Ultrathin handheld outward-folding flexible screen deviceTechnical Field
The invention relates to the technical field of manufacturing of handheld devices, in particular to an ultrathin handheld outward folding flexible screen device.
Background
The mobile phone communication equipment appears in thirty years ago, is influenced by factors such as battery and substrate upgrading, and the like, and the external appearance thereof evolves towards miniaturization trend. However, in order to meet the viewing and game experience of users, a large screen (the screen of a part of mobile phones exceeds 7 inches) appears on the market, and in order to simultaneously consider the convenience of storage, in recent years, a science and technology company develops a flexible screen, and the hand feeling volume is reduced by a folding manner on the premise of not influencing the normal use area of the screen, so that the smart folding flexible screen mobile phone era is opened.
According to the related data, the flexible screen folding mobile phone is produced in volume in 2018, and most scientific and technological companies aim to optimize the thickness of the mobile phone after folding the screen. In the prior art, a U-shaped structure is most commonly applied to a flexible screen folding mobile phone to ensure smooth implementation of repeated screen folding actions, wherein the three-star Z-series product is represented. However, the implementation difficulty of the U-shaped structure is high, and the feedback of the problems after the implementation is more in practice, and the problems are specifically characterized in that 1) the number of parts contained in the U-shaped structure is numerous, and the assembly tolerance requirement is extremely high, so that the assembly difficulty is increased, the yield is difficult to ensure, 2) in the process of realizing the screen folding action, the relative position relation of the parts contained in the U-shaped structure along a non-circular track is adjusted, the effect is influenced by the factors, the ultrathin design target of the flexible screen folding mobile phone is not facilitated, and 3) the flexible screen in the folding area is easy to generate obvious crease after a period of use by a customer due to the feedback of the after-sales department, so that the viewing experience is influenced. In order to solve the problem that folds are too obvious, some domestic manufacturers adopt a drop-shaped structure, although the folds are shallow, the folding structure is influenced by the defects of the design structure, the flatness exceeding range of the folding area on the screen is even more than that of the U-shaped structure due to the influence of repeated folding operation, and 4) a large gap is generated between the folded machine bodies, so that the aesthetic property of the folded mobile phone is influenced, the stability of the U-shaped structure is also influenced, and the practical service life of the folding mobile phone is lower than that of the expected design. Thus, a technician is required to solve the above problems.
Disclosure of Invention
Therefore, in view of the above-mentioned existing problems and drawbacks, the present invention gathers related data, and through evaluation and consideration of multiple parties, and continuous experiments and modification by the subject team personnel, the ultra-thin handheld folding flexible screen device is finally caused to appear.
In order to solve the technical problems, the invention relates to an ultrathin handheld outward folding flexible screen device, which comprises a flexible screen, a left folding body, a right folding body and a transitional connecting part. The left-placed turnover body and the right-placed turnover body are assembled with the transitional connecting part into a whole, and the two can execute 180-degree turnover movement under the action of manual screen folding force. The flexible screen is cooperatively bonded and fixed by the left turnover body and the right turnover body, and passes through the transition connecting part in a non-bonded state. The transition connecting part comprises a central part, a left deflection part, a right deflection part, a left transition plate, a right transition plate, a flexible bending body and a gear meshing mechanism. The left deflection piece and the right deflection piece are arranged oppositely and are assembled on the central piece, and can perform circumferential rotation movement around the central axis of the central piece under the action of manual screen folding force. In the unfolded state, the flexible bending body is in a flattened state and is kept in critical contact with the central member. And in the bending state, the flexible bending body is in a bending state and circumferentially wraps the central part. The left transition plate is used as a connection transition between the left turnover body and the flexible bending body and is contacted with the left deflection piece. The right transition plate is used as a connection transition between the right turnover body and the flexible bending body and is contacted with the right deflection piece. The gear engagement mechanism comprises a left gear, a left sliding arm, a right gear and a right sliding arm. The left gear and the right gear are assembled in the central part and meshed with each other. The central component is respectively formed with a left gear accommodating groove and a right gear accommodating groove for accommodating the left gear and the right gear. The left deflection piece is provided with a first left sliding groove matched with the left sliding arm. The right deflection piece is provided with a first right sliding groove matched with the right sliding arm. The left sliding arm and the left gear are welded into a whole and penetrate into the first left sliding groove. The right sliding arm and the right gear are welded into a whole and penetrate into the first right sliding groove. In the screen folding operation process, the left gear and the right gear execute reverse rotation movement, and meanwhile, the left sliding arm and the right sliding arm execute sliding movement along the first left sliding groove and the first right sliding groove respectively, and concomitantly, the left folding body and the right folding body are synchronously folded.
