WO2023184168A1 - 转轴机构及可折叠柔性显示装置 - Google Patents

转轴机构及可折叠柔性显示装置 Download PDF

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Publication number
WO2023184168A1
WO2023184168A1 PCT/CN2022/083796 CN2022083796W WO2023184168A1 WO 2023184168 A1 WO2023184168 A1 WO 2023184168A1 CN 2022083796 W CN2022083796 W CN 2022083796W WO 2023184168 A1 WO2023184168 A1 WO 2023184168A1
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WO
WIPO (PCT)
Prior art keywords
mounting base
plate
rotating shaft
away
connecting rod
Prior art date
Application number
PCT/CN2022/083796
Other languages
English (en)
French (fr)
Inventor
张俊
王志会
青威
游传坤
伍峰平
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to PCT/CN2022/083796 priority Critical patent/WO2023184168A1/zh
Priority to CN202280000599.1A priority patent/CN117157692A/zh
Publication of WO2023184168A1 publication Critical patent/WO2023184168A1/zh

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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

Definitions

  • the present disclosure relates to the field of display technology, and specifically to a rotating shaft mechanism and a foldable flexible display device.
  • Flexible displays have bendable properties, making it possible for smart terminals equipped with flexible displays, such as smartphones and notebook products, to switch between folded and unfolded states.
  • folding mobile phones or folding notebooks will have varying degrees of creases after being used for a period of time. Because when the hinge mechanism is unfolding or closing, the length of the bending area of the flexible display panel changes. When the flexible display panel is flattened, the length of the bending area is inconsistent with the width of the hinge mechanism. Since the strength of the flexible display panel is weaker than the strength of the hinge mechanism, convex or concave creases appear on the flexible display panel.
  • the purpose of this disclosure is to overcome the problem of convex or concave creases on the flexible display panel due to the inconsistency between the length of the bending area of the flexible display panel and the width of the hinge mechanism, and to provide a rotating shaft mechanism that can be fixed at any folding angle. and foldable flexible display devices.
  • a rotating shaft mechanism including a mounting base and at least one set of rotating assemblies.
  • Each set of rotating assemblies includes two rotating modules.
  • the two rotating modules are symmetrically connected to opposite sides of the mounting base along a first direction.
  • the rotation module includes a support plate, a sliding plate and an elastic pressing mechanism.
  • the support plate is rotatably connected to the mounting base.
  • One side of the support plate is used to support the flexible display panel.
  • the other side of the support plate facing one side is provided with a first limiter.
  • the first limit part and the second limit part are spaced apart along the first direction; part of the sliding plate is rotatably connected to the mounting base, and the other part is slidingly connected to the support plate, and the rotating shaft of the sliding plate.
  • the extension direction of the sliding plate and the extension direction of the rotation axis of the support plate are arranged along the second direction and are parallel to each other.
  • the second direction is perpendicular to the first direction.
  • the part of the sliding plate close to the mounting base is provided with a protrusion, and the protrusion is along the second direction.
  • the elastic pressing mechanism Extends and is located on the side of the first limiting part away from the mounting base, and the end of the sliding plate away from the mounting base is opposite to the second limiting part; the elastic pressing mechanism is arranged along the second direction, and one end of the elastic pressing mechanism is fixedly connected On the sliding plate, the other end is slidably connected to the support plate.
  • the elastic pressing mechanism squeezes the sliding plate so that the protruding part abuts the first limiting part.
  • the end of the sliding plate away from the mounting base is spaced apart from the second limiting part.
  • the distance between the end of the sliding plate away from the fixed seat and the second limiting portion is proportional to the maximum angle at which the supporting plate can rotate.
  • the rotating shaft mechanism also includes a torsion component.
  • the torsion component includes a connecting rod, a sleeve, a pressure plate, a first elastic member, and a limiting structure.
  • the connecting rod is connected to the mounting base, and the extending direction of the connecting rod is along Set in the second direction; the sleeve is fixed on the outside of the connecting rod, and the sleeve can rotate synchronously with the support plate; the pressure plate is sleeved on the connecting rod, and is fixed to the circumferential position of the connecting rod, and the pressure plate is against the sleeve away from the mounting seat
  • the first elastic member is against the side of the pressure plate away from the mounting base, and the end of the first elastic member away from the mounting base is fixed; the limiting structure is against the side of the first elastic member away from the mounting base, and the limiting structure is against the side of the first elastic member away from the mounting base.
  • the position structure is fixed on the connecting rod; a positioning structure is provided between the pressure plate and the sleeve, so that when the sleeve stops rotating, the first elastic member squeezes the pressure plate and fixes the rotational positions of the pressure plate and the sleeve.
  • the positioning structure includes a plurality of grooves and a plurality of protrusions.
  • the plurality of grooves are provided along the circumferential direction on the side of the pressure plate that contacts the sleeve; the plurality of protrusions are provided on the sleeve. Fits multiple grooves.
  • the positioning structure includes a plurality of grooves and a plurality of protrusions.
  • the plurality of grooves are provided along the circumferential direction on a side of the sleeve that is in contact with the pressure plate; the plurality of protrusions are provided on the pressure plate and are in contact with the pressure plate. Multiple grooves to fit.
  • the limiting structure includes a blocking member and a locking member.
  • the blocking member is sleeved on the connecting rod and abuts against the side of the first elastic member away from the mounting base; the locking member is installed on the connecting rod.
  • the side of the connecting rod away from the blocking member is provided with a slot, and the locking member is located in the slot and abuts against the side of the blocking member away from the mounting base.
  • the torsion assembly further includes a guide post and a second elastic member.
  • the guide post is fixed to the side of the blocking member close to the mounting base and passes through the pressure plate; the second elastic member is sleeved outside the guide post. And abut against the blocking member and the pressure plate respectively.
  • an elastic pressing mechanism is provided on both sides of the sliding plate along the second direction.
  • the elastic pressing mechanism includes a mounting shaft and a third elastic member.
  • One end of the mounting shaft is fixedly connected to the protruding portion away from the installation.
  • One side of the seat and the other end are in clearance fit with the second limiter;
  • the third elastic member is sleeved outside the installation shaft, and the two ends of the third elastic member are respectively against the first limiter and the second limiter.
  • the rotating shaft mechanism also includes a co-moving component, which is used to drive the connecting rods, sleeves and support plates of the two rotating modules to rotate synchronously.
  • the co-moving component includes a transmission mechanism.
  • the transmission mechanism includes two first gears and a gear set.
  • the two first gears are connected to two connecting rods in one-to-one correspondence, and the first gears are connected to The rods are coaxially arranged; the gear set is meshed between the two first gears, and when one first gear rotates, the gear set drives the other first gear to rotate.
  • the gear set includes two second gears, the two second gears mesh with the two first gears in one-to-one correspondence, and the two second gears mesh with each other.
  • the co-moving component further includes a first connecting part, a second connecting part and a pin.
  • the first connecting part is provided on the support plate.
  • the first connecting part is provided with a strip-shaped slide groove.
  • the chute gradually inclines toward the side away from the support plate along the direction close to the mounting base; the second connection part is sleeved on the connecting rod and extends along the first direction toward the side close to the support plate.
  • the second connection part is provided with There is a mounting hole; one end of the pin is fixed in the mounting hole, and the other end is slidingly connected in the strip chute.
  • the mounting base is provided with an arc-shaped recess and an arc-shaped protrusion.
  • An arc-shaped cavity is formed between the arc-shaped recess and the arc-shaped protrusion.
  • the portion connecting the sliding plate and the mounting base has an arc-shaped connection. part, and the arc-shaped connecting part is rotatably connected in the arc-shaped cavity.
  • the portion connecting the sliding plate and the supporting plate is provided with a plurality of strip holes along the first direction.
  • Each strip hole is provided with a limiter, and the end of the limiter away from the sliding plate is arbitrary. The distance between two points is greater than the width of the strip hole.
  • the rotation module further includes a cover plate, which is provided on the side of the sliding plate and the elastic pressing mechanism away from the support plate.
  • an area of the support plate facing the sliding plate and the elastic pressing mechanism is lower than the remaining area of the supporting plate to form an installation cavity for disposing the sliding plate and the elastic pressing mechanism.
  • the rotating shaft mechanism includes two sets of rotating assemblies, and the two sets of rotating assemblies are symmetrically arranged on both sides of the mounting base along the second direction.
  • a foldable flexible display device including the hinge mechanism of one aspect of the present disclosure.
  • FIG. 1 is a schematic structural diagram of a foldable flexible display device related to the related art after being used for a period of time.
  • FIG. 2 is a three-dimensional structural view of a rotating shaft mechanism according to an embodiment of the present disclosure.
  • FIG. 3 is a perspective view of a partial structure of a rotating shaft mechanism according to an embodiment of the present disclosure.
  • FIG. 4 is an exploded view of a partial structure of a rotating shaft mechanism according to an embodiment of the present disclosure.
