Motion type synchronous rotating mechanism applied to flexible screen

Abstract

The utility model discloses a motion type synchronous rotating mechanism applied to a flexible screen, which comprises a base and two groups of movable frames arranged on two sides of the base, a synchronous sliding block and a third connecting arm for realizing synchronization are further arranged between the base and the movable frames, the synchronous sliding block is arranged on the base, and the third connecting arm is arranged on the base. The third connecting arm is connected with the synchronous sliding block and the movable frame to achieve synchronous movement. The synchronous sliding block is provided with a first rotating hole, a rack and a transverse sliding block, the base is provided with a first insection and a transverse sliding groove, the third connecting arm is provided with a first sliding block, a first rotating column, a second insection and a third insection, and the movable frame is provided with a first sliding groove; the first rotating column is in rotating fit with the first rotating hole, the transverse sliding block slides in the transverse sliding groove, the rack is meshed with the third insection, and the first insection is meshed with the second insection. One section of the third connecting arm is connected with the movable frame, and the other end is connected with the base through a synchronous sliding block to realize synchronization.

Description

Technical Field

[0001] This utility model relates to the field of flexible screen application technology, and in particular to a flexible screen terminal design technology, specifically to a motion synchronous rotation mechanism for flexible screen applications. Background Technology

[0002] Compared to traditional backlit LCD screens, flexible OLED screens are self-illuminating, enabling them to achieve excellent image quality, natural color reproduction, and no harmful blue light. These screens are flexible, bendable, and foldable; they are also flexible, thin, do not generate heat, and are comfortable to hold, allowing for the creation of various screen forms such as flexible, curved, and foldable screens, meeting the needs of mobile phone development. In the future, flexible screens will be widely used with the increasing penetration of personal smart terminals and will also be used in various flexible screen electronic terminal products, such as tablets, monitors, and smart wearable devices.

[0003] Flexible screens are generally composed of multiple layers of polymer materials and OCA optical adhesive. A complete flexible display screen composed of multiple display materials forms multiple neutral layers in its stacked structure. Due to the multi-layer stacking relationship, different layers of the flexible display screen will experience elastic changes and other factors, and its movement trajectory will inevitably be irregular. When flexible screens are used in mobile phones, they need to have good plasticity and extensibility. The challenges are: after repeated stretching and compression, can the screen still remain without creases or damage? Can the circuit boards and components inside the mobile phone withstand folding and bending?

[0004] To achieve the folding function of flexible screens, the design of the connecting components for folding, namely the connecting shaft (hinge or pivot) at the bending point, is one of the biggest technical challenges. In addition, the problems of low processing yield and high cost also urgently need to be solved.

[0005] A rotating shaft is generally composed of a rotating mechanism, a synchronizing mechanism, and other auxiliary mechanisms. Traditional synchronizing mechanisms, whether using gear meshing, connecting rods, or other synchronizing methods, operate on the principle of fixed synchronous deployment. That is, the synchronizing mechanism itself only achieves synchronization on both sides through fixed meshing or transmission deployment, resulting in the synchronization accuracy of the entire synchronizing mechanism failing to meet high-precision requirements. Flexible screen application terminals may experience tensile deformation or excessive bending radius (rotation arc length) due to traditional fixed synchronization, leading to tensile damage to the screen. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a motion-synchronous rotation mechanism for flexible screen applications.

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

[0008] The motion-synchronous rotation mechanism for flexible screen applications includes a base and two sets of movable frames disposed on both sides of the base. A first connecting arm and a second connecting arm are provided between the base and the movable frames to achieve a rotatable connection.

[0009] A synchronization slider and a third connecting arm are provided between the base and the movable frame to achieve synchronization. The synchronization slider is set on the base, and the third connecting arm is connected to the synchronization slider and the movable frame respectively to achieve synchronized movement.

[0010] The synchronous slider is provided with a first rotating hole, a rack and a transverse slider, the base is provided with a first tooth and a transverse groove, the third connecting arm is provided with a first slider, a first rotating column, a second tooth and a third tooth, and the movable frame is provided with a first groove.

[0011] The first rotating column is rotatably engaged with the first rotating hole, the transverse slider slides within the transverse groove, the rack meshes with the third toothed groove, and the first toothed groove meshes with the second toothed groove.

[0012] Specifically, the first connecting arm is provided with a first curved groove and a second curved groove, the base is provided with a first arc-shaped block, and the movable frame is provided with a second arc-shaped block. The first arc-shaped block slides in the first curved groove, and the second arc-shaped block slides in the second curved groove.