As a further improvement of the disclosed solution, the left deflection member comprises a left base body, a first left deflection arm and a second left deflection arm. The first left-placed sliding groove is formed on the left-placed base body. The left base body is contacted with the left transition plate. The first left deflection arm and the second left deflection arm are formed by continuously extending the left base body and are arranged side by side along the width direction of the left base body. Near the 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 piece comprises a right base body, a first right deflection arm and a second right deflection arm. The first right-placed sliding groove is formed on the right-placed base body. The right base body is contacted with the right transition plate. The first right deflection arm and the second right deflection arm are formed by continuously extending the right base body and are arranged side by side along the width direction of the right base body. Near the free end, a first right arc deflection part and a second right arc deflection part are respectively formed on the first right deflection arm and the second right deflection arm. The central part is respectively provided with 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 which are matched with the shapes of the first left arc-shaped deflection part, the second left arc-shaped deflection part, the first right arc-shaped deflection part and the second right arc-shaped deflection part. When the manual screen folding force acts, the first left-placed arc deflection part and the second left-placed arc deflection part respectively execute circumferential sliding movement along the first arc accommodating groove and the second arc accommodating groove, the left-placed deflection part can execute circumferential rotation movement around the central axis of the central part, meanwhile, the first right-placed arc deflection part and the second right-placed arc deflection part respectively execute circumferential sliding movement along the third arc accommodating groove and the fourth arc accommodating groove, and the right-placed deflection part can execute circumferential rotation movement around the central axis of the central part.
As a further improvement of the technical scheme disclosed by the invention, the left turnover body comprises a left top wall and a left bottom wall which are oppositely arranged along the thickness direction of the left turnover body. The right turnover body comprises a right top wall and a right bottom wall which are oppositely arranged along the thickness direction of the right turnover body. The left top wall and the right top wall are respectively used for directly butt-jointing the left transition plate and the right transition plate. The transition connection part also comprises a left sliding piece and a right sliding piece. The left sliding piece is matched with the left deflection piece, and a second left sliding groove matched with the left sliding piece is formed on the left deflection piece. The right sliding piece is matched with the right deflection piece, and a second right sliding groove matched with the right sliding piece is formed on the right deflection piece. The left sliding piece and the right sliding piece are respectively contacted with the inner side surfaces of the left bottom wall and the right bottom wall and are adhered and fixed. When the screen folding operation is executed, the left deflection piece and the right deflection piece execute circumferential rotation movement around the central axis of the central piece, the left sliding piece executes sliding movement along the second left sliding groove, the left deflection piece stretches into the adaptive change of the depth value of the left sliding cavity formed by the common closure of the left top wall and the left bottom wall, meanwhile, the right sliding piece executes sliding movement along the second right sliding groove, and the right deflection piece stretches into the adaptive change of the depth value of the right sliding cavity formed by the common closure of the right top wall and the right bottom wall.
As a further improvement of the technical scheme disclosed by the invention, the transition connecting part also comprises a left locking mechanism and a right locking mechanism. The left locking mechanism is applied in a mode of being matched with the left sliding piece, and a left mounting cavity for accommodating the left deflection piece is formed in the left deflection piece. The right locking mechanism is applied in a manner of being matched with the right sliding piece, and a right installation cavity for accommodating the right deflection piece is formed in the right deflection piece. After the screen folding is finished, the left sliding piece is in a temporary locking state relative to the left deflection piece under the auxiliary action of the left locking mechanism, and the right sliding piece is in a temporary locking state relative to the right deflection piece under the auxiliary action of the right locking mechanism.
As a further improvement of the technical scheme disclosed by the invention, one side of the left sliding piece is provided with a left locking notch. The left locking mechanism comprises a first left cylindrical spring and a left locking block. The left locking block is formed with left locking teeth matched with the left locking notch. The first left-arranged cylindrical spring and the left-arranged locking block are both arranged in the left-arranged mounting cavity, and the first left-arranged cylindrical spring always exerts elastic pushing force towards the left-arranged locking block. In the screen folding process, the left sliding piece performs directional sliding movement along the second left sliding groove, the left locking block is enabled to be in contact with the left sliding piece through the upper left locking tooth under the action of elastic pushing force from the first left cylindrical spring, and the left locking tooth slides freely along the length direction of the left sliding piece until sinking into the left locking notch. One side of the right sliding piece is provided with a right locking notch. The right locking mechanism comprises a first right column spring and a right locking block. The right locking block is formed with right locking teeth matched with the right locking notch. The first right cylindrical spring and the right locking block are both arranged in the right mounting cavity, and the first right cylindrical spring always applies elastic pushing force to the right locking block. In the screen folding process, the right sliding piece performs directional sliding movement along the second right sliding groove, the right locking block is enabled to be in contact with the right sliding piece through the upper right locking tooth under the action of elastic pushing force from the first right cylindrical spring, and the right locking tooth slides freely along the length direction of the right sliding piece until sinking into the right locking notch.
