CN112762085A - Rotating shaft assembly and display device - Google Patents
Rotating shaft assembly and display device Download PDFInfo
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- CN112762085A CN112762085A CN202011439130.7A CN202011439130A CN112762085A CN 112762085 A CN112762085 A CN 112762085A CN 202011439130 A CN202011439130 A CN 202011439130A CN 112762085 A CN112762085 A CN 112762085A
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- Prior art keywords
- central shaft
- flexible screen
- splicing
- blocks
- splicing blocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
- B65H75/24—Constructional details adjustable in configuration, e.g. expansible
- B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/04—Kinds or types
- B65H75/08—Kinds or types of circular or polygonal cross-section
- B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/18—Constructional details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
- F16C3/023—Shafts; Axles made of several parts, e.g. by welding
Abstract
The application discloses pivot subassembly and display device belongs to and shows technical field. The rotating shaft assembly comprises a central shaft, a plurality of splicing blocks, a plurality of first connecting pieces and a first driving piece; the splicing blocks are circumferentially arranged around the central shaft, each splicing block corresponds to at least one first connecting piece, one end of each first connecting piece is connected to the central shaft, the other end of each first connecting piece is connected to one side, facing the central shaft, of each splicing block, the first connecting pieces can radially stretch along the central shaft so that the distance between each splicing block and the central shaft can be changed, and the first driving piece is used for driving the first connecting pieces to stretch. Therefore, the distances between the splicing blocks near the winding starting point of the flexible screen and the central shaft are gradually changed, the curvature radius of the flexible screen which belongs to the same circle is gradually changed near the winding starting point, the outer ring flexible screen is smoothly wound to the inner ring flexible screen, stress concentration in the flexible screen when the inner ring and the outer ring are overlapped is reduced, and the service life of the flexible screen is prolonged.
Description
Technical Field
The application relates to the technical field of display, in particular to a rotating shaft assembly and a display device.
Background
At present, with the continuous evolution of high screen occupation ratio and large screen of terminal products such as mobile phones and flat panels, the demands of consumers are changed, and not only a large screen is required, but also the flexible screen which can be curled on a rotating shaft is favored, so that the flexible screen is one of the development trends of the future display industry. When the flexible screen starts to be wound on the rotating shaft layer by layer from the winding starting point, the overlapping of the outer screen and the inner screen at the winding starting point forms the sudden change of the screen thickness, so that the problem of stress concentration is easy to occur, and the service life of the screen body is reduced, and even the screen body fails.
Disclosure of Invention
The main technical problem who solves of this application provides a pivot subassembly and display device, can improve the life of twining the flexible screen on the pivot subassembly.
In order to solve the technical problem, the application adopts a technical scheme that:
there is provided a rotary shaft assembly comprising:
a central shaft;
the plurality of splicing blocks are circumferentially arranged along the central shaft in a surrounding manner;
each splicing block corresponds to at least one first connecting piece, one end of each first connecting piece is connected to the central shaft, the other end of each first connecting piece is connected to one side, facing the central shaft, of each splicing block, and the first connecting pieces can stretch and contract along the radial direction of the central shaft so as to change the distance between the splicing blocks and the central shaft;
the first driving piece is used for driving the first connecting piece to stretch.
The first driving piece is specifically used for driving the distance change between the central shaft and the splicing blocks in the forward winding starting point range of the flexible screen through the first connecting piece.
Wherein the change of the distance between the splicing block and the central shaft is as follows: starting from the winding starting point, along the winding direction of the flexible screen, the distance between the splicing blocks and the central shaft is increased to be the same as the distance between the residual splicing blocks and the central shaft.
The first driving piece is specifically used for driving the distance change between the central shaft and the splicing blocks in the reverse range of the winding starting point of the flexible screen through the first connecting piece.
Wherein the change of the distance between the splicing block and the central shaft is as follows: and the distance between the splicing blocks and the central shaft is increased along the winding direction of the flexible screen towards the winding starting point until the distance is increased to reach the thickness of the flexible screen.
