WO2022151373A1 - 提高折叠屏幕稳定性的抗拉力结构及显示装置 - Google Patents

提高折叠屏幕稳定性的抗拉力结构及显示装置 Download PDF

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Publication number
WO2022151373A1
WO2022151373A1 PCT/CN2021/072217 CN2021072217W WO2022151373A1 WO 2022151373 A1 WO2022151373 A1 WO 2022151373A1 CN 2021072217 W CN2021072217 W CN 2021072217W WO 2022151373 A1 WO2022151373 A1 WO 2022151373A1
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WO
WIPO (PCT)
Prior art keywords
reinforcing rib
folding screen
stability
positioning block
improving
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PCT/CN2021/072217
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English (en)
French (fr)
Inventor
王宁
刘怡彤
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深圳市维世科技有限公司
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Application filed by 深圳市维世科技有限公司 filed Critical 深圳市维世科技有限公司
Priority to PCT/CN2021/072217 priority Critical patent/WO2022151373A1/zh
Publication of WO2022151373A1 publication Critical patent/WO2022151373A1/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
    • G09F9/302—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 characterised by the form or geometrical disposition of the individual elements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—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 being semiconductor devices, e.g. diodes

Definitions

  • the invention relates to the field of screen display, in particular to a tensile force structure and a display device for improving the stability of a folding screen.
  • LED display is a kind of flat panel display, which is composed of small LED module panels, and is used to display various information such as text, image, video, video signal and so on.
  • Existing display screens can be roughly divided into two types according to size, one is a large display screen, which is generally fixed on a wall facing the street and places information such as advertisements.
  • multiple display units are hinged up and down to form a foldable display screen. When in use, it can be expanded to form a whole display surface with multiple display units for display. After unfolding, because only the uppermost display unit is fixed, the other display units are unfolded downward one by one, resulting in excessive longitudinal tension of the folded screen, and the screen components are easily damaged.
  • the present invention proposes a tensile force structure and a display device to improve the stability of the folding screen.
  • the present invention proposes a tensile force structure for improving the stability of a folding screen, comprising: a plurality of reinforcing rib lines arranged longitudinally close to the back of the folding screen, and a lifting device connecting the top of the reinforcing rib lines to pull the reinforcing rib lines upward;
  • Each of the reinforcing rib lines is provided with a plurality of positioning blocks, and the back of the folding screen is provided with a plurality of limit seats matching the positioning blocks. The block cooperates with the limiting seat to provide upward supporting force for the folding screen.
  • the folding screen is composed of a plurality of display units hinged up and down, and a plurality of limit seats are horizontally spaced on the back of each of the display units, and a positioning block on the reinforcing rib line corresponds to a limit seat.
  • the reinforcing rib line passes through the limit seat, the positioning block is located below the corresponding limit seat, and when the reinforcing rib line is pulled upward, the positioning block is pressed against the limit seat. the underside of the seat.
  • an auxiliary reinforcing rib line is connected between the positioning block and the limiting seat, and the auxiliary reinforcing rib line is tight when the reinforcing rib line is pulled upward.
  • the auxiliary reinforcing rib wire is fixed on the limiting seat by screws.
  • the reinforcing rib line passes through the limiting seat, a chute for the positioning block to slide up and down is provided in the limiting seat, and the positioning block is installed in the chute.
  • each of the reinforcing rib lines is composed of a plurality of the sub-reinforcing rib lines that are fastened end to end, the ends of the sub-reinforcing rib lines are provided with a fastening seat, and two of the sub-reinforcing rib lines are The fastening seats of the rib lines are fastened together to form a positioning block.
  • the lifting device includes: a lifting plate horizontally connecting the tops of all reinforcing rib wires, a pulling wire connecting the lifting plate, and a motor arranged on the upper part of the lifting plate to drive the wire drum to rotate to tighten or release the pulling wire.
  • the reinforcing rib wire is a steel wire.
  • the present invention also provides a display device including a folding screen and the above-mentioned tensile force structure.