  • FIG. 5 is a top view of a partial structure of the rotating shaft mechanism according to the embodiment of the present disclosure.
  • Fig. 6 is a cross-sectional view taken along line A-A in Fig. 5 .
  • FIG. 7 is a schematic diagram of the rotation state of the rotating shaft mechanism according to the embodiment of the present disclosure.
  • FIG. 8 is an exploded view of the hinge mechanism according to the embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a foldable flexible display device according to an embodiment of the present disclosure.
  • Example embodiments will now be described more fully with reference to the accompanying drawings.
  • Example embodiments may, however, be embodied in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments.
  • the same reference numerals in the drawings indicate the same or similar structures, and thus their detailed descriptions will be omitted.
  • the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.
  • the folding products currently sold on the market mainly include water-drop folding products and U-shaped folding products.
  • the water drop-shaped hinge mechanism has a better match with the flexible display panel. Therefore, the water drop-shaped folding product has slighter creases than the U-shaped folding product.
  • the water drop-shaped hinge mechanism has a complex structure and the cost is too high. Generally, the water drop-shaped hinge mechanism is about It is 3 times the cost of U-shaped hinge mechanism.
  • the width of the hinge mechanism 100 is the same as the length of the bending area of the flexible display panel 300, and the flexible display panel 300 is straight without creases.
  • the hinge mechanism 100 will pull or squeeze the flexible display.
  • the panel 300 causes the length of the bending area of the flexible display panel 300 to be elongated, causing the length of the bending area of the flexible display panel 300 to change.
  • the flexible display panel 300 When the flexible display panel 300 is flattened to 180°, the length of the bending area of the flexible display panel 300 is inconsistent with the width of the hinge mechanism 100. Since the strength of the flexible display panel 300 is weaker than that of the hinge mechanism 100, the flexibility The display panel may have raised or depressed creases.
  • the rotating shaft mechanism includes a mounting base 1 and at least one set of rotating components.
  • Each set of rotating components includes two rotating modules 2.
  • the two rotating modules 2 are symmetrically connected to the mounting base 1 and opposite to each other along the first direction.
  • the rotation module 2 includes a support plate 201, a sliding plate 202 and an elastic pressing mechanism 204.
  • the support plate 201 is rotatably connected to the mounting base 1.
  • One side of the support plate 201 is used to support the flexible display panel.
  • the support plate 201 and The other side facing one side is provided with a first limiting part 2011 and a second limiting part 2012.
  • the first limiting part 2011 and the second limiting part 2012 are spaced apart along the first direction; a part of the sliding plate 202 is rotatably connected. On the mounting base 1, another part is slidingly connected to the support plate 201.
  • the extension direction of the rotation axis of the sliding plate 202 and the extension direction of the rotation axis of the support plate 201 are arranged along the second direction and are parallel to each other.
  • the second direction is perpendicular to the first direction.
  • the sliding plate 202 is provided with a protruding portion 2021 near the mounting base 1.
  • the protruding portion 2021 extends along the second direction and is located on the side of the first limiting portion 2011 away from the mounting base 1.
  • the sliding plate 202 is away from the mounting base 1.
  • One end is opposite to the second limiting part 2012; the elastic pressing mechanism 204 is arranged along the second direction.
  • One end of the elastic pressing mechanism 204 is fixedly connected to the sliding plate 202, and the other end is slidingly connected to the supporting plate 201.
  • the elastic pressing mechanism 204 squeezes Press the sliding plate 202 so that the protruding part 2021 abuts the first limiting part 2011.
  • the end of the sliding plate 202 away from the mounting base 1 is spaced apart from the second limiting part 2012.
  • the end of the sliding plate 202 away from the fixed base is separated from the second limiting part 2011.
  • the distance between the limiting parts 2012 is proportional to the maximum angle at which the support plate 201 can rotate.
  • a first limiting part 2011 and a second limiting part 2012 are provided on one side of the support plate 201 .
  • the sliding plate 202 is provided with a protruding portion 2021 at a portion close to the mounting base 1 , and an end of the sliding plate 202 away from the mounting base 1 is opposite to the second limiting portion 2012 .
  • One end of the elastic pressing mechanism 204 is fixedly connected to the sliding plate 202, and the other end is slidingly connected to the supporting plate 201.
  • the elastic pressing mechanism 204 squeezes the sliding plate 202 so that the protruding portion 2021 abuts the first limiting portion 2011 and slides.
  • One end of the plate 202 away from the mounting base 1 is spaced apart from the second limiting portion 2012 .
  • the support plates 201 are brought closer to each other under the action of external force.
  • the jig is used to squeeze the two support plates 201 so that the two support plates are close to the mounting base 1.
  • the second limit The position portion 2012 slides toward the end of the sliding plate 202 away from the fixed seat.
  • the flexible display panel is attached to one side of the supporting plate 201.
  • the support plates 201 approach each other, and the distance between the protruding portion 2021 and the first limiting portion 2011 gradually decreases as the support plates 201 rotate.
  • the support plate 201 is usually connected to the middle frame, and the flexible display panel is attached to the middle frame. Under the elastic force of the elastic pressing mechanism 204, the flexible display panel always maintains a tight and straight state.
  • first direction is the x direction shown in FIG. 5
  • second direction is the y direction shown in FIG. 5 .
  • the rotating shaft mechanism includes a mounting base 1 and two sets of rotating assemblies.
  • the two sets of rotating assemblies are symmetrically arranged on both sides of the mounting base 1 along the second direction.
  • Each set of rotation assemblies includes two rotation modules 2, which are symmetrically connected to opposite sides of the mounting base 1 along the first direction.
  • the support plates 201 of the two rotation modules on the same side of the mounting base 1 can be integrally formed.
  • the two rotating modules 2 in each set of rotating assemblies have the same structure and installation method.
  • the two rotation modules 2 can be controlled separately or in linkage control.
  • the mounting base 1 includes two end plates 11, two side plates 12, a mounting plate 13 and a baffle 14.
  • the two end plates 11 are two flat plates arranged oppositely.
  • the side plates 12 are two arc-shaped plates arranged oppositely, and the mounting plate 13 and the baffle 14 are two flat plates arranged oppositely.
  • the two side plates 12 and one mounting plate 13 are connected end to end in sequence, and are connected between the two end plates 11 Between them and perpendicular to the two end plates 11 , the baffle 14 is connected to the two side plates 12 and the side of the two end plates 11 away from the mounting plate 13 .
  • Two support plates 201 are arranged opposite to the above-mentioned mounting plate 13 and are located on opposite sides of the baffle 14 along the first direction. A part of the support plates 201 is rotatably connected to the mounting base 1 . Among them, the two support plates 201 are disposed on the same plane, and the parts where the two support plates 201 are connected to the mounting base 1 are close to each other and cooperate with the baffle 14 so that the two support plates 201 and the baffle 14 approximately form one large piece. The support plate and the flexible display panel are attached to the side of the large support plate away from the mounting plate 13 .
  • the first connection structure It includes a plurality of bumps 142
  • the second connection structure includes a plurality of notches 2013 matching each of the bumps 142, wherein the plurality of bumps 142 of the first connection structure are disposed in the corresponding notches 2013 of the second connection structure.
  • a part of the sliding plate 202 is rotatably connected to the mounting base 1, and the other part is slidingly connected to the supporting plate 201.
  • the extending direction of the rotating axis of the sliding plate 202 and the extending direction of the rotating axis of the supporting plate 201 are arranged along the second direction and are parallel to each other.
  • the second direction is perpendicular to the first direction.
  • an arc-shaped depression 131 is provided on the mounting plate 13.
  • the part where the sliding plate 202 is connected to the mounting base 1 has an arc-shaped connection portion 2023.
  • the arc-shaped connection portion 2023 is rotatably connected in the arc-shaped depression 131.
  • the baffle 14 is connected to the mounting plate 131.
  • the opposite side of the plate 13 is provided with an arc-shaped protrusion 141, which matches the above-mentioned arc-shaped recess 131, and the arc-shaped connecting portion 2023 is limited to the gap between the arc-shaped protrusion 141 and the arc-shaped recess 131.
  • the sliding plate 202 also includes a straight connecting portion 2024, which is connected to an end of the arc-shaped connecting portion 2023 away from the mounting base 1 along the first direction.
  • the straight connecting portion 2024 extends from the side plate 12 of the mounting base 1 and is slidably connected to the support plate 201 .
  • the supporting plate 201 has a first limiting part 2011 and a second limiting part 2012 on the opposite side of one side for supporting the flexible display panel.
  • the first limiting part 2011 and the second limiting part 2012 are spaced apart along the first direction. set up.
  • the portion of the straight connecting portion 2024 close to the mounting base 1 is provided with protruding portions 2021 along the second direction.
  • the protruding portions 2021 extend toward both sides of the straight connecting portion 2024 in the second direction.