Wherein, pivot subassembly still includes:
the sliding blocks are connected with the splicing blocks in a sliding manner;
the second connecting pieces are connected with one end of each second connecting piece and the other end of each second connecting piece is connected with one side, facing the central shaft, of each sliding block, and the second connecting pieces can stretch and retract along the radial direction of the central shaft and rotate along the circumferential direction of the central shaft, so that the distance between each sliding block and the central shaft and the relative position between each sliding block and the splicing block are changed;
and the second driving piece is used for driving the second connecting piece to stretch and rotate.
The sliding blocks in sliding connection with the splicing blocks are at least two in number, and the sliding blocks in the number of at least two can be driven by the second driving piece to be close to and then arranged on one side, facing the central shaft, of the splicing blocks side by side and also can be far away from each other and arranged on two sides of the splicing blocks.
And the connection points of the second connecting pieces, corresponding to the sliding blocks in sliding connection with the splicing blocks, on the central shaft are spirally distributed on the central shaft.
Wherein, pivot subassembly still includes:
the two cover plates are respectively covered at two ends of the central shaft, and two ends of the splicing block are respectively connected to two opposite surfaces of the two cover plates in a sealing manner;
and the air inlet of the air inflation unit is positioned on at least one cover plate, and when the air inflation unit inflates air between the splicing blocks and the central shaft, the air can only be discharged from the gaps between the splicing blocks.
In order to solve the above technical problem, another technical solution adopted by the present application is:
provided is a display device including:
the rotating shaft component according to the technical scheme;
the flexible screen can be wound on the rotating shaft assembly in a curling mode, and one end of the flexible screen is fixed on one side surface, away from the central shaft, of one of the splicing blocks so as to form a winding starting point;
when the flexible screen is wound on the rotating shaft assembly in a curling mode, the non-display surface of the flexible screen faces the rotating shaft assembly, and a part with gradually changed curvature radius exists in the flexible screen which belongs to the same circle and is close to the winding starting point, so that the flexible screen is smoothly wound to the inner ring at the outer ring of the winding starting point.
The beneficial effect of this application is: different from the prior art, the rotating shaft assembly provided by the application comprises a central shaft, a plurality of splicing blocks, a plurality of first connecting pieces and a first driving piece; the splicing blocks are circumferentially arranged around the central shaft, each splicing block corresponds to at least one first connecting piece, one end of each first connecting piece is connected to the central shaft, the other end of each first connecting piece is connected to one side, facing the central shaft, of each splicing block, the first connecting pieces can radially stretch along the central shaft so that the distance between each splicing block and the central shaft can be changed, and the first driving piece is used for driving the first connecting pieces to stretch. Therefore, the distances between the splicing blocks near the winding starting point of the flexible screen and the central shaft are gradually changed, the curvature radius of the flexible screen which belongs to the same circle is gradually changed near the winding starting point, the outer ring flexible screen is smoothly wound to the inner ring flexible screen, stress concentration in the flexible screen when the inner ring and the outer ring are overlapped is reduced, and the service life of the flexible screen is prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:
FIG. 1 is a schematic structural view of one embodiment of a spindle assembly according to the present application;
FIG. 2 is a schematic cross-sectional view of the spindle assembly of FIG. 1;
FIG. 3 is another schematic cross-sectional view of the spindle assembly of FIG. 1;
FIG. 4 is a schematic cross-sectional view of another embodiment of a spindle assembly according to the present application;
FIG. 5 is an enlarged schematic view of the dashed box of FIG. 4;
FIG. 6 is a schematic cross-sectional view of another embodiment of a spindle assembly according to the present application;
FIG. 7 is a schematic cross-sectional view of another embodiment of a spindle assembly according to the present application;
FIG. 8 is an enlarged schematic view of the dashed box of FIG. 7;
FIG. 9 is a schematic cross-sectional view of one embodiment of a display device according to the present application;