As a further improvement of the disclosed technical solution, the ultra-thin hand-held folding flexible screen device further comprises a gap compensation mechanism. The clearance compensation mechanism comprises a left clearance compensation plate, a right clearance compensation plate, a left elastic recovery unit and a right elastic recovery unit. In the folded screen state, the left gap compensation plate is contacted with the central component, and the left gap compensation plate is pushed by the right gap compensation plate to execute displacement movement along the left sliding cavity, and the left elastic restoring unit synchronously stores elastic potential energy. The right clearance compensation plate opposite to the left clearance compensation plate is also contacted with the central piece, and is pushed by the left clearance compensation plate to execute displacement movement along the right sliding cavity, and the right elastic restoring unit synchronously stores elastic potential energy. Along with the continuation of the screen display operation process, the elastic potential energy stored by the left elastic restoring unit and the right elastic restoring unit is released, and the left gap compensation plate and the right gap compensation plate execute opposite displacement movement under the action of the tensile force from the left elastic restoring unit and the right elastic restoring unit.
As a further improvement of the technical scheme disclosed by the invention, a left sliding bearing part and a right sliding bearing part are respectively formed on the left clearance compensation plate and the right clearance compensation plate. Correspondingly, a third left-placed sliding groove matched with the left-placed sliding bearing part is formed on the left-placed deflection piece, and a third right-placed sliding groove matched with the right-placed sliding bearing part is formed on the right-placed deflection piece. The left elastic restoring unit comprises a second left columnar spring. The right elastic restoring unit comprises a second right columnar spring. The second left-arranged cylindrical spring is arranged in the third left-arranged sliding groove and is kept in an elastic compression deformation state under the action of the combined extrusion force from the left-arranged sliding bearing part and the left-arranged deflection piece. The second right cylindrical spring is arranged in the third right sliding groove and is kept in an elastic compression deformation state under the action of the combined extrusion force from the right sliding bearing part and the right deflection part.
As a further improvement of the disclosed technical scheme, the central member is preferably of a split structure, and is formed by buckling a central body and a cover plate.
In the technical scheme disclosed by the invention, the transition connection part is used as the connection transition between the left-placed turnover body and the right-placed turnover body, and the flexible screen cooperatively fixed by the left-placed turnover body and the right-placed turnover body passes through the transition connection part in a non-bonding state. In the process of implementing the folding operation, the left folding body performs 180-degree folding movement relative to the right folding body, the gesture of the transition connecting part is changed, and meanwhile, the flexible screen is subjected to adaptive bending deformation due to the action of folding force. The main body structure of the transition connecting part is a gear meshing mechanism. The gear engagement mechanism mainly comprises two oppositely engaged left gears and right gears. In the screen folding operation process, the left gear and the right gear execute reverse rotation movement under the action of screen folding force, meanwhile, the left sliding arm fixed with the left gear as a whole and the right sliding arm fixed with the right gear execute sliding movement along the first left sliding groove and the first right sliding groove respectively, and concomitantly, the left folding body and the right folding body fold synchronously until 180-degree screen folding action is completed.
