology companies have developed flexible screens in recent years. Without affecting the normal use area of ​​the screen, the size of the screen can be reduced by folding, thus opening the era of smart foldable flexible screen phones.

[0003] According to relevant information, flexible screen folding mobile phones were mass-produced in 2018, and most technology companies have optimized the thickness of mobile phones after folding the screen as their primary research and development goal. In the existing technology, flexible screen folding mobile phones most often use U-shaped structures to ensure the smooth implementation of repeated folding of the screen, among which Samsung Z series products are the representative. However, the implementation of the U-shaped structure is difficult, and there are many feedback problems after it is actually put on the market, which are specifically reflected in: 1) The U-shaped structure contains a large number of parts and has extremely high assembly tolerance requirements. This not only increases the difficulty of assembly, but also makes it difficult to ensure the yield rate; 2) In the process of realizing the screen folding action, the accessories contained in the U-shaped structure follow non-circular trajectories to adjust their relative position relationships. Affected by this factor, it is not conducive to the realization of the ultra-thin design goal of flexible screen folding mobile phones; 3) According to feedback from the after-sales department, due to the design characteristics of the U-shaped structure, after a period of use, the flexible screen in the folding area is prone to obvious creases, thus affecting the viewing experience. In order to deal with the problem of obvious creases, some domestic manufacturers have adopted a water drop-shaped structure. Although the crease is shallow, the design structure itself has defects. The area near the folding of the screen is affected by multiple folding operations, resulting in a flatness deviation range that is greater than that of the U-shaped structure; 4) After folding, a large gap will be generated between the fuselage, which will not only affect the aesthetics of the mobile phone after folding, but also affect the stability of the U-shaped structure, resulting in its actual lifespan being lower than the expected design. Therefore, it is urgent for technicians to solve the above problems. Summary of the invention

[0004] Therefore, in view of the above-mentioned existing problems and defects, the research team of the present invention collected relevant information, conducted multiple evaluations and considerations, and after continuous experiments and modifications by the research team members, it finally led to the emergence of the ultra-thin handheld outward folding flexible screen device.

[0005] To solve the above technical problems, the present invention relates to an ultra-thin handheld externally foldable flexible screen device, including a flexible screen, a left folding body, a right folding body, and a transition connection part. The left folding body and the right folding body are assembled with the transition connection part as a whole, and when both are subjected to a manual screen folding force, they can perform a 180° folding movement. The flexible screen is cooperatively bonded and fixed by the left folding body and the right folding body, and passes over the transition connection part in a non-bonded state. The transition connection part includes a central member, a left deflection member, a right deflection member, a left transition plate, a right transition plate, a flexible bending body, and a gear meshing mechanism. The left deflection member and the right deflection member are arranged opposite to each other, both are assembled on the central member, and when subjected to a manual screen folding force, they can both perform a circumferential rotation movement around the central axis of the central member. In the non-screen-folding state, the flexible bending body is in a flattened state and is in a critical contact state with the central member. In the state after folding is completed, the flexible bending body is in a bent state and circumferentially wraps the central member. The left transition plate serves as a connection transition between the left folding body and the flexible bending body, and is in contact with the left deflection member. The right transition plate serves as a connection transition between the right folding body and the flexible bending body, and is in contact with the right deflection member. The gear meshing mechanism includes a left gear, a left sliding arm, a right gear, and a right sliding arm. The left gear and the right gear are both assembled inside the central member and mesh with each other. Inside the central member, a left gear receiving groove and a right gear receiving groove for accommodating the left gear and the right gear are respectively formed. A first left sliding groove adapted to the left sliding arm is formed on the left deflection member. A first right sliding groove adapted to the right sliding arm is formed on the right deflection member. The left sliding arm is welded to the left gear as a whole and penetrates into the first left sliding groove. The right sliding arm is welded to the right gear as a whole and penetrates into the first right sliding groove. During the screen folding operation process, the left gear and the right gear perform reverse rotational movements. At the same time, the left sliding arm and the right sliding arm respectively perform sliding movements along the first left sliding groove and the first right sliding groove. Accordingly, the left folding body and the right folding body fold synchronously.

[0006] As a further improvement of the technical solution disclosed by the present invention, the left deflection member includes a left base body, a first left deflection arm, and a second left deflection arm. The first left sliding groove is formed on the left base body. The left base body is in contact with the left transition plate. The first left deflection arm and the second left deflection arm are both continuously extended from the left base body and are arranged side by side along the width direction of the left base body. Near its free end, a first left arc-shaped deflection portion and a second left arc-shaped deflection portion are respectively formed on the first left deflection arm and the second left deflection arm. The right deflection member includes a right base body, a first right deflection arm, and a second right deflection arm. The first right sliding groove is formed on the right base body. The right base body is in contact with the right transition plate. The first right deflection arm and the second right deflection arm are both continuously extended from the right base body and are arranged side by side along the width direction of the right base body. Near its free end, a first right arc-shaped deflection portion and a second right arc-shaped deflection portion are respectively formed on the first right deflection arm and the second right deflection arm. First arc-shaped accommodation grooves, second arc-shaped accommodation grooves, third arc-shaped accommodation grooves, and fourth arc-shaped accommodation grooves that are adapted to the outer shapes of the first left arc-shaped deflection portion, the second left arc-shaped deflection portion, the first right arc-shaped deflection portion, and the second right arc-shaped deflection portion are respectively formed inside the central member. When a manual folding screen force acts, the first left arc-shaped deflection portion and the second left arc-shaped deflection portion respectively perform circumferential sliding movements along the first arc-shaped accommodation groove and the second arc-shaped accommodation groove, and the left deflection member can perform circumferential rotational movement around the central axis of the central member. At the same time, the first right arc-shaped deflection portion and the second right arc-shaped deflection portion respectively perform circumferential sliding movements along the third arc-shaped accommodation groove and the fourth arc-shaped accommodation groove, and the right deflection member can perform circumferential rotational movement around the central axis of the central member.