  • the protruding portions 2021 are located away from the first limiting portion 2011 for installation.
  • On one side of the base 1, the end of the sliding plate 202 away from the mounting base 1 is opposite to the second limiting portion 2012.
  • the width of the straight connecting portion 2024 at the side of the protruding portion 2021 away from the mounting base 1 is smaller than the width at the side of the protruding portion 2021 close to the mounting base 1 .
  • the elastic pressing mechanism 204 is provided on both sides of the straight connecting portion 2024 along the second direction.
  • the elastic pressing mechanism 204 includes a third elastic member 2041 and a mounting shaft 2042.
  • One end of the mounting shaft 2042 is fixedly connected to the side of the protruding portion 2021 away from the mounting base 1, and the other end is in clearance fit with the second limiting portion 2012 and can Sliding relative to the support plate 201, the third elastic member 2041 is sleeved outside the installation shaft 2042.
  • the third elastic member 2041 squeezes the support plate 201 so that the first limiting part 2011 abuts the protruding part 2021.
  • the end of the sliding plate 202 away from the mounting base 1 is spaced apart from the second limiting part 2012.
  • the sliding plate 202 is away from the fixed part.
  • the distance between one end of the seat and the second limiting portion 2012 is proportional to the maximum angle A that the support plate 201 can rotate.
  • a plurality of strip holes 2022 are provided along the first direction at the connecting portion of the sliding plate 202 and the supporting plate 201.
  • Each strip hole 2022 is provided with a limiting member 203.
  • the limiting member 203 passes through the strip hole 2022 and is fixed to the support plate 201 .
  • the distance between any two points of the end of the limiter 203 away from the sliding plate 202 is greater than the width of the strip hole 2022.
  • the width of the strip hole 2022 is usually greater than or equal to the length of the end of the sliding plate 202 away from the fixed seat and the second limiter. The distance between parts 2012. It should be noted that the length of the strip hole 2022 refers to the size in the first direction, and the width of the strip hole 2022 refers to the size in the second direction.
  • the rotating shaft mechanism also includes a torsion component 3.
  • the torsion component 3 includes a connecting rod 301, a sleeve 302, a pressure plate 303, a first elastic member 304 and a limiting structure 305.
  • the connecting rod 301 is connected to the mounting base 1, and the extending direction of the connecting rod 301 Set along the second direction; the sleeve 302 is fixed on the outside of the connecting rod 301, and the sleeve 302 can rotate synchronously with the support plate 201; the pressure plate 303 is sleeved on the connecting rod 301, and is fixed to the circumferential position of the connecting rod 301, and the pressure plate 303
  • the first elastic member 304 abuts against the side of the sleeve 302 away from the mounting base 1; the first elastic member 304 abuts against the side of the pressure plate 303 away from the mounting base 1, and the end of the first elastic member 304 away from the mounting base 1 is fixedly arranged; the limit
  • the connecting rod 301 can pass through one of the end plates 11 , and the connecting rod 301 can also be connected to the arc-shaped protrusion 141 . It can be understood that the connecting rod 301 can rotate relative to the mounting base 1 . As mentioned earlier, the extending direction of the connecting rod 301 is the same as the extending direction of the rotation axis of the supporting plate 201 , so the extending direction of the connecting rod 301 is perpendicular to the end plate 11 .
  • the extension direction of the connecting rod 301 and the extension direction of the rotation axis of the arc-shaped protrusion 141 can be set on the same axis, or the extension direction of the connecting rod 301 and the extension direction of the rotation axis of the arc-shaped protrusion 141 can be on different axes.
  • the sleeve 302 is sleeved on the outside of the connecting rod 301.
  • the connecting rod 301 can rotate relative to the mounting base 1
  • the sleeve 302 can be fixed relative to the connecting rod 301.
  • the sleeve 302 and the connecting rod 301 are interference-fitted, so that the sleeve 302 and the connecting rod 301 are interference-fitted.
  • the barrel 302 can rotate together with the connecting rod 301.
  • a bearing can be provided between the connecting rod 301 and the mounting base 1 to rotationally connect the connecting rod 301 and the mounting base 1 .
  • the sleeve 302 can be placed as close as possible to the end plate 11 of the mounting base 1. It can be understood that the sleeve 302 is sleeved on the connecting rod 301 and fixed relative to the connecting rod 301 .
  • the pressure plate 303 abuts against the side of the sleeve 302 away from the mounting base 1 . It should be noted that the pressure plate 303 can move along the axial direction of the connecting rod 301, but cannot rotate around the connecting rod 301. In order to improve the installation efficiency, the pressure plates 303 of the two rotating modules 2 are integrated, and the two ends of the pressure plate 303 are respectively sleeved on the two connecting rods 301. It is understandable that the pressure plate 303 cooperates with the two connecting rods 301 at the same time. , so it will not rotate around the connecting rod 301.
  • a plurality of grooves are provided along the circumferential direction on the side of the sleeve 302 that contacts the pressure plate 303 , and a plurality of protrusions are provided along the circumferential direction on the side of the pressure plate 303 that contacts the sleeve 302 .
  • Each protrusion can extend into the corresponding groove, so that the relative position of the sleeve 302 and the pressure plate 303 along the circumferential direction is fixed.
  • a plurality of grooves may also be provided on the side of the pressure plate 303 that contacts the sleeve 302 along the circumferential direction, and correspondingly, the sleeve 302 may be provided with protrusions that match the grooves.
  • the amount of rotational force required when the pressure plate 303 rotates can be controlled by setting the protrusion degree of the protrusion and the depth of the groove.
  • the first elastic member 304 is sleeved on the connecting rod 301, and a limiting structure 305 is provided on the side of the first elastic member 304 away from the mounting base 1.
  • the limiting structure 305 can be fixed to the connecting rod 301, thereby realizing the first elastic member 304. Fixation of piece 304.
  • the limiting structure 305 may include a blocking member, which is sleeved on the connecting rod 301 and abuts against the side of the first elastic member 304 away from the mounting base 1 .
  • the blocking member can be detachably connected to the connecting rod 301.
  • the connecting rod 301 can be provided with a slot on the side away from the blocking member, and a locking member is provided in the slot, and the locking member is against Lean against the side of the blocking member away from the mounting base 1.
  • the torsion assembly 3 may also include a guide post 306 and a second elastic member 307.
  • the guide post 306 is fixed on the side of the blocking member close to the mounting base 1 and is located between the two connecting rods 301.
  • the guide post 306 passes through the pressure plate 303.
  • the second elastic member 307 is sleeved outside the guide column 306 and abuts against the blocking member and the pressure plate 303 respectively.
  • This rotating shaft mechanism achieves double the torque without changing the overall size of the rotating shaft mechanism by increasing the number of elastic parts instead of the length and diameter of the inelastic parts. While increasing the torque, the size of the rotating shaft mechanism is not increased, and the foldable product can be made lighter and thinner.
  • first elastic member 304 and the second elastic member 307 can also be installed in other ways.
  • mounting seats 1 can be respectively provided on the pressure plate 303 and the limiting structure 305. Connect the first elastic member 304 to the two mounting seats 1 respectively.
  • the end of the first elastic member 304 away from the mounting base 1 may also be fixed in other ways.
  • the end of the first elastic member 304 away from the mounting base 1 may be directly fixed to the connecting rod 301 .
  • the first elastic member 304 may be fixed to the connecting rod 301 by welding or other methods.
  • An elastic member 304 is fixed to the connecting rod 301.
  • the first elastic member 304 and the second elastic member 307 can be springs, which sleeve the blocking member on the connecting rod 301 .
  • the locking member can be configured as an axial retaining ring, and a corresponding slot is provided on the connecting rod 301, and the locking member is clamped in the groove.
  • the limiting structures 305 of the two rotating modules 2 can also be integrated into one body, and the two ends of the blocking member are respectively sleeved on the two connecting rods 301.
  • the locking part has a disconnecting part.
  • the sleeve 302 When the sleeve 302 is fixed relative to the connecting rod 301, when the support plate 201 rotates, the sleeve 302 and the connecting rod 301 are driven to rotate, while the pressure plate 303 always remains stationary in the circumferential direction, so the sleeve 302 keeps rotating relative to the pressure plate 303.
  • the support plate 201 stops rotating at a certain angle the first elastic member 304 and the second elastic member 307 against the side of the pressure plate 303 away from the mounting base 1 squeeze the pressure plate 303 so that the protrusion of the pressure plate 303 snaps into the sleeve. In the groove of the barrel 302, the position of the sleeve 302 is fixed.
  • the connecting rod 301 can also be fixed relative to the mounting base 1.
  • the sleeve 302 can rotate relative to the connecting rod 301.
  • the support plate 201 rotates, the sleeve 302 is driven to rotate around the connecting rod 301.
  • the support plate 201 stops rotating at a certain angle the first elastic member 304 and the second elastic member are pressed against the side of the pressure plate 303 away from the mounting base 1.