  • the present invention tightens the reinforcing steel wire upward through the pulling device, so that the positioning block on the reinforcing steel wire cooperates with the limit seat on the back of the folding screen, and provides an upward supporting force for the limit seat, which is the Each display unit provides an upward support force and distributes the force to the multiple limit seats on the back of the folding screen, so that the overall pulling force of the folding screen is balanced and not too concentrated, making the folding screen longitudinally resistant.
  • the reinforcing steel wire is released downward through the lifting device, and there is no force connection between the limit seat and the positioning block, so as to avoid affecting the retracting and folding action of the screen.
  • the head of the reinforcing steel wire is fixed on the load-bearing bar to ensure that each steel wire bears evenly.
  • FIG. 1 is a schematic structural diagram of a first embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of the cooperation between the limit seat and the positioning block according to the first embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a second embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of the cooperation between the limit seat and the positioning block according to the second embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a third embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of the cooperation between the limit seat and the positioning block according to the third embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of the third embodiment of the present invention when it is folded.
  • Fig. 8 is a partial enlarged view of Fig. 7;
  • FIG. 9 is a schematic diagram of the structure of the sub-reinforcing rib line fitting according to the present invention.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection or indirect connection through an intermediate medium, may be internal communication between two elements or an interaction relationship between the two elements.
  • installed may be a fixed connection or a detachable connection Connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection or indirect connection through an intermediate medium, may be internal communication between two elements or an interaction relationship between the two elements.
  • the present invention proposes a tensile force structure to improve the stability of the folded screen, including: a plurality of reinforcing rib lines 1 , a positioning block 2 , a limit seat 3 and a pulling device 4 .
  • the folding screen 5 is composed of a plurality of display units 51 hinged up and down, and the top of the folding screen 5 is provided with a support frame 6, and the uppermost display unit 51 is connected with the support frame 6 through a wire, so that the folding screen 5 is suspended.
  • the back of the folding screen 5 is provided with a plurality of limit seats 3 located at the positions where the reinforcing rib lines pass along the longitudinal direction. and spaced horizontally.
  • the top of the reinforcing rib wire 1 is connected to a pulling device 4, which can be installed on the support frame 6, and the pulling device 4 can be pulled upward to tighten the reinforcing rib wire 1, or downward after tightening the reinforcing rib wire 1 Release the rib wire 1.
  • a pulling device 4 can be installed on the support frame 6, and the pulling device 4 can be pulled upward to tighten the reinforcing rib wire 1, or downward after tightening the reinforcing rib wire 1 Release the rib wire 1.
  • the reinforcing rib line 1 is tightened upward by the pulling device 4, and the positioning block 2 on the reinforcing rib line 1 can cooperate with the limit seat 3 on the back of the folding screen 5, and the limit seat 3 provides an upward supporting force, That is to provide an upward supporting force for the entire folding screen 5, and distribute the force to the plurality of limit seats 3 on the back of the folding screen 5, so that the overall pulling force of the folding screen is balanced and not too concentrated.
  • the block display unit or the unit board is hung on the reinforcing rib line through the positioning block, so as to achieve the effect of enhancing the longitudinal tensile force of the folding screen.
  • the reinforcing rib line is released downward through the lifting device, and there is no force connection between the limit seat and the positioning block, so as to avoid affecting the retracting and folding action of the screen.
  • the folding screen 5 is composed of a plurality of display units 51 that are hinged up and down in series, that is, the first display unit and the second display unit at the top can be folded outward, and the second display unit and the third display unit can be folded inward.
  • the third display unit and the fourth display unit can be folded outwards and connected to the Nth display unit according to this rule.
  • the middle part of the back of each display unit 51 is provided with a plurality of limit seats 3 at horizontal intervals, and the reinforcing rib line 1 passes through the same straight upper limit seat 3 in the longitudinal direction, so that each positioning block 2 on the reinforcing rib line 1 can correspond to A limit seat 3 on a display unit 51 . Therefore, the block display unit 51 is hung on the reinforcing rib wire 1 through the positioning block 2 to achieve the effect of resisting tensile force.
