Multi-motor direct drive type drawing mechanism applied to flexible screen

Abstract

The utility model discloses a multi-motor direct drive type drawing mechanism applied to a flexible screen, which comprises a fixed seat and a sliding seat, the flexible screen capable of stretching and sliding is arranged between the fixed seat and the sliding seat, and a plurality of groups of driving motors and a longitudinally distributed gear shaft are arranged on the fixed seat. The driving motor is in driving connection with the gear shaft through gears which are meshed with each other; a connecting block is arranged on the sliding seat, a first guide wheel is arranged on the fixed seat, a belt with clamping teeth is fixedly connected to the connecting block, after the belt is fixed through the connecting block, the belt, a gear at the end position of the gear shaft and the first guide wheel form a closed rotating loop, and the belt with the clamping teeth is directly fixed to the connecting block of the sliding seat. A motion loop is achieved through a gear shaft and a roller, direct drive type stretching and retracting are achieved, the synchronism of mechanism operation can be further guaranteed without intervention of middleware, it is particularly guaranteed that stretching and retracting are both supplied by power, the overall structural design is simple, space is effectively saved, and application of electronic terminals of different sizes is met.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible screen application, in particular to a flexible screen terminal design technology, and specifically to a multi-motor direct-drive pulling mechanism for flexible screen application. 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, monitors 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 formed on its stacked structure. Due to the relationship between the multiple layers, different layers of the flexible display screen will have factors such as elastic changes, and its movement trajectory is bound to be irregular. When the flexible screen is used on the machine, it needs to have good plasticity and ductility. The test lies in: whether the screen can 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.

[0004] To realize the folding function of the flexible screen, the folding connection component, that is, the design of the connecting axis at the bend is also one of the biggest technical challenges. The problems of low processing yield and high cost also need to be solved urgently. In addition to outward folding and inward folding, the pull-out unfolding method is also one of the ways to open the flexible screen.

[0005] Traditional pulling and retracting mechanisms generally use two sets of motors to drive the upper and lower parts separately. The synchronization problem between the motors is difficult to coordinate. When the driving time of the two sets of motors is not synchronized, the upper and lower extension and retraction will cause asynchronous tilt, and the overall synchronization cannot be achieved smoothly, and the pulling and retracting functions cannot be smoothly realized.

[0006] In addition, when the terminal has high power requirements, it will consider adding motors to achieve power matching. As the number of motors increases, it will be more difficult to achieve its function if their synchronization cannot be matched as a whole. Utility Model Content

[0007] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a multi-motor direct-drive pulling mechanism for flexible screen applications.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A multi-motor direct-drive pull-out mechanism for a flexible screen includes a fixed seat and a sliding seat, a telescopic and sliding flexible screen is arranged between the fixed seat and the sliding seat, a plurality of drive motors and a longitudinally distributed gear shaft are arranged on the fixed seat, and a driving connection is achieved between the drive motor and the gear shaft through mutually meshing gears;

[0010] The sliding seat is provided with a connecting block, the fixed seat is provided with a first guide wheel, the connecting block is fixedly connected with a belt with latching teeth, and after the belt is fixed by the connecting block, it forms a closed-loop rotating circuit with the gear at the end of the gear shaft and the first guide wheel.

[0011] Particularly, it further comprises a pull rope, a second guide wheel is arranged on the connecting block, one end of the pull rope is fixedly connected to the sliding seat, and the other end is fixedly connected to the fixing seat after passing around the second guide wheel.

[0012] In particular, a roller and a fixing plate under the screen are provided on one side of the sliding seat, one end of the flexible screen is connected to the fixing seat, and the other end passes around the roller and is fixedly connected to the sliding seat through the fixing plate under the screen.

[0013] Particularly, a plurality of sets of screw guide rails are provided between the sliding seats, and a screw guide groove which is slidably matched with the screw guide rails is provided on the fixed seat.

[0014] Particularly, the fixed seat is provided with a plurality of groups of transverse sliding grooves, and the sliding seat is provided with a transverse sliding block which slides relative to the transverse sliding grooves.

[0015] The beneficial effect of the present invention is that the multi-motor direct-drive pulling mechanism for the flexible screen application provided by the present invention is directly connected to the motor drive through the longitudinal gear shaft, which effectively ensures the synchronization of the motor drive. When multiple motors need to be installed, it is only necessary to add the corresponding driving gear to the gear shaft, which meets the power requirements without affecting the overall synchronization. The belt with cards is directly fixed on the connecting block of the sliding seat, and the motion circuit is realized with the gear shaft and the roller to realize direct-drive extension and retraction. The lack of intervention from middleware can further ensure the synchronization of the mechanism operation, especially ensuring that the extension and retraction are both powered by power, ensuring that the application experience is superior, the overall structural design is simple, and space is effectively saved to meet the application of electronic terminals of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the closed state of the overall structure in the embodiment of this patent.

[0017] Figure 2 It is a schematic diagram of the overall structure in the open state in the embodiment of this patent.

[0018] Figure 3 This is one of the local structural diagrams in the closed state in the embodiment of this patent.

[0019] Figure 4 This is the second local structure diagram of the closed state in the embodiment of this patent.

[0020] Figure 5 , Figure 6 , Figure 7 and Figure 8 All of them are partial structural diagrams of the open state in the embodiments of this patent.

