A rotating shaft mechanism for a flexible screen

Abstract

The present invention discloses a rotating shaft mechanism of a flexible screen, which is used to be arranged at the flipping and folding part of the flexible screen and can bend with the flipping and folding of the flexible screen, including: a plurality of rotating shaft chains arranged side by side and spaced apart, and a connecting shaft for fixing the rotating shaft chains, wherein the connecting shafts are two, and the two ends of the first rotating shaft chain and the last rotating shaft chain are respectively fixed at the first two ends of the two connecting shafts to form a rectangle. The present invention arranges four rotating shaft gear parts on the rotating shaft chain and meshes together through gears, so that when the rotating shaft mechanism is bent, the four rotating shaft gear parts cooperate with each other to compensate for the length variable of the rotating shaft after bending, thereby avoiding the phenomenon that the rotating shaft and the flexible screen cannot be synchronized due to the shortened length after bending, and in the process of bending the rotating shaft, the four rotating shaft gear parts cooperate with each other to make the rotating shaft thinner, thereby avoiding the phenomenon that the gears are squeezed against each other to cause the rotating shaft mechanism to be damaged and the flexible screen to fail.

Description

Technical Field

[0001] The present invention relates to the technical field of display devices, and in particular to a hinge mechanism for a flexible screen. Background Art

[0002] With the continuous development of technology, people's pursuit of display screens is not limited to curved screens. Foldable mobile terminals (such as foldable mobile phones, foldable tablets, etc.) are gradually appearing in people's lives. Foldable mobile terminals usually include three parts: a flexible screen, a coupling layer, and a foldable component. The flexible screen has the function of controlling the display of the device, and the foldable component has the function of folding and flattening; the coupling layer is usually optical glue, and the flexible screen and the foldable component are bonded through the coupling layer. Flexible screens are generally made of materials with excellent flexibility. They have the characteristics of low power consumption and bendability. They can be used to change their appearance according to their own needs to meet personal use. They can be widely used in personal smart terminals or wearable devices. Flexible screens are a further extension of people's demand for curved screens, and can also be said to be people's pursuit of display screens.

[0003] Existing flexible screens generally use a shaft bending to assist the flexible screen to bend, and the transmission is carried out through two gears that fit together, and the torque is generated by the mutual squeezing of the tooth surfaces. The defect of this shaft mechanism is that the working mode is rigid and not flexible enough. After the shaft that is transmitted by two gears that fit together is bent, the length of the shaft will become shorter, which will cause the shaft and the flexible screen to be out of sync. In addition, during the folding process, because the material stiffness of the two gears is too high, the bending part of the flexible screen will be squeezed by the two gears that fit together, which can easily cause the shaft mechanism to be damaged and the flexible screen to fail.

[0004] In view of the shortcomings of the prior art, a device for a rotating shaft mechanism of a flexible screen is urgently needed in the industry. Summary of the invention

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a hinge mechanism for a flexible screen.

[0006] To achieve the aforementioned objectives, the present invention adopts the following technical solutions.

[0007] The present invention provides a rotating shaft mechanism of a flexible screen, which is used to be set at the flipping and folding position of the flexible screen and can bend with the flipping and folding of the flexible screen, including: a plurality of rotating shaft chains arranged side by side and at intervals, and a connecting shaft for fixing the rotating shaft chains, wherein the connecting shafts are two, and the two ends of the first rotating shaft chain and the last rotating shaft chain are respectively fixed at the first two ends of the two connecting shafts to form a rectangle; the rotating shaft chain includes: a plurality of first rotating shaft gear parts arranged side by side and at intervals, a second rotating shaft gear part is arranged between each adjacent first rotating shaft gear part, the first rotating shaft gear part and the second rotating shaft gear part are alternately arranged side by side and at intervals, a third rotating shaft gear part is arranged directly above the first rotating shaft gear part, and a fourth rotating shaft gear part is arranged directly above the second rotating shaft gear part, wherein gears are arranged on the first rotating shaft gear part, the second rotating shaft gear part, the third rotating shaft gear part and the fourth rotating shaft gear part, the first rotating shaft gear part and the fourth rotating shaft gear part are meshed together through gears, and the second rotating shaft gear part and the third rotating shaft gear part are meshed together through gears.

