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CN-121982970-A - Flexible screen bending device

CN121982970ACN 121982970 ACN121982970 ACN 121982970ACN-121982970-A

Abstract

The invention discloses a flexible screen bending device which comprises a first middle frame, a second middle frame, a middle supporting plate, a first transmission rod and a second transmission rod, wherein the middle supporting plate is arranged between the first middle frame and the second middle frame in a strip shape, the first transmission rod and the second transmission rod are installed on the middle supporting plate and extend towards the outer side of the middle supporting plate in a reverse direction respectively, one side of a movable door plate, which is far away from the first transmission rod or the second transmission rod, is rotatably connected with the first middle frame or the second middle frame, the lower surface of the movable door plate is provided with an installation block provided with a strip-shaped hole, two side surfaces of each connecting rod part of the first transmission rod and the second transmission rod are respectively provided with a bump, a sliding groove for embedding one end of each connecting rod part is arranged on the first middle frame and the second middle frame, and two inner walls of each sliding groove are respectively provided with a guide groove extending along the sliding direction of the connecting rod parts. The invention not only greatly reduces the weight of the whole equipment, meets the light weight requirement of the electronic equipment and improves the user experience, but also avoids crease of the flexible screen in the repeated opening and closing process of the equipment and prolongs the service life of the flexible screen.

Inventors

  • WAN PENGCHENG
  • XU JINGEN

Assignees

  • 昆山科森科技股份有限公司

Dates

Publication Date
20260505
Application Date
20230628

Claims (8)

  1. 1. The flexible screen bending device comprises a first middle frame (100), a second middle frame (200), a middle supporting plate (1) arranged between the first middle frame (100) and the second middle frame (200) in a strip shape, and a first transmission rod (10) and a second transmission rod (11) which are arranged on the middle supporting plate (1) and respectively extend towards the outer side of the middle supporting plate (1), wherein one end of each of the first transmission rod (10) and the second transmission rod (11) is rotatably arranged on the middle supporting plate (1), the other end of each of the first transmission rod and the second transmission rod is connected with the first middle frame (100) or the second middle frame (200), the flexible screen (300) is covered and applied on the upper surface or the lower surface of the first middle frame (100) and the second middle frame (200), and is characterized in that a first side supporting plate (15) and a second side supporting plate (16) are respectively arranged between the middle supporting plate (1) and the first middle frame (100) and the second middle frame (200), and the upper surfaces of the first side supporting plate (15) and the second side supporting plate (16) are respectively provided with a plurality of middle supporting plates (17) which are connected with the middle supporting plates (200) along the length of each middle frame (17) in the direction; The first transmission rod (10) and the second transmission rod (11) further comprise a gear end (111), a connecting rod part (112) and a transmission part (113) which are sequentially connected, wherein the gear end (111) with a gear body is rotatably arranged on a first base (141) or a second base (142) arranged on the upper surface of the middle supporting plate (1), the connecting rod part (112) is in sliding connection with a first middle frame (100) or a second middle frame (200), a transmission gear (12) meshed with the gear end (111) is rotatably arranged on one side of the first base (141) and the second base (142) opposite to the gear end (111), the transmission gear (12) is connected with an output shaft of an electric control motor (13) arranged on the outer side of the first base (141) or the second base (142), the transmission part (113) is connected with a movable door plate (22) arranged on two sides of the middle supporting plate (1), the movable door plate (22) is far away from the first transmission rod (10) or the second transmission rod (10), one side of the first door plate (11) is rotatably arranged on one side of the first base (10) and the second door plate (200), a strip-shaped transmission rod (24) is arranged on one side of the first transmission rod (10) and the upper surface (200) of the first door plate (10) is provided with a strip-shaped transmission hole (23), and the transmission rod (24) is rotatably arranged on the upper door plate (2) and the upper door plate (2) is provided with a strip-shaped transmission plate, the transmission part (113) of the second transmission rod (11) is connected with the strip-shaped hole (23) through a pin shaft (25), and the pin shaft (25) in running fit with the transmission part (113) is in sliding fit with the inner wall of the strip-shaped hole (23); Two side surfaces of each connecting rod part (112) of the first transmission rod (10) and the second transmission rod (11) are respectively provided with a lug (20), a chute (21) for embedding one end of each connecting rod part (112) is arranged on the first middle frame (100) and the second middle frame (200), two guide grooves (211) extending along the sliding direction of each connecting rod part (112) are respectively formed in two inner walls of each chute (21), and the lug (20) is correspondingly embedded into each guide groove (211).
  2. 2. The flexible screen bending device as set forth in claim 1, wherein the gear ends (111) of the first transmission rod (11) and the second transmission rod (12) are sleeved on a third pin shaft, and two ends of the third pin shaft connected with the 2 mounting plates (143) are respectively connected with the corresponding mounting plates (143) in a rotating manner.
  3. 3. The flexible screen bending apparatus according to claim 1, wherein the upper surface of the middle support plate (1) is provided with a mounting seat (2), a first linkage rod (31) and a second linkage rod (32) are rotatably mounted on the mounting seat (2), one end of each of the first linkage rod (31) and the second linkage rod (32) which are symmetrically arranged is rotatably mounted on the mounting seat (2), the other end of each of the first linkage rod and the second linkage rod extends away from the mounting seat (2) and is in sliding connection with the first middle frame (100) or the second middle frame (200), one ends of the first linkage rod (31) and the second linkage rod (32) which are close to each other are connected through a sliding block (4), the sliding block (4) is slidably mounted on the middle support plate (1) and can reciprocate in a direction perpendicular to the lengths of the first linkage rod (31) and the second linkage rod (32), a first sliding part (61) and a second sliding part (61) which are in sliding connection with a first sliding part (61) and a second sliding part (52) which are in sliding connection with a second sliding part (52) which is arranged between the sliding blocks (4) and the second linkage rod (31) which are in a direction which is deviated from the first sliding part (52) and the second sliding part (31), and an arc-shaped track in the length direction of the second linkage rod (32).
  4. 4. A flexible screen bending apparatus according to claim 3, wherein the lower surface of the end of the first linkage rod 31, the lower surface of the end of the second linkage rod 32, which is connected with the sliding block 4, and the upper surface of the sliding block 4 are arc-shaped surfaces.
  5. 5. The flexible screen bending device according to claim 3, wherein the mounting base (2) further comprises a first mounting plate (201) and a second mounting plate (202) which are arranged face to face at intervals, the sliding block (4) can move between the first mounting plate (201) and the second mounting plate (202), a first magnet (91) extending along the moving direction of the sliding block is embedded and mounted on the sliding block (4), a second magnet (92) which can be in adsorption fit with the first magnet (91) is mounted on each of the first mounting plate (201) and the second mounting plate (202), when the sliding block (4) is attached to the first mounting plate (201), an included angle between the first linkage rod (31) and the second linkage rod (32) is the largest, and a second magnet (92) on the first mounting plate (201) is in adsorption fit with the first magnet (91), and when the sliding block (4) is attached to the second mounting plate (202), an included angle between the first linkage rod (31) and the second linkage rod (32) is the second magnet (92) is the smallest.
  6. 6. The flexible screen bending apparatus according to claim 5, wherein each of the 2 second magnets 92 is configured as an electromagnet for facilitating electromechanical control.
  7. 7. A flexible screen bending apparatus according to claim 5, wherein the end surfaces of both ends of said first magnet 91 are flush with the side surfaces of the slider 4.
  8. 8. The flexible screen bending apparatus according to claim 5, wherein a guide hole 71 is formed on the upper surface of the middle support plate 1 and between the first mounting plate 201 and the second mounting plate 202, a guide protrusion 72 is disposed on the lower surface of the sliding block 4 and is embedded in the guide hole 7, and the length of the guide protrusion 72 is smaller than the length of the guide hole 71.

