CN113990204A - Curling mechanism and display device - Google Patents
Curling mechanism and display device Download PDFInfo
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- CN113990204A CN113990204A CN202111396547.4A CN202111396547A CN113990204A CN 113990204 A CN113990204 A CN 113990204A CN 202111396547 A CN202111396547 A CN 202111396547A CN 113990204 A CN113990204 A CN 113990204A
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- 230000008093 supporting effect Effects 0.000 claims abstract description 44
- 230000002093 peripheral effect Effects 0.000 claims abstract description 42
- 238000004804 winding Methods 0.000 claims abstract description 14
- 238000002788 crimping Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 9
- 230000007704 transition Effects 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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Abstract
The application provides a curling mechanism and a display device, relates to the technical field of display, and is used for solving the technical problem that when a flexible screen is wound to a scroll, a display surface of the flexible screen is abraded due to friction; the reel comprises a reel body part and bearing parts positioned at two ends of the reel body part; the bearing part is provided with a plurality of annular steps which are coaxial with the shaft body part on one side facing the shaft body part, and the radial dimension of the periphery of each annular step in the same bearing part is reduced in a step manner along the direction of the bearing part facing the shaft body part; the flexible supporting plate is used for installing a crimpable object, one end of the flexible supporting plate is connected to the shaft body, the flexible supporting plate can be wound into a plurality of circles, the innermost circle of the plurality of circles is wound on the outer peripheral surface of the shaft body, the rest outer circles are sequentially wound on the outer peripheral surface of each annular step, and a gap is formed between any two adjacent circles of the flexible supporting plates. The curling mechanism provided by the embodiment of the application is used for winding the flexible screen.
Description
Technical Field
The application relates to the technical field of display, in particular to a curling mechanism and a display device.
Background
The flexible screen has the advantages of being bendable, convenient to curl, easy to store and carry, and gradually becomes one of important research directions of display products, such as a scroll display device. Currently, a roll-to-roll display device includes a flexible screen and a roll, and the flexible screen can be wound on the roll. When the flexible screen needs to be used, the flexible screen can be unfolded, and the flexible screen is wound on the reel after the flexible screen is used, so that the occupied space of the flexible screen is reduced. However, when the flexible screen is unfolded or wound, the display surface of the flexible screen is inevitably rubbed, so that the display effect is affected due to abrasion.
Disclosure of Invention
In view of the above problem, the embodiment of the application provides a curling mechanism and a display device, when utilizing the curling mechanism to wind a flexible display screen, the display surface abrasion of the flexible display screen can be avoided, and the display effect is improved.
In order to achieve the above object, the embodiments of the present application provide the following technical solutions:
in a first aspect, embodiments of the present application provide a crimping mechanism, including a reel and a flexible support plate; the reel comprises a reel body part and bearing parts positioned at two ends of the reel body part; the bearing part is provided with a plurality of annular steps which are coaxial with the shaft body part on one side facing the shaft body part, and the radial dimension of the periphery of each annular step in the same bearing part is reduced in a stepped manner along the direction of the bearing part facing the shaft body part; the flexible supporting plate is used for installing a crimpable object, one end of the flexible supporting plate is connected to the shaft body portion, the flexible supporting plate can be wound into a plurality of circles, the innermost circle of the plurality of circles is wound on the outer peripheral surface of the shaft body portion, the rest outer circles are sequentially wound on the outer peripheral surface of the annular steps, and a gap is formed between any two adjacent circles of the flexible supporting plate.
In an alternative embodiment, the sum of the thicknesses of the flexible support plate and the crimpable object is H1(ii) a A radius difference H between an outer periphery of the shaft portion and an outer periphery of the annular step closest thereto2The difference H of the radii of the peripheries of two adjacent annular steps3(ii) a Wherein H2Greater than H1，H3Greater than H1。
In an alternative embodiment, the H3Greater than or equal to H2And the radius difference value H of the peripheries of any two adjacent annular steps3Are all equal.