[0008] As a further improvement of the present invention, the rotating shaft chain also includes a rotating shaft chain connecting part arranged at the left and right ends of the rotating shaft chain, one end of the rotating shaft chain connecting part is fixedly connected to the connecting shaft, and a gear is arranged at the end of the rotating shaft chain connecting part away from the connecting shaft, and the rotating shaft chain connecting part is meshed with the third rotating shaft gear part through gears.

[0009] As a further improvement of the present invention, first gears are arranged at the four corners of the first rotating shaft gear member, the first gear is semi-cylindrical, an elliptical first through hole is arranged at the center of the first gear, and the edge of the first through hole extends along the inner side of the first gear to form a boss.

[0010] As a further improvement of the present invention, second gears are arranged at the four corners of the second rotating shaft gear member, the second gear is semi-cylindrical, a circular second through hole is arranged at the center of the second gear, and first grooves for the second rotating shaft gear member to be inserted into are arranged at the left and right ends of the first rotating shaft gear member, the second rotating shaft gear member can be inserted into the first rotating shaft gear member after the second gear and the first groove cooperate with each other, and after the second rotating shaft gear member is inserted into the first rotating shaft gear member, the extension line of the cylindrical center line of the second through hole coincides with the extension line of the cylindrical center line of the first through hole.

[0011] As a further improvement of the present invention, a nut is provided at one end of the rotating shaft chain connecting piece, and a third gear is provided at the end of the rotating shaft chain connecting piece away from the nut. The third gear is semi-cylindrical, and a circular third through hole is provided at the center of the third gear. The rotating shaft chain connecting piece can be inserted into the first rotating shaft gear piece after the third gear and the first groove cooperate with each other, and after the rotating shaft chain connecting piece is inserted into the first rotating shaft gear piece, the extension line of the cylindrical center line of the third through hole coincides with the extension line of the cylindrical center line of the first through hole.

[0012] As a further improvement of the present invention, a second groove is arranged directly above the first rotating shaft gear component, the third rotating shaft gear component is arranged in the second groove directly above the first rotating shaft gear component, and fourth gears are arranged at the four corners of the third rotating shaft gear component. The fourth gear is semi-cylindrical, and a circular fourth through hole is arranged at the center of the fourth gear.

[0013] As a further improvement of the present invention, a third groove is arranged directly above the second rotating shaft gear component, the fourth rotating shaft gear component is arranged in the third groove directly above the second rotating shaft gear component, and fifth gears are arranged at the four corners of the fourth rotating shaft gear component. The fifth gear is semi-cylindrical, and a circular fifth through hole is arranged at the center of the fifth gear.

[0014] As a further improvement of the present invention, a fourth groove is arranged between two adjacent front and rear fourth gears, and a fifth groove is arranged between two adjacent front and rear second gears. A first connecting member is arranged in the space where the fourth groove and the fifth groove are combined. A first locking buckle and a second locking buckle are arranged at both ends of the first connecting member. Both the first locking buckle and the second locking buckle are cylindrical structures. A circular sixth through hole and a seventh through hole are respectively arranged at the centers of the first locking buckle and the second locking buckle. The first locking buckle can be snapped into the fourth groove, and after the first locking buckle is snapped into the fourth groove, the extension line of the cylindrical center line of the sixth through hole coincides with the extension line of the cylindrical center line of the fourth through hole. The second locking buckle can be snapped into the fifth groove, and after the second locking buckle is snapped into the fifth groove, the extension line of the cylindrical center line of the seventh through hole coincides with the extension line of the cylindrical center line of the second through hole.

[0015] As a further improvement of the present invention, a sixth groove is arranged between the two adjacent front and rear fifth gears, a second connecting piece is arranged on the sixth groove, a first locking ring and a second locking ring are arranged at both ends of the second connecting piece, the first locking ring and the second locking ring are both semi-cylindrical, and a circular eighth through hole and a ninth through hole are respectively arranged at the centers of the first locking ring and the second locking ring, one end of the second connecting piece provided with the first locking ring can be inserted into the sixth groove, and after the second connecting piece is inserted into the sixth groove, the extension line of the cylindrical center line of the eighth through hole and the extension line of the cylindrical center line of the fifth through hole coincide with each other, one end of the second connecting piece provided with the second locking ring can be inserted into the boss, and after the second connecting piece is inserted into the sixth groove, the extension line of the cylindrical center line of the ninth through hole and the extension line of the cylindrical center line of the first through hole coincide with each other.