[0007] As a further improvement of the technical solution disclosed by the present invention, the left folding body includes a left top wall and a left bottom wall that are oppositely arranged along its thickness direction. The right folding body includes a right top wall and a right bottom wall that are oppositely arranged along its thickness direction. The left top wall and the right top wall are respectively used to directly butt against the left transition plate and the right transition plate. The transition connection part further includes a left sliding part and a right sliding part. The left sliding part is matched with the left deflecting part, and a second left sliding groove adapted to the left sliding part is formed on the left deflecting part. The right sliding part is matched with the right deflecting part, and a second right sliding groove adapted to the right sliding part is formed on the right deflecting part. The left sliding part and the right sliding part are respectively in contact with and adhesively fixed to the inner sides of the left bottom wall and the right bottom wall. When the folding screen operation is performed, both the left deflecting part and the right deflecting part perform circumferential rotational movement around the central axis of the central member, the left sliding part performs sliding movement along the second left sliding groove, and the depth value of the left sliding cavity formed by the enclosure of the left top wall and the left bottom wall into which the left deflecting part extends changes adaptively. At the same time, the right sliding part performs sliding movement along the second right sliding groove, and the depth value of the right sliding cavity formed by the enclosure of the right top wall and the right bottom wall into which the right deflecting part extends changes adaptively.

[0008] As a further improvement of the technical solution disclosed by the present invention, the transition connection part further includes a left locking mechanism and a right locking mechanism. The left locking mechanism is adapted to be used with the left sliding part, and a left installation cavity for accommodating it is provided on the left deflecting part. The right locking mechanism is adapted to be used with the right sliding part, and a right installation cavity for accommodating it is provided on the right deflecting part. After the folding screen is completed, with the assistance of the left locking mechanism, the left sliding part is in a temporarily locked state relative to the left deflecting part, and with the assistance of the right locking mechanism, the right sliding part is in a temporarily locked state relative to the right deflecting part.

[0009] As a further improvement of the technical solution disclosed by the present invention, a left locking groove is formed on one side of the left sliding member. The left locking mechanism includes a first left columnar spring and a left locking block. The left locking block is formed with left locking teeth adapted to the left locking groove. The first left columnar spring and the left locking block are both installed in the left installation cavity, and the first left columnar spring always applies an elastic pushing force to the left locking block. During the folding process of the folding screen, the left sliding member performs a directional sliding movement along the second left sliding groove. Due to the elastic pushing force from the first left columnar spring, the left locking teeth on the left locking block abut against the left sliding member, and the left locking teeth freely slide along the length direction of the left sliding member until they sink into the left locking groove. A right locking groove is formed on one side of the right sliding member. The right locking mechanism includes a first right columnar spring and a right locking block. The right locking block is formed with right locking teeth adapted to the right locking groove. The first right columnar spring and the right locking block are both installed in the right installation cavity, and the first right columnar spring always applies an elastic pushing force to the right locking block. During the folding process of the folding screen, the right sliding member performs a directional sliding movement along the second right sliding groove. Due to the elastic pushing force from the first right columnar spring, the right locking teeth on the right locking block abut against the right sliding member, and the right locking teeth freely slide along the length direction of the right sliding member until they sink into the right locking groove.

[0010] As a further improvement of the technical solution disclosed by the present invention, the ultra-thin handheld external folding flexible screen device further includes a gap compensation mechanism. The gap compensation mechanism includes a left gap compensation plate, a right gap compensation plate, a left elastic recovery unit, and a right elastic recovery unit. In the folded screen state, the left gap compensation plate is in contact with the central member and performs a displacement movement along the left sliding cavity due to the extrusion of the right gap compensation plate, and the left elastic recovery unit stores elastic potential energy synchronously. The right gap compensation plate opposite to the left gap compensation plate is also in contact with the central member and performs a displacement movement along the right sliding cavity due to the extrusion of the left gap compensation plate, and the right elastic recovery unit stores elastic potential energy synchronously. As the unfolding operation process continues, the elastic potential energy stored in the left elastic recovery unit and the right elastic recovery unit is released, and the left gap compensation plate and the right gap compensation plate perform an opposite displacement movement under the pulling force of the left elastic recovery unit and the right elastic recovery unit.

[0011] As a further improvement of the technical solution disclosed in the present invention, a left-mounted sliding force-bearing part and a right-mounted sliding force-bearing part are formed on the left-mounted gap compensation plate and the right-mounted gap compensation plate, respectively. Correspondingly, a third left-mounted sliding groove adapted to the left-mounted sliding force-bearing part is formed on the left-mounted deflection member, and a third right-mounted sliding groove adapted to the right-mounted sliding force-bearing part is formed on the right-mounted deflection member. The left-mounted elastic recovery unit includes a second left-mounted columnar spring. The right-mounted elastic recovery unit includes a second right-mounted columnar spring. The second left-mounted columnar spring is built into the third left-mounted sliding groove, and it is maintained in an elastically compressed deformation state due to the common extrusion force from the left-mounted sliding force-bearing part and the left-mounted deflection member. The second right-mounted columnar spring is built into the third right-mounted sliding groove, and it is maintained in an elastically compressed deformation state due to the common extrusion force from the right-mounted sliding force-bearing part and the right-mounted deflection member.

[0012] As a further improvement of the technical solution disclosed in the present invention, the central component is preferably a split structure, which is formed by buckling the central body and the cover plate.

[0013] In the technical solution disclosed in the present invention, the transition connection part serves as a connection transition between the left-placed folding body and the right-placed folding body, and the flexible screen fixed by the left-placed folding body and the right-placed folding body passes over the transition connection part in a non-bonded manner. In the process of implementing the folding screen operation, the left-placed folding body performs a 180° folding movement relative to the right-placed folding body, and the posture of the transition connection part is changed. At the same time, the flexible screen is adaptively bent and deformed due to the folding screen force. The main structure of the transition connection part is a gear meshing mechanism. The gear meshing mechanism is mainly composed of two opposing meshing left-placed gears and right-placed gears. During the folding screen operation, the left-mounted gear and the right-mounted gear perform reverse rotation due to the folding screen force. At the same time, the left-mounted sliding arm fixed as an integral part with the left-mounted gear and the right-mounted sliding arm fixed as an integral part with the right-mounted gear respectively perform sliding motion along the first left-mounted sliding groove and the first right-mounted sliding groove. Concomitantly, the left-mounted folding body and the right-mounted folding body fold synchronously until the 180° screen folding action is completed.