  • the present invention proposes three embodiments in which the limit seat and the positioning block are matched, the details are as follows:
  • FIG. 1 and FIG. 2 show the first embodiment, the upper and lower end surfaces of the limit seat 3 are provided with through holes, and the reinforcing rib line 1 passes through the limit seat 3 through the through holes, so that the reinforcing rib lines are folded together.
  • the positioning block 2 is located below the corresponding limit seat 3. When the reinforcing rib line 1 is pulled upward, the positioning block 2 moves upward against the bottom surface of the limit seat 3 to provide a supporting force for the limit seat 3, so that the display unit 51 Attached to stiffener wire 1.
  • Figures 3 and 4 show the second embodiment, the reinforcing rib line 1 is in close contact with the limit seat 3 and vertically passes through the limit seat 3.
  • the limit seat 3 is provided with a limiter on one side of the reinforcing rib line 1.
  • the screw 31 is fixed on the seat.
  • the auxiliary reinforcing rib line 11 is fixed on the screw 31.
  • One end of the auxiliary reinforcing rib line 11 is connected with the screw 31, and the other end is connected with the positioning block 2.
  • the auxiliary reinforcing rib line 11 between the positioning block 2 and the screw 31 is tightened to provide upward pulling force for the limit seat 3, thereby offsetting the pulling force generated by the gravity of part or all of the display unit.
  • FIG. 5 and FIG. 6 show the third embodiment.
  • the upper and lower end surfaces of the limiting seat 3 are provided with through holes that can pass through the reinforcing rib line 1.
  • Slot 32, the upper and lower ends of the chute 32 are provided with a gap passing through the reinforcing rib line 1, the reinforcing rib line 1 passes through the through hole, and vertically passes through the gap between the upper and lower end faces of the chute 32, and the positioning block 2 is installed on the sliding
  • the groove 32 can be pulled up and down by the reinforcing rib wire 1 to slide up and down.
  • the positioning block 2 moves upward against the top wall of the chute 32 to provide a supporting force for the limiting seat 3 .
  • the positioning block 2 can be hidden in the chute to prevent foreign objects from being stuck. And the appearance is more concise and beautiful.
  • Embodiments 1 and 3 when the screen is folded, two adjacent display units 51 are folded inwardly and two adjacent display units 51 are folded outwardly.
  • the reinforcing steel wires are a group.
  • the steel wires are The required bending length is automatically supplied by the inner folding wire, which automatically ensures smooth folding.
  • Figures 7 and 8 specifically show schematic diagrams of the screen folded state of the third embodiment.
  • the positioning blocks 2 of the two display units 51 folded inward and the two display units 51 folded outward are located in the chute. Different positions to ensure smooth folding.
  • the positioning block 2 of the uppermost display unit in the figure is located in the middle of the chute 32 , and the reinforcing steel wire is automatically supplied to the middle display unit.
  • the positioning block 2 of the display unit in the middle position automatically slides to the lower end of the chute 32, and the positioning block 2 of the bottommost display unit automatically slides to the upper end of the chute 32, which is:
  • the two display units are folded outwards to provide extra reinforcing steel wire, which automatically ensures smooth folding.
  • Embodiment 2 when the screen is folded, the reinforcing steel wire is released by the pulling device, so as to avoid affecting the folding action of the screen.
  • the reinforcing rib wire 1 can be composed of a plurality of sub-reinforcing rib wires 12 connected end to end.
  • the buckle seat 13 at the end of the rib wire 12 is buckled together to form a positioning block 2 .
  • the material of the rib wire can be made of steel wire, and the buckle seat at the head and tail of the sub-reinforced steel wire is in the shape of a cuboid, with a semicircular notch on one side.
  • the semi-circular notch on the buckle seat 13 of the sub-reinforced steel wire located below is buckled with the steel wire part of the sub-reinforced steel wire located above, and the semi-circular notch on the buckle seat 13 of the sub-reinforced steel wire located above is fastened.
