WO2009046590A1 - Échelle pliante à double fonction - Google Patents

Échelle pliante à double fonction Download PDF

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Publication number
WO2009046590A1
WO2009046590A1 PCT/CN2007/003627 CN2007003627W WO2009046590A1 WO 2009046590 A1 WO2009046590 A1 WO 2009046590A1 CN 2007003627 W CN2007003627 W CN 2007003627W WO 2009046590 A1 WO2009046590 A1 WO 2009046590A1
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WO
WIPO (PCT)
Prior art keywords
ladder
page
dual
purpose extension
positioning key
Prior art date
Application number
PCT/CN2007/003627
Other languages
English (en)
French (fr)
Inventor
Wanxing Wang
Original Assignee
Wanxing Wang
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 Wanxing Wang filed Critical Wanxing Wang
Publication of WO2009046590A1 publication Critical patent/WO2009046590A1/zh

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/32—Ladders with a strut which is formed as a ladder and can be secured in line with the ladder

Definitions

  • the invention relates to the field of boarding ladders, in particular to a dual-purpose extension ladder which has telescopic characteristics and can form a double-armed herringbone independent ladder and a single-arm inclined frame ladder. It is suitable for safe handling and storage of items in the crotch at various heights and in various climbing situations. Background technique
  • the invention patent of X “herringbone extension ladder”, its structure includes a left and right ladder with a herringbone arrangement with a mounting angle, the left ladder and the top of the right ladder are connected to each other; the left ladder and the right ladder are each set
  • the front and rear poles have a symmetric layout, and the front and rear poles are spaced apart from each other with a plurality of crosspieces, and the two ends of the crosspiece are respectively connected with the front and rear poles.
  • the front and rear poles are composed of a plurality of sections of telescopic poles which are sleeved with each other; a connecting end piece with a vertical rod retracting device is arranged between the crosspiece and the front and rear poles.
  • a top connection port is disposed at an upper portion between the left and right ladders.
  • a mounting angle positioning beam is disposed between the left and right ladders.
  • the bottom of the pole is provided with a stepped leg parallel to the crosspiece.
  • the mounting angle positioning beam is composed of two half beam connections, and a lower side between the two half beams is provided with a pull ring that can gather the left and right ladders.
  • top end connecting beam and the mounting angle positioning beam disposed between the left and right ladders cannot be completely closed to each other when used in a single arm inclined type; therefore, when applied to a single arm When used in the case of a reclining ladder, it can only be used in the state of the double-armed herringbone independent ladder, so that it cannot fully expand the combined height of the left and right ladders; secondly, the top connecting beam and the The structural rigidity of the connection and positioning of the mounting angle positioning beam is not ideal, which will affect the stability of the ladder when boarding. Summary of the invention
  • An object of the present invention is to solve the above problems in the prior art and to provide a dual-purpose extension ladder which can fully expand the combined height of the left and right ladders and has a good rigidity of the connection structure.
  • the dual-purpose extension ladder includes a left ladder and a right ladder, and one end of the left ladder and the right ladder is provided with a connection component, wherein: the connection component is set to be A rotating device for relatively rotating between the left ladder and one end of the right ladder, the rotating device being provided with a rotary positioner.
  • the positioning device and the locator are configured to realize the full deployment of the combined height of the left ladder and the right ladder, and at the same time have better positioning rigidity.
  • the rotating device may be configured to be composed of a left ladder turning page and a right ladder turning page with the same rotating shaft, the left ladder turning page being connected with the left ladder top end, the right ladder turning page being connected with the right ladder top end
  • the left ladder page and the right ladder page are attached to each other perpendicular to the inner side surface of the rotating shaft. Since the left and right ladders are attached by the side surfaces of the left and right ladder pages, the contact surface between the plane and the plane is large, so the connection rigidity is good, the use is stable and reliable, and the left and right ladders can be improved.
  • the relative rotation between the two is possible.
  • the rotation positioner may be configured to have two first key grooves and a second key groove which are geometrically and dimension-matched at an angle on the same circumference of the left turn page head, and the right turn A positioning key with a spring bearing is disposed at an upper portion of the page corresponding to the first key groove; the first key groove and the second key groove cooperate with the positioning key.
  • the precision of the cooperation of the key and the keyway is high, so the positioning accuracy of the left and right ladder pages is good, and the positioning connection rigidity is good; and when the invention is used in the two-armed form and the single-arm inclined type
  • the transformation operation is quick and convenient.
  • One end of the positioning key can be connected to a spring, and the spring is placed in the spring support; the function is to quickly and correctly position the positioning key when the positioning key falls into the keyway, thereby ensuring the stability of the invention when the herringbone is deployed. Sex.
  • the first keyway may be disposed on the left ladder page and the right ladder page to form a herringbone expansion angle of 30 to 50 degrees to exactly match the positioning key.
  • the second keyway may be disposed at a position where the left ladder page and the right ladder page are expanded by 180 degrees to match the positioning key.
  • a position of the upper portion of the right turntable corresponding to the positioning key is provided with a lever, the end of the lever contacting the positioning key, and the other end of the lever is coupled to an operating link. It is very convenient and reliable to operate the two working states of the positioning key through the connecting rod.
  • the left ladder page and the left ladder, the right ladder page and the right ladder may be arranged as a screw connection, or may be arranged as a rivet connection; the screw connection is convenient to assemble.