[0016] As a further improvement of the present invention, the rotating shaft chain also includes a first limiting rod, a second limiting rod, a third limiting rod and a fourth limiting rod. The first limiting rod sequentially passes through the first through hole, the ninth through hole, the second through hole, and the seventh through hole. The second limiting rod sequentially passes through the fourth through hole and the sixth through hole. The third limiting rod sequentially passes through the fifth through hole and the eighth through hole. The fourth limiting rod sequentially passes through the third through hole and the seventh through hole.

[0017] The present invention provides a rotating shaft mechanism for a flexible screen. Four rotating shaft gear parts are arranged on the rotating shaft chain belt and meshed together through gears. When the rotating shaft mechanism is bent, the four rotating shaft gear parts cooperate with each other to compensate for the length variable of the rotating shaft after bending, thereby avoiding the phenomenon that the rotating shaft and the flexible screen cannot be synchronized due to the shortened length after bending. In addition, during the bending process of the rotating shaft, the four rotating shaft gear parts cooperate with each other to make the rotating shaft thinner, thereby avoiding the phenomenon that the rotating shaft mechanism is damaged and the flexible screen fails due to mutual squeezing between the gears. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a rotating shaft mechanism of a flexible screen of the present invention;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the rotating shaft chain belt of the present invention;

[0020] Figure 3 It is a partial exploded schematic diagram of the rotating shaft chain belt of the present invention.

[0021] Wherein: 1-rotating shaft chain; 2-connecting shaft; 101-first rotating shaft gear; 102-second rotating shaft gear; 103-third rotating shaft gear; 104-fourth rotating shaft gear; 105-rotating shaft chain connecting member; 106-first connecting member; 107-second connecting member; 108-first limiting rod; 109-second limiting rod; 110-third limiting rod; 111-fourth limiting rod; 101a-first gear; 101b-first through hole; 101c-boss; 101d-first groove; 101e-second groove; 102a-second gear; 10 2b-second through hole; 102c-third groove; 102d-fifth groove; 103a-fourth gear; 103b-fourth through hole; 103c-fourth groove; 104a-fifth gear; 104b-fifth through hole; 104c-sixth groove; 105a-nut; 105b-third gear; 105c-third through hole; 106a-first locking buckle; 106b-second locking buckle; 106c-sixth through hole; 106d-seventh through hole; 107a-first locking ring; 107b-second locking ring; 107c-eighth through hole; 107d-ninth through hole. DETAILED DESCRIPTION

[0022] The technical solution will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Reference Figure 1 According to a first aspect of the present invention, a hinge mechanism for a flexible screen is provided, which is used to be set at the flipping and folding position of the flexible screen and can bend with the flipping and folding of the flexible screen, and comprises: a plurality of hinge chains 1 arranged side by side and spaced apart, and a connecting shaft 2 for fixing the hinge chains 1, wherein there are two connecting shafts 2, and the two ends of the first hinge chain 1 and the last hinge chain 1 are respectively fixed at the two ends of the first ends of the two connecting shafts 2 to form a rectangle, and the hinge mechanism of the flexible screen can be connected to the flexible screen.

[0024] As a preferred embodiment of the present invention, three rotating shaft chains 1 are provided, and the distance between the diameters of every two adjacent rotating shaft chains 1 is the same. The rotating shaft chain 1 can bend as the flexible screen is flipped and folded. According to needs, 5, 7 or 9 rotating shaft chains 1 can be arranged side by side in the rotating shaft mechanism at intervals, and the distance between the diameters of every two adjacent rotating shaft chains 1 is the same. The number of rotating shaft chains 1 can be increased or decreased according to the size of the flexible screen and the weight of the flexible screen, so as to meet the requirements of supporting strength and supporting stability when the rotating shaft chains 1 support the screen. This application does not impose any special restrictions on the number of rotating shaft chains 1.