[0014] According to the specific experimental results, the above-mentioned ultra-thin handheld outward folding flexible screen device has achieved at least the following beneficial technical effects in practical applications, specifically:

[0015] 1) Under the premise of ensuring that the left-mounted folding body and the right-mounted folding body can accurately realize the 180° folding action, the number of parts contained in the transition connection part is relatively small, which is conducive to the optimization of the layout of workshop spare parts and assembly lines, and only the left-mounted gear and the right-mounted gear with meshing requirements have extremely high requirements for assembly accuracy, so that the difficulty of assembly can be greatly reduced, and it is conducive to improving the yield rate of finished products;

[0016] 2) During the process of realizing the folding screen action, the left gear and the right gear perform reverse rotational movements, while the left sliding arm and the right sliding arm independently perform directional sliding movements. In this way, the theoretical folding screen radius is effectively reduced, thus laying a good foundation for further reducing the thickness dimension of the outward folding flexible screen device;

[0017] 3) In the non-folded screen state, the flexible screen passes over the flexible bending body in a non-bonded state, and the flexible bending body is in a flattened state and remains in a critical contact state with the central member. And during the folding screen process, the flexible bending body and the flexible screen bend in the same direction, and the two always remain in a contact state throughout the process. The flexible bending body always provides an elastic cushion for the flipping area of the flexible screen. In this way, not only can the problem that obvious creases are likely to appear in the folding area of the flexible screen be effectively solved, ensuring that users have a good viewing and gaming experience, but also different from the common water-drop-shaped design structure of domestic manufacturers, this design structure can also effectively reduce the probability of large-area flatness out-of-tolerance phenomena occurring in the folding area due to the influence of multiple folding screen operations;

[0018] 4) After the folding screen operation is completed, the left folding body and the right folding body can be kept in a closely fitting state for a long time, ensuring good folding aesthetics and user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a three-dimensional schematic diagram of the first perspective of the ultra-thin handheld outward folding flexible screen device in the present invention.

[0021] Figure 2 It is also a three-dimensional schematic diagram of the first perspective of the ultra-thin handheld outward folding flexible screen device in the present invention (in the state where the flexible screen is hidden).

[0022] Figure 3 It is a three-dimensional schematic diagram of the second perspective of the ultra-thin handheld outward folding flexible screen device in the present invention (in the state where the gap compensation mechanism is hidden).

[0023] Figure 4 It is a three-dimensional schematic diagram of the left folding body in the ultra-thin handheld outward folding flexible screen device of the present invention.

[0024] Figure 5 It is a three-dimensional schematic diagram of the right folding body in the ultra-thin handheld outward folding flexible screen device of the present invention.

[0025] Figure 6 It is a three-dimensional schematic diagram of the transition connection part in the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0026] Figure 7 It is also a three-dimensional schematic diagram of the transition connection part in the ultra-thin handheld outward-foldable flexible screen device of the present invention (in the state where the cover plate is hidden).

[0027] Figure 8 It is also a three-dimensional schematic diagram of the transition connection part in the ultra-thin handheld outward-foldable flexible screen device of the present invention (in the state where the screen folding is completed).

[0028] Figure 9 It is a three-dimensional schematic diagram of the central member in the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0029] Figure 10 It is also a three-dimensional schematic diagram of the central member in the ultra-thin handheld outward-foldable flexible screen device of the present invention (in the state where the cover plate is hidden).

[0030] Figure 11 It is a three-dimensional schematic diagram of the left deflection member in the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0031] Figure 12 It is a three-dimensional schematic diagram of the right deflection member in the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0032] Figure 13 It is a three-dimensional schematic diagram of the gear meshing mechanism in the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0033] Figure 14 It is Figure 6 the top view of.

[0034] Figure 15 It is Figure 14 the enlarged view of I part of.

[0035] Figure 16 It is Figure 14 the enlarged view of II part of.

[0036] Figure 17 It is Figure 14 the A-A cross-sectional view of.

[0037] Figure 18 It is Figure 14 the B-B cross-sectional view of.

[0038] Figure 19 It is a three-dimensional schematic diagram of the left sliding member in the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0039] Figure 20 It is a three-dimensional schematic diagram of the right sliding member in the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0040] Figure 21 is Figure 2 the top view of

[0041] Figure 22 is Figure 21 the C-C cross-sectional view of

[0042] Figure 23 is Figure 21 the D-D cross-sectional view of

[0043] Figure 24 is the three-dimensional schematic diagram of the second perspective of the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0044] Figure 25 is Figure 24 the top view of

[0045] Figure 26 is Figure 25 the E-E cross-sectional view of

[0046] Figure 27 is Figure 26 the enlarged view of part III of

[0047] Figure 28 is the three-dimensional schematic diagram of the left gap compensation plate in the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0048] Figure 29 is the three-dimensional schematic diagram of the right gap compensation plate in the ultra-thin handheld outward-foldable flexible screen device of the present invention.