  • the notch is buckled with the steel wire part of the sub-strengthened steel wire located below, so that the buckle seat overlaps up and down to form a positioning block 2, which facilitates the installation of the reinforcing rib wire, and can be limited by the chute in the third embodiment.
  • this method increases the margin of the reinforcing steel wire, and the reinforcing steel wire can also be disassembled when the screen is folded.
  • the buckle seats at both ends of the sub-reinforced steel wire are still located in the chute, which is more convenient for installation.
  • a specific embodiment of the pulling device 4 includes: a pulling plate 41, a pulling wire 42, a wire drum and a motor.
  • the lifting plate 41 connects two pulling wires 42 to keep the lifting plate 41 horizontal, and at the same time, the lifting plate 41 connects the tops of all reinforcing rib wires 1 laterally, so that each reinforcing rib wire 1 is uniformly stressed and has the same height.
  • the motor and the wire reel are installed on the support frame 6. The motor can drive the wire reel to tighten and release the lifting wire, and drive the lifting plate to move upward or downward, that is, to tighten the reinforcing rib line upward or release the reinforcing rib downward. Wire.
  • the present invention also provides a display device including a folding screen and the above-mentioned tensile force structure. Through the tensile strength structure, the folding screen is evenly stressed when unfolded, preventing damage.

Abstract

本发明公开了一种提高折叠屏幕稳定性的抗拉力结构及显示装置，包括：贴紧折叠屏幕背面的加强筋线，每条加强筋线上设有多个定位块，折叠屏幕的背面设有多个配合定位块的限位座，折叠屏幕展开时通过提拉装置向上拉动加强筋线时定位块与限位座配合为折叠屏幕提供向上的支撑力。本发明通过在折叠屏幕的背面设置纵向的加强钢丝，并提供了三种在加强钢丝上设置定位块与折叠屏幕背面的限位座配合的方案，为每一块显示单元提供支撑，使折叠屏幕整体的受力均衡，不会过于集中，达到增强屏幕纵向抗拉力的作用。当折叠屏幕需要折叠时，提拉装置向下释放加强钢丝，限位座与定位块之间没有受力连接，避免影响屏幕的收放折叠动作。

