Disclosure of Invention
Aiming at the problems in the prior art, the invention mainly aims to provide a flexible screen folding mechanism capable of being turned uniformly by hand, which is used for realizing uniform and synchronous opening and closing of a first part and a second part of a flexible screen and protecting the folding part of the flexible screen from wrinkles.
In order to achieve the above object, the present invention provides a folding mechanism for a flexible screen capable of being uniformly turned manually, which comprises a folding part connected between a first part and a second part of the flexible screen, and comprises:
a first carrier carrying the first portion of the flexible screen and the connecting portion of the folding portion.
A second carrier carrying the second portion of the flexible screen and the connecting portion of the folding portion.
And the linkage assembly is used for driving and connecting the first bearing piece and the second bearing piece.
When the flexible screen is folded or unfolded, the first bearing part and the second bearing part are synchronously driven by the linkage assembly to rotate in opposite directions or in opposite directions, so that the first bearing part bears the connecting part of the first part and the folding part of the flexible screen, the second bearing part bears the connecting part of the second part and the folding part of the flexible screen, and two sides of the folding part of the flexible screen can be synchronously bent to keep the stress uniform.
Optionally, the linkage assembly includes a first rotating member, a second rotating member and a third rotating member, the upper surface of which is trapezoidal in profile.
When the flexible screen is folded, the inclined parts of the upper surfaces of the first rotating piece, the second rotating piece and the third rotating piece are mutually close to form an outward concave accommodating area so as to accommodate the folded part of the flexible screen.
Optionally, the second rotating member is rotatably connected to the first rotating member and the third rotating member respectively through the first rotating shaft.
The first rotating piece and the third rotating piece are respectively connected with the first bearing piece and the second bearing piece in a rotating mode through a second rotating shaft.
Optionally, the linkage assembly further comprises:
and the first bevel gear set is used for driving and connecting the first rotating member and the first bearing member.
And the transition bevel gear set is used for driving and connecting the first rotating member and the third rotating member.
And a second bevel gear set drivingly connecting the third rotation to the second carrier.
The first helical gear set and the second helical gear comprise a first helical gear coaxially arranged on the first rotating shaft, a second helical gear coaxially arranged on the second rotating shaft, and an intermediate helical gear which is arranged between the first helical gear and the second helical gear and is respectively meshed with the first helical gear and the second helical gear. The axis of the middle bevel gear is orthogonal to the axes of the first bevel gear and the second bevel gear, and when the first bevel gear rotates, the first bevel gear drives the second bevel gear to synchronously rotate in the same direction through the middle bevel gear.
The transition bevel gear set comprises an even number of transition bevel gears which are meshed with each other, and the transition bevel gears on two sides are respectively meshed with the second bevel gears on the first rotating part and the third rotating part.
Optionally, the first helical gear set is disposed at two ends of the first rotating member, the transition helical gear set is disposed at two ends of the second rotating member, and the second helical gear set is disposed at two ends of the third rotating member.
Optionally, the first and second helical gear sets further comprise a fixing member having two oppositely disposed clipping walls, and the rotating portion of the intermediate helical gear is rotatably engaged with the clipping walls.
Optionally, a first bearing plate for bearing the first portion of the flexible screen is disposed outside the first bearing member.
And a second bearing plate for bearing the second part of the flexible screen is arranged on the outer side of the second bearing piece.
Optionally, the upper surfaces of the first bearing piece and the second bearing piece close to the linkage assembly are provided with protrusions, and one sides of the protrusions opposite to the linkage assembly are provided with arc-shaped bearing curved surfaces.
When the flexible screen is folded, the arc-shaped bearing curved surface of the first bearing part bears the first part of the flexible screen and the connecting part of the folding part, and the arc-shaped bearing curved surface of the second bearing part bears the connecting part of the second part of the flexible screen and the folding part.
Optionally, when the flexible screen is in the unfolded state, the end of the protruding portion of the first bearing piece and the end of the protruding portion of the second bearing piece can support the folded portion of the flexible screen, so that the folded portion of the flexible screen is kept flat.
The invention also provides electronic equipment which comprises the flexible screen and the flexible screen folding mechanism capable of being manually and uniformly turned.
The invention has the beneficial effects that: the first bearing parts and the second bearing parts are arranged on two sides of the linkage assembly of the folding mechanism respectively, when the flexible screen is folded or unfolded, the linkage assembly synchronously drives the first bearing parts and the second bearing parts to rotate in opposite directions or in opposite directions, so that the first bearing parts bear the connecting parts of the first part and the folding part of the flexible screen, the second bearing parts bear the connecting parts of the second part and the folding part of the flexible screen, and two sides of the folding part of the flexible screen can be synchronously bent to keep the stress uniform. Therefore, the first part and the second part of the flexible screen can be synchronously opened and closed, and the folding part of the flexible screen can be protected from being wrinkled.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 of the specification, an embodiment of the present invention provides an electronic device, which includes a flexible screen 4 and a folding mechanism connected to a folding portion 4c between a first portion 4a and a second portion 4e of the flexible screen 4, where the folding mechanism is configured to implement uniform and synchronous opening and closing of the first portion 4a and the second portion 4e of the flexible screen 4 and protect the folding portion 4c of the flexible screen 4.