[0049] 1 - Flexible screen; 2 - Left folding body; 21 - Left top wall; 22 - Left bottom wall; 23 - Left sliding cavity; 3 - Right folding body; 31 - Right top wall; 32 - Right bottom wall; 33 - Right sliding cavity; 4 - Transition connecting part; 41 - Central part; 411 - Central body; 4111 - Left gear accommodating groove; 4112 - Right gear accommodating groove; 4113 - First arc-shaped accommodating groove; 4114 - Second arc-shaped accommodating groove; 4115 - Third arc-shaped accommodating groove; 4116 - Fourth arc-shaped accommodating groove; 412 - Cover plate; 42 - Left deflecting part; 421 - Left base body; 4211 - First left sliding groove; 4212 - Second left sliding groove; 4213 - Left installation cavity; 4214 - Third left sliding groove; 422 - First left deflecting arm; 4221 - First left arc-shaped deflecting part; 423 - Second left deflecting arm; 4231 - Second left arc-shaped deflecting part; 43 - Right deflecting part; 431 - Right base body; 4311 - First right sliding groove; 4312 - Second right sliding groove; 4313 - Right installation cavity; 4314 - Third right sliding groove; 432 - First right deflecting arm; 4321 - First right arc-shaped deflecting part; 433 - Second right deflecting arm; 4331 - Second right arc-shaped deflecting part; 44 - Left transition plate; 45 - Right transition plate; 46 - Flexible bending body; 47 - Gear meshing mechanism; 471 - Left gear; 472 - Left sliding arm; 473 - Right gear; 474 - Right sliding arm; 48 - Left sliding part; 481 - Left locking notch; 49 - Right sliding part; 491 - Right locking notch; 410 - Left locking mechanism; 4101 - First left columnar spring; 4102 - Left locking block; 41021 - Left locking tooth; 411a - Right locking mechanism; 411a1 - First right columnar spring; 411a2 - Right locking block; 411a21 - Right locking tooth; 5 - Clearance compensation mechanism; 51 - Left clearance compensation plate; 511 - Left sliding load-bearing part; 52 - Right clearance compensation plate; 521 - Right sliding load-bearing part; 53 - Left elastic recovery unit; 531 - Second left columnar spring; 54 - Right elastic recovery unit; 541 - Second right columnar spring. Detailed implementation mode

[0050] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "front", "rear", "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0051] The following combines specific embodiments to further elaborate on the content disclosed in the present invention, asFigure 1 , 2 As shown in FIGS. 1 and 3, the ultra-thin handheld externally foldable flexible screen device mainly consists of a flexible screen 1, a left folding body 2, a right folding body 3, and a transition connecting portion 4, etc. Among them, the left folding body 2 and the right folding body 3 are assembled with the transition connecting portion 4 as a whole. The flexible screen 1 is cooperatively bonded and fixed by the left folding body 2 and the right folding body 3, and passes over the transition connecting portion 4 in a non-bonded state.

[0052] As Figure 6 , 7 As shown in FIGS. 5 and 6, the transition connecting portion 4 mainly consists of a central member 41, a left deflecting member 42, a right deflecting member 43, a left transition plate 44, a right transition plate 45, a flexible bending body 46, and a gear meshing mechanism 47, etc. Among them, the left deflecting member 42 and the right deflecting member 43 are arranged opposite to each other, both are assembled on the central member 41, and can perform circumferential rotational movement around the central axis of the central member 41 when subjected to a manual screen folding force. In the non-screen folding state, the flexible bending body 46 is in a flattened state and is in a critical contact state with the central member 41 (as shown in FIGS. 7 and 8). In the state after bending is completed, the flexible bending body 46 is in a bent state and circumferentially wraps the central member 41 (as shown in FIG. 9). The flexible bending body 46 is preferably a rubber band with extremely good elasticity and extremely good tensile ductility. As shown in FIG. 10, the left transition plate 44 serves as a connection transition between the left folding body 2 and the flexible bending body 46, and is in contact with the left deflecting member 42. The right transition plate 45 serves as a connection transition between the right folding body 3 and the flexible bending body 46, and is in contact with the right deflecting member 43. Figure 6 , 7 shown). In the state after bending is completed, the flexible bending body 46 is in a bent state and circumferentially wraps the central member 41 (as shown in FIG. 11). The flexible bending body 46 is preferably a rubber band with extremely good elasticity and extremely good tensile ductility. As shown in FIG. 12, the left transition plate 44 serves as a connection transition between the left folding body 2 and the flexible bending body 46, and is in contact with the left deflecting member 42. The right transition plate 45 serves as a connection transition between the right folding body 3 and the flexible bending body 46, and is in contact with the right deflecting member 43. Figure 8 shown). The flexible bending body 46 is preferably a rubber band with extremely good elasticity and extremely good tensile ductility. As shown in FIG. 13, the left transition plate 44 serves as a connection transition between the left folding body 2 and the flexible bending body 46, and is in contact with the left deflecting member 42. The right transition plate 45 serves as a connection transition between the right folding body 3 and the flexible bending body 46, and is in contact with the right deflecting member 43. Figure 2 shown). As shown in FIG. 14, the left transition plate 44 serves as a connection transition between the left folding body 2 and the flexible bending body 46, and is in contact with the left deflecting member 42. The right transition plate 45 serves as a connection transition between the right folding body 3 and the flexible bending body 46, and is in contact with the right deflecting member 43.

[0053] As Figure 7 , 13 shown), the gear meshing mechanism 47 mainly consists of a left gear 471, a left sliding arm 472, a right gear 473, and a right sliding arm 474, etc. As shown in FIG. 15, both the left gear 471 and the right gear 473 are assembled inside the central member 41 and mesh with each other. As shown in FIGS. 16 and 17, the central member 41 is preferably a split structure, which is formed by buckling a central body 411 and a cover plate 412. Left gear accommodation grooves 4111 and right gear accommodation grooves 4112 for accommodating the left gear 471 and the right gear 473 are respectively formed inside the central body 411. Figure 7 shown). As shown in FIG. 16, both the left gear 471 and the right gear 473 are assembled inside the central member 41 and mesh with each other. As shown in FIGS. 17 and 18, the central member 41 is preferably a split structure, which is formed by buckling a central body 411 and a cover plate 412. Left gear accommodation grooves 4111 and right gear accommodation grooves 4112 for accommodating the left gear 471 and the right gear 473 are respectively formed inside the central body 411. Figure 9 , 10 shown), the central member 41 is preferably a split structure, which is formed by buckling a central body 411 and a cover plate 412. Left gear accommodation grooves 4111 and right gear accommodation grooves 4112 for accommodating the left gear 471 and the right gear 473 are respectively formed inside the central body 411.

[0054] As Figure 11As shown in the figure, the left deflection member 42 is mainly composed of several parts such as a left base body 421, a first left deflection arm 422, and a second left deflection arm 423. A first left sliding groove 4211 adapted to the left sliding arm 472 is provided on the left base body 421. As Figure 12 As shown in the figure, the right deflection member 43 is mainly composed of several parts such as a right base body 431, a first right deflection arm 432, and a second right deflection arm 433. A first right sliding groove 4311 adapted to the right sliding arm 474 is provided on the right base body 431. As Figure 13 As shown in the figure, the left sliding arm 472 is welded to the left gear 471 as a whole, and it penetrates into the first left sliding groove 4211. The right sliding arm 474 is welded to the right gear 473 as a whole, and it penetrates into the first right sliding groove 4311. During the folding screen operation process, the left gear 471 and the right gear 473 perform reverse rotational movements. At the same time, the left sliding arm 472 and the right sliding arm 474 respectively perform sliding movements along the first left sliding groove 4211 and the first right sliding groove 4311. Accordingly, the left folding body 2 and the right folding body 3 are folded synchronously.

