Crease-free bending hinge for flexible screen folding phones

Abstract

The crease-free bending hinge of the flexible screen folding mobile phone disclosed in the present invention comprises a base, on which is provided a rotating unit which is symmetrically distributed and can realize synchronous rotation within the range of 0 degrees to 180 degrees, and the rotating unit comprises a main control movable block, a sub-control movable block and a cam connecting plate which are symmetrically distributed on both sides of the base and linked with the base; the main control movable block and the sub-control movable block are linked to control the length of the rotation track, and the main control movable block and the cam connecting plate form a double-track linked morphological control mechanism; the cam connecting plate is linked with the main control movable block, a strip hole and a sliding shaft are arranged on the cam connecting plate, the main control movable block is arranged with a curved groove and an axis hole, a sliding shaft is arranged in the axis hole to slide with the strip hole, and the sliding shaft slides in the curved groove to realize double-track rotation.

Description

Technical Field

[0001] The present invention relates to the technical field of telephone design, and in particular to a flexible screen folding mobile phone design technology, and specifically to a crease-free bending hinge of the flexible screen folding mobile phone. Background Art

[0002] Compared with traditional backlight screens (LCD), flexible screens (OLED) can emit light by themselves, which can achieve excellent image quality, natural color rendering and no blue light hazards; the screen can be used flexibly, can be bent and folded; it is flexible, thin, heat-free and comfortable to the touch, and can create a variety of screen forms such as flexible screens, curved screens, and folding screens, which meet the development needs of mobile phones. In the future, flexible screens will be widely used with the continuous penetration of personal smart terminals, and can also be used in a variety of flexible screen electronic terminal products, such as tablets, displays and smart wearable devices.

[0003] Flexible screens are generally composed of multiple layers of polymer materials and OCA optical glue. The complete flexible display screen composed of multiple layers of display materials has multiple neutral layers on its stacking structure. Due to the relationship between the multiple layers, the different layers of the flexible display screen will have elastic changes and other factors. Its bending trajectory must be irregular. When the flexible screen is used on a folding screen mobile phone, it needs to have good plasticity and ductility. The test lies in: whether the screen can still remain without creases and damage after repeated stretching and compression; whether the circuit boards and components inside the mobile phone can withstand folding and bending, etc.; secondly, the bending area of ​​the entire screen of the foldable mobile phone is connected to the middle frame or shell with a precise hinge to achieve the bending and support of the screen; at the same time, the hinge must be durable and reliable enough to withstand 200,000 folds without error. The fitting angle between the hinge and the screen is one of the technical difficulties of foldable mobile phones, and the problems of low processing yield and high cost also need to be solved urgently.

[0004] To meet the above functions, precise microstructure hinges are needed. The current hinges can basically achieve simple functions of damping torque and synchronization. They cannot completely solve the problem of eliminating creases and ensuring service life, and cannot meet the high precision and cost requirements of industrial manufacturing.

[0005] One of the mainstream forms of the inward folding method used in existing folding mobile phones with flexible screens is to achieve a water drop shape in the bending area after bending. In addition to the standard water drop shape, there is also a differentiated water drop shape that is different from the standard shape. Simply put, it is a new water drop shape that combines the traditional U-shape with the water drop. Summary of the invention

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a crease-free bending hinge for a flexible screen folding mobile phone.

[0007] To achieve the above object, the present invention adopts the following technical solution:

[0008] A crease-free bending hinge for a flexible screen folding mobile phone comprises a base, on which a rotating unit is symmetrically distributed and realizes synchronous rotation within a range of 0-180 degrees, and the rotating unit comprises a main control movable block, a secondary control movable block and a cam connecting plate symmetrically distributed on both sides of the base and linked with the base; the main control movable block and the secondary control movable block are linked to control the length of the rotation track, and the main control movable block and the cam connecting plate form a double-track linkage shape control mechanism;

[0009] The base is linked with the cam connecting plate: the base is provided with a mounting position of the cam connecting plate, which is connected with the cam connecting plate, and an independent connecting movable block is provided on the base to be linked with the cam connecting plate;

[0010] The cam connecting plate is linked with the main control movable block: a strip hole and a symmetrical double-headed sliding shaft are arranged on the cam connecting plate, a curved groove and a shaft hole are arranged on the main control movable block, a sliding shaft is arranged in the shaft hole to slide with the strip hole, and the sliding shaft slides in the hyperbolic groove;

[0011] The auxiliary control movable block is linked with the active control movable block: an arc groove is provided on the auxiliary control movable block, and an arc block is provided on the main control movable block, and the arc groove and the arc block are slidably matched;

[0012] The auxiliary control movable block is linked with the base: a sliding column is provided on the end face of one side of the short side of the base, and an arc slide groove is provided on one side of the bottom of the auxiliary control movable block. The sliding column and the arc slide groove are slidably matched, and a linked intermediate movable block is provided between the base and the auxiliary control movable block.