[0013] Specifically, the movable frame is provided with a third curved groove, and a pin is provided in the third curved groove. The second connecting arm is provided with a pin hole. The pin and the pin hole cooperate to realize the connection between the movable frame and the second connecting arm. The base is provided with a third arc-shaped block, and the second connecting arm is provided with a fifth curved groove. The third arc-shaped block slides in the fifth curved groove.

[0014] An end-connecting block is provided on one side of the base. The end-connecting block is provided with a third curved groove. A third arc-shaped block is provided on the third connecting arm. The third arc-shaped block slides with the third curved groove. A locking groove is provided in the third curved groove. A protrusion is provided on the corresponding third arc-shaped block. The protrusion and the locking groove engage to achieve locking positioning.

[0015] Specifically, the outer side of the end connecting block is provided with a connecting shaft, and the connecting shaft is provided with a spring to realize damping and torque.

[0016] The beneficial effects of this utility model are as follows: The motion-synchronous rotation mechanism for flexible screen applications provided by this utility model features a synchronous slider on the base and a third connecting arm between the base and the movable frame. One end of the third connecting arm is connected to the movable frame, and the other end is connected to the base via the synchronous slider to achieve synchronization. Because the synchronous slider slides laterally with the base, it rotates with the third connecting arm. Furthermore, the third connecting arm, the base, and the synchronous slider are equipped with meshing racks and teeth. When the entire mechanism achieves synchronization during rotation, the third connecting arm reciprocates relative to the base, achieving high-precision synchronization through mutual constraint. During rotation, the entire mechanism presses the screen inward, reducing the large arc length of the rotational bending stroke, ensuring a longer bending length, reducing screen creases, and thus reducing damage to the screen. Attached Figure Description

[0017] Figure 1 and Figure 2 This is a schematic diagram of the overall structure in an embodiment of this patent.

[0018] Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This is a partial structural diagram of an embodiment of this patent.

[0019] Figure 8 and Figure 9 This is a schematic diagram of the base structure in an embodiment of this patent.

[0020] Figure 10 and Figure 11 All of these are exploded views of the overall structure in the embodiments of this patent. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Example 1:

[0023] like Figures 1-11As shown, the motion-synchronous rotation mechanism for the flexible screen application provided in this embodiment includes a base 1 and two sets of movable frames 2 disposed on both sides of the base 1. A first connecting arm 3 and a second connecting arm 4 are provided between the base 1 and the movable frames 2 to achieve rotational connection. A synchronization slider 5 and a third connecting arm 6 are also provided between the base 1 and the movable frames 2 to achieve synchronization. The synchronization slider 5 is disposed on the base 1, and the third connecting arm 6 is connected to the synchronization slider 5 and the movable frames 2 respectively to achieve motion synchronization. A first rotating... The base 1 has a hole 51, a rack 52, and a transverse slider 53. The base 1 has a first toothed groove 101 and a transverse sliding groove 102. The third connecting arm 6 has a first slider 61, a first rotating column 62, a second toothed groove 63, and a third toothed groove 64. The movable frame 2 has a first sliding groove 201. The first rotating column 62 is rotatably engaged with the first rotating hole 51. The transverse slider 53 slides in the transverse sliding groove 102. The rack 52 engages with the third toothed groove 64. The first toothed groove 101 engages with the second toothed groove 63.

[0024] The first connecting arm 3 is provided with a first curved groove 31 and a second curved groove 32, the base 1 is provided with a first arc block 103, and the movable frame 2 is provided with a second arc block 203. The first arc block 103 slides in the first curved groove 31, and the second arc block 203 slides in the second curved groove 32. The movable frame 2 is provided with a third curved groove 204, and a pin 2041 is provided in the third curved groove 204. The second connecting arm 4 is provided with a pin hole 41. The pin 2041 and the pin hole 41 cooperate to connect the movable frame 2 and the second connecting arm 4. A bushing 611 is provided on the pin 2041. An end connecting block 7 is provided on one side of the base 1. The end connecting block 7 is provided with a third arc-shaped block 71. The second connecting arm 4 is provided with a third arc groove 42. The third arc groove 42 and the third arc block 71 are in sliding cooperation. A locking groove 711 is provided in the third curved groove 42. A protrusion 421 is provided on the third arc block 71. The protrusion 421 and the locking groove 711 cooperate to achieve locking positioning. A connecting shaft 8 is provided on the outside of the end connecting block 7. A spring 9 is provided on the connecting shaft 8 to realize damping and torque. The outermost part of the base 1 also includes a positioning block 10 for fixing the spring 9. The base 1 is provided with a third arc-shaped block 108, and the second connecting arm 4 is provided with a fifth curved groove 413. The third arc-shaped block 108 slides in the fifth curved groove 413.