[0055] In the technical solution disclosed by the present invention, the transition connection portion 4 serves as a connection transition between the left folding body 2 and the right folding body 3, and the flexible screen 1 jointly fixed by the left folding body 2 and the right folding body 3 passes over the transition connection portion 4 in a non-bonded state. During the process of implementing the folding screen operation, the left folding body 2 performs a 180° folding movement relative to the right folding body 3, and the posture of the transition connection portion 4 is changed. At the same time, the flexible screen 1 undergoes adaptive bending deformation due to the action of the folding screen force. The main structure of the transition connection portion 4 is a gear meshing mechanism 47. The gear meshing mechanism 47 is mainly composed of a pair of left gear 471 and a right gear 473 that are meshed with each other. During the folding screen operation process, the left gear 471 and the right gear 473 perform reverse rotational movements due to the action of the folding screen force. At the same time, the left sliding arm 472 fixed to the left gear 471 as a whole and the right sliding arm 474 fixed to the right gear 473 as a whole respectively perform sliding movements along the first left sliding groove 4211 and the first right sliding groove 4311. Accordingly, the left folding body 2 and the right folding body 3 are folded synchronously until the 180° folding screen action is completed.

[0056] The above-mentioned ultra-thin handheld external folding flexible screen device has at least achieved the following beneficial technical effects in practical applications, specifically:

[0057] 1) On the premise of ensuring that the left folding body 2 and the right folding body 3 can accurately perform a 180° folding action, the number of parts included in the transition connecting part 4 is relatively small, which is conducive to the optimization of spare parts in the workshop and the layout of the assembly line. Moreover, only the left gear 471 and the right gear 473 with meshing requirements have extremely high requirements for assembly accuracy, so the assembly difficulty is greatly reduced, and it is beneficial to improve the yield rate of the finished product;

[0058] 2) During the process of realizing the folding screen action, the left gear 471 and the right gear 473 perform reverse rotational movements, while the left sliding arm 472 and the right sliding arm 474 respectively perform directional sliding movements independently. In this way, the theoretical folding screen radius is effectively reduced, thus laying a good foundation for further reducing the thickness dimension of the outward folding flexible screen device;

[0059] 3) After the folding screen operation is completed, the left folding body 2 and the right folding body 3 can be kept in a tightly fitting state for a long time, ensuring good folding aesthetics and user experience.

[0060] Here, it should also be emphasized that in the non - folded screen state, the flexible screen 1 passes over the flexible bending body 46 in a non - adhesive state, and the flexible bending body 46 is in a flattened state and is in a critical contact state with the central member 41. And during the folding screen process, the flexible bending body 46 and the flexible screen 1 bend in the same direction, and the two always remain in contact throughout the process. The flexible bending body 46 always provides an elastic buffer pad for the flipping area of the flexible screen 1. In this way, not only can the problem that obvious creases are likely to appear in the folding area of the flexible screen 1 be effectively solved, ensuring that users have a good viewing and gaming experience, but also different from the common water - droplet - shaped design structure of domestic manufacturers, this design structure can also effectively reduce the probability of large - area flatness out - of - tolerance phenomenon caused by multiple folding screen operations in the folding area.

[0061] On the premise of ensuring that the transition connecting part 4 can smoothly and smoothly adjust its posture during the folding screen operation, considering aspects such as simplifying its design structure as much as possible, reducing the assembly difficulty, and then accelerating the production beat of a single device, as Figure 11 shown in the figure, the left base body 421 is in contact with the left transition plate 44. The first left deflecting arm 422 and the second left deflecting arm 423 both extend from the left base body 421, and are arranged side by side along the width direction of the left base body 421. Near their free ends, a first left arc deflecting part 4221 and a second left arc deflecting part 4231 are respectively formed on the first left deflecting arm 422 and the second left deflecting arm 423. As Figure 12As shown, the right base body 431 is in contact with the right transition plate 45. The first right deflection arm 432 and the second right deflection arm 433 both extend from the right base body 431 and are arranged side by side along the width direction of the right base body 431. Near their free ends, a first right arc-shaped deflection portion 4321 and a second right arc-shaped deflection portion 4331 are respectively formed on the first right deflection arm 432 and the second right deflection arm 433. As Figure 10 As shown, a first arc-shaped accommodation groove 4113, a second arc-shaped accommodation groove 4114, a third arc-shaped accommodation groove 4115, and a fourth arc-shaped accommodation groove 4116 that are adapted to the outer shapes of the first left arc-shaped deflection portion 4221, the second left arc-shaped deflection portion 4231, the first right arc-shaped deflection portion 4321, and the second right arc-shaped deflection portion 4331 are respectively formed in the central body 411. When a manual folding screen force acts, the first left arc-shaped deflection portion 4221 and the second left arc-shaped deflection portion 4231 respectively perform circumferential sliding movements along the first arc-shaped accommodation groove 4113 and the second arc-shaped accommodation groove 4114, and the left deflection member 42 can perform circumferential rotational movement around the central axis of the central member 41. At the same time, the first right arc-shaped deflection portion 4321 and the second right arc-shaped deflection portion 4331 respectively perform circumferential sliding movements along the third arc-shaped accommodation groove 4115 and the fourth arc-shaped accommodation groove 4116, and the right deflection member 43 can perform circumferential rotational movement around the central axis of the central member 41. By adopting the above technical solution, on the one hand, during the process of implementing the folding screen operation, both the left deflection member 42 and the right deflection member 43 perform circumferential rotational movement around the central axis of the central member 41, that is, the virtual circular folding design is realized, thus laying a good foundation for reducing the thickness dimension of the handheld external folding flexible screen device; on the other hand, since the left base body 421 and the right base body 431 are respectively in contact with the left transition plate 44 and the right transition plate 45, rather than the conventional adhesive fixed design, it is ensured that the flexible screen 1 will not be directly affected by the pulling force during the entire folding screen process, ensuring its long service life.

