Flexible screen bending hinge with synchronous length units

Abstract

The utility model discloses a flexible screen bending hinge with synchronous length units, which comprises a base and side edge movable blocks on two sides of the base, a track control movable block and a length control movable block which are linked are arranged between the base and the side edge movable blocks, the length control movable block is linked with a synchronization unit, and the synchronization unit is arranged on the base; the track control movable block and the base are in sliding fit through a first arc groove and a first arc shaft to achieve rotating connection. The length control movable block and the side edge movable block are rotationally connected through sliding fit between a second arc groove and a second arc shaft; an end face movable frame is arranged on one side of the base, the end face movable frame and the track control movable block are rotationally connected through sliding fit of a fourth arc groove and a fourth arc shaft, a protruding block is arranged on the fourth arc shaft, and a groove is formed in the fourth arc groove. The protruding block and the groove are matched in a concave-convex mode to achieve clamping point self-locking at different angles in the rotating process.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible screen electronic terminal design, in particular to a flexible screen folding mobile phone design technology, and specifically to a flexible screen bending hinge with synchronized length units. Background Art

[0002] Compared to traditional backlight screens (LCDs), flexible screens (OLEDs) are self-luminous, achieving excellent image quality, natural color rendering, and eliminating the harmful effects of blue light. They are also flexible, bendable, and foldable. They are also lightweight, heat-free, and comfortable to the touch, enabling the creation of a variety of screen forms, including flexible, curved, and foldable, meeting the evolving needs of mobile phones. In the future, flexible screens will see widespread adoption as personal smart devices continue to penetrate the market. They can also be used in a variety of flexible screen electronic terminal products, such as tablets, monitors, and smart wearable devices.

[0003] Flexible screens are typically composed of multiple layers of polymer materials and OCA optical adhesive. A complete flexible display screen composed of these multiple layers forms multiple neutral layers within its stacked structure. Due to the multi-layered structure, the different layers of a flexible display screen experience variations in elasticity, resulting in an irregular bending trajectory. When used in foldable phones, flexible screens must exhibit excellent plasticity and ductility. The key challenges lie in whether the screen remains crease-free and undamaged after repeated stretching and compression, and whether the circuit boards and components within the phone can withstand folding and bending. Furthermore, the entire foldable phone's screen's bending area is connected to the midframe or housing with a precision hinge to achieve both bending and support. Furthermore, the hinge must be durable and reliable, capable of withstanding 200,000 folds without error. The angle of contact between the hinge and the screen is a key technical challenge for foldable phones, and low processing yield and high costs also urgently need to be addressed.

[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] At present, electronic terminals using flexible screens require effective space saving, mainly to improve user experience and make them light and thin for easy use. This puts higher requirements on the hinges that achieve bending and rotation. Utility Model Content

[0006] The purpose of the present utility model is to overcome the deficiencies in the prior art and provide a flexible screen bending hinge with synchronized length units.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] The flexible screen bending hinge with synchronized length unit includes a base and side movable blocks on both sides of the base, wherein a track control movable block and a length control movable block are provided between the base and the side movable blocks, and the length control movable block is linked with a synchronization unit, and the synchronization unit is provided on the base;

[0009] The trajectory control movable block and the base are rotatably connected by slidingly engaging with a first arc groove and a first arc shaft;

[0010] The track control movable block and the side movable block are linked by sliding through the inclined sliding groove and the inclined sliding block;

[0011] The length control movable block and the side movable block are rotatably connected by slidingly engaging with the second arc groove and the second arc shaft;

[0012] The length control movable block and the base are rotatably connected by slidingly engaging with a third arc groove and a third arc shaft;

[0013] An end face movable frame is provided on one side of the base, and the end face movable frame and the trajectory control movable block are rotatably connected by sliding cooperation between the fourth arc groove and the fourth arc shaft. A protrusion is provided on the fourth arc shaft, and a groove is provided in the fourth arc groove. The protrusion and the groove realize self-locking at different angles during rotation through concave-convex cooperation.

[0014] In particular, the synchronization unit includes a rack and a gear meshing therewith to achieve synchronization, a rivet shaft is provided between the gear and the base to achieve connection and positioning, a slot is provided on the rack, and a clamping shaft is provided on the length control movable block, and the clamping shaft cooperates with the slot to achieve linkage.

[0015] Particularly, the synchronization unit comprises a threaded movable block, a spiral groove is provided on the threaded movable block, and a spiral pattern is provided at the bottom of the length control movable block, and the spiral pattern slides in the spiral groove to achieve synchronization.

[0016] Particularly, the end surface movable frame is provided with a plurality of connecting shafts, the connecting shafts are provided with springs for providing elastic force, and one end of the connecting shaft is in contact with the base to achieve positioning.