In an alternative embodiment, in the curling direction of the flexible supporting plate, the flexible supporting plate is divided into a plurality of sub-supporting parts, and the width of each sub-supporting part is gradually increased; wherein the sub-support adjacent to the shaft portion is wound around the shaft portion; and the rest of the sub-supporting parts are sequentially wound on the annular steps.
In an alternative embodiment, the width of the sub-support portion forming the innermost circumference of the flexible support plate is smaller than the width of the shaft portion in the axial direction of the shaft portion; the width of the sub-support part wound on each annular step is smaller than the maximum width between the outer sides of the two corresponding annular steps and larger than the minimum width between the inner sides of the two corresponding annular steps.
In an alternative embodiment, the outer circumferential surface of the annular step is provided with a positioning protrusion; the flexible support plate is provided with a positioning groove or a positioning hole matched with the positioning bulge, and the positioning groove or the positioning hole is positioned in the area of the flexible support plate corresponding to the annular step.
In an alternative embodiment, in the plurality of turns formed by winding the flexible supporting plate, the positioning protrusion is located on the outer peripheral surface of the annular step corresponding to the starting position of the next turn in two adjacent turns; preferably, the positioning protrusion is a rectangular block.
In an optional embodiment, the shaft body is cylindrical, the bearing portion includes a plurality of circular steps, and the circular steps are symmetrically disposed at two ends of the shaft body.
In a second aspect, an embodiment of the present application provides a display device, which includes a flexible screen and the curling mechanism of the first aspect; the back side of the flexible screen is connected to the flexible support plate of the curling mechanism and can curl with the flexible support plate.
In an alternative embodiment, the display device further comprises a receiving case; one end of the flexible supporting plate is connected in the accommodating shell, and the other end of the flexible supporting plate is connected to the shaft part; the receiving case is provided with a recess engaged with the reel to form a receiving space.
Compared with the related art, the curling mechanism and the display device provided by the embodiment of the application have the following advantages;
the curling mechanism and the display device provided by the embodiment of the application are characterized in that the curling mechanism is used for winding the flexible screen; the curling mechanism comprises a shaft body part and bearing parts positioned at two ends of the shaft body part, and one side of each bearing part, which faces the shaft body part, is provided with an annular step which is coaxial with the shaft body part; and the radial dimension of the outer periphery of each annular step in the same supporting part is reduced in a stepwise manner along the direction from the shaft body part to the bearing part.
When the flexible screen is wound by the winding mechanism, the back surface of the flexible screen is arranged on the flexible support plate and can be wound along with the flexible support plate; when the flexible support plate is wound on a reel, it may be wound in a plurality of turns; the display screen is characterized in that the innermost ring of the multiple rings is wound on the outer peripheral surface of the shaft body, the rest outer rings are sequentially wound on the outer peripheral surfaces of the corresponding annular steps, and a gap is kept between the flexible support plates of any two adjacent rings, so that a gap is formed between the display surface of the flexible screen positioned at the inner ring and the flexible support plates positioned at the outer rings.
With flexible screen among the correlation technique around into many circles on the spool, the laminating is in the same place between the adjacent circle to when launching or curling flexible screen, there is friction between the adjacent circle and leads to the scheme of the display surface wearing and tearing of flexible screen to compare, in this application embodiment in arbitrary two circles, be located the display surface of the flexible screen of inner circle and be located the flexible backup pad of outer lane between have the clearance, can prevent the display surface and the flexible backup pad contact of flexible screen, thereby avoid the display surface wearing and tearing of flexible screen, promote display effect.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a front view of a spool provided by an embodiment of the present application;
fig. 2 is a schematic connection diagram of a flexible supporting plate and a flexible screen provided in an embodiment of the present application;
FIG. 3 is a first schematic view illustrating a state in which a flexible supporting board is wound around a reel according to an embodiment of the present disclosure;
fig. 4 is a schematic view illustrating a state in which the flexible supporting plate is wound around the reel according to the embodiment of the present application;
FIG. 5 is an enlarged view of the point B in FIG. 4;
fig. 6 is a sectional view taken along line a-a in fig. 1.