According to the demonstration of specific experimental results, the ultrathin handheld outward-folding flexible screen device at least has the following beneficial technical effects in practical application:
1) On the premise of ensuring that the left turnover body and the right turnover body can accurately realize 180-degree turnover action, the number of parts contained in the transition connecting part is relatively small, so that the optimization layout of workshop spare parts and assembly lines is facilitated, and only the left gear and the right gear with meshing requirements have extremely high requirements on assembly precision, so that the assembly difficulty is greatly reduced, and the yield of finished products is improved;
2) In the process of realizing the screen folding action, the left gear and the right gear execute reverse rotation movement, and the left sliding arm and the right sliding arm respectively and independently execute directional sliding movement, so that the theoretical screen folding radius can be effectively reduced, and a good bedding is made for the further reduction of the thickness dimension of the outward folding flexible screen device;
3) In the unfolded screen state, the flexible screen sweeps through the flexible bending body in a non-bonding mode, and the flexible bending body is in a flattened state and is kept in critical contact with the central piece. And in the screen folding process, the flexible bending body and the flexible screen bend in the same direction, and the flexible bending body and the flexible screen always keep in an attached state in the whole process, and the flexible bending body always provides an elastic buffer gasket for the overturning area of the flexible screen. Therefore, the problem that the folding area of the flexible screen is easy to generate obvious folds can be effectively solved, the user is ensured to have good film watching and game experience, and the folding area is different from a water drop-shaped design structure common to domestic manufacturers, and the probability of occurrence of large-area flatness out-of-tolerance phenomenon caused by the influence of multiple folding operations can be effectively reduced;
4) After the folding operation is finished, the left folding body and the right folding body can be kept in a close fitting state for a long time, so that good folding attractiveness and user experience are ensured.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a perspective view of a first view of an ultra-thin handheld, folded-out flexible screen apparatus of the present invention.
Fig. 2 is a schematic perspective view of a first view angle of the ultra-thin handheld folding flexible screen device according to the present invention (with the flexible screen removed).
Fig. 3 is a schematic perspective view of a second view angle of the ultrathin handheld folding flexible screen device (under the state of the gap-eliminating compensation mechanism).
Fig. 4 is a schematic perspective view of a left-hand fold-over in an ultrathin handheld outward folding flexible screen device of the invention.
Fig. 5 is a schematic perspective view of a right-hand fold-over in an ultrathin handheld outward folding flexible screen device of the invention.
Fig. 6 is a schematic perspective view of a transitional connection in an ultra-thin handheld outward folding flexible screen device of the present invention.
Fig. 7 is a schematic perspective view of a transitional connection portion (with a cover removed) in the ultrathin handheld folding flexible screen device according to the invention.
Fig. 8 is a schematic perspective view of a transitional connection portion in the ultrathin handheld outward folding flexible screen device (in a folded state).
Fig. 9 is a schematic perspective view of a hub in an ultra-thin handheld, fold-out flexible screen device of the present invention.
Fig. 10 is a schematic perspective view of a central member (with the cover removed) of the ultra-thin handheld folding flexible screen device of the present invention.
Fig. 11 is a schematic perspective view of a left-hand deflection member in an ultra-thin handheld, outwardly folded flexible screen apparatus of the present invention.
Fig. 12 is a schematic perspective view of a right deflection member in the ultra thin handheld outward folding flexible screen apparatus of the present invention.
Fig. 13 is a schematic perspective view of a gear engagement mechanism in an ultra-thin handheld folding flexible screen device of the present invention.
Fig. 14 is a top view of fig. 6.
Fig. 15 is an enlarged partial view of I of fig. 14.
Fig. 16 is a partial enlarged view of II of fig. 14.
Fig. 17 is a sectional view A-A of fig. 14.
Fig. 18 is a B-B cross-sectional view of fig. 14.
Fig. 19 is a schematic perspective view of a left-hand slider in an ultra-thin handheld, outward folding flexible screen apparatus of the present invention.
Fig. 20 is a schematic perspective view of a right-hand slider in an ultra-thin handheld, outward folding flexible screen apparatus of the present invention.
Fig. 21 is a top view of fig. 2.
Fig. 22 is a C-C cross-sectional view of fig. 21.
Fig. 23 is a D-D sectional view of fig. 21.
Fig. 24 is a schematic perspective view of a second view of the ultra-thin handheld, folded-out flexible screen apparatus of the present invention.
Fig. 25 is a top view of fig. 24.
Fig. 26 is an E-E sectional view of fig. 25.
Fig. 27 is an enlarged view of part III of fig. 26.
Fig. 28 is a schematic perspective view of a left gap compensation plate in an ultra-thin handheld outward folding flexible screen apparatus of the present invention.
Fig. 29 is a schematic perspective view of a right-hand gap compensation plate in an ultra-thin, hand-held, folded-out flexible screen apparatus of the present invention.
1-A flexible screen; 2-left folding body; 21-left top wall; the gear comprises a gear housing, a gear housing, a gear rotating, a gear rotating, a rotating, a rotating The device comprises a slot opening, a 49-right sliding piece, a 491-right locking slot, a 410-left locking mechanism, a 4101-first left cylindrical spring, a 4102-left locking block, a 41021-left locking tooth, a 411 a-right locking mechanism, a 411a 1-first right cylindrical spring, a 411a 2-right locking block, a 411a 21-right locking tooth, a 5-clearance compensation mechanism, a 51-left clearance compensation plate, a 511-left sliding bearing part, a 52-right clearance compensation plate, a 521-right sliding bearing part, a 53-left elastic restoring unit, a 531-second left cylindrical spring, a 54-right elastic restoring unit and a 541-second right cylindrical spring.