[0025] Reference Figure 2 The rotating shaft chain belt 1 includes: a plurality of first rotating shaft gear components 101 arranged side by side at intervals, a second rotating shaft gear component 102 is arranged between each adjacent first rotating shaft gear component 101, the first rotating shaft gear components 101 and the second rotating shaft gear components 102 are arranged alternately side by side at intervals, a third rotating shaft gear component 103 is arranged directly above the first rotating shaft gear component 101, and a fourth rotating shaft gear component 104 is arranged directly above the second rotating shaft gear component 102, wherein the first rotating shaft gear component 101, the second rotating shaft gear component 102, the third rotating shaft gear component 103 and the fourth rotating shaft gear component 104 are all provided with gears, and the first rotating shaft gear component 101 and the fourth rotating shaft gear component 104 are arranged at intervals between each other. 104 are meshed together through gears, and the second shaft gear component 102 and the third shaft gear component 103 are meshed together through gears. When the shaft chain belt 1 is in the unfolded state, there is a certain gap between the third shaft gear component 103 and the first shaft gear component 101. During the bending process of the shaft chain belt 1, due to the interaction of the gears, the third shaft gear component 103 will slowly approach the first shaft gear component 101 until it is completely fitted with the first shaft gear component 101. At this time, the thickness of the shaft chain belt 1 becomes relatively thinner, and the internal space of the shaft chain belt 1 after the thickness becomes thinner is relatively larger, and the flexible screen placed in the shaft chain belt 1 will not fail due to squeezing.

[0026] As a preferred embodiment of the present invention, the first shaft gear members 101 are set to 7, the third shaft gear members 103 are also set to 7 corresponding to the first shaft gear members 101, the second shaft gear members 102 are set to 6, and the fourth shaft gear members 104 are also set to 6 corresponding to the second shaft gear members 102. A combination of a first shaft gear member 101 and a third shaft gear member 103 can be used as a first shaft gear member group, and a second shaft gear member 102 and a third shaft gear member 103 can be used as a second shaft gear member group. Each two adjacent groups A second rotating shaft gear component group is arranged between the first rotating shaft gear component group. In the present invention, the number of the first rotating shaft gear component groups is 7 groups, and the corresponding second rotating shaft gear component groups are set to 6 groups. The number of the first rotating shaft gear component groups can be set to 8 groups as needed, and the corresponding second rotating shaft gear component groups can be set to 7 groups. The number of the first rotating shaft gear component groups and the second rotating shaft gear component groups can be increased or reduced according to the bending angle of the rotating shaft, so as to meet the requirement of the bending angle when the rotating shaft is bent. The present application does not impose any special restriction on the number of the first rotating shaft gear component groups and the second rotating shaft gear component groups.

[0027] The rotating shaft chain belt 1 also includes a rotating shaft chain belt connector 105 arranged at the left and right ends of the rotating shaft chain belt 1, one end of the rotating shaft chain belt connector 105 is fixedly connected to the connecting shaft 2, and a gear is arranged at the end of the rotating shaft chain belt connector 105 away from the connecting shaft 2, and the rotating shaft chain belt connector 105 is meshed with the third rotating shaft gear part 103 through gears.

[0028] Reference Figure 3 The first shaft gear member 101 is provided with first gears 101a at the four corners. The first gear 101a is semi-cylindrical. An elliptical first through hole 101b is provided at the center of the first gear 101a. The edge of the first through hole 101b extends along the inner side of the first gear 101a to form a boss 101c.

[0029] Second gears 102a are provided at the four corners of the second rotating shaft gear member 102. The second gear 102a is semi-cylindrical, and a circular second through hole 102b is provided at the center of the second gear 102a. First grooves 101d for the second rotating shaft gear member 102 to be inserted into are provided at the left and right ends of the first rotating shaft gear member 101. The second rotating shaft gear member 102 can be inserted into the first rotating shaft gear member 101 after the second gear 102a and the first groove 101d cooperate with each other, and after the second rotating shaft gear member 102 is inserted into the first rotating shaft gear member 101, the extension line of the cylindrical center line of the second through hole 102b coincides with the extension line of the cylindrical center line of the first through hole 101b.