Description of reference numerals:
10-a shaft portion;
20-a carrier; 21-a first step; 211-a first positioning projection; 22-a second step; 221-a second positioning projection; 23-a third step;
30-a flexible screen;
40-a flexible support plate;
41-a first sub-support; 42-a second sub-support; 421-a first positioning groove; 43-a third sub-support; 431-second detent.
Detailed Description
As described in the background art, the roll display device of the related art includes a roll and a flexible screen, and the flexible screen is worn when wound on the roll, and the applicant has found that the problem occurs because the flexible screen can be wound on the roll in a plurality of turns and adjacent turns are attached to each other. When the flexible screen is unfolded or curled, a pulling force needs to be applied to the flexible screen, and friction exists between the display surface of the flexible screen located at the inner ring and the back side of the flexible screen located at the outer ring, so that the display surface of the flexible screen is abraded due to friction, and the display effect of the flexible screen is influenced.
In view of the above technical problems, embodiments of the present application provide a curling mechanism and a display device, where the curling mechanism is used to wind a flexible screen; the curling mechanism comprises a scroll and a flexible support plate; the scroll comprises a shaft body part and supporting parts positioned at two ends of the shaft body part, and one sides of the supporting parts facing the shaft body part are provided with annular steps which are coaxial with the shaft body part; and the outer diameter of the outer peripheral surface of each annular step in the same support portion is reduced stepwise in the direction from the shaft body portion to the support portion.
Further, when the flexible screen is wound by the winding mechanism, the flexible screen is disposed on the flexible support plate and can be wound along with the flexible support plate. The flexible support plate may be wound around the spool in a plurality of turns; the innermost ring of the flexible supporting plate is wound on the outer peripheral surface of the shaft body part, the rest outer rings are sequentially wound on the outer peripheral surfaces of the corresponding annular steps, and a gap is formed between the display surface of the flexible screen positioned on the inner ring and the flexible supporting plate positioned on the outer ring in any two rings. So set up, can prevent the display surface and the flexible support board contact of flexible screen to avoid the display surface wearing and tearing of flexible screen, promote the display effect.
In order to make the aforementioned objects, features and advantages of the embodiments of the present application more comprehensible, embodiments of the present application are described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the present application and not all 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 application.
As shown in fig. 1 to 4, the display device provided by the embodiment of the present application may be a scroll type display device including a curling mechanism for winding a rollable object. For example, the rollable object may be the flexible screen 30, i.e. the rolling mechanism is used to roll the flexible screen 30. When it is desired to curl the flexible screen 30, the back side of the flexible screen 30 is attached to the curling mechanism and can be rolled into multiple turns with the curling mechanism, thereby reducing the footprint of the flexible screen 30.
The present embodiment provides a winding mechanism comprising a reel (not shown) and a flexible support plate 40, wherein the flexible support plate 40 is used for carrying the flexible screen 30, one end of the flexible support plate 40 can be connected to the reel, and the flexible support plate 40 can be wound on the reel and can be wound into a plurality of turns. Further, the back side of the flexible screen 30 may be adhered to the flexible support plate 40 and can be rolled along with the flexible support plate 40 to achieve winding of the flexible screen 30 on a reel, reducing the occupied space of the flexible screen 30.
Referring to fig. 1, the reel provided in the present embodiment includes a shaft portion 10 and two bearing portions 20, wherein the two bearing portions 20 are disposed at two ends of the shaft portion 10. For example, the shaft portion 10 has a circular or regular hexagonal cross section. Preferably, the shaft body 10 is a cylindrical rod body, the cross section of which is circular; the two bearing parts 20 are respectively arranged at two ends of the shaft body part 10; in order to facilitate the winding of the flexible support plate 40 and control the edge of the flexible support plate 40 to keep a space with the bearing part 20, and avoid the edge of the flexible support plate 40 contacting the side of the bearing part 20, two bearing parts 20 may be symmetrically disposed at both ends of the shaft body part 10.
Each bearing part 20 comprises a plurality of annular steps, and the annular steps can be circular annular steps or hexagonal steps, and if the annular steps are hexagonal steps, the two adjacent edges can be smoothly transited through circular arcs. Preferably, the annular step in the bearing part 20 is an annular step, so that when the flexible support plate 40 is wound on the annular step, the stress of the flexible support plate 40 on the annular step can be reduced, and the flexible screen 30 on the flexible support plate 40 is prevented from being damaged due to the large stress.