[0062] In order to further increase the structural stability after the left folding body 2, the right folding body 3 and the transition connection portion 4 are assembled, and when the attitude of the transition connection portion 4 changes due to the folding screen force, the left folding body 2 can stably perform a 180° folding screen action relative to the right folding body 3. As a further optimization of the above technical solution, as Figure 4 As shown, the left folding body 2 includes a left top wall 21 and a left bottom wall 22 that are oppositely arranged along its thickness direction. As Figure 5 As shown, the right folding body 3 includes a right top wall 31 and a right bottom wall 32 that are oppositely arranged along its thickness direction. As Figure 2 、 3As shown, the left top wall 21 and the right top wall 31 are respectively used to directly dock with the left transition plate 44 and the right transition plate 45. As Figure 6 , 7 As shown, the transition connection part 4 is further provided with a left sliding part 48 and a right sliding part 49. The left sliding part 48 is matched with the left deflecting part 42, and a second left sliding groove 4212 adapted to the left sliding part 48 is formed on the left base body 421. The right sliding part 49 is matched with the right deflecting part 43, and a second right sliding groove 4312 adapted to the right sliding part 49 is formed on the right base body 431. The left sliding part 48 and the right sliding part 49 are respectively in contact with the inner sides of the left bottom wall 22 and the right bottom wall 32 and are adhesively fixed. When the folding screen operation is performed, both the left deflecting part 42 and the right deflecting part 43 perform circumferential rotational movement around the central axis of the central member 41. The left sliding part 48 performs sliding movement along the second left sliding groove 4212, and the depth value of the left sliding cavity 23 formed by the left top wall 21 and the left bottom wall 22 where the left deflecting part 42 extends into changes adaptively (as Figure 21 , 22 As shown), at the same time, the right sliding part 49 performs sliding movement along the second right sliding groove 4312, and the depth value of the right sliding cavity 33 formed by the right top wall 31 and the right bottom wall 32 where the right deflecting part 43 extends into changes adaptively (as Figure 21 , 23 As shown).

[0063] As Figure 14 As shown, the transition connection part 4 is further provided with a left locking mechanism 410 and a right locking mechanism 411a. The left locking mechanism 410 is adapted to the left sliding part 48, and a left mounting cavity 4213 for accommodating it is provided on the left deflecting part 42. The right locking mechanism 411a is adapted to the right sliding part 49, and a right mounting cavity 4313 for accommodating it is provided on the right deflecting part 43. After the folding screen is completed, with the assistance of the left locking mechanism 410, the left sliding part 48 is in a temporarily locked state relative to the left deflecting part 42, and with the assistance of the right locking mechanism 411a, the right sliding part 49 is in a temporarily locked state relative to the right deflecting part 43. In this way, the left folding body 2 and the right folding body 3 are stably locked relative to the transition connection part 4, and when it is subjected to an accidental force again, the folding screen angle always remains at a fixed value, ensuring that the ultra-thin handheld external folding flexible screen device has a good user experience.

[0064] It is known that, according to design common sense, the left locking mechanism 410 and the right locking mechanism 411a can adopt various design structures to achieve a good locking function. However, a specific implementation solution with a simple design structure, easy to manufacture and implement, and effectively preventing the occurrence of "jamming" is recommended as follows: As Figure 19 shown, a left locking notch 481 is formed on one side of the left sliding member 48. As Figure 15 , 17 shown, the left locking mechanism 410 mainly consists of several parts such as the first left columnar spring 4101 and the left locking block 4102. The left locking block 4102 is formed with a left locking tooth 41021 adapted to the left locking notch 481. The first left columnar spring 4101 and the left locking block 4102 are both installed in the left installation cavity 4213, and the first left columnar spring 4101 always applies an elastic pushing force to the left locking block 4102. During the folding process of the folding screen, the left sliding member 48 performs a directional sliding movement along the second left sliding groove 4212. The left locking block 4102 is pushed by the elastic force of the first left columnar spring 4101, so that the left locking tooth 41021 on it touches the left sliding member 48, and the left locking tooth 41021 freely slides along the length direction of the left sliding member 48 until it sinks into the left locking notch 481. At this point, the folding angle of the left folding body 2 is temporarily locked. As Figure 20 shown, a right locking notch 491 is formed on one side of the right sliding member 49. As Figure 16 , 18As shown in the figure, the right locking mechanism 411a mainly consists of several parts such as the first right columnar spring 411a1 and the right locking block 411a2. The right locking block 411a2 is formed with right locking teeth 411a21 adapted to the right locking notch 491. The first right columnar spring 411a1 and the right locking block 411a2 are both installed in the right installation cavity 4313, and the first right columnar spring 411a1 always applies an elastic pushing force towards the right locking block 411a2. During the folding screen process, the right sliding member 49 performs a directional sliding movement along the second right sliding groove 4312. Due to the elastic pushing force from the first right columnar spring 411a1, the right locking teeth 411a21 on the right locking block 411a2 contact the right sliding member 49, and the right locking teeth 411a21 slide freely along the length direction of the right sliding member 49 until they sink into the right locking notch 491. At this point, the folding screen angle of the right folding body 3 is temporarily locked. When the user performs the screen opening operation, the left deflecting member 42 and the right deflecting member 43 both perform reverse rotational movements around the central axis of the central member 41. The left locking teeth 41021 and the right locking teeth 411a21 are forced to disengage from the left locking notch 481 and the right locking notch 491 respectively. At the same time, the first left columnar spring 4101 and the first right columnar spring 411a1 undergo self-adaptive retraction due to the squeezing force, facilitating the subsequent 180° flattening of the left folding body 2 and the right folding body 3 relative to the transition connection portion 4.