[0030] A nut 105a is provided at one end of the rotating shaft chain connecting member 105, and a third gear 105b is provided at the end of the rotating shaft chain connecting member 105 away from the nut 105a. The third gear 105b is semi-cylindrical, and a circular third through hole 105c is provided at the center of the third gear 105b. The rotating shaft chain connecting member 105 can be inserted into the first rotating shaft gear member 101 after the third gear 105b cooperates with the first groove 101d, and after the rotating shaft chain connecting member 105 is inserted into the first rotating shaft gear member 101, the extension line of the cylindrical center line of the third through hole 105c coincides with the extension line of the cylindrical center line of the first through hole 101b.

[0031] A second groove 101e is arranged directly above the first rotating shaft gear member 101, and the third rotating shaft gear member 103 is arranged in the second groove 101e directly above the first rotating shaft gear member 101. Fourth gears 103a are arranged at the four corners of the third rotating shaft gear member 103. The fourth gear 103a is semi-cylindrical, and a circular fourth through hole 103b is arranged at the center of the fourth gear 103a.

[0032] A third groove 102c is arranged directly above the second rotating shaft gear member 102, and the fourth rotating shaft gear member 104 is arranged in the third groove 102c directly above the second rotating shaft gear member 102. Fifth gears 104a are arranged at the four corners of the fourth rotating shaft gear member 104. The fifth gear 104a is semi-cylindrical, and a circular fifth through hole 104b is arranged at the center of the fifth gear 104a.

[0033] A fourth groove 103c is provided between two adjacent front and rear fourth gears 103a, two fourth grooves 103c are provided on each third rotating shaft gear member 103, a fifth groove 102d is provided between two adjacent front and rear second gears 102a, two fifth grooves 102d are provided on each second rotating shaft gear member 102, a first connecting member 106 is provided in the space where the fourth groove 103c and the fifth groove 102d are combined, and a first locking buckle 106a and a second locking buckle 106b are provided at both ends of the first connecting member 106, both of which are cylindrical structures, and the first locking buckle 106d is provided in a space where the fourth groove 103c and the fifth groove 102d are combined. A circular sixth through hole 106c and a seventh through hole 106d are respectively provided at the center of the first lock buckle 106a and the second lock buckle 106b. The first lock buckle 106a can be snapped into the fourth groove 103c, and after the first lock buckle 106a is snapped into the fourth groove 103c, the extension line of the cylindrical center line of the sixth through hole 106c coincides with the extension line of the cylindrical center line of the fourth through hole 103b. The second lock buckle 106b can be snapped into the fifth groove 102d, and after the second lock buckle 106b is snapped into the fifth groove 102d, the extension line of the cylindrical center line of the seventh through hole 106d coincides with the extension line of the cylindrical center line of the second through hole 102b.

[0034] A sixth groove 104c is provided between two adjacent front and rear fifth gears 104a, wherein two sixth grooves 104c are provided between the two adjacent front and rear fifth gears 104a, four sixth grooves 104c are provided on each fourth shaft gear member 104, a second connecting member 107 is provided on the sixth groove 104c, a first locking ring 107a and a second locking ring 107b are provided at both ends of the second connecting member 107, the first locking ring 107a and the second locking ring 107b are both semi-cylindrical, and a circular eighth through hole 107 is provided at the center of the first locking ring 107a and the second locking ring 107b. c and the ninth through hole 107d, one end of the first locking ring 107a provided on the second connecting member 107 can be snapped into the sixth groove 104c, and after the second connecting member 107 is snapped into the sixth groove 104c, the extension line of the cylindrical center line of the eighth through hole 107c and the extension line of the cylindrical center line of the fifth through hole 104b coincide with each other, and one end of the second locking ring 107b provided on the second connecting member 107 can be snapped into the boss 101c, and after the second connecting member 107 is snapped into the sixth groove 104c, the extension line of the cylindrical center line of the ninth through hole 107d and the extension line of the cylindrical center line of the first through hole 101b coincide with each other.