[0017] The beneficial effects of the present invention are: the flexible screen bending hinge with synchronized length units provided by the present invention integrates the self-locking design of the card points and the rotating components, and all spare parts including the synchronization mechanism are integrated on the base. The synchronization unit is directly linked with the length control movable block, and different synchronization modes can be selected for use, effectively saving space. The two sides of the base no longer have an outward-extending rotating arm design, and the structural composition is simple and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a diagram of the hinge gear rack synchronization structure in the embodiment of this patent.

[0019] Figure 2 This is a diagram of the hinge thread synchronization structure in the embodiment of this patent.

[0020] Figure 3 This is a structural diagram of the hinge thread and leaf spring in the embodiment of this patent.

[0021] Figure 4 This is a structural diagram of the hinge compression spring and rack gear in the embodiment of this patent.

[0022] Figure 5 This is a structural diagram of the hinge compression spring and thread combination in the embodiment of this patent.

[0023] Figure 6 It is the structural decomposition in the embodiment of this patent Figure 1 .

[0024] Figure 7 It is the structural decomposition in the embodiment of this patent Figure 2 .

[0025] Figure 8 It is the structural decomposition in the embodiment of this patent Figure 3 .

[0026] Figure 9 It is the structural decomposition in the embodiment of this patent Figure 4 .

[0027] Figure 10 It is the structural decomposition in the embodiment of this patent Figure 5 .

[0028] Figure 11 、 Figure 12 、 Figure 13 and Figure 14 This is a diagram of the base structure in the embodiment of this patent.

[0029] Figure 15 and Figure 16 This is a structural diagram of the side movable block in the embodiment of this patent.

[0030] Figure 17 、 Figure 18and Figure 19 This is a structural diagram of the trajectory control activity block in the embodiment of this patent.

[0031] Figure 20 This is the structural diagram of the threaded movable block.

[0032] Figure 21 and Figure 22 This is a structural diagram of the length control activity block in the embodiment of this patent.

[0033] Figure 23 This is another structural diagram of the threaded movable block of this patent.

[0034] Figure 24 and Figure 25 This is a structural diagram of the end face movable frame in the embodiment of this patent.

[0035] Figure 26 This is a diagram of the rack structure in the embodiment of this patent. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings:

[0037] Example 1:

[0038] like Figure 1-24 As shown, the flexible screen bending hinge with synchronized length units provided in this embodiment includes a base 1 and side movable blocks 2 on both sides of the base 1, and a trajectory control movable block 3 and a length control movable block 4 are provided between the base 1 and the side movable block 2. The length control movable block 4 is linked with a synchronization unit 5, and the synchronization unit 5 is provided on the base 1; the trajectory control movable block 3 and the base 1 are rotated by sliding with the first arc groove 101 and the first arc shaft 102; the trajectory control movable block 3 and the side movable block 2 are linked by sliding with the inclined slide groove 201 and the inclined slide block 202; the length control movable block 4 and the side movable The blocks 2 are rotationally connected by sliding cooperation between the second arc groove 103 and the second arc shaft 104; the length control movable block 4 and the base 1 are rotationally connected by sliding cooperation between the third arc groove 105 and the third arc shaft 106; an end face movable frame 6 is provided on one side of the base 1, and the end face movable frame 6 and the trajectory control movable block 3 are rotationally connected by sliding cooperation between the fourth arc groove 107 and the fourth arc shaft 108. A protrusion 109 is provided on the fourth arc shaft 108, and a groove 110 is provided in the fourth arc groove 107. The protrusion 109 and the groove 110 are self-locking at different angles during the rotation process through concave-convex cooperation.

[0039] The synchronization unit 5 includes a rack 7 and a gear 8 meshing therewith to achieve synchronization. A rivet shaft 9 is provided between the gear 8 and the base 1 to achieve connection and positioning. The rack 7 is provided with a slot 71, and the length control movable block 4 is provided with a clamping shaft 72. The clamping shaft 72 cooperates with the slot 71 to achieve linkage. When the above-mentioned synchronization unit structure is selected, the transmission methods of the force received or received are mainly as follows:

[0040] (1) A spring is used to provide force. The end movable frame 6 is provided with multiple sets of connecting shafts 61. The connecting shafts 61 are provided with springs 62 that provide elastic force. One end of the connecting shaft 61 is in contact with the base 1 to achieve positioning.

[0041] (2) A compression spring is used to provide force. The end movable frame 6 is provided with multiple sets of connecting shafts 61. The connecting shafts 61 are provided with compression springs 63 for providing pressure. One end of the connecting shaft 63 is in contact with the base 1 to achieve positioning.