  • the member 307 presses the pressing plate 303 so that the protrusion of the pressing plate 303 is inserted into the groove of the sleeve 302, thereby fixing the position of the sleeve 302 relative to the connecting rod 301.
  • the rotating shaft mechanism may also include a co-moving component 4, which is used to drive the connecting rods 301, sleeves 302 and support plates 201 of the two rotating modules 2 to rotate synchronously.
  • the co-moving component 4 may include a transmission mechanism 404, which is connected to the mounting base 1.
  • the transmission mechanism 404 is used to drive the connecting rods 301 and sleeves 302 of the two rotating modules 2 to rotate synchronously.
  • the connecting rod 301 is rotatably connected to the mounting base 1
  • the sleeve 302 is an interference fit with the connecting rod 301, with the purpose of driving the connecting rod 301 of one rotating module 2 to the connecting rod of another rotating module 2.
  • 301 rotates, driving the sleeve 302 that cooperates with the connecting rod 301 of another rotating module 2 to rotate.
  • the transmission mechanism 404 is provided between the sleeve 302 and the mounting base 1.
  • the transmission mechanism 404 may include two gear seats 4043, two first gears 4041 and a gear set.
  • the two connecting rods 301 pass through one gear seat 4043, two A first gear 4041 and another gear seat 4043, the gear set is meshed between the two first gears 4041.
  • the two first gears 4041 are connected to the two connecting rods 301 in one-to-one correspondence, and the first gears 4041 and the connecting rods 301 are coaxially arranged, the gear set is meshed between the two first gears 4041, and the two gear seats 4043 are respectively provided on both sides of the first gear 4041 and the gear set along the second direction, and can limit the axial positions of the first gear 4041 and the gear set to ensure the meshing between the first gear 4041 and the gear set.
  • a support plate 201 When a support plate 201 rotates, it drives the sleeve 302 to follow.
  • the sleeve 302 drives the connecting rod 301 with interference fit to rotate.
  • the connecting rod 301 drives a first gear 4041 fixed coaxially with it to rotate.
  • a first gear 4041 When rotating, the drive gear set rotates, and the gear set drives another first gear 4041 to rotate, the connecting rod 301 fixed to the other first gear 4041, and the sleeve 302 that interferes with the connecting rod 301 to rotate, thereby driving another support Plate 201 rotates.
  • the gear set may include an odd number of second gears 4042, the two outermost gears of the odd number of second gears 4042 mesh with the two first gears 4041, and the odd number of second gears 4042 mesh with each other.
  • the gear set may also include an even number of second gears 4042.
  • the two outermost gears of the even-numbered second gears 4042 mesh with the two first gears 4041, and the even-numbered second gears 4042 mesh with each other.
  • a first gear 4041 is transmitted through an even number of second gears 4042, driving another first gear 4041 to rotate in the same direction as a certain direction, so that both ends of the flexible display panel Bend in the same two directions.
  • the number of second gears 4042 may be two.
  • the two second gears 4042 mesh with the two first gears 4041 in one-to-one correspondence, and the two second gears 4042 mesh with each other.
  • the co-moving component 4 may also include a first connection part 401 , which is provided on a side of the support plate 201 close to the extension plate.
  • the first connection part 401 is provided as a protrusion perpendicular to the support plate 201 .
  • the co-moving component 4 may also include a second connecting part 402.
  • the second connecting part 402 is arranged in a plate shape.
  • the second connecting part 402 is sleeved on the connecting rod 301 and extends along the first direction toward the side close to the supporting plate 201. .
  • the second connecting part 402 is arranged opposite to the first connecting part 401.
  • the second connecting part 402 is provided with a strip chute 4011.
  • the strip chute 4011 moves in the direction close to the mounting base 1 to the side away from the support plate 201.
  • the first connecting part 401 is provided with a mounting hole, and a pin 403 is provided in the mounting hole.
  • One end of the pin 403 is fixed in the mounting hole, and the other end is slidably connected in the strip slide groove 4011.
  • the support plate 201 When the support plate 201 rotates, it drives the pin 403 to move in the strip chute 4011. When the pin 403 moves to a certain position, it drives the sleeve 302 to rotate, so that the sleeve 302 can rotate synchronously with the support plate 201, and the sleeve 302 drives the matching
  • the connecting rod 301 rotates, and the first gear 4041 installed on the connecting rod 301 rotates.
  • the first gear 4041 is transmitted to another first gear 4041 through the gear set, and the other first gear 4041 drives the other connecting rod 301 to rotate, and then
  • the sleeve 302 fixed on another connecting rod 301 is driven to rotate, and the sleeve 302 drives the corresponding support plate 201 to rotate to fold the flexible display panel connected to the two support plates 201 .
  • a row of first saw teeth can also be provided in the strip chute 4011, and a circle of second saw teeth matching the first saw teeth can be provided on the pin 403.
  • the second saw teeth cooperate with the first saw teeth to prevent the pin from 403 slides when rotating in the strip chute 4011.
  • the area of the support plate 201 facing the sliding plate 202 and the elastic pressing mechanism 204 is lower than the remaining area of the supporting plate 201 to form an installation cavity for disposing the sliding plate 202 and the elastic pressing mechanism 204 .
  • the sliding plate 202 and the elastic pressing mechanism 204 are arranged in the installation cavity to ensure the strength of the supporting plate 201 as much as possible without increasing the thickness of the supporting plate 201.
  • the rotating module 2 may also include a cover plate, which is provided on the side of the sliding plate 202 and the elastic pressing mechanism 204 away from the support plate 201 .
  • Embodiments of the present disclosure provide a foldable flexible display device.
  • the foldable flexible display device includes an upper rotating shaft mechanism.
  • the foldable flexible display device also includes other necessary components and components, taking a display as an example, such as a flexible display panel, a circuit board, a power cord, a casing, etc., and the technology in the art Personnel can make corresponding supplements according to the specific usage requirements of the foldable flexible display device, which will not be described again here.
  • Foldable flexible display devices can be traditional electronic devices, such as mobile phones, computers, televisions, and camcorders, or emerging wearable devices, such as VR glasses, which are not listed here.
  • the foldable flexible display device generally includes two rotating shaft mechanisms 10 , and may also include a connecting plate provided between the two rotating shaft mechanisms 10 along the second direction.
  • the connecting plates are respectively connected to the two rotating shaft mechanisms 10 .
  • the baffles are connected to form the baffle structure 20 .
  • the foldable flexible display device also includes a covering structure 30 .
  • the covering structure 30 is located on the side of the rotating shaft mechanism 10 away from the baffle structure 20 .
  • the baffle structure 20 , the two rotating shaft mechanisms 10 and the covering structure 30 are assembled to form the hinge mechanism 100 .
  • the foldable flexible display device when the foldable flexible display device is a mobile phone, the foldable flexible display device also includes two middle frames 200 arranged at intervals.
  • the hinge mechanism 100 is fixedly connected to the two middle frames 200 respectively.
  • the two middle frames 200 are fixedly connected to each other.
  • the two support plates of the rotating shaft mechanism are fixedly connected to the two middle frames 200 respectively.
  • the foldable flexible display device may also include a flexible display panel 300.
  • the flexible display panel 300 is attached to the hinge mechanism 100 and the side of the two middle frames 200 facing away from the mounting plate of the rotating shaft mechanism.
  • the two middle frames 200 face away from the flexible display panel 300.
  • the back shell of the mobile phone is set on one side.