fig. 10 is a schematic cross-sectional view of another embodiment of a display device of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application belong to the protection scope of the present application.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of an embodiment of a spindle assembly according to the present application, fig. 2 is a schematic sectional structural diagram of the spindle assembly in fig. 1, and fig. 3 is another schematic sectional structural diagram of the spindle assembly in fig. 1, in which the spindle assembly 100 includes a central shaft 11, a plurality of splicing blocks 12, a plurality of first connectors 13, and a first driving member (not shown). The splicing blocks 12 are circumferentially arranged along the central shaft 11, each splicing block 12 corresponds to at least one first connecting piece 13, one end of each first connecting piece 13 is connected to the central shaft 11, the other end of each first connecting piece 13 is connected to one side, facing the central shaft 11, of each splicing block 12, the first connecting pieces 13 can radially stretch along the central shaft 11 so that the distance between the splicing blocks 12 and the central shaft 11 changes, and the first driving piece is used for driving the first connecting pieces 13 to stretch. The first connecting member 13 may be a hydraulic rod or a mechanical link, as long as it can be driven by the first driving member to extend and retract. The connection points of the first connection members 13 on the central shaft 11 may be arranged along the circumferential direction of the central shaft 11, or may be arranged spirally, which is not limited in this application as long as the structure of the rotating shaft assembly 100 is stable.
For clarity, only a few first connecting pieces 13 corresponding to the splicing blocks 12 are shown in fig. 1-3, and fig. 1 only shows two states in fig. 2 and 3 in combination, which does not illustrate that the rotating shaft assembly includes two sets of splicing blocks 12 circumferentially arranged along the central shaft 11. In order to stabilize the structure of the rotating shaft assembly 100, each of the joint blocks 12 corresponds to at least one first connecting member 13, preferably two or more, respectively located between two ends of the joint block 12.
When the plurality of splicing blocks 12 are arranged around the central shaft 11 in the circumferential direction, the shortest distance between the splicing blocks 12 and the central shaft is R1, and when the distances between all the splicing blocks 12 and the central shaft 11 are R1, the cross section of the rotating shaft assembly 100 is as shown in fig. 2, and the splicing blocks 12 are adjacent in sequence and have no gap therebetween. When the first driving member drives the first connecting member 13 to extend from the state shown in fig. 2, the distance between all the tiles 12 and the central shaft 11 is greater than R1, and a gap (not labeled) exists between adjacent tiles 12, and the cross section of the rotating shaft assembly 100 is as shown in fig. 3. When the rotating shaft assembly 100 is applied, one end of the flexible screen is fixed on one side surface of one of the splicing blocks 12, which is far away from the central shaft 11, to form a winding starting point a, and the flexible screen starts to be wound on the rotating shaft assembly 100 in a winding manner for one turn from the winding starting point a.
At this time, the first driving element can be used to drive the first connecting element 13, so that the distances between the plurality of splicing blocks 12 near the winding starting point a and the central shaft 11 are gradually changed, for example, the distance between the partial splicing blocks 12 in the dashed frame in fig. 3 and the central shaft 11 is gradually increased from the winding starting point a, the curvature radius of the flexible screen near the winding starting point a belonging to the same circle is gradually changed, so that the outer ring flexible screen can be smoothly wound to the inner ring flexible screen, the stress concentration in the flexible screen when the inner ring and the outer ring are overlapped is reduced, and the service life of the flexible screen is prolonged.
In some embodiments, with continued reference to fig. 1-3, the first driving member is specifically configured to drive, via the first connecting member 13, a distance variation between the central axis 11 and a plurality of tiles 12 in a forward range of the winding start point a of the flexible screen. Preferably, the distance between the tiles 12 and the central axis 11 varies as: starting from the winding start point a, the distance between the tile 12 and the central axis 11 increases along the flexible screen winding direction (clockwise in fig. 3), gradually increasing from R2 to R3, until the same distance as the remaining tiles 12 and the central axis 11. That is, the distance between the partial tiles 12 in the dashed box in fig. 3 from right to left and the central axis 11 gradually increases from R2 to R3, and the distance between all the tiles 12 outside the dashed box and the central axis 11 is R3. When the flexible screen is wound on the rotating shaft assembly 100, the thickness of the flexible screen does not change suddenly at the winding starting point a, i.e., the junction between the outer ring and the inner ring, but is in smooth transition. Preferably, the difference between R3 and R2 is the thickness of the flexible screen. Therefore, the outer ring flexible screen can be smoothly wound to the inner ring flexible screen, stress concentration in the flexible screen when the inner ring and the outer ring are overlapped is reduced, and the service life of the flexible screen is prolonged.