[0042] Example 2:

[0043] like Figure 1-24 As shown, the flexible screen bending hinge with synchronized length units provided in this embodiment includes a base 1 and side movable blocks 2 on both sides of the base 1, and a trajectory control movable block 3 and a length control movable block 4 are provided between the base 1 and the side movable block 2. The length control movable block 4 is linked with a synchronization unit 5, and the synchronization unit 5 is provided on the base 1; the trajectory control movable block 3 and the base 1 are rotated by sliding with the first arc groove 101 and the first arc shaft 102; the trajectory control movable block 3 and the side movable block 2 are linked by sliding with the inclined slide groove 201 and the inclined slide block 202; the length control movable block 4 and the side movable The blocks 2 are rotationally connected by sliding cooperation between the second arc groove 103 and the second arc shaft 104; the length control movable block 4 and the base 1 are rotationally connected by sliding cooperation between the third arc groove 105 and the third arc shaft 106; an end face movable frame 6 is provided on one side of the base 1, and the end face movable frame 6 and the trajectory control movable block 3 are rotationally connected by sliding cooperation between the fourth arc groove 107 and the fourth arc shaft 108. A protrusion 109 is provided on the fourth arc shaft 108, and a groove 110 is provided in the fourth arc groove 107. The protrusion 109 and the groove 110 are self-locking at different angles during the rotation process through concave-convex cooperation.

[0044] The synchronization unit includes a threaded movable block 10 , on which a spiral groove 111 is provided. The bottom of the length control movable block 4 is provided with a spiral pattern 112 , and the spiral pattern 112 slides in the spiral groove 111 to achieve synchronization.

[0045] When the above-mentioned synchronization unit structure is selected, the transmission methods of the force or receiving force are mainly as follows:

[0046] (1) A spring is used to provide force. The end movable frame 6 is provided with multiple sets of connecting shafts 61. The connecting shafts 61 are provided with springs 62 that provide elastic force. One end of the connecting shaft 61 is in contact with the base 1 to achieve positioning.

[0047] (2) A compression spring is used to provide force. The end movable frame 6 is provided with multiple sets of connecting shafts 61. The connecting shafts 61 are provided with compression springs 63 for providing pressure. One end of the connecting shaft 63 is in contact with the base 1 to achieve positioning.

[0048] (3) The leaf spring 64 is directly used to provide force. At least one set of leaf springs 64 is directly set between the end movable frame 6 and the base 1 to provide elastic force.

[0049] 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 engineering technicians in this field to the structure, features and principles described in the present invention should fall within the scope of protection of the patent application for the present invention.

Claims

1. A flexible screen bending hinge with synchronized length units, characterized in that: It includes a base and side movable blocks on both sides of the base, wherein a trajectory control movable block and a length control movable block are provided between the base and the side movable blocks, and a synchronization unit is provided in linkage with the length control movable block, and the synchronization unit is provided on the base; The trajectory control movable block and the base are rotatably connected by slidingly cooperating with the first arc groove and the first arc shaft; The track control movable block and the side movable block are linked by sliding through the inclined sliding groove and the inclined sliding block; The length control movable block and the side movable block are rotatably connected by slidingly matching the second arc groove and the second arc shaft; The length control movable block and the base are rotatably connected by slidingly cooperating with the third arc groove and the third arc shaft; An end face movable frame is provided on one side of the base, and a rotational connection is achieved between the end face movable frame and the trajectory control movable block through sliding cooperation between a fourth arc groove and a fourth arc shaft. A protrusion is provided on the fourth arc shaft, and a groove is provided in the fourth arc groove. The protrusion and the groove achieve self-locking at different angles during rotation through concave-convex cooperation.

2. The flexible screen bending hinge with synchronized length units according to claim 1, characterized in that: The synchronization unit includes a rack and a gear meshing therewith to achieve synchronization. A rivet shaft is provided between the gear and the base to achieve connection and positioning. A slot is provided on the rack, and a clamping shaft is provided on the length control movable block. The clamping shaft cooperates with the slot to achieve linkage.

3. The flexible screen bending hinge with synchronized length units according to claim 1, characterized in that: The synchronization unit comprises a threaded movable block, a spiral groove is arranged on the threaded movable block, a spiral pattern is arranged at the bottom of the length control movable block, and the spiral pattern slides in the spiral groove to achieve synchronization.

4. The flexible screen bending hinge with synchronized length units according to claim 1, characterized in that: The end surface movable frame is provided with a plurality of connection shafts, the connection shafts are provided with springs providing elastic force, and one end of the connection shaft is in contact with the base to achieve positioning.

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