For convenience of describing the present embodiment, the bearing part 20 includes a plurality of circular steps, and each circular step may be disposed coaxially with the shaft body 10. In the direction of the support portion 20 toward the shaft portion 10, a plurality of annular steps located in the same bearing portion 20 are sequentially arranged on the side of the bearing portion 20 toward the shaft portion 10, and the radial dimension of the outer peripheral surface of each annular step is reduced stepwise.
For example, in one embodiment, the shaft portion 10 and the bearing portion 20 may be a unitary structure, i.e., circular steps with different diameters may be formed at two ends of a cylindrical rod body to form the bearing portion 20. Alternatively, in another embodiment, the shaft portion 10 and the bearing portion 20 may be a split structure, the circular steps may be disks with a certain thickness, each disk has a different diameter, and a plurality of disks with different diameters may be selectively sleeved on the end of the cylindrical rod body in the order from small to large according to the number of winding turns of the flexible supporting plate 40 on the winding shaft, so as to form the stepped bearing portion 20 at the end of the cylindrical rod body.
Referring to fig. 2, in the embodiment of the present invention, the flexible supporting plate 40 can cover the whole back side of the flexible screen 30, so as to improve the supporting effect of the flexible screen 30. The flexible support plate 40 may be a thin support panel made of stainless steel, titanium metal, or an alloy material, and the support panel is patterned. For example, the support panel may be uniformly provided with a plurality of through holes, so that the support panel can have a certain flexibility and can be curled while ensuring the support effect of the support panel on the flexible screen 30.
One end of the flexible support plate 40 is connected with the shaft body part 10 of the scroll, and the flexible support plate 40 can be wound into a plurality of circles along with the rotation of the scroll; among the turns of the flexible support plate 40, the first turn may be defined as the innermost turn and the other turns starting from the second turn may be defined as the outer turns. The innermost ring of the flexible support plate 40 is wound around the outer circumferential surface of the shaft portion 10, and the remaining outer rings are sequentially wound around the outer circumferential surfaces of the annular steps.
The diameter of the outer peripheral surface of each circular arc step in the same bearing part 20 is increased in a stepwise manner in the direction from the shaft part 10 to the bearing part 20; meanwhile, the diameter of the outer peripheral surface of the shaft portion 10 is also smaller than the diameter of the outer peripheral surface of the circular arc step closest thereto. When the flexible support plates 40 are wound on the reel and wound into a plurality of turns, a gap may be provided between any two adjacent turns of the flexible support plates 40, so that a gap is provided between the display surface of the flexible screen 30 located at the inner turn and the flexible support plate 40 located at the outer turn adjacent thereto. So set up, when launching or curling flexible screen 30, can prevent that the display surface of flexible screen 30 from contacting with flexible supporting plate 40 to avoid the display surface wearing and tearing of flexible screen 30, promote the display effect.
For convenience of describing the present embodiment, the present embodiment is described by taking an example in which the flexible support plate 40 is wound on a reel for three turns.
As shown in fig. 2 and 3, the flexible support plate 40 includes a first sub-support 41, a second sub-support 42, and a third sub-support 43, which are arranged in this order, in the expanding direction (Y-axis direction in the drawing) of the flexible support plate 40; wherein, when the flexible support plate 40 is wound on the reel, the first sub-support 41 is wound in a first turn, which is the innermost turn and corresponds to the portion from the point a to the point b in the flexible support plate 40; the second sub-support 42 is wound into a second turn, the second turn being located outside the first turn, the second turn being an outer turn of the first turn 41, which corresponds to a portion from point b to point c in the flexible support plate 40; the third sub-support 43 is wound in a third turn, which is located outside the second turn, and the third turn 43 is the outermost turn, which corresponds to the portion from point c to point d in the flexible support plate 40.