[0035] The rotating shaft chain belt 1 also includes a first limiting rod 108, a second limiting rod 109, a third limiting rod 110 and a fourth limiting rod 111. The first limiting rod 108, the second limiting rod 109, the third limiting rod 110 and the fourth limiting rod 111 are limiting rods with the same diameter. The diameters of the first limiting rod 108, the second limiting rod 109, the third limiting rod 110 and the fourth limiting rod 111 are slightly smaller than the small diameter of the first through hole 101b, so that after the first limiting rod 108, the second limiting rod 109, the third limiting rod 110 and the fourth limiting rod 111 are inserted into the elliptical first through hole 101b, they can be displaced left and right in the first through hole 101b, and can also be displaced front and back in the first through hole 101b. The diameters of the first limiting rod 108, the second limiting rod 109, the third limiting rod 110 and the fourth limiting rod 111 are Slightly smaller than the diameter of the second through hole 102b, the third through hole 105c, the fourth through hole 103b, the fifth through hole 104b, the sixth through hole 106c, the seventh through hole 106d, the eighth through hole 107c, and the ninth through hole 107d, the first limiting rod 108, the second limiting rod 109, the third limiting rod 110, and the fourth limiting rod 111 can be respectively inserted into the second through hole 102b, the third through hole 105c, the fourth through hole 103b, the fifth through hole 104b, the sixth through hole 106c, the seventh through hole 106d, the eighth through hole 107c, and the ninth through hole 107d. Displacement occurs back and forth in the second through hole 102b, the third through hole 105c, the fourth through hole 103b, the fifth through hole 104b, the sixth through hole 106c, the seventh through hole 106d, the eighth through hole 107c, and the ninth through hole 107d.

[0036] The first limiting rod 108 sequentially penetrates the first through hole 101b, the ninth through hole 107d, the second through hole 102b, and the seventh through hole 106d. After the first limiting rod 108 penetrates the first through hole 101b, the ninth through hole 107d, the second through hole 102b, and the seventh through hole 106d, the first rotating shaft gear member 101 is mutually limited with the second connecting member 107, the second rotating shaft gear member 102, and the first connecting member 106 respectively. The second limiting rod 109 sequentially penetrates the fourth through hole 103b, the sixth through hole 106c, and the first rotating shaft gear member 101 is mutually limited with the second connecting member 107, the second rotating shaft gear member 102, and the first connecting member 106. After the second limiting rod 109 passes through the fourth through hole 103b and the sixth through hole 106c in sequence, the third shaft gear member 103 and the first connecting member 106 are mutually limited, so that the third shaft gear member 103 is mutually limited with the first shaft gear member 101 and the second shaft gear member 102 respectively, and the third limiting rod 110 passes through the fifth through hole 104b and the eighth through hole 107c in sequence. After the third limiting rod 110 passes through the fifth through hole 104b and the eighth through hole 107c in sequence, the fourth shaft gear member 104 and the second shaft gear member 102 are mutually limited. The connecting members 107 are mutually limited, so that the fourth shaft gear member 104 is mutually limited with the first shaft gear member 101, the second shaft gear member 102, and the third shaft gear member 103 respectively, and the fourth limiting rod 111 sequentially penetrates the third through hole 105c and the seventh through hole 106d. After the fourth limiting rod 111 sequentially penetrates the third through hole 105c and the seventh through hole 106d, the shaft chain connecting member 105 and the first connecting member 106 are mutually limited, so that the shaft chain connecting member 105 and the first shaft gear Parts 101 are limited to each other, and each part is limited to each other by a limiting rod, so that the combined rotation between the 7 groups of first rotating shaft gear component groups and the 6 groups of second rotating shaft gear component groups is synchronous. When any group of first rotating shaft gear component groups or any group of second rotating shaft gear component groups in the rotating shaft chain belt 1 rotates, the remaining first rotating shaft gear component groups and the remaining second rotating shaft gear component groups will also rotate accordingly. The rotation angle of the rotating shaft chain belt 1 is the sum of the rotation angles of all the first rotating shaft gear component groups and all the second rotating shaft gear component groups that cooperate with each other.