Detailed Description
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "front", "rear", "upper", "lower", "left", "right", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The disclosure of the present invention will be described in further detail with reference to the specific embodiments, and as shown in fig. 1,2 and 3, the ultrathin handheld outward folding flexible screen device mainly comprises a flexible screen 1, a left folding body 2, a right folding body 3, a transitional connection portion 4 and the like. Wherein, the left-side turnover body 2 and the right-side turnover body 3 are assembled with the transitional connecting part 4 into a whole. The flexible screen 1 is bonded and fixed by the left turnover body 2 and the right turnover body 3 in a cooperative manner, and passes through the transition connecting part 4 in a non-bonded state.
As shown in fig. 6 and 7, the transition joint 4 is mainly composed of a hub 41, a left deflector 42, a right deflector 43, a left transition plate 44, a right transition plate 45, a flexible curved body 46, a gear engagement mechanism 47, and the like. Wherein, the left deflection piece 42 and the right deflection piece 43 are oppositely arranged, are assembled on the central piece 41, and can perform circumferential rotation movement around the central axis of the central piece 41 under the action of manual screen folding force. In the unfolded state, flexible flexure 46 is in a flattened state and is held in critical contact with hub 41 (as shown in fig. 6, 7). In the folded condition, flexible flexure 46 is in a flexed condition and circumferentially surrounds hub 41 (as shown in FIG. 8). The flexible curved body 46 is preferably a rubber band having excellent elasticity and excellent tensile ductility. As shown in fig. 2, the left transition plate 44 serves as a connecting transition between the left fold-over body 2 and the flexible curved body 46 and is in contact with the left deflector 42. The right transition plate 45 serves as a connecting transition between the right fold-over body 3 and the flexible curved body 46 and is in contact with the right deflection element 43.
As shown in fig. 7 and 13, the gear engagement mechanism 47 is mainly composed of a left gear 471, a left slide arm 472, a right gear 473, a right slide arm 474, and the like. As shown in fig. 7, the left gear 471 and the right gear 473 are both assembled inside the hub 41 and intermeshed. As shown in fig. 9 and 10, the hub 41 is preferably a split structure, which is formed by buckling the hub body 411 and the cover 412. The hub body 411 is formed with a left gear receiving groove 4111 and a right gear receiving groove 4112 for receiving the left gear 471 and the right gear 473, respectively.
As shown in fig. 11, the left deflection member 42 is mainly composed of a left base body 421, a first left deflection arm 422, a second left deflection arm 423, and the like. The left base body 421 is provided with a first left sliding groove 4211 adapted to the left sliding arm 472. As shown in fig. 12, the right deflection member 43 is mainly composed of a right base body 431, a first right deflection arm 432, a second right deflection arm 433, and the like. The right base body 431 is provided with a first right sliding groove 4311 adapted to the right sliding arm 474. As shown in fig. 13, the left slide arm 472 is welded integrally with the left gear 471 and it penetrates into the first left slide groove 4211. The right slide arm 474 is welded integrally with the right gear 473 and it penetrates into the first right slide slot 4311. In the folding operation process, the left gear 471 and the right gear 473 perform the reverse rotation movement, and at the same time, the left sliding arm 472 and the right sliding arm 474 perform the sliding movement along the first left sliding groove 4211 and the first right sliding groove 4311, respectively, and concomitantly, the left folding body 2 and the right folding body 3 are folded synchronously.
In the technical scheme disclosed by the invention, the transition connection part 4 is used as the connection transition between the left turnover body 2 and the right turnover body 3, and the flexible screen 1 cooperatively fixed by the left turnover body 2 and the right turnover body 3 passes through the transition connection part 4 in a non-bonding state. In the process of carrying out the folding operation, the left folding body 2 carries out 180-degree folding movement relative to the right folding body 3, the posture of the transition connecting part 4 is changed, and meanwhile, the flexible screen 1 is subjected to the action of folding force to generate adaptive bending deformation. The main structure of the transitional coupling part 4 is a gear engagement mechanism 47. The gear engagement mechanism 47 is mainly composed of two oppositely engaged left gears 471 and right gears 473. In the folding operation process, the left gear 471 and the right gear 473 perform a reverse rotation motion due to the folding force, and at the same time, the left sliding arm 472 integrally fixed to the left gear 471 and the right sliding arm 474 integrally fixed to the right gear 473 perform a sliding motion along the first left sliding groove 4211 and the first right sliding groove 4311, respectively, and accordingly, the left folding body 2 and the right folding body 3 are synchronously folded until the 180 ° folding operation is completed.