As shown in fig. 4, the carrying portion 20 includes three circular steps, the circular step corresponding to the second sub-supporting portion 42 can be defined as a first step 21, the circular step corresponding to the third sub-supporting portion 43 can be defined as a second step 22, and the next circular step of the second step 22 is a third step 23; wherein the first sub-support 41 is wound on the outer circumferential surface of the shaft portion 10, the second sub-support 42 is wound on the outer circumferential surface of the first step 21, and the third sub-support 43 is wound on the outer circumferential surface of the second step 22.
A gap is formed between the second turn formed by winding the second sub-support portion 42 and the first turn formed by winding the first sub-support portion 41, so that a gap is formed between the display surface of the flexible screen 30 positioned on the first sub-support portion 41 and the second sub-support portion 42, and the phenomenon that the display surface of the flexible screen 30 positioned on the first sub-support portion 41 is abraded due to friction when the flexible screen 30 is unfolded or curled can be avoided.
Similarly, a gap is formed between the third coil wound by the third sub-support portion 43 of the flexible support plate 40 and the second coil wound by the second sub-support portion 42, so that a gap is formed between the display surface of the flexible screen 30 positioned on the second sub-support portion 42 and the third sub-support portion 43, and the phenomenon that the display surface of the flexible screen 30 positioned on the second sub-support portion 42 is abraded due to friction when the flexible screen 30 is unfolded or curled can be avoided.
In the embodiment of the present application, the width of the first sub-support 41 is smaller than the width of the shaft portion 10 in the axial direction of the shaft portion 10; the width of the other sub-supporting parts is smaller than the maximum width between the two corresponding circular steps and larger than the minimum width between the two corresponding circular steps.
Specifically, the width X of the first sub-support 41 is along the axial direction of the shaft body 10 (i.e., the X-axis direction in the drawing)1Width X of the second sub-supporting part 422Width X of the third sub-support 433Increasing in a stepwise manner. Wherein the width X of the first sub-support 411Is smaller than the width L of the shaft portion 101So that the first sub-support 41 can be wound on the outer circumferential surface of the shaft portion 10.
Likewise, the width X of the second sub-support 422Less than the maximum between two first steps 21Width L2And is greater than the minimum width L between the two first steps 211So that the second sub-support 42 can be wound on the outer circumferential surface of the first step 21. Width X of the third sub-support 433Less than the maximum width L between the two second steps 223And is greater than the minimum width L between the two second steps 222So that the second sub-support 42 can be wound on the outer circumferential surface of the third step.
It should be noted that, a certain transition length is required to be set at the joint between any two rings of the flexible supporting plate 40, so as to ensure that the outer rings of the flexible supporting plate 40 are smoothly wound on the corresponding annular steps.
For example, the length Y of the first sub-support 411Generally greater than the circumference of the outer circumferential surface of the shaft portion 10 to compensate for the transition length between the first and second sub-supports 41 and 42 so that the second sub-support 42 can be wound on the outer circumferential surface of the first step 21; length Y of the second sub-support 422It is required to be greater than the circumference of the outer circumferential surface of the first step 21 to compensate for the transition length of the second sub-support 42 and the third sub-support 43 so that the third sub-support 43 can be wound on the outer circumferential surface of the second step 22.
Likewise, the length Y of the third sub-support 433Needs to be larger than the perimeter of the outer circumferential surface of the second step 22 to compensate the transition length of the third sub-support 43 and the next turn thereof, so that the next turn can be wound on the outer circumferential surface of the third step 23; by analogy, the length of the next circle in the unfolding direction of the flexible supporting plate 40 is greater than the length of the outer peripheral surface of the previous step of the corresponding step.
As shown in fig. 5, the total thickness of the flexible supporting plate 40 and the flexible screen 30 is H1I.e. the sum of the thickness of the flexible support plate 40, the thickness of the flexible screen 30 and the thickness of the adhesive layer therebetween is H1The difference in radius between the outer peripheral surface of the shaft body 10 and the outer peripheral surface of the annular step closest thereto is H2Radius difference H between the outer peripheral surfaces of any two circular steps3Wherein H is3Greater than H1And H is2Greater than H1To ensure the flexibilityWhen the supporting plate 40 is wound on the reel, a gap is formed between the display surface of the flexible screen 30 positioned at the inner circle and the flexible supporting plate 40 positioned at the outer circle in any two circles.