[0037] It should also be noted that the first through hole 101b is set to an elliptical shape. Since the elliptical first through hole 101b has a certain space in the direction of the large diameter, after the first limit rod 108 is inserted into the first through hole 101b, the first limit rod 108 can be displaced left and right in the direction of the large diameter of the first through hole 101b. During the bending process of the rotating shaft chain belt 1, the first limit rod 108 is displaced in the direction of the large diameter of the first through hole 101b. The first limit rod 108 abutting the left side of the first through hole 101b will be displaced to the right side of the first through hole 101b, and the first limit rod 108 abutting the right side of the first through hole 101b will be displaced to the left side of the first through hole 101b. This can achieve compensation for the length variable of the rotating shaft after bending. The sum of the displacements in multiple first through holes 101b is the compensation amount for compensating for the length variable of the rotating shaft after bending, thereby avoiding the phenomenon that the rotating shaft and the flexible screen cannot be synchronized due to the shortening of the length after the rotating shaft is bent.

[0038] The present invention provides a rotating shaft mechanism for a flexible screen. Four rotating shaft gear parts are arranged on the rotating shaft chain belt and meshed together through gears. When the rotating shaft mechanism is bent, the four rotating shaft gear parts cooperate with each other to compensate for the length variable of the rotating shaft after bending, thereby avoiding the phenomenon that the rotating shaft and the flexible screen cannot be synchronized due to the shortened length after bending. In addition, during the bending process of the rotating shaft, the four rotating shaft gear parts cooperate with each other to make the rotating shaft thinner, thereby avoiding the phenomenon that the rotating shaft mechanism is damaged and the flexible screen fails due to mutual squeezing between the gears.

[0039] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A hinge mechanism for a flexible screen, which is used to be arranged at the flipping and folding position of the flexible screen and can bend with the flipping and folding of the flexible screen, characterized in that: It includes: a plurality of rotating shaft chain belts arranged side by side and spaced apart, and used for fixing connecting shafts of the rotating shaft chain belts, wherein the connecting shafts are two, and the two ends of the first rotating shaft chain belt and the last rotating shaft chain belt are respectively fixed at the first two ends of the two connecting shafts to form a rectangle; The rotating shaft chain belt comprises: a plurality of first rotating shaft gear members arranged side by side at intervals, a second rotating shaft gear member is arranged between each adjacent first rotating shaft gear member, the first rotating shaft gear member and the second rotating shaft gear member are arranged side by side at intervals and alternately, a third rotating shaft gear member is arranged directly above the first rotating shaft gear member, and a fourth rotating shaft gear member is arranged directly above the second rotating shaft gear member, wherein the first rotating shaft gear member, the second rotating shaft gear member, the third rotating shaft gear member and the fourth rotating shaft gear member are all provided with gears, the first rotating shaft gear member and the fourth rotating shaft gear member are meshed together through gears, and the second rotating shaft gear member and the third rotating shaft gear member are meshed together through gears; The first rotating shaft gear member is provided with first gears at four corners, an elliptical first through hole is provided at the center of the first gear, and the edge of the first through hole extends along the inner side of the first gear to form a boss; The second rotating shaft gear member is provided with second gears at four corners, a circular second through hole is provided at the center of the second rotating shaft gear member, and first grooves for the second rotating shaft gear member to be inserted into are provided at the left and right ends of the first rotating shaft gear member; A second groove is arranged directly above the first rotating shaft gear component, the third rotating shaft gear component is arranged in the second groove directly above the first rotating shaft gear component, fourth gears are arranged at four corners of the third rotating shaft gear component, and a circular fourth through hole is arranged at the center of the fourth gear; A third groove is arranged directly above the second rotating shaft gear component, the fourth rotating shaft gear component is arranged in the third groove directly above the second rotating shaft gear component, a fifth gear is arranged at each of the four corners of the fourth rotating shaft gear component, and a circular fifth through hole is arranged at the center of the fifth gear; A first connecting member is also provided, and a first lock buckle and a second lock buckle are provided at both ends of the first connecting member, the first lock buckle is connected and provided between two adjacent front and rear fourth gears, and the second lock buckle is connected and provided between two adjacent front and rear second gears, and a sixth circular through hole and a seventh circular through hole are provided at the centers of the first lock buckle and the second lock buckle respectively; A second connecting member is also provided, and a first locking ring and a second locking ring are provided at both ends of the second connecting member, and a circular eighth through hole and a circular ninth through hole are provided at the centers of the first locking ring and the second locking ring, respectively. One end of the first locking ring provided on the second connecting member is connected between two adjacent front and rear fifth gears, and one end of the second locking ring provided on the second connecting member can be clamped into the boss; The rotating shaft chain also includes a first limiting rod, a second limiting rod and a third limiting rod. The first limiting rod sequentially passes through the first through hole, the ninth through hole, the second through hole, and the seventh through hole. The second limiting rod sequentially passes through the fourth through hole and the sixth through hole. The third limiting rod sequentially passes through the fifth through hole and the eighth through hole.