Specifically, the folding mechanism includes: a first carrier 1 carrying the first portion 4a of the flexible screen 4 and the connecting portion 4b of the folded portion 4c, a second carrier 2 carrying the second portion 4e of the flexible screen 4 and the connecting portion 4d of the folded portion 4c, and a linkage assembly 3 drivingly connecting the first carrier 1 and the second carrier 2.
When the flexible screen 4 is folded or unfolded, the linkage assembly 3 can synchronously drive the first bearing part 1 and the second bearing part 2 to rotate in the opposite directions or in the opposite directions, so that the two sides of the folding part 4c of the flexible screen 4 can be synchronously bent or unfolded, the stress on each point of the folding part 4c is ensured to be uniform, the roundness of the bending contour of the folding part 4c after being folded is ensured, and the extrusion damage to the folding part 4c of the flexible screen 4 is reduced.
And, when folding or unfolding flexible screen 4, first carrier 1 can laminate and bear connecting portion 4b of flexible screen 4, and second carrier 2 can laminate and bear connecting portion 4d of flexible screen 4 to the fold appears after avoiding folding.
Alternatively, as shown in fig. 1, in the present embodiment, the first carrier 1 is provided with a first carrier plate 11 for carrying the first portion 4a of the flexible screen 4 on the outer side, and the second carrier 2 is provided with a second carrier plate 12 for carrying the second portion 4e of the flexible screen 4 on the outer side. Thereby, the first and second portions 4a and 4e of the flexible screen 4 can be supported.
Alternatively, as shown in fig. 3 to 4, in the present embodiment, the linkage assembly 3 includes a first rotating member 31, a second rotating member 32 and a third rotating member 33, and the outlines of the upper surfaces (31a, 32a, 33a) of the first rotating member 31, the second rotating member 32 and the third rotating member 33 are arranged in a trapezoid shape.
Thus, when the flexible screen 4 is folded, the inclined portions of the upper surfaces (31a, 32a, 33a) of the first, second, and third rotating members 31, 32, and 33 come close to each other to form an accommodation area that is recessed outward so as to be able to accommodate the folded portion 4c of the flexible screen 4.
Alternatively, as shown in fig. 5 to 8, in the present embodiment, the first rotating member 31 and the third rotating member 33 are rotatably connected to the first carrier 1 and the second carrier 2 by a first rotating shaft 34, respectively. The second rotating member 32 is rotatably connected to the first rotating member 31 and the third rotating member 33 via a second rotating shaft 35.
Specifically, a first rotation shaft mounting hole 31b is provided between the first rotation member 31 and the first carrier 1, a first rotation shaft mounting hole 33b is provided between the third rotation member 33 and the second carrier 2, the first rotation shaft mounting holes (31b, 33b) are respectively provided on the side where the first rotation member 31 and the first carrier 1 face each other and the side where the third rotation member 33 and the second carrier 2 face each other, and are arranged alternately, and the first rotation shaft is inserted 34 into these second rotation shaft mounting holes (31b, 33 b). Wherein the first axle mounting holes on the first carrier 1 and the second carrier 2 are not shown.
Second rotating shaft mounting holes (31c, 32a) are formed between the first rotating member 31 and the second rotating member 32, second rotating shaft mounting holes (32b, 33c) are formed between the second rotating member 32 and the third rotating member 33, the second rotating shaft mounting holes (31c, 32a) are respectively arranged on the mutually facing sides of the first rotating member 31 and the second rotating member 32, the second rotating shaft mounting holes (32b, 33c) are respectively arranged on the mutually facing sides of the second rotating member 32 and the third rotating member 33 in a staggered mode, and the second rotating shafts 35 are inserted into the second rotating shaft mounting holes.
Thereby, a rotational fit between the respective rotating member and the carrier of the folding mechanism is achieved.
Optionally, as shown in fig. 5, in the present embodiment, the linkage assembly 3 further includes: a first bevel gear set 36 drivingly connecting the first rotational member 31 and the first carrier 1, a transition bevel gear set 37 drivingly connecting the first rotational member 31 and the third rotational member 33, and a second bevel gear set 38 drivingly connecting the third rotational member and the second carrier 2.
As shown in fig. 6, the first helical gear set 36 includes a first helical gear 361 coaxially disposed on the first rotating shaft 34, a second helical gear 362 coaxially disposed on a second rotating shaft, not shown, and an intermediate helical gear 363 interposed between the first helical gear 361 and the second helical gear 362 and meshing with the first helical gear 361 and the second helical gear 362, respectively.
The axis of the intermediate bevel gear 363 is orthogonal to the axes of the first bevel gear 361 and the second bevel gear 362, and when the first bevel gear 361 rotates, the first bevel gear 361 drives the second bevel gear 362 to synchronously rotate in the same direction through the intermediate bevel gear 363.