[0025] Example 2:

[0026] The motion-synchronous rotation mechanism for the flexible screen application provided in this embodiment includes a base 1 and two sets of movable frames 2 disposed on both sides of the base 1. A first connecting arm 3 and a second connecting arm 4 are provided between the base 1 and the movable frames 2 to achieve rotatable connection. A synchronization slider 5 and a third connecting arm 6 are also provided between the base 1 and the movable frames 2 to achieve synchronization. The synchronization slider 5 is disposed on the base 1, and the third connecting arm 6 is connected to the synchronization slider 5 and the movable frames 2 respectively to achieve motion synchronization. The synchronization slider 5 is provided with a first rotation hole 51 and teeth. The base 1 is provided with a fourth curved groove 106 and a transverse sliding groove 102. The third connecting arm 6 is provided with a first slider 61, a first rotating column 62, a third toothed groove 64 and a fourth rotating column 65. The movable frame 2 is provided with a first sliding groove 201. The first rotating column 62 is rotatably engaged with the first rotating hole 51. The transverse slider 53 slides in the transverse sliding groove 102. The rack 52 meshes with the third toothed groove 64. The fourth curved groove 106 is rotatably engaged with the fourth rotating column 65.

[0027] The difference between this embodiment and traditional technology is that:

[0028] A synchronization slider 5 is designed on the base 1, and a third connecting arm 6 is set between the base 1 and the movable frame 2. One end of the third connecting arm 6 is connected to the movable frame 2, and the other end is connected to the base 1 through the synchronization slider 5 to achieve synchronization. Because the synchronization slider 5 slides laterally with the base 1, the synchronization slider 5 and the third connecting arm 6 are dynamically connected. The third connecting arm 6, the base 1 and the synchronization slider 5 are provided with meshing racks and teeth. When the whole is synchronized during rotation, the third connecting arm moves back and forth relative to the base. High-precision synchronization is achieved through mutual restraint. During rotation, the whole mechanism squeezes the screen inward, which reduces the large arc length of the rotation and bending stroke, ensuring a longer bending length, reducing screen creases and thus reducing damage to the screen.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Therefore, without departing from the design spirit of the present utility model, any equivalent changes or modifications made by those skilled in the art to the structure, features and principles of the present utility model should fall within the protection scope of the patent application of the present utility model.

Claims

1. A motion-synchronous rotation mechanism for flexible screen applications, characterized in that: It includes a base and two sets of movable frames disposed on both sides of the base, wherein a first connecting arm and a second connecting arm are provided between the base and the movable frames to enable a rotatable connection; A synchronization slider and a third connecting arm are provided between the base and the movable frame to achieve synchronization. The synchronization slider is set on the base, and the third connecting arm is connected to the synchronization slider and the movable frame respectively to achieve synchronized movement. The synchronous slider is provided with a first rotating hole, a rack and a transverse slider, the base is provided with a first tooth and a transverse groove, the third connecting arm is provided with a first slider, a first rotating column, a second tooth and a third tooth, and the movable frame is provided with a first groove. The first rotating column is rotatably engaged with the first rotating hole, the transverse slider slides within the transverse groove, the rack meshes with the third toothed groove, and the first toothed groove meshes with the second toothed groove.

2. The motion-synchronous rotation mechanism for flexible screen applications according to claim 1, characterized in that: The first connecting arm is provided with a first curved groove and a second curved groove, the base is provided with a first arc-shaped block, and the movable frame is provided with a second arc-shaped block. The first arc-shaped block slides in the first curved groove, and the second arc-shaped block slides in the second curved groove.

3. The motion-synchronous rotation mechanism for flexible screen applications according to claim 1, characterized in that: The movable frame is provided with a third curved groove, and a pin is provided in the third curved groove. The second connecting arm is provided with a pin hole. The pin and the pin hole cooperate to realize the connection between the movable frame and the second connecting arm. An end-connecting block is provided on one side of the base. The end-connecting block is provided with a third curved groove. A third arc-shaped block is provided on the third connecting arm. The third arc-shaped block slides with the third curved groove. A locking groove is provided in the third curved groove. A protrusion is provided on the corresponding third arc-shaped block. The protrusion and the locking groove engage to achieve locking positioning.

4. The motion-synchronous rotation mechanism for flexible screen applications according to claim 3, characterized in that: The outer side of the end connecting block is provided with a connecting shaft, and the connecting shaft is provided with a spring to realize damping and torque.

Images