2. The hinge mechanism of a flexible screen according to claim 1, characterized in that: The rotating shaft chain belt also includes a rotating shaft chain belt connecting piece arranged at the left and right ends of the rotating shaft chain belt, one end of the rotating shaft chain belt connecting piece is fixedly connected to the connecting shaft, and a gear is arranged at the end of the rotating shaft chain belt connecting piece away from the connecting shaft, and the rotating shaft chain belt connecting piece is meshed with the third rotating shaft gear piece through the gear.

3. The hinge mechanism of a flexible screen according to claim 1, characterized in that: The first gear is semi-cylindrical.

4. The hinge mechanism of a flexible screen according to claim 1, characterized in that: The second gear is semi-cylindrical, and the second shaft gear member can be inserted into the first shaft gear member after the second gear and the first groove cooperate with each other. After the second shaft gear member is inserted into the first shaft gear member, the extension line of the cylindrical center line of the second through hole coincides with the extension line of the cylindrical center line of the first through hole.

5. The hinge mechanism of a flexible screen according to claim 2, characterized in that: A nut is provided at one end of the rotating shaft chain connecting piece, and a third gear is provided at the end of the rotating shaft chain connecting piece away from the nut. The third gear is semi-cylindrical, and a circular third through hole is provided at the center of the third gear. The rotating shaft chain connecting piece can be inserted into the first rotating shaft gear piece after the third gear and the first groove cooperate with each other, and after the rotating shaft chain connecting piece is inserted into the first rotating shaft gear piece, the extension line of the cylindrical center line of the third through hole coincides with the extension line of the cylindrical center line of the first through hole.

6. The hinge mechanism of a flexible screen according to claim 1, characterized in that: The fourth gear is semi-cylindrical.

7. The hinge mechanism of a flexible screen according to claim 1, characterized in that: The fifth gear is semi-cylindrical.

8. The hinge mechanism of a flexible screen according to claim 1, characterized in that: A fourth groove is arranged between two adjacent front and rear fourth gears, a fifth groove is arranged between two adjacent front and rear second gears, the first connecting member is arranged in the space where the fourth groove and the fifth groove are combined, the first lock buckle and the second lock buckle are both cylindrical structures, and after the first lock buckle is snapped into the fourth groove, the extension line of the cylindrical center line of the sixth through hole and the extension line of the cylindrical center line of the fourth through hole coincide with each other, and after the second lock buckle is snapped into the fifth groove, the extension line of the cylindrical center line of the seventh through hole and the extension line of the cylindrical center line of the second through hole coincide with each other.

9. The hinge mechanism of a flexible screen according to claim 1, characterized in that: A sixth groove is arranged between the two adjacent front and rear fifth gears, the second connecting piece is arranged on the sixth groove, the first locking ring and the second locking ring are both semi-cylindrical, and after the second connecting piece is inserted into the sixth groove, the extension line of the cylindrical center line of the eighth through hole and the extension line of the cylindrical center line of the fifth through hole coincide with each other, and after the second connecting piece is inserted into the sixth groove, the extension line of the cylindrical center line of the ninth through hole and the extension line of the cylindrical center line of the first through hole coincide with each other.

10. The hinge mechanism of a flexible screen according to claim 1, characterized in that: The rotating shaft chain belt also includes a fourth limiting rod, and the fourth limiting rod passes through the third through hole and the seventh through hole in sequence.

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