In other embodiments, the flexible screen can also be arranged on the whole circumference of the central shaft 11, the distance between the splicing blocks 12 and the central shaft 11 is larger and larger, that is, all the splicing blocks 12 form a spiral shape around the central shaft 11, and the flexible screen is also in a spiral shape when wound thereon, so that the stress concentration in the flexible screen when the inner ring and the outer ring are overlapped can be reduced, and the service life of the flexible screen is prolonged.
Further, referring to fig. 4 and 5 in conjunction with fig. 1 to 3, fig. 4 is a schematic cross-sectional structure diagram of another embodiment of the spindle assembly of the present application, and fig. 5 is an enlarged schematic view of a dashed box in fig. 4, in which the spindle assembly 100 of the present application further includes a plurality of sliding blocks 14, a plurality of second connecting members 15, and a second driving member (not shown). The sliding blocks 14 are connected with the splicing blocks 12 in a sliding manner, each sliding block 14 corresponds to at least one second connecting piece 15, one end of each second connecting piece 15 is connected to the central shaft 11, the other end of each second connecting piece 15 is connected to one side, facing the central shaft 11, of the sliding block 14, and the second connecting pieces 15 can stretch out and draw back along the radial direction of the central shaft 11 and rotate along the circumferential direction of the central shaft 11, so that the distance between the sliding blocks 14 and the central shaft 11 is changed, and the relative positions between the sliding blocks 14 and the splicing blocks 12 are changed; the second driving member is used for driving the second connecting member 15 to extend, retract and rotate.
For clarity, only a few second connecting members 15 corresponding to the sliding blocks 14 are shown in fig. 4, and actually, in order to stabilize the structure of the rotating shaft assembly 100, each sliding block 14 corresponds to at least one second connecting member 15, preferably two or more, respectively located at two ends of the sliding block 14 and between the two ends. The connection points of the second connection members 15 on the central shaft 11 may be arranged along the circumferential direction of the central shaft 11, or may be arranged in a spiral shape, but need to be staggered from the connection points of the first connection members 13 on the central shaft 11.
In this embodiment, one of the splicing blocks 12 corresponds to one of the sliding blocks 14, and as described above, when the distance between the splicing block 12 and the central shaft 11 is greater than R1, a gap exists between the adjacent splicing blocks 12, and an indentation is easily formed when the flexible screen covers the gap, so that the sliding block 14 is arranged in this embodiment to fill the corresponding gap, so that the outer surface of the rotating shaft assembly 100 is flat. Specifically, when the distance between the splice 12 and the central shaft 11 is R1, the second driving element driving sliding block 14 is located on the side of the splice 12 facing the central shaft 11 (as shown in fig. 2); after the first driving member drives the splicing block 12 to move along the radial direction of the central shaft 11, the second driving member drives all the sliding blocks 14 to rotate by a predetermined angle along the same direction (clockwise or counterclockwise), and then extend by a predetermined distance along the radial direction to the corresponding gaps. On one hand, the outer ring flexible screen can be smoothly wound to the inner ring flexible screen, stress concentration in the flexible screen when the inner ring and the outer ring are overlapped is reduced, on the other hand, the probability of indentation formation when the flexible screen is curled can be reduced, and therefore the service life of the flexible screen is prolonged.