[0013] In one of the preferred solutions, a second sliding shaft is provided on the engaging movable block, a sliding slot hole is provided on the cam connecting plate, and the second sliding shaft slides in the sliding slot hole to achieve synchronization.

[0014] One of the preferred schemes is that the base is provided with symmetrically distributed connecting shafts, the connecting shafts are connected to the cam connecting plate in a through-type combination, and the connecting shaft is provided with a cam connecting plate, the cam connecting plate and the cam concave-convex cam on the cam connecting plate cooperate to achieve self-locking of the card points at 0 degrees and 180 degrees, and the connecting shaft is provided with a spring for realizing elastic force and torque control.

[0015] One of the preferred schemes is that the rotating unit is a water droplet-shaped structure with double-track main shaft linkage, which realizes the length control of the trajectory through translational extrapolation and realizes the shape control in combination with double-track sliding cooperation. That is, in the bending and rotating process, the front section of the trajectory changes into a U-shaped mimicry and transitions to a water droplet-shaped mimicry in the rear section to complete the rotation control.

[0016] One of the preferred solutions is that the water droplet-like morphological structure realizes stroke constraint by combining the groove shape change of the arc groove with the groove shape change of the curved groove, and the stroke constraint is a comprehensive display of length and shape.

[0017] The beneficial effects of the present invention are as follows: the crease-free bending hinge of the flexible screen folding mobile phone provided by the present invention realizes synchronous bending in the range of 0-180 degrees through a double-track main shaft, the main control movable block cooperates with the shaft pin and the slide groove hole through the hole, the double semi-circular arc shaft slides with the double circular arc groove, and the double shaft moves along the double slide groove track to realize 0-180 degree synchronous rotation, the hole of the auxiliary control movable block is connected with the shaft pin and the movable block, the shaft rotates along the circular arc slide groove track, the double circular arc slide grooves at both ends rotate with the double circular arc slider to realize 0-180 rotation, the cam movable block moves along the strip hole track through the sliding shaft, and the double shafts on both sides slide along the slide groove track to realize 0-180 degree synchronous rotation, and the rotating mechanism as a whole realizes a new type of water drop shape bending track with double-track linkage, which ensures the service life while effectively eliminating the creases and wrinkles in the bending area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the hinge structure in the embodiment of this patent.

[0019] Figure 2 This is one of the overall views of the hinge structure in the embodiment of this patent.

[0020] Figure 3 This is the second overall diagram of the hinge structure in the embodiment of this patent.

[0021] Figure 4 This is an overall exploded view of the hinge structure in the embodiment of this patent.

[0022] Figure 5 This is a partial exploded view of the hinge structure in the embodiment of this patent.

[0023] Figure 6 This is one of the component diagrams of the hinge structure in the embodiment of this patent.

[0024] Figure 7 This is the second diagram of the hinge structure component in the embodiment of this patent.

[0025] Figure 8 This is the third diagram of the hinge structure component part in the embodiment of this patent.

[0026] Fig. 9 This is the fourth diagram of the hinge structure component part in the embodiment of this patent.

[0027] Fig.10 It is one of the partial replacement implementation schemes of the hinge in the embodiment of this patent.

[0028] Fig.11This is the second implementation scheme of partial replacement of the hinge in the embodiment of this patent.

[0029] Fig.12 This is the third implementation scheme of partial replacement of the hinge in the embodiment of this patent.

[0030] Fig.13 This is the fourth implementation scheme of partial replacement of the hinge in the embodiments of this patent.

[0031] Fig.14 This is the fifth implementation scheme of partial replacement of the hinge in the embodiments of this patent.

[0032] Fig.15 This is the sixth implementation scheme of partial replacement of the hinge in the embodiments of this patent.