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Abstract

一种转轴机构(10)及可折叠柔性显示装置，转轴机构(10)的弹性压紧机构(204)挤压滑动板(202)，使得凸出部(2021)与第一限位部(2011)抵靠，滑动板(202)远离安装座(1)的一端与第二限位部(2012)间隔开。在外力的作用下将支撑板(201)相互靠近，将柔性显示面板(300)贴附于支撑板(201)的一面。在对柔性显示面板(300)进行弯折时，支撑板(202)相互靠近，凸出部(2021)与第一限位部(2011)的距离随着支撑板(201)的转动逐渐减小。而支撑板(201)通常与中框(200)连接，柔性显示面板(300)贴附于中框(200)上，在弹性压紧机构(204)的弹力作用下，柔性显示面板(300)始终保持拉紧绷直的状态。

Description

转轴机构及可折叠柔性显示装置 技术领域
本公开涉及显示技术领域，具体而言，涉及一种转轴机构及可折叠柔性显示装置。
背景技术
柔性显示屏具有可弯折的性能，使得搭载柔性显示屏的智能终端，例如智能手机和笔记本产品，在折叠和展开状态之间实现切换成为可能。
目前，折叠手机或折叠笔记本使用一段时间后均会出现不同程度的折痕。因为铰链机构展开或者闭合的过程中，使柔性显示面板弯折区的长度变化。柔性显示面板展平时，弯折区的长度与铰链机构的宽不一致，由于柔性显示面板的强度相比于铰链机构的强度更弱，所以柔性显示面板出现凸起或者凹陷的折痕。
需要说明的是，在上述背景技术部分公开的信息仅用于加强对本公开的背景的理解，因此可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本公开的目的在于克服消除由于柔性显示面板弯折区的长度与铰链机构的宽度不一致，导致柔性显示面板出现凸起或者凹陷的折痕的问题，提供一种能在任意折叠角度固定的转轴机构及可折叠柔性显示装置。
根据本公开的一个方面，提供一种转轴机构，包括安装座和至少一组转动组件，每组转动组件包括两个转动模块，两个转动模块沿第一方向对称连接于安装座相对的两侧，转动模块包括支撑板、滑动板和弹性压紧机构，支撑板可转动地连接于安装座，支撑板的一面用于支撑柔性显示面板，支撑板与一面正对的另一面设有第一限位部和第二限位部，第一限位部和第二限位部沿第一方向间隔设置；滑动板一部分可转动地连接于安装座，另一部分滑动连接于支撑板，滑动板的转轴的延伸方向 与支撑板的转轴的延伸方向均沿第二方向设置且相互平行，第二方向垂直于第一方向，滑动板靠近安装座的部分设有凸出部，凸出部沿第二方向延伸，且位于第一限位部远离安装座的一侧，滑动板远离安装座的一端与第二限位部相对；弹性压紧机构，沿第二方向设置，弹性压紧机构的一端固定连接于滑动板，另一端滑动连接于支撑板，弹性压紧机构挤压滑动板，使得凸出部与第一限位部抵靠，滑动板远离安装座的一端与第二限位部间隔开，滑动板远离固定座的一端与第二限位部之间的距离正比于支撑板所能转动的最大角度。
在本公开的一个实施例中，转轴机构还包括扭力组件，扭力组件包括连接杆、套筒、压板、第一弹性件和限位结构，连接杆连接于安装座，且连接杆的延伸方向沿第二方向设置；套筒固定于连接杆外侧，且套筒能够与支撑板同步转动；压板套设于连接杆，且与连接杆的周向位置固定，压板抵靠于套筒远离安装座的一侧；第一弹性件抵靠于压板远离安装座的一侧，且第一弹性件的远离安装座的一端固定设置；限位结构抵靠于第一弹性件远离安装座的一侧，限位结构固定于连接杆；压板与套筒之间设有定位结构，以使得套筒停止转动时，第一弹性件挤压压板，固定压板与套筒的旋转位置。
在本公开的一个实施例中，定位结构包括多个凹槽和多个凸起，多个凹槽在压板的与套筒接触的一面沿圆周方向设置；多个凸起设于套筒上，与多个凹槽配合。
在本公开的一个实施例中，定位结构包括多个凹槽和多个凸起，多个凹槽在套筒的与压板接触的一面沿圆周方向设置；多个凸起设于压板上，与多个凹槽配合。
在本公开的一个实施例中，限位结构包括阻挡件和锁紧件，阻挡件套设于连接杆，且抵靠于第一弹性件远离安装座的一侧；锁紧件安装于连接杆，连接杆远离阻挡件的一侧设有卡槽，锁紧件设于卡槽内，并抵靠于阻挡件远离安装座的一侧。
在本公开的一个实施例中，扭力组件还包括导向柱和第二弹性件，导向柱固定于阻挡件靠近安装座的一侧，且穿过压板；第二弹性件套设于导向柱外，且分别与阻挡件和压板抵靠。
在本公开的一个实施例中，弹性压紧机构沿第二方向设于滑动板的两侧，弹性压紧机构包括安装轴和第三弹性件，安装轴的一端固定连接于凸出部远离安装座的一侧，另一端与第二限位部间隙配合；第三弹性件套设于安装轴外，第三弹性件的两端分别抵靠于第一限位部和第二限位部上。
在本公开的一个实施例中，转轴机构还包括同动组件，同动组件用于带动两个转动模块的连接杆、套筒以及支撑板同步转动。
在本公开的一个实施例中，同动组件包括传动机构，传动机构包括两个第一齿轮和齿轮组，两个第一齿轮一一对应地连接于两个连接杆，且第一齿轮与连接杆同轴设置；齿轮组啮合于两个第一齿轮之间，在一个第一齿轮转动时，齿轮组带动另一个第一齿轮转动。
在本公开的一个实施例中，齿轮组包括两个第二齿轮，两个第二齿轮一一对应地与两个第一齿轮啮合，且两个第二齿轮相互啮合。
在本公开的一个实施例中，同动组件还包括第一连接部、第二连接部和销轴，第一连接部设于支撑板，第一连接部上设有条形滑槽，条形滑槽沿靠近安装座的方向，向远离支撑板的一侧逐渐倾斜；第二连接部套设于连接杆上，且沿第一方向向靠近支撑板的一侧延伸，第二连接部上设有安装孔；销轴一端固定于安装孔内，另一端滑动连接于条形滑槽内。
在本公开的一个实施例中，安装座设有弧形凹陷和弧形凸起，弧形凹陷与弧形凸起之间形成弧形容腔，滑动板与安装座连接的部分具有弧形连接部，弧形连接部转动连接于弧形容腔内。
在本公开的一个实施例中，滑动板与支撑板连接的部分沿第一方向设有多个条形孔，各条形孔内分别设有一限位件，限位件远离滑动板的一端任意两点之间的距离均大于条形孔的宽度。
在本公开的一个实施例中，转动模块还包括盖板，盖板设于滑动板和弹性压紧机构远离支撑板的一侧。
在本公开的一个实施例中，支撑板与滑动板和弹性压紧机构正对的区域低于支撑板的其余区域，以形成用于设置滑动板和弹性压紧机构的安装腔。
在本公开的一个实施例中，转轴机构包括两组转动组件，两组转动组件沿第二方向对称设于安装座的两侧。
根据本公开的另一个方面，提供一种可折叠柔性显示装置，包括本公开的一个方面的转轴机构。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并与说明书一起用于解释本公开的原理。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为相关技术涉及的可折叠柔性显示装置被使用一段时间后的结构示意图。
图2为本公开实施例涉及的转轴机构的立体结构图。
图3为本公开实施例涉及的转轴机构的部分结构的立体图。
图4为本公开实施例涉及的转轴机构的部分结构的***图。
图5为本公开实施例涉及的转轴机构的部分结构的俯视图。
图6为图5的A-A剖视图。
图7为本公开实施例涉及的转轴机构的转动状态的示意图。
图8为本公开实施例涉及的铰链机构的***图。
图9为本公开实施例涉及的可折叠柔性显示装置的结构示意图。
图中：1-安装座，11-端板，12-侧板，13-安装板，131-弧形凹陷，14-挡板，141-弧形凸起，142-凸块，2-转动模块，201-支撑板，2011-第一限位部，2012-第二限位部，2013-缺口，202-滑动板，2021-凸出部，2022-条形孔，2023-弧形连接部，2024-平直连接部，203-限位件，204-弹性压紧机构，2041-第三弹性件，2042-安装轴，3-扭力组件，301-连接杆，302-套筒，303-压板，304-第一弹性件，305-限位结构，306-导向柱，307-第二弹性件，4-同动组件，401-第一连接部，4011-条形滑槽，402- 第二连接部，403-销轴，404-传动机构，4041-第一齿轮，4042-第二齿轮，4043-齿轮座，10-转轴机构，20-挡板结构，30-包覆结构，100-铰链机构，200-中框，300-柔性显示面板。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而，示例实施方式能够以多种形式实施，且不应被理解为限于在此阐述的实施方式；相反，提供这些实施方式使得本公开将全面和完整，并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构，因而将省略它们的详细描述。此外，附图仅为本公开的示意性图解，并非一定是按比例绘制。