Description

提高折叠屏幕稳定性的抗拉力结构及显示装置 技术领域
本发明涉及屏幕显示领域，特别是涉及一种提高折叠屏幕稳定性的抗拉力结构及显示装置。
背景技术
LED显示屏(LED display)是一种平板显示器，由一个个小的LED模块面板组成，用来显示文字、图像、视频、录像信号等各种信息的设备。现有的显示屏按照大小可大致分为两种，一种为大型显示屏，一般固定墙上面向街道，投放广告等信息。一种为小型显示屏，广泛应用于各种电子设备，而在一些特定的使用场景中，如商旅过程中，需要临时搭设场地演示相关信息，则小屏显示的效果不能满足实际需要，大型显示屏又不便于移动。
为了使大型显示屏便于搬运和收纳，现有技术中将多个显示单元上下铰接，拼接成一个可折叠的显示屏。使用时可以将其展开，由多个显示单元组成一整块显示面进行显示。展开后，因为仅固定最上面的一个显示单元，其他显示单元一个接一个向下展开，导致折叠屏幕的纵向拉力过大，屏幕组件容易损坏。
发明内容
本发明为了解决上述现有技术中折叠屏幕的纵向拉力过大容易损坏的技术问题，提出一种提高折叠屏幕稳定性的抗拉力结构及显示装置。
本发明采用的技术方案是：
本发明提出了一种提高折叠屏幕稳定性的抗拉力结构，包括：贴紧折叠屏幕背面沿纵向设置的多条加强筋线，连接加强筋线顶部可向上拉动加强筋线的提拉装置，每条所述加强筋线上设有多个定位块，所述折叠屏幕的背面设有多个配合定位块的限位座，折叠屏幕展开时通过提拉装置向上拉动加强筋线时所述定位块与所述限位座配合为折叠屏幕提供向上的支撑力。
进一步的，折叠屏幕由多个显示单元上下铰接组成，每块所述显示单元的背面都横向间隔设有多个限位座，所述加强筋线上的一个定位块对应一个限位座。
第一实施例，所述加强筋线穿过所述限位座，所述定位块位于与其所对应的所述限位座的下方，向上拉动加强筋线时所述定位块顶在所述限位座的底面。
第二实施例，所述定位块与限位座之间连接副加强筋线，向上拉动加强筋线时所述副加强筋线紧绷。所述副加强筋线通过螺钉固定在所述限位座上。
第三实施例，所述加强筋线穿过所述限位座，所述限位座内设有供所述定位块上下滑动的滑槽，所述定位块安装在所述滑槽内。
第三实施例进一步的技术方案，每根所述加强筋线由多根所述子加强筋线首尾扣接组成，所述子加强筋线端部设有扣接座，两根所述子加强筋线的扣接座扣接在一起形成定位块。
提拉装置包括：横向连接所有加强筋线顶端的提拉板，连接提拉板的提拉钢丝，设置在提拉板上部带动钢丝卷筒转动收紧或释放提拉钢丝的电机。
优选地，所述加强筋线为钢丝。
本发明还提出一种显示装置，包括折叠屏幕，还包括上述的抗拉力结构。
与现有技术比较，本发明通过提拉装置向上收紧加强钢丝，使加强钢丝上的定位块与折叠屏幕背面的限位座配合，为限位座提供向上的支撑力，即为折叠屏幕的每一块显示单元提供向上的支撑力，将力分散到折叠屏幕背面的多个限位座上，使折叠屏幕整体的拉力均衡，不会过于集中，使折叠屏幕纵向抗拉力。当折叠屏幕需要折叠收放时，通过提拉装置向下释放加强钢丝，限位座与定位块之间没有受力连接，避免影响屏幕的收放折叠动作。
加强钢丝的头部固定在承重条上，保证每条钢丝受力均匀。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明第一实施例的结构示意图；
图2为本发明第一实施例限位座与定位块配合的结构示意图；
图3为本发明第二实施例的结构示意图；
图4为本发明第二实施例限位座与定位块配合的结构示意图；
图5为本发明第三实施例的结构示意图；
图6为本发明第三实施例限位座与定位块配合的结构示意图；
图7为本发明第三实施例折叠时的结构示意图；
图8为图7的局部放大图；
图9为本发明子加强筋线配合的结构示意图。
具体实施方式