In some embodiments, please refer to fig. 6, and fig. 6 is a schematic cross-sectional structural view of another embodiment of the rotating shaft assembly of the present application, in which the first driving member is specifically configured to drive, through the first connecting member 13, a distance change between the central shaft 11 and the plurality of splicing blocks 12 in a reverse range of the winding start point a of the flexible screen. Preferably, the distance between the tiles 12 and the central axis 11 varies as: towards the winding start point a, the distance between the tiles 12 and the central axis 11 increases along the flexible screen winding direction (clockwise in fig. 6) until the distance increases to reach the flexible screen thickness. That is to say, the distance between the splicing blocks 12 in the dashed box in fig. 6 from right to left and the central axis 11 gradually increases from R4 to R5, the distance between all the splicing blocks 12 outside the dashed box and the central axis 11 is R4, and the difference between R5 and R4 is the thickness of the flexible screen, wherein the splicing block 12 with the distance between R5 and the central axis 11 is closer to the splicing block 12 corresponding to the winding starting point a. So set up when making the flexible screen winding on pivot subassembly 100, at winding starting point A department, the juncture of outer lane and inner circle, the thickness of flexible screen can not take place the sudden change, but smooth transition. Therefore, the outer ring flexible screen can be smoothly wound to the inner ring flexible screen, stress concentration in the flexible screen when the inner ring and the outer ring are overlapped is reduced, and the service life of the flexible screen is prolonged.
Further, referring to fig. 7 and 8 in combination with fig. 6, fig. 7 is a schematic cross-sectional structure diagram of another embodiment of the spindle assembly of the present application, fig. 8 is an enlarged schematic view of a dashed box in fig. 7, and the spindle assembly 100 further includes a plurality of sliding blocks 14, a plurality of second connecting members 15, and a second driving member (not shown), wherein the number of the sliding blocks 14 slidably connected to each of the splicing blocks 12 is at least two. In the embodiment, a splicing block 12 corresponds to two sliding blocks 14 as an example, when the distance between the splicing block 12 and the central shaft 11 is R1, the second driving element drives the two sliding blocks 14 corresponding to the same splicing block 12 to approach each other and then to be arranged side by side on one side of the splicing block 12 facing the central shaft 11 (refer to fig. 2 for illustration, only each sliding block 14 in fig. 2 is divided into two correspondingly); after the first driving member drives the splicing block 12 to move along the radial direction of the central shaft 11, the second driving member drives one of the two sliding blocks 14 corresponding to the same splicing block 12 to rotate by a preset angle in the forward direction or the reverse direction, and then drives all the sliding blocks 14 to extend by a preset distance along the radial direction to the corresponding gaps, so that the two sliding blocks 14 corresponding to the same splicing block 12 are far away from each other and are arranged at two sides of the splicing block 12.
In this embodiment, the two sliding blocks 14 corresponding to the same splicing block 12 driven by the second driving element need to rotate in opposite directions, and preferably, the connection points of the second connecting elements 15 on the central shaft 11, which correspond to the two sliding blocks 14 slidably connected to each splicing block 12, are spirally distributed on the central shaft 11.
Of course, in this embodiment, one splicing block 12 may be provided corresponding to one sliding block 14, and specifically, refer to the embodiment corresponding to fig. 4, which is not illustrated in any other figures.
According to the flexible screen winding method and device, on one hand, the outer ring flexible screen can be smoothly wound to the inner ring flexible screen, stress concentration in the flexible screen when the inner ring and the outer ring are overlapped is reduced, on the other hand, the probability of indentation formation when the flexible screen is curled can be reduced, and therefore the service life of the flexible screen is prolonged.
In some embodiments, with continued reference to fig. 1-3, the rotating shaft assembly 100 includes a central shaft 11, a plurality of splicing blocks 12, a plurality of first connectors 13, a first driving member (not shown), two cover plates (not shown), and an inflation unit (not shown), but does not include the above-mentioned sliding block, second connector, and second driving member. Wherein, the two cover plates are respectively covered at two ends of the central shaft 11, and two ends of the splicing block 12 are respectively connected with two opposite surfaces of the two cover plates in a sealing way; the air inlet of the inflation unit is positioned on at least one cover plate, and when the inflation unit inflates air between the splicing blocks 12 and the central shaft 11, the air can only be exhausted from the gaps between the splicing blocks 12.