虽然本说明书中使用相对性的用语，例如“上”“下”来描述图标的一个组件对于另一组件的相对关系，但是这些术语用于本说明书中仅出于方便，例如根据附图中所述的示例的方向。能理解的是，如果将图标的装置翻转使其上下颠倒，则所叙述在“上”的组件将会成为在“下”的组件。当某结构在其它结构“上”时，有可能是指某结构一体形成于其它结构上，或指某结构“直接”设置在其它结构上，或指某结构通过另一结构“间接”设置在其它结构上。
用语“一个”、“一”、“该”、“所述”和“至少一个”用以表示存在一个或多个要素/组成部分/等；用语“包括”和“具有”用以表示开放式的包括在内的意思并且是指除了列出的要素/组成部分/等之外还可存在另外的要素/组成部分/等；用语“第一”、“第二”和“第三”等仅作为标记使用，不是对其对象的数量限制。
折叠手机或折叠笔记本使用一段时间后均会出现不同程度的折痕。目前市场上销售的折叠产品主要有水滴型折叠产品和U型折叠产品。其中，水滴型铰链机构与柔性显示面板的匹配性更好，因而水滴型折叠产品相比U型折叠产品折痕较轻微，但水滴型铰链机构结构复杂，成本太高，一般水滴型铰链机构约为U型铰链机构成本的3倍。
相关技术中，折叠产品使用前，铰链机构100的宽度与柔性显示面板300弯折区的长度一样，柔性显示面板300平直无折痕。折叠产品被 使用一段时间后如图1所示，由于在展开或者闭合过程中，铰链机构100的宽度与柔性显示面板300的弯折区的长度不匹配，铰链机构100会拉扯或者挤压柔性显示面板300，导致柔性显示面板300的弯折区的长度被拉长，使柔性显示面板300弯折区的长度变化。柔性显示面板300再展平到180°时，柔性显示面板300的弯折区的长度与铰链机构100的宽度不一致，由于柔性显示面板300的强度相比于铰链机构100的强度更弱，所以柔性显示面板会出现凸起或者凹陷的折痕。
基于此，本公开实施方式提供了一种转轴机构。如图2至图7所示，该转轴机构包括安装座1和至少一组转动组件，每组转动组件包括两个转动模块2，两个转动模块2沿第一方向对称连接于安装座1相对的两侧，转动模块2包括支撑板201、滑动板202和弹性压紧机构204，支撑板201可转动地连接于安装座1，支撑板201的一面用于支撑柔性显示面板，支撑板201与一面正对的另一面设有第一限位部2011和第二限位部2012，第一限位部2011和第二限位部2012沿第一方向间隔设置；滑动板202一部分可转动地连接于安装座1，另一部分滑动连接于支撑板201，滑动板202的转轴的延伸方向与支撑板201的转轴的延伸方向均沿第二方向设置且相互平行，第二方向垂直于第一方向，滑动板202靠近安装座1的部分设有凸出部2021，凸出部2021沿第二方向延伸，且位于第一限位部2011远离安装座1的一侧，滑动板202远离安装座1的一端与第二限位部2012相对；弹性压紧机构204沿第二方向设置，弹性压紧机构204的一端固定连接于滑动板202，另一端滑动连接于支撑板201，弹性压紧机构204挤压滑动板202，使得凸出部2021与第一限位部2011抵靠，滑动板202远离安装座1的一端与第二限位部2012间隔开，滑动板202远离固定座的一端与第二限位部2012之间的距离正比于支撑板201所能转动的最大角度。
支撑板201的一面设有第一限位部2011和第二限位部2012。滑动板202靠近安装座1的部分设有凸出部2021，滑动板202远离安装座1的一端与第二限位部2012相对。弹性压紧机构204的一端固定连接于滑动板202，另一端滑动连接于支撑板201，弹性压紧机构204挤压滑动板202，使得凸出部2021与第一限位部2011抵靠，滑动板202远离安装座 1的一端与第二限位部2012间隔开。在外力的作用下将支撑板201相互靠近，例如，可以是通过治具实现，具体是使用治具挤压两个支撑板201，使两个支撑板向安装座1靠近，此时第二限位部2012向靠近滑动板202远离固定座的一端滑动。当滑动板202远离固定座的一端与第二限位部2012抵靠时，将柔性显示面板贴附于支撑板201的一面。在对柔性显示面板进行弯折时，支撑板201相互靠近，凸出部2021与第一限位部2011的距离随着支撑板201的转动逐渐减小。而支撑板201通常与中框连接，柔性显示面板贴附于中框上，在弹性压紧机构204的弹力作用下，柔性显示面板始终保持拉紧绷直的状态。
需要说明的是，第一方向为图5中示出的x方向，第二方向为图5中示出的y方向。
该转轴机构包括安装座1和两组转动组件，两组转动组件沿第二方向对称设于安装座1的两侧。每组转动组件包括两个转动模块2，两个转动模块2沿第一方向对称连接于安装座1相对的两侧，处于安装座1同一侧的两个转动模块的支撑板201可以一体成型。每组转动组件中两个转动模块2的结构和安装方式相同。两个转动模块2可以分别控制，也可以联动控制。
如图2至图7所示，安装座1包括两个端板11、两个侧板12、一个安装板13和一个挡板14，两个端板11为相对设置的两个平板，两个侧板12为两个相对设置的弧形板，安装板13和挡板14为相对设置的两个平板，两个侧板12和一个安装板13依次首尾连接，连接于两个端板11之间，且垂直于两个端板11，挡板14连接于两个侧板12和两个端板11远离安装板13的一侧。
两个支撑板201与上述安装板13相对设置，且位于挡板14沿第一方向相对的两侧，支撑板201一部分可转动地连接于安装座1。其中，两个支撑板201设于同一平面，其中两个支撑板201与安装座1连接的部分相互靠近，与挡板14相互配合，使得两个支撑板201与挡板14近似拼成一块大支撑板，柔性显示面板贴合于该大支撑板背离安装板13的一侧。
需要说明的是，挡板14沿第一方向相对的两侧分别设有第一连接结 构，两个支撑板201与挡板14相互靠近的一侧分别设有第二连接结构，第一连接结构包括多个凸块142，第二连接结构包括与各凸块142相互匹配的多个缺口2013，其中第一连接结构的多个凸块142设于第二连接结构对应的缺口2013内。可以理解的是，通过第一连接结构和第二连接结构实现两个支撑板201与挡板14的插齿配合。
滑动板202一部分可转动地连接于安装座1，另一部分滑动连接于支撑板201，滑动板202的转轴的延伸方向与支撑板201的转轴的延伸方向均沿第二方向设置且相互平行，第二方向垂直于第一方向。具体地，在安装板13上设置弧形凹陷131，滑动板202与安装座1连接的部分具有弧形连接部2023，弧形连接部2023转动连接于弧形凹陷131内，挡板14与安装板13相对的一侧设有弧形凸起141，该弧形凸起141与上述弧形凹陷131相互匹配，弧形连接部2023被限位于弧形凸起141与弧形凹陷131之间的弧形容腔内。滑动板202还包括平直连接部2024，平直连接部2024连接于弧形连接部2023沿第一方向远离安装座1的一端。平直连接部2024自安装座1的侧板12穿出，与支撑板201滑动连接。
支撑板201用于支撑柔性显示面板的一面正对的另一面设有第一限位部2011和第二限位部2012，第一限位部2011和第二限位部2012沿第一方向间隔设置。平直连接部2024靠近安装座1的部分设有沿凸出部2021，凸出部2021沿第二方向向平直连接部2024两侧延伸，凸出部2021位于第一限位部2011远离安装座1的一侧，滑动板202远离安装座1的一端与第二限位部2012相对。平直连接部2024位于凸出部2021远离安装座1一侧的宽度小于位于凸出部2021靠近安装座1一侧的宽度。
弹性压紧机构204沿第二方向设于平直连接部2024的两侧。弹性压紧机构204包括第三弹性件2041和安装轴2042，安装轴2042的一端固定连接于凸出部2021远离安装座1的一侧，另一端与第二限位部2012间隙配合，且能相对于支撑板201滑动，第三弹性件2041套设于安装轴2042外。第三弹性件2041挤压支撑板201，使得第一限位部2011与凸出部2021抵靠，滑动板202远离安装座1的一端与第二限位部2012间隔开，滑动板202远离固定座的一端与第二限位部2012之间的距离正比于支撑板201所能转动的最大角度A。
为了保证滑动板202与支撑板201的配合可靠性，滑动板202与支撑板201连接的部分沿第一方向设有多个条形孔2022，各条形孔2022内分别设有一限位件203，限位件203穿过条形孔2022与支撑板201固定。限位件203远离滑动板202的一端任意两点之间的距离均大于条形孔2022的宽度，条形孔2022的宽度的长度通常大于等于滑动板202远离固定座的一端与第二限位部2012之间的距离。需要说明的是，条形孔2022的长度指的是第一方向的尺寸，条形孔2022的宽度指的是第二方向的尺寸。