为了使本发明所要解决的技术问题、技术方案及有益效果更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本发明，并不用于限定本发明。
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者间接在该另一个元件上。当一个元件被称为是“连接于”另一个元件，它可以是直接连接到另一个元件或间接连接至该另一个元件上。
在本发明的描述中，需要理解的是，术语“中心”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
下面结合附图以及实施例对本发明的原理及结构进行详细说明。
如图1、图7所示，本发明提出了一种提高折叠屏幕稳定性的抗拉力结构，包括：多条加强筋线1、定位块2、限位座3和提拉装置4。折叠屏幕5由多个显 示单元51上下铰接组成，且折叠屏幕5的顶部设有支撑架6，最上方的一个显示单元51与支撑架6通过钢丝连接，使折叠屏幕5悬挂。折叠屏幕5的背面沿纵向方向设有多个位于强筋线经过位置的限位座3，加强筋线1沿纵向穿过限位座3，使加强筋线1贴紧折叠屏幕5的背面，并沿横向间隔。加强筋线1的顶部连接提拉装置4，提拉装置4可以安装在支撑架6上，提拉装置4可向上拉动，收紧加强筋线1，或在收紧加强筋线1后向下释放加强筋线1。折叠屏幕展开时，通过提拉装置4向上收紧加强筋线1，加强筋线1上的定位块2可与折叠屏幕5背面的限位座3配合，限位座3提供向上的支撑力，即为整个折叠屏幕5提供向上的支撑力，并将力分散到折叠屏幕5背面的多个限位座3上，使折叠屏幕整体的拉力均衡，不会过于集中。从而使块显示单元或单元板通过定位块挂在加强筋线上，达到增强折叠屏幕纵向抗拉力的作用。当折叠屏幕需要折叠收放时，通过提拉装置向下释放加强筋线，限位座与定位块之间没有受力连接，避免影响屏幕的收放折叠动作。
折叠屏幕5由多个显示单元51上下串联铰接组成，即最上方的第一个显示单元与第二个显示单元可向外折叠，第二个显示单元与第三个显示单元可向内折叠，第三个显示单元与第四个显示单元可向外折叠，按此规律连接至第N个显示单元。每块显示单元51的背面的中部横向间隔设置多个限位座3，加强筋线1沿纵向穿过同一条直线上限位座3，使加强筋线1上的每个定位块2都能对应一块显示单元51上的一个限位座3。从而使块显示单元51通过定位块2挂在加强筋线1上，达到抗拉力的效果。
本发明提出了三种限位座与定位块配合的实施例，具体如下：
图1、图2展示的为第一实施例，限位座3的上下两端面设有通孔，加强筋线1通过通孔从限位座3中穿过，使加强筋线贴合的折叠屏幕5的背面。定位块2 位于与其所对应的限位座3的下方，向上拉动加强筋线1时，定位块2向上运动顶在限位座3的底面，为限位座3提供支撑力，使显示单元51附着在加强筋线1上。
图3、图4展示的为第二实施例，加强筋线1贴紧限位座3，并竖直经过限位座3，限位座3上位于加强筋线1的一侧设有与限位座固定的螺钉31，螺钉31上固定有副加强筋线11，副加强筋线11的一端连接螺钉31，另一端连接定位块2，向上拉动加强筋线1时，定位块2向上运动，使定位块2与螺钉31之间的副加强筋线11紧绷，为限位座3提供向上的拉力，从而抵消部分或全部显示单元的重力所产生的拉力。
图5、图6展示的为第三实施例，限位座3的上下两端面设有通孔可穿过加强筋线1，限位座3内设有连通上下的通孔沿纵向设置的滑槽32，滑槽32的上下两端设置穿过加强筋线1的间隙，加强筋线1从通孔中穿过，并竖直穿过滑槽32上下端面的间隙，定位块2安装在滑槽32内可以通过加强筋线1拉动其上下滑动。向上拉动加强筋线1时，定位块2向上运动顶在滑槽32的顶壁上为限位座3提供支撑力。通过在限位座3内设置滑槽32的方式能够将定位块2隐藏在滑槽内，防止异物卡入。并且是外观更加简洁美观。
实施例1、3中，屏幕折叠时，两块相邻的显示单元51内折和两块相邻的显示单元51外折的加强钢丝为一组，两块相邻的显示单元外折时钢丝所需弯折长度自动由内折钢丝补给，自动保证折叠顺畅。