The ultrathin handheld outward-folding flexible screen device has the following beneficial technical effects in practical application:
1) On the premise of ensuring that the left turnover body 2 and the right turnover body 3 can accurately realize 180-degree turnover actions, the transition connecting part 4 has relatively less parts, is beneficial to optimizing layout of workshop spare parts and assembly lines, has extremely high requirements on assembly precision due to the left gear 471 and the right gear 473 which only have meshing requirements, greatly reduces assembly difficulty and is beneficial to improving the yield of finished products;
2) In the process of realizing the folding action, the left gear 471 and the right gear 473 execute reverse rotation movement, and the left sliding arm 472 and the right sliding arm 474 respectively and independently execute directional sliding movement, so that the theoretical folding radius is effectively reduced, thereby providing a good bedding for further reducing the thickness dimension of the outward folding flexible screen device;
3) After the screen folding operation is finished, the left folding body 2 and the right folding body 3 can be kept in a close fitting state for a long time, so that good folding attractiveness and user experience are ensured.
Here, it should be further emphasized that in the unfolded state, the flexible screen 1 passes over the flexible curved body 46 in a non-bonded state, and the flexible curved body 46 is in a flattened state and is kept in critical contact with the hub 41. And in the screen folding process, the flexible bending body 46 and the flexible screen 1 bend in the same direction, and the flexible bending body 46 and the flexible screen 1 always keep in a contact state in the whole process, and the flexible bending body 46 always provides an elastic buffer gasket for the turnover area of the flexible screen 1. Therefore, the problem that obvious folds are easy to occur in the folding area of the flexible screen 1 can be effectively solved, good film watching and game experience of a user are guaranteed, the folding area is different from a water drop-shaped design structure common to domestic manufacturers, and the probability of occurrence of large-area flatness out-of-tolerance phenomenon caused by influence of multiple folding operations on the folding area can be effectively reduced.
On the premise of ensuring that the transition connection part 4 is smoothly and smoothly adjusted in the process of performing the folding operation, the design structure is simplified as much as possible, the assembly difficulty is reduced, and further, in order to speed up the production takt of a single device, as shown in fig. 11, the left base body 421 is contacted with the left transition plate 44. The first left deflection arm 422 and the second left deflection arm 423 are each formed by continuing to extend from the left base 421, and are arranged side by side along the width direction of the left base 421. Near the free ends, a first left-hand arc-shaped deflection portion 4221 and a second left-hand arc-shaped deflection portion 4231 are respectively formed on the first left-hand deflection arm 422 and the second left-hand deflection arm 423. As shown in fig. 12, 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 are each formed by continuing to extend from the right base 431, and are arranged side by side along the width direction of the right base 431. Near the free end, a first right arc-shaped deflection part 4321 and a second right arc-shaped deflection part 4331 are respectively formed on the first right deflection arm 432 and the second right deflection arm 433. As shown in fig. 10, the central body 411 is formed with a first arc-shaped receiving groove 4113, a second arc-shaped receiving groove 4114, a third arc-shaped receiving groove 4115, and a fourth arc-shaped receiving groove 4116 respectively, which are matched with 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. When receiving the manual screen folding force, the first left-hand arc-shaped deflection portion 4221 and the second left-hand arc-shaped deflection portion 4231 perform the circumferential sliding movement along the first arc-shaped accommodation groove 4113 and the second arc-shaped accommodation groove 4114, respectively, the left-hand deflection member 42 performs the circumferential rotation movement about the central axis of the hub 41, and at the same time, the first right-hand arc-shaped deflection portion 4321 and the second right-hand arc-shaped deflection portion 4331 perform the circumferential sliding movement along the third arc-shaped accommodation groove 4115 and the fourth arc-shaped accommodation groove 4116, respectively, and the right-hand deflection member 43 performs the circumferential rotation movement about the central axis of the hub 41. By adopting the technical scheme, on one hand, in the process of carrying out the screen folding operation, the left deflection piece 42 and the right deflection piece 43 perform circumferential rotation motion around the central axis of the central piece 41, namely, the virtual round folding design is realized, so that a good bedding is carried out for the reduction of the thickness dimension of the handheld outward folding flexible screen device, and on the other hand, the left foundation body 421 and the right foundation body 431 are respectively kept in a contact state with the left transition plate 44 and the right transition plate 45 instead of the conventional adhesive fixed design, so that the flexible screen 1 is ensured not to be directly acted by the pulling force in the whole screen folding process, and longer service life of the flexible screen is ensured.