As described above, when the distance between the splicing blocks 12 and the central shaft 11 is greater than R1, and the flexible screen is curled and wound on the rotating shaft assembly 100, a gap exists between adjacent splicing blocks 12, and when the flexible screen covers the gap, an indentation is easily formed, which causes stress concentration, therefore, the present embodiment sets that the inflation unit is used to inflate between the splicing blocks 12 and the central shaft 11, because two cover plates are sealed at two ends of the splicing blocks 12, when the inflation pressure reaches a certain degree, the flexible screen and the rotating shaft assembly 100 are converted into a non-contact type, and the intersection of the outer ring and the inner ring flexible screen at the winding starting point a is also a non-contact type, which avoids squeezing at this time, and there is no interface with stress concentration, therefore, the present embodiment can reduce the stress concentration indentation in the flexible screen when the inner ring and the outer ring are overlapped, reduce the probability of forming the flexible screen when the.
Based on the same inventive concept, the present embodiment further provides a display device including a flexible screen 200 and the hinge assembly 100 according to any one of the above embodiments. Referring to fig. 9 and 10 in combination with fig. 1 to 8, fig. 9 is a schematic cross-sectional structure diagram of an embodiment of a display device of the present application, and fig. 10 is a schematic cross-sectional structure diagram of another embodiment of the display device of the present application. The rotary shaft assembly 100 of the display device shown in fig. 9 is shown in fig. 4, and the rotary shaft assembly of the display device shown in fig. 10 is shown in fig. 7. The flexible screen 200 can be wound on the rotating shaft assembly 100 in a curling manner, and one end of the flexible screen 200 is fixed on one side surface of one of the splicing blocks 12, which is away from the central shaft 11, so as to form a winding starting point a. For clarity of illustration, the first and second coupling members 13 and 15 are not shown in fig. 9 and 10, and the flexible panels 200 and the outer surfaces of the rotary shaft assembly 100 and the flexible panels 200 of the inner and outer races are not shown in contact with each other in fig. 9 and 10, but have a gap therebetween to clearly show the relationship between the respective members.
As can be seen from the above embodiment, the first connecting member 13 can extend and retract along the radial direction of the central axis 11 to change the distance between the splicing blocks 12 and the central axis 11, so that the distance between the splicing blocks 12 in the dashed box from right to left and the central axis 11 gradually increases from R2 to R3 (fig. 9), or gradually increases from R4 to R5 (fig. 10), and the distances between all the splicing blocks 12 outside the dashed box and the central axis 11 are R3 (fig. 9) or R4 (fig. 10). Therefore, when the flexible screen 200 is wound on the rotating shaft assembly 100 in a curling manner, the non-display surface of the flexible screen 200 faces the rotating shaft assembly 100, and the flexible screen 200 belonging to the same turn near the winding start point a has a gradually changing curvature radius portion, specifically, the curvature radius of the flexible screen 200 in the dashed line frame gradually increases from right to left, so that the outer flexible screen 200 is smoothly wound to the inner flexible screen 200, and the gradually changing curvature radius portion of the flexible screen 200 is represented by different filling formats in fig. 9 and 10. Moreover, the sliding blocks 14 can fill the gaps between the splicing blocks 12, so that the outer surface of the rotating shaft assembly 100 is flat.
According to the flexible screen winding method and device, on one hand, the outer ring flexible screen can be smoothly wound to the inner ring flexible screen, stress concentration in the flexible screen when the inner ring and the outer ring are overlapped is reduced, on the other hand, the probability of indentation formation when the flexible screen is curled can be reduced, and therefore the service life of the flexible screen is prolonged.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A spindle assembly, comprising:
a central shaft;
the plurality of splicing blocks are circumferentially arranged along the central shaft in a surrounding manner;
each splicing block corresponds to at least one first connecting piece, one end of each first connecting piece is connected to the central shaft, the other end of each first connecting piece is connected to one side, facing the central shaft, of each splicing block, and the first connecting pieces can stretch and contract along the radial direction of the central shaft so as to change the distance between the splicing blocks and the central shaft;
the first driving piece is used for driving the first connecting piece to stretch.
