CN109788095A - A kind of flexible screen excurvation folding hinge structure based on Crankshaft motion - Google Patents
A kind of flexible screen excurvation folding hinge structure based on Crankshaft motion Download PDFInfo
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- CN109788095A CN109788095A CN201910136230.3A CN201910136230A CN109788095A CN 109788095 A CN109788095 A CN 109788095A CN 201910136230 A CN201910136230 A CN 201910136230A CN 109788095 A CN109788095 A CN 109788095A
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Abstract
The invention discloses a kind of flexible screen excurvation folding hinge structure based on Crankshaft motion, including crank mechanism, connecting rod, elastic base plate, with the matched 1/4 circular arc body component of elastic base plate pliable region and the first main body, the second main body, flexible screen；Crank mechanism includes at least one annulus, inner circle and pedestal；The connecting rod includes first connecting rod and second connecting rod；Elastic base plate includes two pliable regions, and elastic base plate first surface is pasted with flexible screen, second surface is pasted with the first main body first surface, the second main body first surface, crankshaft base bottom surface；With the matched 1/4 circular arc body component of elastic base plate pliable region, it is located at one end of the first main body, the second main body end side；First connecting rod and the one 1/4 circular arc body are hinged, and the other end and some position of crank mechanism annulus are hinged, do Crankshaft motion around annulus by connecting rod, change crankshaft pedestal and 1/4 circular arc body relative position, drive the folding of elastic base plate；Second connecting rod one end and the 2nd 1/4 circular arc body are hinged, and the other end and some position of crank mechanism inner circle are hinged, do Crankshaft motion around inner circle by connecting rod, change crankshaft pedestal and 1/4 circular arc body relative position, drive the folding of elastic base plate.
Description
Technical field
The present invention relates to a kind of fold mechanism of field of terminal technology, specially a kind of flexible screen based on Crankshaft motion
Fold mechanism belongs to fold mechanism technical field.
Background technique
Flexible screen typically refers to OLED (Organic Light-Emitting Diode, Organic Light Emitting Diode) display
Screen is widely used in electronic equipment of new generation because it has more frivolous and flexible characteristic at present, foldable to be formed
Formula terminal.Although flexible screen has flexible characteristic, foldable terminals not only need display screen to can be realized bending, also
The folding for needing that corresponding bending mechanism is cooperated just to be able to achieve terminal, therefore bending mechanism is designed to for main problem point.
Flexible screen Foldable mobile terminal can be divided into interior bending flexible screen movement eventually according to the position where screen after folding
End and outer bending flexible screen mobile terminal, wherein the screen area to bend is known as flexible screen area.This programme is main
A kind of bending structure design scheme of foldable terminals is provided, may be implemented to be folded outward bending, it is mobile eventually for outer bending flexible screen
End solves under folded state to the support under the receiving function and unfolded state of flexible screen area to flexible screen area
Function problem.
Summary of the invention
The technical problem to be solved in the present invention is that: one kind is provided and is folded outward warp architecture hinge design scheme, mainly can
Realize that foldable terminals are folded outward bending (refers to it is that the back side (one side of non-display screen) of relative termination is bent, flexibility after bending
Screen, which is located at, folds outside, also referred to as " backwards to bending "), it solves under folded state to the receiving function of flexible screen area and expansion
To the support function problem of flexible screen area under state.
The purpose of the present invention is achieved through the following technical solutions.
A kind of fold mechanism of the flexible screen based on Crankshaft motion, including crank mechanism, connecting rod, elastic base plate and bullet
The property matched 1/4 circular arc body component of substrate pliable region and the first main body, the second main body, flexible screen；The crankshaft machine
Structure includes at least one annulus, inner circle and pedestal；The connecting rod includes first connecting rod and second connecting rod；The elastic base plate
Including two pliable regions, elastic base plate first surface and flexible screen paste, second surface and the first main body first surface,
Second main body first surface, crankshaft base bottom surface are pasted；It is described with the matched 1/4 circular arc body group of elastic base plate pliable region
Part includes the one 1/4 circular arc body and the 2nd 1/4 circular arc body, is located at one end of the first main body, the second main body end side；Described
First connecting rod one end and the one 1/4 circular arc body are hinged, and the other end and some position of crank mechanism annulus are hinged, by connecting rod around
Annulus does Crankshaft motion, changes crankshaft pedestal and 1/4 circular arc body relative position, drives the folding of elastic base plate；Described second
Connecting rod one end and the 2nd 1/4 circular arc body are hinged, and the other end and some position of crank mechanism inner circle are hinged, by connecting rod around inner circle
Crankshaft motion is done, changes crankshaft pedestal and 1/4 circular arc body relative position, drives the folding of elastic base plate.