For further increasing the structural stability of the left-side folding body 2, the right-side folding body 3 and the transition connecting portion 4 after being assembled, and when the transition connecting portion 4 is subjected to the action of the folding force to change the posture, the left-side folding body 2 can stably execute the 180-degree folding action relative to the right-side folding body 3, as a further optimization of the above technical scheme, as shown in fig. 4, the left-side folding body 2 includes a left-side top wall 21 and a left-side bottom wall 22 which are opposite along the thickness direction thereof. As shown in fig. 5, the right turn-up body 3 includes a right top wall 31 and a right bottom wall 32 which are opposed in the thickness direction thereof. As shown in fig. 2 and 3, the left and right top walls 21 and 31 are respectively used to directly interface with the left and right transition plates 44 and 45. As shown in fig. 6 and 7, the transition connection 4 is further provided with a left-hand slider 48 and a right-hand slider 49. The left sliding member 48 is matched with the left deflection member 42, and a second left sliding groove 4212 matched with the left sliding member 48 is formed on the left base body 421. The right sliding member 49 is matched with the right deflection member 43, and a second right sliding groove 4312 matched with the right sliding member 49 is formed on the right base body 431. The left sliding piece 48 and the right sliding piece 49 are respectively contacted with the inner side surfaces of the left bottom wall 22 and the right bottom wall 32, and are adhered and fixed. When the screen folding operation is performed, the left deflector 42 and the right deflector 43 each perform a circumferential rotational movement about the central axis of the hub 41, the left slider 48 performs a sliding movement along the second left sliding groove 4212, the depth value of the left sliding chamber 23 formed by the left deflector 42 extending into the left top wall 21 and the left bottom wall 22 being closed together is adaptively changed (as shown in fig. 21, 22), and at the same time, the right slider 49 performs a sliding movement along the second right sliding groove 4312, and the depth value of the right sliding chamber 33 formed by the right deflector 43 extending into the right top wall 31 and the right bottom wall 32 being closed together is adaptively changed (as shown in fig. 21, 23).
As shown in fig. 14, the transitional coupling portion 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 slider 48 and a left mounting cavity 4213 is provided in the left deflector 42 for receiving the left slider. The right locking mechanism 411a is adapted to the right slider 49, and a right mounting chamber 4313 for accommodating the right deflector 43 is provided on the right deflector. After the folding is finished, under the auxiliary action of the left locking mechanism 410, the left sliding piece 48 is in a temporary locking state relative to the left deflection piece 42, and under the auxiliary action of the right locking mechanism 411a, the right sliding piece 49 is in a temporary locking state relative to the right deflection piece 43, so that the left folding body 2 and the right folding body 3 are kept in a stable locking state relative to the transition connecting portion 4, and when the folding angle is acted by an unexpected force again, the folding angle is always kept at a fixed value, and the ultrathin handheld outward folding flexible screen device is ensured to have good use experience.