2. The rotating shaft assembly according to claim 1, wherein the first driving member is specifically configured to drive, through the first connecting member, a change in distance between the central shaft and a plurality of the splicing blocks in a forward winding starting point range of the flexible screen.
3. The spindle assembly of claim 2, wherein the change in distance between the splice and the central shaft is: starting from the winding starting point, along the winding direction of the flexible screen, the distance between the splicing blocks and the central shaft is increased to be the same as the distance between the residual splicing blocks and the central shaft.
4. The rotating shaft assembly according to claim 1, wherein the first driving member is specifically configured to drive, through the first connecting member, a distance variation between the central shaft and a plurality of the splicing blocks in a winding start point reverse range of the flexible screen.
5. The spindle assembly of claim 4, wherein the change in distance between the splice and the central shaft is: and the distance between the splicing blocks and the central shaft is increased along the winding direction of the flexible screen towards the winding starting point until the distance is increased to reach the thickness of the flexible screen.
6. The spindle assembly of any one of claims 1 to 5, further comprising:
the sliding blocks are connected with the splicing blocks in a sliding manner;
the second connecting pieces are connected with one end of each second connecting piece and the other end of each second connecting piece is connected with one side, facing the central shaft, of each sliding block, and the second connecting pieces can stretch and retract along the radial direction of the central shaft and rotate along the circumferential direction of the central shaft, so that the distance between each sliding block and the central shaft and the relative position between each sliding block and the splicing block are changed;
and the second driving piece is used for driving the second connecting piece to stretch and rotate.
7. The rotating shaft assembly according to claim 6, wherein the number of the sliding blocks connected with each of the splicing blocks in a sliding manner is at least two, and the sliding blocks with the number of at least two can be driven by the second driving member to be close to each other and then arranged side by side on one side of the splicing blocks, which faces the central shaft, and also can be far away from each other and arranged on two sides of the splicing blocks.
8. The spindle assembly of claim 7, wherein the connection points of the second connecting member corresponding to the sliding blocks slidably connected to each of the splicing blocks on the central shaft are spirally distributed on the central shaft.
9. The spindle assembly of claim 1, further comprising:
the two cover plates are respectively covered at two ends of the central shaft, and two ends of the splicing block are respectively connected to two opposite surfaces of the two cover plates in a sealing manner;
and the air inlet of the air inflation unit is positioned on at least one cover plate, and when the air inflation unit inflates air between the splicing blocks and the central shaft, the air can only be discharged from the gaps between the splicing blocks.
10. A display device, comprising:
a spindle assembly as claimed in any one of claims 1 to 9;
the flexible screen can be wound on the rotating shaft assembly in a curling mode, and one end of the flexible screen is fixed on one side surface, away from the central shaft, of one of the splicing blocks so as to form a winding starting point;
when the flexible screen is wound on the rotating shaft assembly in a curling mode, the non-display surface of the flexible screen faces the rotating shaft assembly, and a part with gradually changed curvature radius exists in the flexible screen which belongs to the same circle and is close to the winding starting point, so that the flexible screen on the outer circle is smoothly wound to the flexible screen on the inner circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011439130.7A CN112762085B (en) | 2020-12-07 | 2020-12-07 | Rotating shaft assembly and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011439130.7A CN112762085B (en) | 2020-12-07 | 2020-12-07 | Rotating shaft assembly and display device |
Publications (2)
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114203046A (en) * | 2021-12-20 | 2022-03-18 | 云谷（固安）科技有限公司 | Support assembly, display device and control method thereof |
| CN114267252A (en) * | 2021-12-28 | 2022-04-01 | 武汉天马微电子有限公司 | Flexible display panel |
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| CN112762085B (en) | 2022-07-05 |
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