[0033] Fig.16 This is the seventh implementation scheme of partial replacement of hinge in the embodiments of this patent.

[0034] Fig.17 This is the eighth implementation scheme of partial replacement of hinge in the embodiments of this patent.

[0035] Fig.18 This is the ninth implementation scheme of partial replacement of hinge in the embodiments of this patent.

[0036] Fig.19 This is the tenth implementation scheme of partial replacement of hinge in the embodiments of this patent.

[0037] Fig. 20 This is the eleventh implementation scheme of the partial replacement of the hinge in the embodiments of this patent.

[0038] Fig.21 This is a schematic diagram of the traditional water drop shape.

[0039] Fig. 22 It is a schematic diagram of the traditional U-shaped form.

[0040] Fig.23 This is a schematic diagram showing the form of this patent. DETAILED DESCRIPTION

[0041] The present invention will be further described below in conjunction with the accompanying drawings:

[0042] Embodiment 1:

[0043] like Figure 1-9As shown, the crease-free bending hinge of the flexible screen folding mobile phone provided in this embodiment includes a base 1, and the base 1 is provided with a rotating unit that is symmetrically distributed and realizes synchronous rotation within the range of 0 degrees to 180 degrees. The rotating unit includes a main control movable block 2, a sub-control movable block 3 and a cam connecting plate 4 that are symmetrically distributed on both sides of the base 1 and linked to the base 1; the main control movable block 2 and the sub-control movable block 3 are linked to control the length of the rotation trajectory, and the main control movable block 2 and the cam connecting plate 4 form a double-track linkage shape control mechanism; a connecting seat 5 is provided on the base 1 and is installed and connected with the cam connecting plate 4, and an independent The clamping movable block 6 is linked with the cam connecting plate 4; the cam connecting plate 4 is provided with a strip hole 41 and a symmetrical double-headed sliding shaft 42; the main control movable block 2 is provided with a hyperbolic groove 21 and an axis hole 22; a sliding shaft 23 is provided in the axis hole 22 to slide with the strip hole 41; the double-headed sliding shaft 42 slides in the hyperbolic groove 21; the auxiliary control movable block 3 is provided with a double arc groove 31; the main control movable block 2 is provided with a double arc block 24; the double arc groove 31 slides with the double arc block 24; a sliding column 7 is provided on the end face of one side of the short side of the base 1; an arc slide groove 25 is provided on one side of the bottom of the auxiliary control movable block 3; the sliding column 7 slides with the arc slide groove 25. The clamping movable block 6 is provided with a second sliding shaft 61 and a rotating shaft 62; the cam connecting plate 4 is provided with a slide groove hole 43 and a rotating hole 44; the second sliding shaft 61 slides in the slide groove hole 43 to achieve synchronization. The base 1 is provided with symmetrically distributed connecting shafts 8, which are connected to the cam connecting plate 4 in a through-type combination, and the connecting shaft 8 is provided with a cam connecting plate 9. The cam connecting plate 9 cooperates with the cam concave-convex cam on the cam connecting plate 4 to achieve self-locking of the card points at the 0 degree and 180 degree positions, and the connecting shaft 8 is provided with a spring 10 for realizing elastic force and torque control.

[0044] like Figure 5 As shown, a pin hole 301 is set at the lower part of the auxiliary control movable block 3, an intermediate movable block 12 is set on the base 1, and a pin shaft 13 is set to pass through the intermediate movable block 12 and connect with the pin hole 301 to realize the linkage cooperation between the base 1 and the auxiliary control movable block 3, and a slider 121 is set on the intermediate movable block 12 to be slidably connected with the slide groove 111 set on the base 1 to realize the linkage.

[0045] In the above embodiment, the linkage of the main control movable block 2, the cam connecting plate 4 and the base 1 is a structural composition of a constant orientation setting, and the variable part lies in the connection and matching relationship between the auxiliary control movable block 3 and the base 1. The following scheme is given in combination with the specific implementation of the above embodiment:

[0046] Solution 1: If Fig.10As shown, the intermediate movable block 12 is provided with an arc groove 502, and the auxiliary control movable block 3 is provided with an arc block 501, so as to realize the linkage cooperation between the base 1 and the auxiliary control movable block 3, and the slider 121 is provided on the intermediate movable block 12 and is slidably connected with the slide groove 111 provided on the base 1 to realize the linkage.