如图7、图8具体展示了第三实施例屏幕折叠状态的示意图，在屏幕折叠时内折的两块的显示单元51与外折的两块显示单元51的定位块2位于滑槽内的不同位置，保证折叠顺畅。如图8所示，图中位于最上方的显示单元的定位块2位于滑槽32的中间，自动补给加强钢丝给中间的显示单元。中间与最下方的 显示单元在折叠过程中，位于中间位置的显示单元的定位块2自动滑至滑槽32的下端，最下方的显示单元的定位块2自动滑至滑槽32的上端，为两块显示单元向外折叠提供余量的加强钢丝，从而自动保证折叠顺畅。
实施例2中，屏幕折叠时，通过提拉装置来释放加强钢丝，即可避免影响屏幕的折叠动作。
如图9所示，在实施例3中，加强筋线1为了便于安装，可以由多根子加强筋线12首尾扣接组成，子加强筋线的端部设有扣接座13，两根子加强筋线12端部的扣接座13扣接在一起形成一个定位块2。
筋线的材质具体可以选用钢丝，子加强钢丝首尾的扣接座呈长方体状，其一侧带有半圆形缺口。扣接时，位于下方的子加强钢丝的扣接座13上的半圆形缺口与位于上方的子加强钢丝的钢丝部分扣接，位于上方的子加强钢丝的扣接座13上的半圆形缺口与位于下方的子加强钢丝的钢丝部分扣接，使扣接座上下重叠组成定位块2，从而便于加强筋线的安装，同时应用在第三实施例中可以通过滑槽限位。且这种方式使加强钢丝的余量变多，在屏幕折叠时也可以拆分加强钢丝，同时子加强钢丝两端的扣接座还是位于滑槽内，安装时也更加方便。
提拉装置4的具体一个实施例包括：提拉板41、提拉钢丝42、钢丝卷筒和电机。提拉板41连接两根提拉钢丝42使提拉板41保持水平，同时提拉板41横向连接所有加强筋线1顶端，使每根加强筋线1受力均匀且高度一致。电机和钢丝卷筒安装在支撑架6上，电机可以带动钢丝卷筒收紧和释放提拉钢丝，带动提拉板向上运动或者向下运动，即向上拉紧加强筋线或向下释放加强筋线。
本发明还提出一种显示装置，包括折叠屏幕和上述的抗拉力结构。通过该抗拉力结构使折叠屏幕在展开时受力均匀，防止损坏。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种提高折叠屏幕稳定性的抗拉力结构，其特征在于，包括：贴紧折叠屏幕背面沿纵向设置的多条加强筋线，连接加强筋线顶部可向上拉动加强筋线的提拉装置，每条所述加强筋线上设有多个定位块，所述折叠屏幕的背面设有多个配合定位块的限位座，折叠屏幕展开时通过提拉装置向上拉动加强筋线时所述定位块与所述限位座配合为折叠屏幕提供向上的支撑力。
  2. 如权利要求1所述的提高折叠屏幕稳定性的抗拉力结构，其特征在于，所述折叠屏幕由多个显示单元上下铰接组成，每块所述显示单元的背面都横向间隔设有多个限位座，所述加强筋线上的一个定位块对应一个限位座。
  3. 如权利要求1所述的提高折叠屏幕稳定性的抗拉力结构，其特征在于，所述限位座内设有供所述定位块上下滑动的滑槽，所述定位块安装在所述滑槽内。
  4. 如权利要求1所述的提高折叠屏幕稳定性的抗拉力结构，其特征在于，所述定位块位于与其所对应的所述限位座的下方，向上拉动加强筋线时所述定位块顶在所述限位座的底面。
  5. 如权利要求1所述的提高折叠屏幕稳定性的抗拉力结构，其特征在于，所述定位块与限位座之间连接副加强筋线，向上拉动加强筋线时所述副加强筋线紧绷。
  6. 如权利要求5所述的提高折叠屏幕稳定性的抗拉力结构，其特征在于，所述副加强筋线通过螺钉固定在所述限位座上。
  7. 如权利要求3所述的提高折叠屏幕稳定性的抗拉力结构，其特征在于，每根所述加强筋线由多根所述子加强筋线首尾扣接组成，所述子加强筋线端 部设有扣接座，两根所述子加强筋线的扣接座扣接在一起形成定位块。
  8. 如权利要求1所述的提高折叠屏幕稳定性的抗拉力结构，其特征在于，所述提拉装置包括：横向连接所有加强筋线顶端的提拉板，连接提拉板的提拉钢丝，设置在提拉板上部带动钢丝卷筒转动收紧或释放提拉钢丝的电机。
  9. 如权利要求1所述的提高折叠屏幕稳定性的抗拉力结构，其特征在于，所述加强筋线为钢丝。
  10. 一种显示装置，包括折叠屏幕，其特征在于，还包括如权利要求1至9任一项所述的抗拉力结构。
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