As is known, according to the common general knowledge, the left locking mechanism 410 and the right locking mechanism 411a may take various designs to achieve a good locking function, however, an embodiment is proposed herein in which the design is simple, easy to manufacture and implement, and the "jamming" phenomenon is effectively prevented, specifically, as shown in fig. 19, a left locking notch 481 is formed on one side of the left slider 48. As shown in fig. 15 and 17, the left lock mechanism 410 is mainly composed of a first left pillar spring 4101, a left lock block 4102, and the like. The left lock block 4102 is molded with left lock teeth 41021 that fit into the left lock notch 481. The first left pillar spring 4101 and the left lock block 4102 are both fitted into the left mounting chamber 4213, and the first left pillar spring 4101 always applies an elastic urging force toward the left lock block 4102. In the screen folding process, the left slider 48 performs a directional sliding motion along the second left sliding groove 4212, the left locking block 4102 is subjected to the elastic pushing force from the first left cylindrical spring 4101, so that the upper left locking tooth 41021 is in contact with the left slider 48, and the left locking tooth 41021 slides freely along the length direction of the left slider 48 until sinking into the left locking notch 481, so that the screen folding angle of the left folding body 2 is temporarily locked. As shown in fig. 20, a right-set locking notch 491 is opened at one side of the right-set slider 49. As shown in fig. 16 and 18, the right lock mechanism 411a is mainly composed of a first right column spring 411a1, a right lock block 411a2, and the like. The right locking block 411a2 is molded with right locking teeth 411a21 that fit into the right locking notch 491. The first right cylindrical spring 411a1 and the right locking piece 411a2 are both installed in the right installation cavity 4313, and the first right cylindrical spring 411a1 always applies an elastic pushing force toward the right locking piece 411a 2. In the screen folding process, the right sliding member 49 performs a directional sliding movement along the second right sliding groove 4312, the right locking block 411a2 is under the elastic pushing force from the first right column spring 411a1, so that the upper right locking tooth 411a21 of the right locking block is in contact with the right sliding member 49, and the right locking tooth 411a21 slides freely along the length direction of the right sliding member 49 until sinking into the right locking notch 491, so that the screen folding angle of the right folding body 3 is temporarily locked. when the user performs the opening operation, the left deflector 42 and the right deflector 43 perform the reverse rotation movement around the central axis of the central member 41, and the left locking tooth 41021 and the right locking tooth 411a21 are forced to be separated from the left locking notch 481 and the right locking notch 491 respectively, at the same time, the first left cylindrical spring 4101 and the first right cylindrical spring 411a1 are self-adaptively retracted due to the extrusion force, so that the subsequent left turnover body 2 and right turnover body 3 can be flattened by 180 ° relative to the transitional connecting portion 4.
As shown in fig. 24, the ultra-thin handheld folding-outward flexible screen device is further added with a gap compensation mechanism 5. The backlash compensation mechanism 5 includes a left backlash compensation plate 51, a right backlash compensation plate 52, a left elastic restoring unit 53, and a right elastic restoring unit 54 (as shown in fig. 25 to 27). In the folded state, the left gap compensation plate 51 contacts the hub 41, and is pushed by the right gap compensation plate 52 to perform displacement movement along the left sliding chamber 23, and the left elastic restoring unit 53 synchronously stores elastic potential energy. The right lash compensation plate 52, which is opposite to the left lash compensation plate 51, is also in contact with the hub 41, and performs a displacement motion along the right sliding chamber 33 due to being pushed by the left lash compensation plate 51, and the right elastic restoring unit 54 synchronously stores elastic potential energy. Along with the continuation of the screen display operation process, the elastic potential energy stored in the left elastic restoring unit 53 and the right elastic restoring unit 54 is released, and the left gap compensation plate 51 and the right gap compensation plate 52 execute opposite displacement movement under the action of the tensile force from the left elastic restoring unit 53 and the right elastic restoring unit 54.
As a further refinement of the above-described embodiments, as shown in fig. 28 and 29, the left and right backlash compensation plates 51 and 52 are formed with left and right sliding bearing portions 511 and 521, respectively. Correspondingly, a third left sliding groove 4214 adapted to the left sliding bearing portion 511 is formed on the left base body 421, and a third right sliding groove 4314 adapted to the right sliding bearing portion is formed on the right base body 431 (as shown in fig. 11 and 12). As shown in fig. 27, the left elastic restoring unit 53 includes a second left cylindrical spring 531. The right elastic restoring unit 54 includes a second right column spring 541. The second left cylindrical spring 531 is built in the third left sliding groove 4214, and is maintained in an elastically pressed deformed state by the combined pressing force from the left sliding bearing portion 511 and the left deflector 42. The second right cylindrical spring 541 is housed in the third right sliding groove 4314, and is held in an elastically pressed deformed state by the combined pressing force from the right sliding bearing portion 521 and the right deflector 43.
In the process of carrying out the folding operation, the left folding body 2 and the right folding body 3 execute 180-degree folding action relative to the transitional connecting part 4, the left gap compensation plate 51 and the right gap compensation plate 52 generate self-adaptive backspacing motion due to the action of pushing and extruding force, the second left columnar spring 531 and the second right columnar spring 541 store elastic potential energy, in the process of carrying out the unfolding operation, gaps formed by the left folding body 2 and the right folding body 3 due to folding are gradually increased, and the left gap compensation plate 51 and the right gap compensation plate 52 respectively cover the gaps in real time under the action of the elastic restoring force of the second left columnar spring 531 and the second right columnar spring 541, so that the transitional connecting part 4 is ensured to be kept in a hidden state in the process of carrying out the folding operation or the process of unfolding, and the application experience of a user on the folding screen of the ultra-thin handheld outward folding flexible screen device is improved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.