When the folding mechanism is folded outward bending, the first connecting rod and the second connecting rod are respectively the described 1st
Under the extruding of 4 circular arc bodies and the 2nd 1/4 circular arc body, band dynamic crankshaft annulus and inner circle are rotated respectively, and first connecting rod is around crankshaft annulus
Do Crankshaft motion, second connecting rod does Crankshaft motion around crankshaft inner circle so that the first main body second surface with the second main body
The distance of second surface reduces.
When folding mechanism expansion, the first connecting rod and the second connecting rod are in the one 1/4 circular arc body
Under stretching with the 2nd 1/4 circular arc body, band dynamic crankshaft annulus and inner circle are rotated respectively, and first connecting rod does crankshaft fortune around crankshaft annulus
Dynamic, second connecting rod does Crankshaft motion around crankshaft inner circle, so that the first main body second surface and the second main body second surface
Distance becomes larger, until the first main body first surface, the second main body first surface and crankshaft base bottom surface are in same plane.
Optionally, elastic base plate the first pliable region width is crankshaft pedestal and the first main body first surface the
One 1/4 circular arc body point of contact clear distances, elastic base plate the second pliable region width are crankshaft pedestal and the second main body first surface
In the 2nd 1/4 circular arc body point of contact clear distance.
Optionally, it is pressed in elastic base plate the first pliable region width range and the first pliable region width range
Arrange that hole, hole are arranged according to equilateral triangle according to blossom type.Hole diameter and hole spacing are according to selected elastic substrate material
Expect that performance test determines.
Optionally, when the stacked mechanism is folded outward bending or expansion, elastic base plate pliable region blossom type hole is inhaled
The small amount of deflection deformation of elastic base plate is received in receiving.
Optionally, the one 1/4 circular arc body of stacked mechanism is a quarter circle, and one end of the first main body is arranged in,
And it is tangent with the first main body first surface；2nd 1/4 circular arc body is a quarter circle, and one end of the second main body is arranged in, and
It is tangent with the second main body first surface；One 1/4 circular arc body and the 2nd 1/4 circular arc body, respectively and outside the first main body, the second main body
Shell is integrally formed.The radius of one 1/4 circular arc body and the 2nd 1/4 circular arc body is equal.
Optionally, the first connecting rod length and both ends and the articulated position of the one 1/4 circular arc body, crank mechanism annulus are answered
It is determined by calculation.Articulated position determines length of connecting rod.
Optionally, the second connecting rod length and both ends and the articulated position of the 2nd 1/4 circular arc body, crank mechanism inner circle are answered
It is determined by calculation.Articulated position determines length of connecting rod.
Optionally, there are two the elastic base plate pliable regions, the first pliable region of elastic base plate is in crankshaft pedestal
Outside and the first main body first surface are between 1/4 circular arc body point of contact, and the second pliable region of elastic base plate is outside crankshaft pedestal
Side and the second main body first surface are between 1/4 circular arc body point of contact.
Optionally, the crankshaft pedestal and the first main body first surface, the second main body first surface are pasted in elastic base plate
When, crankshaft pedestal and the first main body first surface are in 1/4 circular arc body point of contact clear distance, crankshaft pedestal and the second main body first surface
Meet following condition in 1/4 circular arc body point of contact clear distance:
L=(r+h)*3.14/2；
The L be the crankshaft pedestal and the first main body first surface 1/4 circular arc body point of contact clear distance, be equal to crankshaft pedestal and
For second main body first surface in 1/4 circular arc body point of contact clear distance, r is the one 1/4 circular arc body radius, the one 1/4 circular arc body
Equal with the radius of the 2nd 1/4 circular arc body, h is substrate thickness.
Optionally, crankshaft circle diameter meets following condition:
(H-r)×2≥D>(r+h)×3.14/2-r；
The D is the crankshaft circle diameter, and H is the thickness of first main body, the first body thickness and the second main body one
It causes, r is the 1/4 circular arc body radius, and the radius of the one 1/4 circular arc body and the 2nd 1/4 circular arc body is equal, and h is substrate thickness.