[0021] Fig. 9 It is a schematic diagram of the replacement structure in the embodiment of this patent. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Embodiment 1:

[0024] like Figure 1-Figure 8 As shown, the multi-motor direct-drive pulling mechanism for the flexible screen application provided in this embodiment includes a fixed seat 1 and a sliding seat 2, a telescopic and sliding flexible screen 3 is provided between the fixed seat 1 and the sliding seat 2, a plurality of drive motors 4 and a longitudinally distributed gear shaft 5 are provided on the fixed seat 1, and the drive motor 4 and the gear shaft 5 are driven and connected by mutually meshing gears 6; a connecting block 7 is provided on the sliding seat 2, a first guide wheel 8 is provided on the fixed seat 1, a belt 9 with a latch 91 is fixedly connected to the connecting block 7, and the belt 9 is fixed by the connecting block 7 to form a closed-loop rotating circuit with the end gear 51 of the gear shaft 5 and the first guide wheel 8. When the motor provides power, the gear shaft 5 starts to rotate after being driven by power, and the rotation will drive the belt 9 to rotate around the circuit. Because the belt 9 is fixedly connected to the connecting block 7, the connecting block 7 will be forced to move, and the connecting block 7 is fixedly connected to the sliding seat 2, and the sliding seat 2 will slide relative to the fixed seat 1 to achieve telescoping, thereby driving the flexible screen 3 to unfold and close. In the above embodiment, two sets of identical belts 9 and the connecting block 7 and the first guide wheel 8 matched therewith are distributed up and down along the gear shaft 5. In this embodiment, the end gear 51 is also used to drive the drive motor 4 and the gear shaft 5. The fixed position of the belt 9 and the connecting block 7 is provided with a tooth pattern 52 matching the tooth 51 of the belt 9, so as to facilitate a better rotation effect.

[0025] It also includes a pull rope 10 for achieving synchronization. The connecting block 7 is provided with a second guide wheel 11. One end of the pull rope 10 is fixedly connected to the sliding seat 2, and the other end is fixedly connected to the fixed seat 1 after passing through the second guide wheel 11. A roller 12 and a lower screen fixing plate 13 are provided on one side of the sliding seat 2. One end of the flexible screen 3 is connected to the fixed seat 1, and the other end is fixedly connected to the sliding seat 2 through the lower screen fixing plate 13 after passing through the roller 12. A plurality of sets of screw guide rails 14 are also provided between the sliding seats 2, and a screw guide groove 15 that slides with the screw guide rail 14 is provided on the fixed seat 1. A plurality of sets of transverse guide grooves 16 are provided on the fixed seat 1, and a transverse slider 17 that slides relative to the transverse guide groove 16 is provided on the sliding seat 2.

[0026] like Fig. 9 As shown, in the above embodiment, the belt with the teeth can also be directly replaced by a rope 20, and the rope 20 can be a pull rope or a wire rope, etc., and one end of the rope 20 is directly fixedly connected to the connecting block 7, and a third guide wheel 21 is set at the place where the end of the gear shaft 5 is connected to the rope 20. The rope 20 cooperates with the first guide wheel 8 and the third guide wheel 21 to form a closed loop and can also realize its function, driving the relative sliding between the sliding seat and the fixed seat.

[0027] This embodiment is different from the conventional technology in that:

[0028] It is directly connected to the motor drive through the longitudinal gear shaft, which effectively ensures the synchronization of the motor drive. When multiple motors need to be installed, it only needs to add the corresponding drive gear on the gear shaft to meet the power requirements without affecting the overall synchronization. The belt with cards is directly fixed on the connecting block of the sliding seat, and the motion circuit is realized with the gear shaft and the roller to realize direct-drive extension and retraction. The lack of intervention from middleware can further ensure the synchronization of the mechanism operation, especially ensuring that the extension and retraction are both powered, ensuring the superior application experience. The overall structural design is simple, effectively saving space, and meeting the application of electronic terminals of different sizes.

[0029] The above description is only a preferred embodiment of the utility model and does not limit the scope of the utility model. Therefore, without departing from the design spirit of the utility model, the equivalent changes or decorations made by ordinary engineering and technical personnel in this field to the structure, features and principles described in the utility model should fall within the protection scope of the patent application of the utility model.

Claims

1. A multi-motor direct-drive pulling mechanism for a flexible screen, comprising a fixed seat and a sliding seat, wherein a telescopic and sliding flexible screen is arranged between the fixed seat and the sliding seat, and characterized in that: The fixing seat is provided with a plurality of drive motors and a longitudinally distributed gear shaft, and the drive motors and the gear shaft are connected to each other by gears meshing with each other. The sliding seat is provided with a connecting block, the fixed seat is provided with a first guide wheel, the connecting block is fixedly connected with a belt with latching teeth, and after the belt is fixed by the connecting block, it forms a closed-loop rotating circuit with the gear at the end of the gear shaft and the first guide wheel.

2. The multi-motor direct-drive pulling mechanism for flexible screen application according to claim 1, characterized in that: It also includes a pull rope, a second guide wheel is provided on the connecting block, one end of the pull rope is fixedly connected to the sliding seat, and the other end is fixedly connected to the fixed seat after passing around the second guide wheel.

3. The multi-motor direct-drive pulling mechanism for flexible screen application according to claim 1, characterized in that: A roller and a fixing plate under the screen are provided on one side of the sliding seat. One end of the flexible screen is connected to the fixing seat, and the other end is fixedly connected to the sliding seat through the fixing plate under the screen after passing around the roller.

4. The multi-motor direct-drive pulling mechanism for flexible screen application according to claim 1, characterized in that: A plurality of sets of screw guide rails are arranged between the sliding seats, and a screw guide groove which is slidably matched with the screw guide rails is arranged on the fixed seat.

5. The multi-motor direct-drive pulling mechanism for flexible screen application according to claim 1, characterized in that: The fixed seat is provided with a plurality of groups of transverse sliding grooves, and the sliding seat is provided with a transverse sliding block which slides relatively with the transverse sliding grooves.

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