Description

Flexible screen bending device Technical Field The invention relates to the technical field of electronic products, in particular to a flexible screen bending device. Background As an application technology of the OLED, a flexible screen has been developed significantly in recent years. Compared with a rigid screen, the flexible screen has the remarkable advantages, such as lighter and thinner volume and lower power consumption, and the flexible screen has the characteristics of flexibility and good flexibility, and the application scene of the flexible screen is wider and wider, for example, the flexible screen is utilized to carry intelligent mobile equipment, and the switching between the folding state and the unfolding state of the equipment screen can be realized. Folding screens can be classified as screen inward folds and screen outward folds, with the difference being whether the screen is inside or outside after folding. Folding and opening of the folding screen device, whether inward folding or outward folding, is generally achieved through a rotating shaft. The prior application of the inventor discloses a technical scheme of a rotating shaft which can be used for a flexible folding screen, for example, CN217061309U, CN217814518U, however, the prior application discloses a technical scheme of the rotating shaft which can be used for the flexible folding screen, the damping mechanism is used as an essential component, the number of components is large, the friction in the components is depended on to generate resistance, the number of components is large, the assembly is complicated, the weight of a metal part selected for meeting the requirement of wear resistance is heavy, the whole structure is overweight, and in the specific use process, for example, the damping mechanism is used as the rotating shaft of the folding electronic device, the user experience is poor, and the requirement of the damping mechanism is inconsistent with the requirement of the electronic device for lightening. Disclosure of Invention The invention mainly aims to provide the flexible screen bending device which can be used as external folding equipment and internal folding equipment, can greatly lighten the whole weight of the equipment, meets the light weight requirement of electronic equipment and improves the user experience. In order to achieve the above purpose, the invention adopts the following technical scheme: the flexible screen bending device comprises a first middle frame, a second middle frame, a middle supporting plate, a first transmission rod and a second transmission rod, wherein the middle supporting plate is arranged between the first middle frame and the second middle frame in a strip shape, the first transmission rod and the second transmission rod are arranged on the middle supporting plate and extend towards the outer side of the middle supporting plate respectively, one end of each of the first transmission rod and the second transmission rod is rotatably arranged on the middle supporting plate, the other end of each of the first transmission rod and the second transmission rod is connected with the first middle frame or the second middle frame, and the flexible screen is covered and applied on the upper surfaces or the lower surfaces of the first middle frame and the second middle frame. The first transmission rod and the second transmission rod further comprise a gear end, a connecting rod part and a transmission part which are sequentially connected, wherein the gear end with a gear body is rotatably arranged on a first base or a second base arranged on the upper surface of the middle supporting plate, the connecting rod part is in sliding connection with the first middle frame or the second middle frame, a transmission gear meshed with the gear end is rotatably arranged on one side of the first base and the second base, opposite to the side of the connecting rod part, of the gear end, the transmission gear is connected with an output shaft of an electric control motor arranged on the outer side of the first base or the second base, the transmission part is connected with a movable door plate arranged on two sides of the middle supporting plate, one side of the movable door plate far away from the first transmission rod or the second transmission rod is rotatably connected with the first middle frame or the second middle frame, a mounting block provided with a strip-shaped hole is arranged on the lower surface of the movable door plate, and the transmission part of the first transmission rod and the second transmission rod is connected with the strip-shaped hole through a pin shaft, and the pin shaft in sliding fit with the inner wall of the strip-shaped hole in a rotating fit manner with the transmission part; the two side surfaces of each connecting rod part of the first transmission rod and the second transmission rod are respectively provided with a bump, the first middle frame and the seco