[0065] As Figure 24 shown in the figure, the ultra-thin handheld external folding flexible screen device is also provided with a gap compensation mechanism 5. The gap compensation mechanism 5 includes a left gap compensation plate 51, a right gap compensation plate 52, a left elastic recovery unit 53, and a right elastic recovery unit 54 (as Figure 25 - 27 shown in the figure). In the folding screen state, the left gap compensation plate 51 contacts the central member 41 and performs a displacement movement along the left sliding cavity 23 due to the pushing of the right gap compensation plate 52, and the left elastic recovery unit 53 synchronously stores elastic potential energy. The right gap compensation plate 52 opposite to the left gap compensation plate 51 also contacts the central member 41 and performs a displacement movement along the right sliding cavity 33 due to the pushing of the left gap compensation plate 51, and the right elastic recovery unit 54 synchronously stores elastic potential energy. As the screen opening operation process continues, the elastic potential energy stored in the left elastic recovery unit 53 and the right elastic recovery unit 54 is released, and the left gap compensation plate 51 and the right gap compensation plate 52 perform opposite displacement movements due to the pulling forces from the left elastic recovery unit 53 and the right elastic recovery unit 54.

[0066] As a further refinement of the above technical solution, as Figure 28 , 29As shown in the figure, a left sliding load-bearing part 511 and a right sliding load-bearing part 521 are respectively formed on the left gap compensation plate 51 and the right gap compensation plate 52. Correspondingly, a third left sliding groove 4214 adapted to the left sliding load-bearing part 511 is formed on the left base body 421, and a third right sliding groove 4314 adapted to the right sliding load-bearing part is formed on the right base body 431 (as shown in Figure 11 , 12 ). As shown in Figure 27 , the left elastic recovery unit 53 includes a second left columnar spring 531. The right elastic recovery unit 54 includes a second right columnar spring 541. The second left columnar spring 531 is built in the third left sliding groove 4214, and it is kept in an elastically compressed deformation state under the combined extrusion force from the left sliding load-bearing part 511 and the left deflecting part 42. The second right columnar spring 541 is built in the third right sliding groove 4314, and it is kept in an elastically compressed deformation state under the combined extrusion force from the right sliding load-bearing part 521 and the right deflecting part 43.

[0067] During the folding screen operation process, the left folding body 2 and the right folding body 3 perform a 180° folding action relative to the transition connection part 4. The left gap compensation plate 51 and the right gap compensation plate 52 perform an adaptive retraction movement due to the extrusion force, and the second left columnar spring 531 and the second right columnar spring 541 store elastic potential energy; during the flattening operation process, the gap formed by the folding of the left folding body 2 and the right folding body 3 gradually increases, and the left gap compensation plate 51 and the right gap compensation plate 52 accompanyingly cover the above gap in real time under the elastic recovery force of the second left columnar spring 531 and the second right columnar spring 541 respectively, ensuring that the transition connection part 4 remains hidden whether in the folding screen process or the unfolding screen process, so as to improve the user's application experience of flipping the screen of the ultra-thin handheld external folding flexible screen device.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An ultra-thin handheld externally-foldable flexible screen device, comprising a flexible screen, a left folding body, a right folding body and a transition connection part; the left folding body and the right folding body are assembled with the transition connection part as a whole, and when both are subjected to a manual screen folding force, they can perform a 180° folding movement; the flexible screen is cooperatively bonded and fixed by the left folding body and the right folding body, and passes over the transition connection part in a non-bonded state, characterized in that, The transition connection part includes a central member, a left deflection member, a right deflection member, a left transition plate, a right transition plate, a flexible bending body, and a gear meshing mechanism; the left deflection member and the right deflection member are arranged opposite to each other, both are assembled on the central member, and can perform circumferential rotational movement around the central axis of the central member when subjected to a manual folding screen force; In the non-folded screen state, the flexible bending body is in a flattened state and is in a critical contact state with the central member; in the fully folded state, the flexible bending body is in a bent state and circumferentially wraps the central member; the left transition plate serves as a connection transition between the left folding body and the flexible bending body, and is in contact with the left deflection member; the right transition plate serves as a connection transition between the right folding body and the flexible bending body, and is in contact with the right deflection member; the gear meshing mechanism includes a left gear, a left sliding arm, a right gear, and a right sliding arm; the left gear and the right gear are both assembled inside the central member and mesh with each other; left gear receiving grooves and right gear receiving grooves for receiving the left gear and the right gear are respectively formed inside the central member; a first left sliding groove adapted to the left sliding arm is formed on the left deflection member; a first right sliding groove adapted to the right sliding arm is formed on the right deflection member; the left sliding arm is welded to the left gear as a whole and penetrates into the first left sliding groove; the right sliding arm is welded to the right gear as a whole and penetrates into the first right sliding groove; During the folding screen operation process, the left gear and the right gear perform reverse rotational movement. At the same time, the left sliding arm and the right sliding arm respectively perform sliding movement along the first left sliding groove and the first right sliding groove. Accordingly, the left folding body and the right folding body are folded synchronously; The left folding body includes a left top wall and a left bottom wall arranged opposite to each other along its thickness direction; the right folding body includes a right top wall and a right bottom wall arranged opposite to each other along its thickness direction; the central member is a split structure and is formed by buckling a central body and a cover plate.

2. The ultra-thin handheld externally-foldable flexible screen device according to claim 1, wherein, The left deflection member includes a left base body, a first left deflection arm, and a second left deflection arm; the first left sliding groove is formed on the left base body; the left base body is in contact with the left transition plate; the first left deflection arm and the second left deflection arm both extend from the left base body and are arranged side by side along the width direction of the left base body; near its free end, a first left arc deflection part and a second left arc deflection part are respectively formed on the first left deflection arm and the second left deflection arm; the right deflection member includes a right base body, a first right deflection arm, and a second right deflection arm; The first right-side sliding groove is formed on the right-side base body; the right-side base body is in contact with the right-side transition plate; both the first right-side deflection arm and the second right-side deflection arm are continuously extended from the right-side base body and are arranged side by side along the width direction of the right-side base body; near its free end, a first right-side arc-shaped deflection portion and a second right-side arc-shaped deflection portion are respectively formed on the first right-side deflection arm and the second right-side deflection arm; a first arc-shaped accommodating groove, a second arc-shaped accommodating groove, a third arc-shaped accommodating groove, and a fourth arc-shaped accommodating groove that are adapted to the outer shapes of the first left-side arc-shaped deflection portion, the second left-side arc-shaped deflection portion, the first right-side arc-shaped deflection portion, and the second right-side arc-shaped deflection portion are respectively formed inside the central member; when a manual folding screen force is applied, the first left-side arc-shaped deflection portion and the second left-side arc-shaped deflection portion respectively perform circumferential sliding movements along the first arc-shaped accommodating groove and the second arc-shaped accommodating groove, and the left-side deflection member can perform a circumferential rotational movement around the central axis of the central member. At the same time, the first right-side arc-shaped deflection portion and the second right-side arc-shaped deflection portion respectively perform circumferential sliding movements along the third arc-shaped accommodating groove and the fourth arc-shaped accommodating groove, and the right-side deflection member can perform a circumferential rotational movement around the central axis of the central member.