For example, the first sub-support 41 is wound around the outer peripheral surface of the shaft portion 10, and the thickness of the flexible support plate 40 bonded to the flexible panel 30 is H1The difference in radius between the outer peripheral surface of the shaft body 10 and the outer peripheral surface of the first step 21 is H2And H is2Greater than H1. The second sub-support portion 42 of the flexible support plate 40 is wound around the outer circumferential surface of the first step 21, and the difference between the radii of the outer circumferential surface of the first step 21 and the outer circumferential surface of the second step 22 is H3And H is3Greater than H1(ii) a The third sub-support 43 is wound around the outer circumferential surface of the second step 22, and the difference in radius between the outer circumferential surface of the second step 22 and the outer circumferential surface of the third step 23 is H3And H is3Greater than H1。
With this arrangement, when the flexible support plate 40 is wound on the reel for multiple turns, a gap is formed between the second turn formed by the second sub-support 42 and the display surface of the flexible screen 30 located on the first turn formed by the first sub-support 41, so as to avoid the occurrence of the phenomenon that the display surface of the flexible screen 30 located on the first sub-support 41 is worn due to friction when the flexible screen 30 is unfolded or wound; similarly, a gap is formed between the third loop formed by the third sub-supporting portion 43 and the display surface of the flexible screen 30 on the second loop formed by the second sub-supporting portion 42, so that the phenomenon that the display surface of the flexible screen 30 on the second sub-supporting portion 42 is abraded due to friction when the flexible screen 30 is unfolded or curled can be avoided.
The difference H in radius between the outer peripheral surface of the shaft portion 10 and the outer peripheral surface of the first step 21 is2Equal to the difference H between the radii of the outer peripheral surface of the first step 21 and the outer peripheral surface of the second step 223I.e. H2＝H3(ii) a Alternatively, the difference H in radius between the outer peripheral surface of the shaft portion 10 and the outer peripheral surface of the first step 212Is smaller than the radius difference H between the outer peripheral surface of the first step 21 and the outer peripheral surface of the second step 223I.e. H1＜H2＜H3。
Further, the difference H in radius between the outer peripheral surface of the second step 22 and the outer peripheral surface of the third step 233May be greater than or equal to the radius difference H between the outer peripheral surface of the first step 21 and the outer peripheral surface of the second step 223That is, the difference between the radii of any two adjacent circular steps may be equal or gradually increased, which is not limited in this embodiment.
Preferably, the difference between the radii of any two adjacent circular steps may be equal, and equal to the difference between the radii of the outer circumferential surface of the shaft body portion 10 and the outer circumferential surface of the first step 21. The arrangement is convenient for optimizing the transition length between the adjacent rings, so that the outer ring is easy to wind on the peripheral surface of the circular step.
As shown in fig. 6, in the embodiment of the present invention, a positioning protrusion is disposed on an outer circumferential surface of each circular step, and a positioning groove engaged with the positioning protrusion is disposed at a portion of the flexible supporting plate 40 contacting with the circular step. Along the axial of axis body portion 10, the constant head tank is close to the edge setting of flexible support plate 40, and the one end notch of constant head tank can extend to the edge of flexible support plate 40 to when making flexible support plate 40 convolute to the outer peripheral face of corresponding ring shape step, the constant head tank can with the protruding joint of location, in order to prevent that flexible support plate 40 from sliding on the outer peripheral face of ring shape step, prevent that it is not hard up after convoluteing, contact and production friction between the adjacent circle.
With reference to fig. 2, the positioning protrusion may be a rectangular block disposed on the outer circumferential surface of the circular step, and the length direction of the positioning protrusion is consistent with the axial direction of the circular step, that is, the length direction of the rectangular block is consistent with the axial direction of the circular step, or the length direction of the rectangular block is consistent with the surface width direction of the outer circumferential surface (annular surface) of the circular step; correspondingly, the constant head tank is the rectangular channel with rectangular block complex, and the length direction of rectangular channel is unanimous with flexible backup pad X direction.