Optionally, crankshaft base bottom surface width meets following condition:
M=H×2-r×2 ；
The M is the crankshaft base bottom surface width, and H is the thickness of first main body, and the first body thickness is main with second
Body is consistent, and r is the one 1/4 circular arc body radius, and the radius of the one 1/4 circular arc body and the 2nd 1/4 circular arc body is equal.
The invention has the following advantages:
The present invention passes through the design of " Crankshaft motion ", and when foldable terminals are folded outward bending (backwards to bending), two connecting rods are with song
Axis annulus and inner circle do crankshaft operation, certain space are merged out in bending for flexible screen, uncompensation distance is realized backwards to bending；
When folding mechanism expansion, two connecting rods do crankshaft operation with crankshaft annulus and inner circle, mention upon deployment for flexible screen
For certain space, uncompensation distance realizes smooth expansion；The design entirety mechanical mechanism is simple, it can be achieved that property is strong, and manufacturing cost
It is low.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural schematic diagram that the present invention is folded outward warp architecture hinge component opening state；
Fig. 2 is the structural schematic diagram that the present invention is folded outward warp architecture hinge component folded closed state；
Fig. 3 is that the present invention is folded outward warp architecture hinge component mounting structure schematic diagram；
Fig. 4 is that blossom type arranges hole schematic diagram within the scope of inventive substrate pliable region；
In figure, 1, crankshaft annulus；2, first connecting rod；3, the one 1/4 circular arc body；5, crankshaft pedestal；7, elastic base plate；8, crankshaft axis
The heart；11, crankshaft inner circle；12, second connecting rod；13, the 2nd 1/4 circular arc body；21, gasket；22 gaskets.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The fold mechanism of flexible screen based on Crankshaft motion as shown in Figure 3, including including crankshaft pedestal 5, crankshaft circle
Ring 1, crankshaft inner circle 11, first connecting rod 2, second connecting rod 12, elastic base plate 7, with elastic base plate pliable region matched first
1/4 circular arc body 3 and the 2nd 1/4 circular arc body 13 and the first main body, the second main body, flexible screen；The elastic base plate includes two
A pliable region, the respectively region 7-1 and 7-2, elastic base plate first surface are pasted with flexible screen, the second table of elastic base plate
It is pasted with the first main body first surface, the second main body first surface, crankshaft base bottom surface in face；It is described with elastic base plate 7 can
Being bent the matched 1/4 circular arc body component of region 7-1 and 7-2 includes the one 1/4 circular arc body 3 and the 2nd 1/4 circular arc body 13, difference position
In one end of the first main body, the second main body end side；Described 2 one end of first connecting rod at position 200 with the one 1/4 circular arc body 3
Hinged in 30 positions, the other end is hinged in position 10 in position 20 and crank mechanism annulus 1, by first connecting rod 2 around annulus 1
Crankshaft motion is done, the relative position of crankshaft pedestal 5 and the one 1/4 circular arc body 3 is changed, drives the folding of elastic base plate 7；Described
12 one end of second connecting rod is hinged in position 130 in position 120 and the 2nd 1/4 circular arc body 13, and the other end is in position 1200 and crankshaft
Mechanism inner circle 11 is hinged in position 110, does Crankshaft motion around crank mechanism inner circle 11 by second connecting rod 12, changes crankshaft base
The 5 and the 2nd 1/4 circular arc body relative position of seat, drives the folding of elastic base plate 7.
When the folding mechanism is folded outward bending, the first connecting rod 2 and the second connecting rod 12 are the described 1st
Circular arc body 3, the 2nd 1/4 circular arc body 13 extruding under, band dynamic crankshaft annulus 1 and inner circle 11 rotate respectively, so that described first is main
Body second surface reduces with at a distance from the second main body second surface.
When folding mechanism expansion, the first connecting rod 2 and the second connecting rod 12 are the described 1st
Circular arc body 3, the 2nd 1/4 circular arc body 13 stretching under, band dynamic crankshaft annulus 1 and inner circle 11 rotate respectively, so that described first is main
Body second surface becomes larger at a distance from the second main body second surface, until the first main body first surface, the second main body first surface,
And crankshaft base bottom surface is in same plane.
Optionally, the elastic base plate pliable region 7-1 width is crankshaft pedestal 5 and the first main body first surface the
One 1/4 circular arc body point of contact clear distances；The elastic base plate pliable region 7-2 width is crankshaft pedestal 5 and the second main body first
Surface is in the 2nd 1/4 circular arc body point of contact clear distance.
Optionally, as shown in figure 4, according to blossom type cloth in elastic base plate pliable region 7-1 and the 7-2 width range
Hole is set, hole is arranged according to equilateral triangle.Hole diameter and hole spacing are according to selected elastic substrate material property testing
It determines.