3. The ultra-thin handheld outward-foldable flexible screen device according to any one of claims 1-2, characterized in that, The left-side top wall and the right-side top wall are respectively used to directly connect to the left-side transition plate and the right-side transition plate; the transition connection portion further includes a left-side sliding member and a right-side sliding member; the left-side sliding member is matched with the left-side deflection member, and a second left-side sliding groove adapted to the left-side sliding member is formed on the left-side deflection member; the right-side sliding member is matched with the right-side deflection member, and a second right-side sliding groove adapted to the right-side sliding member is formed on the right-side deflection member; the left-side sliding member and the right-side sliding member are respectively in contact with and adhesively fixed to the inner sides of the left-side bottom wall and the right-side bottom wall. When a folding screen operation is performed, both the left-side deflection member and the right-side deflection member perform circumferential rotational movements around the central axis of the central member. The left-side sliding member performs a sliding movement along the second left-side sliding groove, and the depth value of the left-side deflection member extending into the left-side sliding cavity jointly surrounded by the left-side top wall and the left-side bottom wall changes adaptively. At the same time, the right-side sliding member performs a sliding movement along the second right-side sliding groove, and the depth value of the right-side deflection member extending into the right-side sliding cavity jointly surrounded by the right-side top wall and the right-side bottom wall changes adaptively.

4. The ultra-thin handheld externally-foldable flexible screen device according to claim 3, wherein, The transition connection portion further includes a left-side locking mechanism and a right-side locking mechanism; the left-side locking mechanism is adapted to the left-side sliding member, and a left-side installation cavity for accommodating it is provided on the left-side deflection member; the right-side locking mechanism is adapted to the right-side sliding member, and a right-side installation cavity for accommodating it is provided on the right-side deflection member. After the folding screen is completed, with the assistance of the left locking mechanism, the left sliding member is in a temporarily locked state relative to the left deflecting member, and with the assistance of the right locking mechanism, the right sliding member is in a temporarily locked state relative to the right deflecting member.

5. The ultra-thin handheld outward-foldable flexible screen device according to claim 4, wherein, A left locking notch is formed on one side of the left sliding member; the left locking mechanism includes a first left columnar spring and a left locking block; the left locking block is formed with left locking teeth adapted to the left locking notch; the first left columnar spring and the left locking block are both installed in the left installation cavity, and the first left columnar spring always applies an elastic pushing force to the left locking block; During the folding screen process, the left sliding member performs a directional sliding movement along the second left sliding groove. Due to the elastic pushing force from the first left columnar spring, the left locking teeth on the left locking block contact the left sliding member, and the left locking teeth freely slide along the length direction of the left sliding member until they sink into the left locking notch; a right locking notch is formed on one side of the right sliding member; the right locking mechanism includes a first right columnar spring and a right locking block; the right locking block is formed with right locking teeth adapted to the right locking notch; the first right columnar spring and the right locking block are both installed in the right installation cavity, and the first right columnar spring always applies an elastic pushing force to the right locking block; During the folding screen process, the right sliding member performs a directional sliding movement along the second right sliding groove. Due to the elastic pushing force from the first right columnar spring, the right locking teeth on the right locking block contact the right sliding member, and the right locking teeth freely slide along the length direction of the right sliding member until they sink into the right locking notch.

6. The ultra-thin handheld outward-foldable flexible screen device according to claim 3, characterized in that, It further includes a gap compensation mechanism; the gap compensation mechanism includes a left gap compensation plate, a right gap compensation plate, a left elastic recovery unit, and a right elastic recovery unit; in the folded screen state, the left gap compensation plate contacts the central member and performs a displacement movement along the left sliding cavity due to being pushed by the right gap compensation plate, and the left elastic recovery unit synchronously stores elastic potential energy; the right gap compensation plate opposite to the left gap compensation plate also contacts the central member and performs a displacement movement along the right sliding cavity due to being pushed by the left gap compensation plate, and the right elastic recovery unit synchronously stores elastic potential energy; as the unfolding screen operation process continues, the elastic potential energy stored in the left elastic recovery unit and the right elastic recovery unit is released, and the left gap compensation plate and the right gap compensation plate perform an opposite displacement movement under the pulling force of the left elastic recovery unit and the right elastic recovery unit.

7. The ultra-thin handheld outward-foldable flexible screen device according to claim 6, wherein, A left-mounted sliding force-bearing part and a right-mounted sliding force-bearing part are respectively formed on the left-mounted gap compensation plate and the right-mounted gap compensation plate; correspondingly, a third left-mounted sliding groove matched with the left-mounted sliding force-bearing part is formed on the left-mounted deflection member, and a third right-mounted sliding groove matched with the right-mounted sliding force-bearing part is formed on the right-mounted deflection member; the left-mounted elastic return unit includes a second left-mounted columnar spring; the right-mounted elastic return unit includes a second right-mounted columnar spring; the second left-mounted columnar spring is built into the third left-mounted sliding groove, and it is maintained in an elastically compressed deformation state due to the common extrusion force from the left-mounted sliding force-bearing part and the left-mounted deflection member; the second right-mounted columnar spring is built into the third right-mounted sliding groove, and it is maintained in an elastically compressed deformation state due to the common extrusion force from the right-mounted sliding force-bearing part and the right-mounted deflection member.

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