As shown in fig. 7, the transition helical gear set 37 includes an even number of transition helical gears (371, 372) that mesh with each other, and the transition helical gears (371, 372) on both sides mesh with the second helical gears (362, 382) on the first rotating member 31 and the third rotating member 33, respectively. It should be noted that the number of the transition bevel gears can be increased or decreased according to the folding requirement of the flexible panel 4, for example, when the folding radius of the flexible panel 4 needs to be decreased, the number of the transition bevel gears can be decreased, when the folding radius of the flexible panel 4 needs to be increased, the number of the transition bevel gears can be increased, and the number of the transition bevel gears can be always kept to be even. In the present embodiment, the number of the transition helical gears is set to two.
As shown in fig. 8, the second helical gear set 38 and the first helical gear set 36 are symmetrically arranged with respect to the middle vertical plane of the second rotating member 32, and include a first helical gear 381 coaxially disposed on a first rotating shaft, not shown, a second helical gear 382 coaxially disposed on the second rotating shaft 35, and an intermediate helical gear 383 interposed between the first helical gear 381 and the second helical gear 382 and meshing with the first helical gear 381 and the second helical gear 382, respectively, and having an axis orthogonal to the axes of the first helical gear 381 and the second helical gear 382.
As shown in fig. 5-9, in the present embodiment, when the second carrier plate 21 rotates towards the first carrier plate 11, the second carrier plate 21 drives the second carrier 2 to rotate, and the second carrier 2 drives the first bevel gear 381 connected to the second bevel gear set 38 to rotate counterclockwise. Then, the first bevel gear 381 drives the second bevel gear 382 to rotate counterclockwise through the intermediate bevel gear 383. The second bevel gear 382 then drives the second bevel gear 362 of the first bevel gear set 36 via the transition bevel gear set 37 to rotate clockwise. Finally, the second bevel gear 362 drives the first bevel gear 361 through the middle bevel gear 363, and further drives the first bearing plate 11 to move towards the second bearing plate 21.
The sizes of the first bevel gears (361, 381), the second bevel gears (362, 382) and the transition bevel gears (371, 372) are the same, and thus, the second bearing plate 21 is turned over to the first bearing plate 11 by α degrees, the first bearing plate 11 can be synchronously driven to be turned over to the second bearing plate 21 by α degrees through the first bevel gear set 36, the transition bevel gear set 37 and the second bevel gear set 38, and the rotation speeds are the same, so that uniform and synchronous closing of the first bearing plate 11 and the second bearing plate 21 can be realized, and uniform and synchronous closing folding of the first part 4a and the second part 4e of the flexible screen 4 can be realized.
Similarly, when the second loading plate 21 is rotated to the opposite side of the first loading plate 11, the first portion 4a and the second portion 4e of the flexible screen 4 can be uniformly and synchronously unfolded.
In addition, the helical gears are adopted for transmission, the helical gears can be meshed together at a certain angle during rotation, no inter-tooth gap exists, the overall stability is better, the folding mechanism is not prone to shaking in the bending or unfolding process, and therefore the flexible screen 4 can be guaranteed to be more stable and smooth in the folding or unfolding process.
Alternatively, as shown in fig. 5, in the present embodiment, two first bevel gear sets 36, two transition bevel gear sets 37 and two second bevel gear sets 38 are provided, the two first bevel gear sets 36 are respectively provided at both ends of the first rotating member 31, the two transition bevel gear sets 37 are respectively provided at both ends of the second rotating member 32, and the two second bevel gear sets 38 are respectively provided at both ends of the third rotating member 33. Therefore, the stability of the folding mechanism in the bending or unfolding process can be ensured.
Alternatively, as shown in fig. 6 and 8, the first and second bevel gear sets 36 and 38 each include a fixing member (364, 384), the fixing member (364, 384) having two oppositely disposed clamping walls, and the rotating portion of the intermediate bevel gear (363, 383) is rotatably engaged with the clamping walls.
Alternatively, as shown in fig. 3, 10 and 11, the upper surfaces of the first carrier 1 and the second carrier 2 near the linkage assembly 3 have protrusions (1a, 2a), and the side of the protrusions (1a, 2a) opposite to the linkage assembly 3 has an arc-shaped bearing curved surface (1b, 2 b).
Thus, when the flexible screen 4 is folded or unfolded, the first bearing part 1b of the bearing part 1 bears the connecting part 4b of the flexible screen 4, and the second bearing part 2b of the bearing part 2 bears the connecting part 4d of the flexible screen 4, so as to avoid folding.
When the flexible screen 4 is in the unfolded state, the end part of the protruding part 1a of the first bearing part 1 and the end part of the protruding part 2a of the second bearing part 2 can support the folded part 4c of the flexible screen 4, so that the folded part 4c of the flexible screen 4 is kept flat, and the overall appearance of the flexible screen 4 is improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.