转轴机构还包括扭力组件3，扭力组件3包括连接杆301、套筒302、压板303、第一弹性件304和限位结构305，连接杆301连接于安装座1，且连接杆301的延伸方向沿第二方向设置；套筒302固定于连接杆301外侧，且套筒302能够与支撑板201同步转动；压板303套设于连接杆301，且与连接杆301的周向位置固定，压板303抵靠于套筒302远离安装座1的一侧；第一弹性件304抵靠于压板303远离安装座1的一侧，且第一弹性件304的远离安装座1的一端固定设置；限位结构305抵靠于第一弹性件304远离安装座1的一侧，限位结构305固定于连接杆301；压板303与套筒302之间设有定位结构，以使得套筒302停止转动时，第一弹性件304挤压压板303，固定压板303与套筒302的旋转位置。
连接杆301可以穿过其中一个端板11，还可以将连接杆301与弧形凸起141连接。能够理解的是，连接杆301可以相对安装座1转动。前面提到连接杆301的延伸方向与支撑板201的转轴的延伸方向相同，因此连接杆301的延伸方向垂直于端板11。可以将连接杆301的延伸方向与弧形凸起141的转轴的延伸方向设于相同的轴线上，也可以将连接杆301的延伸方向与弧形凸起141的转轴的延伸不同的轴线上。
套筒302套设于连接杆301的外侧，当连接杆301可以相对安装座1转动时，套筒302可以相对连接杆301固定，例如，将套筒302与连接杆301过盈配合，使得套筒302可以随连接杆301一起转动。可以在连接杆301与安装座1之间设置轴承，将连接杆301与安装座1转动连接。
为了尽量缩短连接杆301的长度，缩小转轴机构的轴向尺寸，可以 将套筒302尽量靠近安装座1的端板11。可以理解的是，套筒302套设于连接杆301，相对连接杆301固定。
压板303抵靠于套筒302远离安装座1的一侧。需要说明的是，压板303可以沿连接杆301的轴向移动，但无法绕连接杆301转动。为了提高安装效率，两个转动模块2的压板303设置为一体，将压板303的两端分别套接于两个连接杆301上，可以理解的是，因为压板303同时与两个连接杆301配合，因此不会绕连接杆301转动。
在套筒302与压板303接触的一面沿圆周方向设置有多个凹槽，在压板303的与套筒302接触的一面沿圆周方向设置有多个凸起。各凸起可以伸入对应的凹槽内，使得套筒302与压板303沿圆周方向的相对位置固定。当然，也可以在压板303与套筒302接触的一面沿圆周方向设置有多个凹槽，对应的，在套筒302设置有与凹槽配合的凸起。可以通过设置凸起的凸出程度以及凹槽的深度，来控制压板303转动时所需的转动力的大小。
第一弹性件304套设于连接杆301上，在第一弹性件304远离安装座1的一侧设限位结构305，可以将限位结构305固定于连接杆301，从而实现对第一弹性件304的固定。限位结构305可以包括阻挡件，阻挡件套设于连接杆301，且抵靠于第一弹性件304远离安装座1的一侧。在其它可实现的实施方式中，阻挡件可以与连接杆301可拆卸连接，具体可以是连接杆301远离阻挡件的一侧设有卡槽，在卡槽内设锁紧件，锁紧件抵靠于阻挡件远离安装座1的一侧。
扭力组件3还包括还可以包括导向柱306和第二弹性件307，导向柱306固定于阻挡件靠近安装座1的一侧，且位于两个连接杆301之间，导向柱306穿过压板303，第二弹性件307套设于导向柱306外，且分别与阻挡件和压板303抵靠。该转轴机构通过增加弹性件的数量，而非弹性件的长度和直径，在不改变转轴机构整体尺寸的情况下，实现双倍的扭力。在增大扭力的同时，不增大转轴机构的尺寸，能保证折叠产品的轻薄化。
需要说明的是，第一弹性件304和第二弹性件307也可以采用其它安装方式，以第一弹性件304为例进行说明，可以在压板303和限位结 构305上分别设置安装座1，将第一弹性件304分别与两个安装座1进行连接。此处仅是示例性说明，并不对本公开的实施方式进行限定。第一弹性件304的远离安装座1的一端固定设置也可以采用其它方式，例如，将第一弹性件304远离安装座1的一端直接固定至连接杆301上，例如，通过焊接等方式将第一弹性件304与连接杆301固定。
第一弹性件304和第二弹性件307可以为弹簧，将阻挡件套接于连接杆301上。锁紧件可以设置为轴向挡圈，对应的在连接杆301上设置卡槽，将锁紧件卡装于上述凹槽内。为了提高安装效率，同样可以将两个转动模块2的限位结构305可以设置为一体，将阻挡件两端分别套接于两个连接杆301上。
锁紧件具有断开部，安装时，先将阻挡件套接于连接杆301上，再将锁紧件撑大套接于连接杆301上，然后将锁紧件滑动至卡槽位置，锁紧件会自动形变收缩至卡槽内，限定阻挡件的位置，防止其从卡槽内脱出。
在套筒302相对连接杆301固定的情况下，支撑板201转动时，带动套筒302及连接杆301转动，而压板303在圆周方向始终保持不动，因此套筒302相对压板303一直转动，当支撑板201在某一角度停止转动时，抵靠于压板303远离安装座1的一侧的第一弹性件304和第二弹性件307挤压压板303，使得压板303的凸起卡入套筒302的凹槽内，将套筒302的位置固定。
可以理解的是，连接杆301也可以相对安装座1固定，当连接杆301相对安装座1固定时，套筒302可以相对连接杆301转动。支撑板201转动时，带动套筒302绕连接杆301转动，当支撑板201在某一角度停止转动时，抵靠于压板303远离安装座1的一侧的第一弹性件304和第二弹性件307挤压压板303，使得压板303的凸起卡入套筒302的凹槽内，将套筒302的相对连接杆301的位置固定。
对两个转动模块2联动控制时，转轴机构还可以包括同动组件4，同动组件4用于带动两个转动模块2的连接杆301、套筒302以及支撑板201同步转动。同动组件4可以包括传动机构404，传动机构404连接于安装座1，传动机构404用于带动两个转动模块2的连接杆301和 套筒302同步转动。需要说明的是，在这里连接杆301可转动地连接于安装座1，套筒302与连接杆301过盈配合，目的在于通过一个转动模块2的连接杆301驱动另一个转动模块2的连接杆301转动，带动与另一个转动模块2的连接杆301配合的套筒302转动。
传动机构404设于套筒302与安装座1之间，传动机构404可以包括两个齿轮座4043、两个第一齿轮4041和齿轮组，两个连接杆301依次穿过一个齿轮座4043、两个第一齿轮4041和另一个齿轮座4043，齿轮组啮合于两个第一齿轮4041之间。即：两个第一齿轮4041一一对应地连接于两个连接杆301，且第一齿轮4041与连接杆301同轴设置，齿轮组啮合于两个第一齿轮4041之间，两个齿轮座4043分别沿第二方向设于第一齿轮4041和齿轮组两侧，可以对第一齿轮4041和齿轮组的轴向位置进行限定，保证第一齿轮4041与齿轮组之间的啮合。
当一个支撑板201转动时，带动套筒302随动，套筒302带动与其过盈配合的连接杆301转动，连接杆301带动与其同轴固定的一个第一齿轮4041转动，一个第一齿轮4041转动时驱动齿轮组转动，齿轮组驱动另一个第一齿轮4041转动，与另一个第一齿轮4041固定的连接杆301，及与连接杆301过盈配合的套筒302转动，从而带动另一个支撑板201转动。
齿轮组可以包括奇数个第二齿轮4042，奇数个第二齿轮4042最外侧的两个齿轮与两个第一齿轮4041啮合，且奇数个第二齿轮4042相互啮合。当一个支撑板201朝某一方向转动时，一个第一齿轮4041通过奇数个第二齿轮4042传动，驱动另一个第一齿轮4041沿与某一方向相反的方向转动，从而使得柔性显示面板两端朝相反的两个方向弯折。
齿轮组还可以包括偶数个第二齿轮4042。偶数个第二齿轮4042最外侧的两个齿轮与两个第一齿轮4041啮合，且偶数个第二齿轮4042相互啮合。当一个支撑板201朝某一方向转动时，一个第一齿轮4041通过偶数个第二齿轮4042传动，驱动另一个第一齿轮4041沿与某一方向相同的方向转动，从而使得柔性显示面板两端朝相同的两个方向弯折。具体第二齿轮4042的数量可以为两个，两个第二齿轮4042一一对应地与两个第一齿轮4041啮合，且两个第二齿轮4042相互啮合。
同动组件4还可以包括第一连接部401，第一连接部401设于支撑板201靠近延伸板的一侧，第一连接部401设置为垂直于支撑板201的凸起。同动组件4还可以包括第二连接部402，第二连接部402设置为板状，第二连接部402套设于连接杆301上，且沿第一方向向靠近支撑板201的一侧延伸。第二连接部402与第一连接部401相对设置，第二连接部402上设有条形滑槽4011，该条形滑槽4011沿靠近安装座1的方向，向远离支撑板201的一侧逐渐倾斜，第一连接部401上设有安装孔，安装孔内设置销轴403，将销轴403一端固定于安装孔内，另一端滑动连接于条形滑槽4011内。