[0047] Solution 2: If Fig.11 As shown, the intermediate movable block 12 is provided with an arc groove 502, and the auxiliary control movable block 3 is provided with an arc block 501, so as to realize the linkage cooperation between the base 1 and the auxiliary control movable block 3, and the inclined sliding block 503 is provided on the intermediate movable block 12 and is slidably connected with the inclined sliding groove 504 provided on the base 1 to realize the linkage.

[0048] Solution 3: If Fig.12 As shown, an intermediate movable block 12 is provided on the base 1, and a pin shaft 13 is provided to pass through the intermediate movable block 12 and connect with the pin hole 301, so as to realize the linkage cooperation between the base 1 and the auxiliary control movable block 3, and an inclined sliding block 503 is provided on the intermediate movable block 12 and is slidably connected with an inclined sliding groove 504 provided on the base 1 to realize the linkage.

[0049] Solution 4: If Fig.13 As shown, the intermediate movable block 12 is linked with the auxiliary control movable block 3 through the hole 611 and the column 612, and the circular arc block 602 provided on the base 1 is slidably matched with the circular arc groove 601 provided on the intermediate movable block 12 to achieve linkage.

[0050] Solution 5: If Fig.14 As shown, the intermediate movable block 12 is provided with an arc groove 702 which is slidably matched with the arc block 701 provided with the auxiliary control movable block 3, and the intermediate movable block 12 is provided with a hole 703 which is rotationally matched with the column 704 of the base 1 to realize linkage.

[0051] Option 6: If Fig.15 As shown, the hole 711 of the intermediate movable block 12 is connected with the hole 715 of the auxiliary control movable block 3 through the shaft 713, and the hole 712 of the intermediate movable block 12 is rotatably matched with the column 714 of the base 1 to achieve linkage.

[0052] Solution 7: If Fig.16 As shown, the intermediate movable block 12 is provided with an arc groove 721 which is slidably matched with the arc block 725 provided with the auxiliary control movable block 3, and the intermediate movable block 12 is provided with a hole 722 which is rotationally matched with the hole 724 of the base 1 to realize linkage.

[0053] Solution 8: If Fig.17 As shown, this solution does not set an intermediate movable block, and directly sets sliding columns and arc sliding grooves that slide with each other on the auxiliary control movable block 3 and the base 1, specifically: the sliding column 733 slides with the sliding groove 732, and the sliding column 731 slides with the sliding groove 734.

[0054] Solution 9: If Fig.18 As shown, the middle movable block 12 is provided with a straight sliding groove 744 and an arc groove 743, the base 1 is provided with an arc block 745 and an arc groove 746, the auxiliary control movable block 3 is provided with a sliding column 742 and a straight sliding block 741, the straight sliding groove 744 and the straight sliding block 741 are slidably matched, the arc groove 743 and the arc block 745 are slidably matched, and the arc groove 746 and the sliding column 742 are matched to realize linkage.

[0055] Solution 10: Fig.19 As shown, this solution does not set an intermediate movable block, and directly sets a double arc slide groove 752 on the auxiliary control movable block 3, and a double arc slider 751 is set on the base 1. The double arc slide groove 752 and the double arc slider 751 slide together to achieve linkage.

[0056] Solution 11: Fig. 20 As shown, a circle is provided to link the base 1 and the auxiliary control movable block 3. The circle is composed of a circle 762, an axle seat 764 and an axle 765. The axle 765 cooperates with the hole 761 on the auxiliary control movable block 3, and the axle 765 passes through the circle 762 and cooperates with the axle seat 764 and links with the base 1.

[0057] In this embodiment, the rotation trajectory of the hinge effectively combines the advantages of the traditional water drop and the traditional U-shaped trajectory. Fig.21 As shown, the traditional U-shaped trajectory is Fig. 22 As shown, the patent trajectory is as follows Fig.23 It has evolved into a new type of water droplet shape described in this embodiment. The rotation unit is a water droplet-like structure with dual-track main shaft linkage. The length control of the track is achieved through translational extrapolation, and the shape control is achieved by combining the double-track sliding cooperation. That is, during the bending and rotation process, the front part of the track changes to a water droplet-like mimicry in the U-shaped mimicry and then completes the rotation control. The water droplet-like structure realizes the stroke constraint by combining the groove shape change of the arc groove with the groove shape change of the curved groove. The stroke constraint is the comprehensive display of length and shape.