It can be understood that the positioning protrusion may be disposed along the circumferential direction of the outer circumferential surface of the circular step, that is, the length direction of the positioning protrusion extends along the circumferential direction of the outer circumferential surface of the circular step, in which case the length direction of the positioning groove disposed on the flexible support plate is consistent with the Y direction of the flexible support plate. It should be noted that, the positioning protrusion may be disposed at any position on the outer circumferential surface of the circular step as required, and the flexible support plate 40 may further be provided with a positioning hole instead of the positioning groove, which is not limited in this embodiment as long as the flexible support plate 40 can be clamped with the positioning protrusion.
In some embodiments, the positioning protrusion is located on the outer circumferential surface of the step corresponding to the starting position of the next turn of the adjacent two turns among the turns of the flexible supporting plate 40; namely, in any two adjacent rings, the positioning bulge is positioned on the outer peripheral surface of the circular step corresponding to the initial position of the outer ring.
For example, in the outer ring of the flexible supporting plate 40 adjacent to the innermost ring, the positioning protrusion may be disposed on the outer peripheral surface of the circular step corresponding to the starting position of the outer ring; in any outer ring next to the outer ring, the positioning protrusion may be located on the outer circumferential surface of the circular step corresponding to the starting position of the next outer ring.
Exemplarily, in the first sub-support 41 and the second sub-support 42, a first positioning protrusion 211 is provided at a position of the first step 21 corresponding to a starting position of the second sub-support 42, and the second sub-support 42 is provided at the starting position thereof with a first positioning groove 421 matching with the first positioning protrusion 211, so that the second sub-support 42 can be not only clamped to the first positioning protrusion 211 through the first positioning groove 421, but also prevented from sliding on the outer circumferential surface of the first step 21; and it is possible to ensure that the tensile force applied to the first turn formed by the first sub-support 41 is equal to the tensile force applied to the second turn formed by the second sub-support 42 when the flexible support plate 40 is wound or unwound.
Similarly, between the second sub-supporting part 42 and the third sub-supporting part 43, a second positioning protrusion 221 is provided at a position of the second step 22 corresponding to the starting position of the third sub-supporting part 43, and the third sub-supporting part 43 is provided at the starting position thereof with a second positioning groove 431 engaged with the second positioning protrusion 221; with this arrangement, not only can the third sub-support 43 be snapped onto the second positioning protrusion 221 through the second positioning groove 431, but also the second sub-support 43 is prevented from sliding on the outer circumferential surface of the second step 22; and it is possible to ensure that the pulling force applied to the third turn formed by the third sub-support 42 is equal to the pulling force applied to the second turn formed by the second sub-support 42 when the flexible support plate 40 is wound or unwound.
So set up, can guarantee to apply to the tensile force on flexible supporting plate 40 invariably, can not be along with the increase of the number of turns, the tensile force that its outermost circle bore is greater than the tensile force of innermost circle, prevents that flexible screen 30 from leading to the damage because of the atress is too big.
It can be understood that the display device provided by the embodiment further includes a housing, the housing is used for housing the reel and the flexible screen 30, one side of the housing facing the reel is provided with a recess, and a housing space for housing the reel is formed; one end of the flexible support plate 40 may be connected to the shaft body portion 10 of the reel, and the other end of the flexible support plate 40 may be connected to the receiving case. When the flexible screen 30 is required, the reel of the display device may be pulled out toward the side away from the storage case, so that the flexible screen 30 may be unwound.
After use, the flexible support plate 40 may be rolled and wound onto a spool, with the flexible support plate 40 wound in multiple turns. In any two circles, a gap is formed between the display surface of the flexible screen 30 located at the inner circle and the flexible support plate 40 located at the outer circle, so that the display surface of the flexible screen 30 can be prevented from contacting the flexible support plate 40, the display surface of the flexible screen 30 is prevented from being abraded, and the display effect is improved.
The embodiments or implementation modes in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
In general, terms should be understood at least in part by their use in context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in the singular or may be used to describe a combination of features, structures, or characteristics in the plural, depending, at least in part, on the context. Similarly, terms such as "a" or "the" may also be understood to convey a singular use or to convey a plural use, depending at least in part on the context.