支撑板201转动时带动销轴403在条形滑槽4011移动，销轴403移动到一定位置时驱动套筒302转动，使得套筒302能够与支撑板201同步转动，套筒302带动与其配合的连接杆301转动，安装于连接杆301上的第一齿轮4041转动，该第一齿轮4041通过齿轮组传动至另一个第一齿轮4041，另一个第一齿轮4041带动另一个连接杆301转动，进而带动固定于另一个连接杆301上的套筒302转动，该套筒302带动对应的支撑板201转动，以对与两个支撑板201连接的柔性显示面板进行折叠。在上述基础上，还可以在条形滑槽4011内设置一排第一锯齿，销轴403上设置一圈与第一锯齿匹配的第二锯齿，第二锯齿与第一锯齿配合，防止销轴403在条形滑槽4011内转动时发生滑动。
支撑板201与滑动板202和弹性压紧机构204正对的区域低于支撑板201的其余区域，以形成用于设置滑动板202和弹性压紧机构204的安装腔。将滑动板202和弹性压紧机构204设置于该安装腔内，在尽量保证支撑板201强度的同时，不增加支撑板201的厚度。除此之外，转动模块2还可以包括盖板，盖板设于滑动板202和弹性压紧机构204远离支撑板201的一侧。
本公开实施方式提供了一种可折叠柔性显示装置。可折叠柔性显示装置包括上面的转轴机构。
需要说明的是，该可折叠柔性显示装置除了转轴机构以外，还包括其他必要的部件和组成，以显示器为例，具体例如柔性显示面板、电路板、电源线、外壳，等等，本领域技术人员可根据该可折叠柔性显示装 置的具体使用要求进行相应地补充，在此不再赘述。
可折叠柔性显示装置可以是传统电子设备，例如：手机、电脑、电视和摄录放影机，也可以是新兴的穿戴设备，例如VR眼镜，在此不一一进行列举。
如图8所示，该可折叠柔性显示装置一般包括两个转轴机构10，还可以包括沿第二方向设于两个转轴机构10之间的连接板，连接板分别与两个转轴机构10的挡板连接，形成挡板结构20。可折叠柔性显示装置还包括包覆结构30，包覆结构30设于转轴机构10远离挡板结构20的一侧，挡板结构20、两个转轴机构10及包覆结构30装配形成铰链机构100。
如图9所示，当该可折叠柔性显示装置为手机时，该可折叠柔性显示装置还包括间隔设置的两个中框200，铰链机构100分别与两个中框200固定连接，具体是两个转轴机构的两个支撑板分别与两个中框200固定连接。可折叠柔性显示装置还可以包括柔性显示面板300，柔性显示面板300贴合于铰链机构100及两个中框200背离转轴机构的安装板的一侧，两个中框200背离柔性显示面板300的一侧设置手机的后壳。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由所附的权利要求指出。

Claims (17)

  1. 一种转轴机构，其中，包括：
    安装座，
    至少一组转动组件，每组所述转动组件包括两个转动模块，两个所述转动模块沿第一方向对称连接于所述安装座相对的两侧，所述转动模块包括：
    支撑板，可转动地连接于所述安装座，所述支撑板的一面用于支撑柔性显示面板，所述支撑板与所述一面正对的另一面设有第一限位部和第二限位部，所述第一限位部和所述第二限位部沿所述第一方向间隔设置；
    滑动板，一部分可转动地连接于所述安装座，另一部分滑动连接于所述支撑板，所述滑动板的转轴的延伸方向与所述支撑板的转轴的延伸方向均沿第二方向设置且相互平行，所述第二方向垂直于所述第一方向，所述滑动板靠近所述安装座的部分设有凸出部，所述凸出部沿所述第二方向延伸，且位于所述第一限位部远离所述安装座的一侧，所述滑动板远离所述安装座的一端与所述第二限位部相对；
    弹性压紧机构，沿所述第二方向设置，所述弹性压紧机构的一端固定连接于所述滑动板，另一端滑动连接于所述支撑板，所述弹性压紧机构挤压所述滑动板，使得所述凸出部与所述第一限位部抵靠，所述滑动板远离所述安装座的一端与所述第二限位部间隔开，所述滑动板远离所述固定座的一端与所述第二限位部之间的距离正比于所述支撑板所能转动的最大角度。
  2. 根据权利要求1所述的转轴机构，其中，还包括扭力组件，所述扭力组件包括：
    连接杆，连接于所述安装座，且所述连接杆的延伸方向沿第二方向设置；
    套筒，固定于所述连接杆外侧，且所述套筒能够与所述支撑板同步转动；
    压板，套设于所述连接杆，且与所述连接杆的周向位置固定，所述压板抵靠于所述套筒远离所述安装座的一侧；
    第一弹性件，抵靠于所述压板远离所述安装座的一侧，且所述第一弹性件的远离所述安装座的一端固定设置；
    限位结构，抵靠于所述第一弹性件远离所述安装座的一侧，所述限位结构固定于所述连接杆；
    所述压板与所述套筒之间设有定位结构，以使得所述套筒停止转动时，所述第一弹性件挤压所述压板，固定所述压板与所述套筒的旋转位置。
  3. 根据权利要求2所述的转轴机构，其中，所述定位结构包括：
    多个凹槽，在所述压板的与所述套筒接触的一面沿圆周方向设置；
    多个凸起，设于所述套筒上，与多个所述凹槽配合。
  4. 根据权利要求2所述的转轴机构，其中，所述定位结构包括：
    多个凹槽，在所述套筒的与所述压板接触的一面沿圆周方向设置；
    多个凸起，设于所述压板上，与多个所述凹槽配合。
  5. 根据权利要求2所述的转轴机构，其中，所述限位结构包括：
    阻挡件，套设于所述连接杆，且抵靠于所述第一弹性件远离所述安装座的一侧；
    锁紧件，安装于所述连接杆，所述连接杆远离所述阻挡件的一侧设有卡槽，所述锁紧件设于所述卡槽内，并抵靠于所述阻挡件远离所述安装座的一侧。
  6. 根据权利要求5所述的转轴机构，其中，所述扭力组件还包括：
    导向柱，固定于所述阻挡件靠近所述安装座的一侧，且穿过所述压板；
    第二弹性件，套设于所述导向柱外，且分别与所述阻挡件和所述压板抵靠。
  7. 根据权利要求1所述的转轴机构，其中，所述弹性压紧机构沿第二方向设于所述滑动板的两侧，所述弹性压紧机构包括：
    安装轴，一端固定连接于所述凸出部远离所述安装座的一侧，另一端与所述第二限位部间隙配合；
    第三弹性件，套设于安装轴外，所述第三弹性件的两端分别抵靠于所述第一限位部和所述第二限位部上。
  8. 根据权利要求2所述的转轴机构，其中，所述转轴机构还包括同动组件，所述同动组件用于带动两个所述转动模块的所述连接杆、所述套筒以及所述支撑板同步转动。
  9. 根据权利要求8所述的转轴机构，其中，所述同动组件包括传动机构，所述传动机构包括：
    两个第一齿轮，一一对应地连接于两个所述连接杆，且所述第一齿轮与所述连接杆同轴设置；
    齿轮组，啮合于两个所述第一齿轮之间，在一个所述第一齿轮转动时，所述齿轮组带动另一个所述第一齿轮转动。
  10. 根据权利要求9所述的转轴机构，其中，
    所述齿轮组包括：
    两个第二齿轮，一一对应地与两个所述第一齿轮啮合，且两个所述第二齿轮相互啮合。
  11. 根据权利要求9所述的转轴机构，其中，所述同动组件还包括：
    第一连接部，设于所述支撑板，所述第一连接部上设有条形滑槽，所述条形滑槽沿靠近所述安装座的方向，向远离所述支撑板的一侧逐渐倾斜；
    第二连接部，套设于所述连接杆上，且沿所述第一方向向靠近所述支撑板的一侧延伸，所述第二连接部上设有安装孔；
    销轴，一端固定于所述安装孔内，另一端滑动连接于所述条形滑槽内。
  12. 根据权利要求1所述的转轴机构，其中，所述安装座设有弧形凹陷和弧形凸起，所述弧形凹陷与所述弧形凸起之间形成弧形容腔，所述滑动板与所述安装座连接的部分具有弧形连接部，所述弧形连接部转动连接于所述弧形容腔内。
  13. 根据权利要求1所述的转轴机构，其中，所述滑动板与所述支 撑板连接的部分沿所述第一方向设有多个条形孔，各所述条形孔内分别设有一限位件，所述限位件固定于所述支撑板上，所述限位件远离所述滑动板的一端任意两点之间的距离均大于所述条形孔的宽度。
  14. 根据权利要求1所述的转轴机构，其中，所述转动模块还包括盖板，所述盖板设于所述滑动板和所述弹性压紧机构远离所述支撑板的一侧。
  15. 根据权利要求1所述的转轴机构，其中，所述支撑板与所述滑动板和所述弹性压紧机构正对的区域低于所述支撑板的其余区域，以形成用于设置所述滑动板和所述弹性压紧机构的安装腔。
  16. 根据权利要求1所述的转轴机构，其中，所述转轴机构包括两组转动组件，两组所述转动组件沿第二方向对称设于所述安装座的两侧。
  17. 一种可折叠柔性显示装置，其中，包括权利要求1至16任一项所述的转轴机构。
PCT/CN2022/083796 2022-03-29 2022-03-29 转轴机构及可折叠柔性显示装置 WO2023184168A1 (zh)

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