[0058] This embodiment is different from the conventional technology in that:

[0059] The double-track main shaft is used to achieve synchronous bending in the range of 0-180 degrees. The main control movable block cooperates with the shaft pin and the slide groove hole through the hole. The double semi-circular arc shaft slides with the double arc groove, and the double shaft moves along the double slide groove track to achieve 0-180 degree synchronous rotation. The hole of the auxiliary control movable block is connected with the shaft pin and the movable block. The shaft rotates along the arc slide groove track. The double arc slide grooves at both ends rotate with the double arc slider to achieve 0-180 rotation. The cam movable block moves along the strip hole track through the sliding shaft, and the double shafts on both sides slide along the slide groove track to achieve 0-180 degree synchronous rotation. The rotating mechanism as a whole realizes a new type of water drop shape bending track with double track linkage.

[0060] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Therefore, without departing from the design spirit of the present invention, the equivalent changes or decorations made by ordinary engineers and technicians in this field to the structure, features and principles described in the present invention should fall within the protection scope of the patent application of the present invention.

Claims

1. A crease-free bending hinge for a flexible screen folding mobile phone, characterized in that: It comprises a base, on which a rotating unit is symmetrically distributed and realizes synchronous rotation within a range of 0 degrees to 180 degrees, and the rotating unit comprises a main control movable block, a sub-control movable block and a cam connecting plate symmetrically distributed on both sides of the base and linked with the base; the main control movable block and the sub-control movable block are linked to control the length of the rotating track, and the main control movable block and the cam connecting plate form a double-track linkage shape control mechanism; The base is provided with a connecting seat which is installed and connected with the cam connecting plate, and an independent clamping movable block is provided on the base to be linked with the cam connecting plate; a strip hole and a symmetrical double-headed sliding shaft are provided on the cam connecting plate, a hyperbolic groove and an axis hole are provided on the main control movable block, a sliding shaft is provided in the axis hole to slide and cooperate with the strip hole, and the double-headed sliding shaft slides in the hyperbolic groove; a double arc groove is provided on the auxiliary control movable block, and a double arc block is provided on the main control movable block, and the double arc groove slides with the double arc block; a sliding column is provided on the end face of one side of the short side of the base, and an arc slide groove is provided on one side of the bottom of the auxiliary control movable block, and the sliding column slides with the arc slide groove; a second sliding shaft and a rotating shaft are provided on the clamping movable block, a slide groove hole and a rotating hole are provided on the cam connecting plate, and the second sliding shaft slides in the slide groove hole to achieve synchronization, a pin hole is provided at the lower part of the auxiliary control movable block, an intermediate movable block is provided on the base, and a pin shaft is provided to pass through the intermediate movable block and connect with the pin hole to realize the linkage cooperation between the base and the auxiliary control movable block, and a slider is provided on the intermediate movable block to slide and connect with the slide groove provided on the base to realize linkage; The base is provided with symmetrically distributed connecting shafts, which are connected to the cam connecting plate in a through-type combination, and the connecting shaft is provided with a cam connecting plate. The cam connecting plate and the cam concave-convex cam on the cam connecting plate cooperate to achieve self-locking of the card points at the 0 degree and 180 degree positions, and the connecting shaft is provided with a spring for realizing elastic force and torque control.

2. The crease-free bending hinge for a flexible screen folding mobile phone according to claim 1, characterized in that: The base is linked with the cam connecting plate, and an independent synchronous movable block is arranged on the base to be linked with the cam connecting plate.

3. The crease-free bending hinge for a flexible screen folding mobile phone according to claim 1, characterized in that: The auxiliary control movable block is linked with the base, a sliding column is provided on the end face of one side of the short side of the base, an arc slide groove is provided on one side of the bottom of the auxiliary control movable block, the sliding column and the arc slide groove are slidably matched, and a linked intermediate movable block is provided between the base and the auxiliary control movable block.

4. The crease-free bending hinge for a flexible screen folding mobile phone according to claim 2, characterized in that: The synchronous movable block is provided with a second sliding shaft, the cam connecting plate is provided with a sliding slot hole, and the second sliding shaft slides in the sliding slot hole to achieve synchronization.

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