It should be readily understood that "on … …", "above … …" and "above … …" in this disclosure should be interpreted in its broadest sense such that "on … …" means not only "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above … …" or "above … …" includes not only the meaning of "above something" or "above" but also includes the meaning of "above something" or "above" with no intervening features or layers therebetween (i.e., directly on something).
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A crimping mechanism is characterized by comprising a reel and a flexible support plate;
the reel comprises a reel body part and bearing parts positioned at two ends of the reel body part;
the bearing part is provided with a plurality of annular steps which are coaxial with the shaft body part on one side facing the shaft body part, and the radial dimension of the periphery of each annular step in the same bearing part is reduced in a stepped manner along the direction of the bearing part facing the shaft body part;
the flexible supporting plate is used for installing a crimpable object, one end of the flexible supporting plate is connected to the shaft body portion, the flexible supporting plate can be wound into a plurality of circles, the innermost circle of the plurality of circles is wound on the outer peripheral surface of the shaft body portion, the rest outer circles are sequentially wound on the outer peripheral surface of the annular steps, and a gap is formed between any two adjacent circles of the flexible supporting plate.
2. The crimping mechanism of claim 1 wherein the sum of the thickness of the flexible support plate and the crimpable object is H1；
A radius difference H between an outer periphery of the shaft portion and an outer periphery of the annular step closest thereto2The difference H of the radii of the peripheries of two adjacent annular steps3；
Wherein H2Greater than H1，H3Greater than H1。
3. The crimping mechanism of claim 2, wherein the H is3Greater than or equal to H2And the radius difference value H of the peripheries of any two adjacent annular steps3Are all equal.
4. The crimping mechanism according to claim 1, wherein the flexible support plate is divided into a plurality of sub-support portions in a crimping direction of the flexible support plate, and a width of each of the sub-support portions is gradually increased;
wherein the sub-support adjacent to the shaft portion is wound around the shaft portion; and the rest of the sub-supporting parts are sequentially wound on the annular steps.
5. The crimping mechanism according to claim 4, wherein a width of the sub-support portion forming an innermost circle of the flexible support plate is smaller than a width of the shaft portion in an axial direction of the shaft portion;
the width of the sub-support part wound on each annular step is smaller than the maximum width between the outer sides of the two corresponding annular steps and larger than the minimum width between the inner sides of the two corresponding annular steps.
6. The crimping mechanism according to any one of claims 1 to 5, wherein a positioning projection is provided on an outer peripheral surface of the annular step;
the flexible support plate is provided with a positioning groove or a positioning hole matched with the positioning bulge, and the positioning groove or the positioning hole is positioned in the area of the flexible support plate corresponding to the annular step.
7. The crimping mechanism of claim 6,
in the multiple circles formed by winding the flexible supporting plate, the positioning bulge is positioned on the outer peripheral surface of the annular step corresponding to the starting position of the next circle in two adjacent circles;
preferably, the positioning protrusion is a rectangular block.
8. The crimping mechanism of claim 1 wherein the shaft portion is generally cylindrical, and the carrier portion includes a plurality of annular steps symmetrically disposed at opposite ends of the shaft portion.
9. A display device comprising a flexible screen and the curling mechanism of any of claims 1 to 8;
the back side of the flexible screen is connected to the flexible support plate of the curling mechanism and can curl with the flexible support plate.
10. The display device according to claim 9, further comprising a receiving case;
one end of the flexible supporting plate is connected in the accommodating shell, and the other end of the flexible supporting plate is connected to the shaft part;
the receiving case is provided with a recess engaged with the reel to form a receiving space.
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| CN202111396547.4A CN113990204B (en) | 2021-11-23 | 2021-11-23 | Crimping mechanism and display device |
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| CN202111396547.4A CN113990204B (en) | 2021-11-23 | 2021-11-23 | Crimping mechanism and display device |
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| CN113990204A true CN113990204A (en) | 2022-01-28 |
| CN113990204B CN113990204B (en) | 2023-12-19 |
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| CN113990204B (en) | 2023-12-19 |
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