Optionally, when the stacked mechanism is folded outward bending or expansion, 7 pliable region blossom type hole of elastic base plate is inhaled
The small amount of deflection deformation of elastic base plate is received in receiving.
Optionally, the one 1/4 circular arc body 3 of stacked mechanism is a quarter circle, and one end of the first main body is arranged in,
It is tangent with the first main body first surface；2nd 1/4 circular arc body 13 is a quarter circle, and one end of the second main body is arranged in, with
Second main body first surface is tangent；One 1/4 circular arc body, 3 radius and 13 radius of the 2nd 1/4 circular arc body are equal；One 1/4 circular arc
Body 3 and the 2nd 1/4 circular arc body 13 are integrally formed with the first main body, the second main body cover respectively.
Optionally, 2 length of first connecting rod and articulated position 20, articulated position 200 and the one 1/4 circular arc body hinge position
Setting 30, crank mechanism annulus, 1 articulated position 10 should be determined by calculation.Articulated position determines length of connecting rod, and articulated position is chosen
Improper, will lead to this fold mechanism can not be fully deployed.
Optionally, 12 length of second connecting rod and articulated position 120, articulated position 1200 and the 2nd 1/4 circular arc body are cut with scissors
Connect position 130,11 articulated position 110 of crank mechanism inner circle should be determined by calculation.Articulated position determines length of connecting rod, hinge position
Set choose it is improper, will lead to this fold mechanism can not be fully deployed.
It optionally, can be in second connecting rod when the first connecting rod 2 and second connecting rod 12 collide in folding process
12 articulated position 120, articulated position 1200 add gasket 21, gasket 22 respectively.
Optionally, 5 bottom surface of crankshaft pedestal and the first main body first surface, the second main body first surface are pasted in elasticity
When 7 second surface of substrate, crankshaft pedestal 5 and the first main body first surface are in 3 point of contact clear distance of the one 1/4 circular arc body, crankshaft base
Seat 5 and the second main body first surface in 13 point of contact clear distance of the 2nd 1/4 circular arc body meet following condition:
L=(r+h)*3.14/2；
The L is the crankshaft pedestal 5 and the first main body first surface in 3 point of contact clear distance of the one 1/4 circular arc body, crankshaft pedestal
5 and second main body first surface in 13 point of contact clear distance of the 2nd 1/4 circular arc body, r is the one 1/4 circular arc body radius, second
1/4 circular arc body radius is equal to the one 1/4 circular arc body radius, and h is the thickness of elastic base plate 7.
Optionally, 1 diameter of crankshaft annulus meets following condition:
(H-r)×2≥D>(r+h)×3.14/2-r；
The D is the diameter of the crankshaft annulus 1, and H is the thickness of first main body, the first body thickness and the second main body
Consistency of thickness, r are the one 1/4 circular arc body radius, and the 2nd 1/4 circular arc body radius is equal to the one 1/4 circular arc body radius, and h is
The thickness of elastic base plate 7.
Optionally, 5 bottom width of crankshaft pedestal meets following condition:
M=H×2-r×2；
The M is 5 bottom width of crankshaft pedestal, and H is the thickness of first main body, and the first body thickness is main with second
Body is consistent, and r is 3 radius of the one 1/4 circular arc body, and the radius of the one 1/4 circular arc body 3 and the 2nd 1/4 circular arc body 13 is equal.
The present invention passes through the design of " Crankshaft motion ", when foldable terminals are folded outward bending (backwards to bending), two connecting rods
Crankshaft operation is done with crankshaft annulus and inner circle, merges out certain space in bending for flexible screen, uncompensation distance is realized backwards to curved
Folding；When folding mechanism expansion, two connecting rods do crankshaft operation with crankshaft annulus and inner circle, upon deployment for flexible screen
Certain space is provided, uncompensation distance realizes smooth expansion；The design entirety mechanical mechanism is simple, it can be achieved that property is strong, and manufacture at
This is low.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (11)
1. a kind of flexible screen excurvation folding hinge structure based on Crankshaft motion, it is characterised in that: including crank mechanism, connecting rod,
Elastic base plate and the matched 1/4 circular arc body component of elastic base plate pliable region and the first main body, the second main body, flexibility
Screen；The crank mechanism includes at least one annulus, inner circle and pedestal；The connecting rod includes that first connecting rod and second connect
Bar；The elastic base plate includes two pliable regions, elastic base plate first surface and flexible screen paste, second surface with
First main body first surface, the second main body first surface, crankshaft base bottom surface are pasted；It is described with elastic base plate pliable region
Matched 1/4 circular arc body component includes the one 1/4 circular arc body and the 2nd 1/4 circular arc body, is located at the first main body, the second main body
One end of end side；Described first connecting rod one end and the one 1/4 circular arc body is hinged, the other end and some position of crank mechanism annulus
Hingedly, Crankshaft motion is done around annulus by connecting rod, changes crankshaft pedestal and 1/4 circular arc body relative position, drive elastic base plate
Folding；Described second connecting rod one end and the 2nd 1/4 circular arc body is hinged, and the other end and some position of crank mechanism inner circle are cut with scissors
It connects, Crankshaft motion is done around inner circle by connecting rod, changes crankshaft pedestal and 1/4 circular arc body relative position, drives elastic base plate
It folds.
2. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: described
Crank mechanism be that connecting rod around the axle center of crankshaft pedestal does Crankshaft motion.
3. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: described
Crankshaft be annulus around crankshaft pedestal axis rotation, inner circle.
4. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: described
First connecting rod and crankshaft annulus and the one 1/4 circular arc body take it is hinged link, the second connecting rod and crankshaft inner circle and the
2 1/4 circular arc bodies take hinged link.
5. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: described
It is tangent with matched one 1/4 circular arc body of elastic base plate pliable region and the first main body first surface, outside the first main body
Shell is integrally formed；2nd 1/4 circular arc body and the second main body first surface are tangent, are integrally formed with the second main body cover.
6. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: described
The one 1/4 circular arc body be a quarter circle, the 2nd 1/4 circular arc body be a quarter justify；One 1/4 circular arc body and second
The radius of 1/4 circular arc body, arc length are equal.
7. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: described
There are two elastic base plate pliable regions, and the first pliable region is in crankshaft pedestal lateral surface and the first main body first surface
Between one 1/4 circular arc body point of contacts, the second pliable region in crankshaft pedestal lateral surface and the second main body first surface the 2nd 1/4
Between circular arc body point of contact.
8. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: described
The width of the first pliable region of elastic base plate is equal to 1.571 times of the sum of the one 1/4 circular arc body radius and elastic base plate thickness,
The width of the second pliable region of elastic base plate is equal to 1.571 times of the sum of the 2nd 1/4 circular arc body radius and elastic base plate thickness.
9. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: described
Crankshaft base bottom surface width is equal to the thickness of the first main body and the sum of second body thickness subtracts the one 1/4 circular arc body radius and the
The sum of 2 1/4 circular arc body radiuses.
10. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: institute
It states in elastic base plate pliable region width range and arranges that hole, hole are arranged according to equilateral triangle according to blossom type.
11. a kind of fold mechanism of flexible screen based on Crankshaft motion according to claim 1, it is characterised in that: institute
Crankshaft circle diameter is stated less than or equal to crankshaft base bottom surface width, greater than 1.571 times of elastic base plate thickness with the one 1/4 circular arc
0.571 times of difference of body radius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910136230.3A CN109788095A (en) | 2019-02-25 | 2019-02-25 | A kind of flexible screen excurvation folding hinge structure based on Crankshaft motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910136230.3A CN109788095A (en) | 2019-02-25 | 2019-02-25 | A kind of flexible screen excurvation folding hinge structure based on Crankshaft motion |
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| CN109788095A true CN109788095A (en) | 2019-05-21 |
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ID=66486962
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|---|---|---|---|
| CN201910136230.3A Pending CN109788095A (en) | 2019-02-25 | 2019-02-25 | A kind of flexible screen excurvation folding hinge structure based on Crankshaft motion |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401748A (en) * | 2019-07-26 | 2019-11-01 | 昆山工研院新型平板显示技术中心有限公司 | A kind of folding device and Foldable display device |
| CN111240413A (en) * | 2020-01-16 | 2020-06-05 | 京东方科技集团股份有限公司 | Electronic device |
-
2019
- 2019-02-25 CN CN201910136230.3A patent/CN109788095A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401748A (en) * | 2019-07-26 | 2019-11-01 | 昆山工研院新型平板显示技术中心有限公司 | A kind of folding device and Foldable display device |
| CN111240413A (en) * | 2020-01-16 | 2020-06-05 | 京东方科技集团股份有限公司 | Electronic device |
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Application publication date: 20190521 |
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