  • the bottom of the right ladder is provided with a stepped foot for reinforcing the stability of use of the present invention as a reclining ladder.
  • the left step turntable and the left side of the left ladder perpendicular to the inner side of the rotating shaft may be disposed such that the plane teeth are meshed with each other; the plane teeth are arranged as square teeth or trapezoidal teeth or zigzag teeth;
  • the interconnect structure has a larger contact area and contact strength, and also has the left and right ladder deployment angle assisted positioning functions.
  • the invention adopts the rotary connecting device of the left ladder and the right ladder and the rotation positioning structure thereof, so that the combined height of the left and right ladders can be fully developed, thereby expanding the use range; secondly, the structural rigidity of the rotational positioning is good, in the double The use of the shifting operation in the two-armed and two-armed reclining modes is quick and easy, and the stability of use is also good.
  • FIG. 1 is a schematic structural view of a rotating device when a left ladder and a right ladder are in a collapsed state according to the present invention
  • FIG. 2 is a schematic structural view of a rotating device when the left ladder and the right ladder are in a herringbone unfolded state according to the present invention
  • FIG. 3 is a schematic structural view of the rotating device when the left ladder and the right ladder are in a state of using the single-arm inclined frame ladder according to the present invention
  • Figure 4 is a schematic structural view showing the state in which the left and right ladders of the present invention form a herringbone
  • FIG. 5 is a schematic structural view of the left ladder and the right ladder forming a single-arm inclined frame ladder according to the present invention
  • FIG. 6 is a schematic view of the present invention in a collapsed state
  • Figure 7 is a schematic view showing the connection between the left ladder page and the right ladder page of the present invention.
  • Figure 8 is a schematic view showing the connection of the operating link and the left and right ladder pages according to the present invention.
  • FIG. 9 is a schematic structural view of another embodiment of a left-turn page and a right-turn page according to the present invention.
  • FIG. 1 to 9 show an embodiment of the dual-purpose extension ladder of the present invention, which comprises a left ladder 1 and a right ladder 2 connected to each other at the top, and the top connection structure of the left ladder 1 and the right ladder 2 is mutually rotatable. Rotating device 3.
  • the left ladder and the right ladder are composed of a plurality of poles 12 which are sleeved with each other, and a plurality of crosspieces 8 are spaced apart from each other, and two ends of the crosspiece are respectively connected with the uprights, A connecting end piece of the retracting device is disposed between the crosspiece and the upright, and each of the left ladder and the right ladder can be separately extended and contracted.
  • the rotating device 3 is composed of a left ladder page 31 and a right ladder page 32 with the same rotating shaft 33.
  • the left ladder page 31 is connected with the left ladder 1 and the right ladder page 32 is connected with the left ladder 1;
  • the left ladder page 31 and the inner side surface of the right ladder page 32 perpendicular to the rotation shaft 33 abut each other. Since the left and right ladders are attached by the side surfaces of the left and right ladder pages, the contact surface between the plane and the plane is large, so the connection rigidity is good, the use is stable and reliable; and the left and right ladders can be improved. Directivity of relative rotation.
  • the inner side surfaces of the left and right turn pages 31 and 32, which are perpendicular to the rotating shaft 33, are mutually arranged as plane teeth;
  • the teeth may be arranged as square teeth, or may be provided as trapezoidal teeth or zigzag teeth;
  • the planar tooth interconnection structure has a larger contact area and contact strength, and also has multiple orientations of the left and right ladder deployment angles.
  • Auxiliary positioning function as shown in Figure 9.
  • the range of the left and right ladder deployment angles can reach 0 to 200 degrees.
  • a first keyway 8 and a second keyway 82 are disposed on the outer circumference of the head of the left ladder page 31 at an angle, and an upper portion of the right ladder page 32 corresponds to the position of the first keyway 8.
  • the positioning key 6 of the spring bearing 71 is provided; the first keyway 8 is matched with the positioning key 6; the positioning key 6 is connected to a spring 7, the spring 7 Placed in the spring holder 71.
  • the positioning key 6 is located in the first keyway 8; when the left ladder 1 and the right ladder 2 are fully deployed and form a deployment angle of 180 degrees, positioning The key 6 is located in the second key groove 81.
  • a lever 5 is disposed at an upper portion of the right turntable 32 corresponding to the position of the positioning key 6, and the other end of the lever 5 is coupled to an operating link 4.
  • the operation process of the present invention is such that the first position of the left ladder and the right ladder is closed, that is, when the left ladder page 31 and the right ladder page 32 are closed, as shown in FIG. 1, the positioning key 6 is located at the circle of the left ladder 1 at this time.
  • the second position of the left ladder and the right ladder constitute a herringbone deployment state.
  • the left ladder 1 is rotated outward from the state shown in FIG. 1.
  • the positioning key 6 gradually approaches the circumferential high point 33 of the left ladder page 31, and functions as a spring 7
  • the positioning key 6 is pushed into the first keyway 8 located at the high point of the circumference, as shown in FIG. 2, when the left ladder 1 and the right ladder 2 form a double-armed herringbone independent ladder form, Telescopic ladder for use;
  • the third position of the left ladder and the right ladder is completely unfolded and constitutes a single-arm inclined frame.
  • the use state first pulls the operation link 4 to rotate counterclockwise, drives the lever 5 to rotate and presses the positioning key 6, so that the positioning key 6 is from the first
  • the keyway 8 is pushed out; then, the left ladder is rotated outward until the positioning key 6 enters the second keyway 81 of the left ladder page 31, and is in the state of FIG. 3, that is, the left ladder 1 and the right ladder 2 are connected in a straight line state.
  • the left and right ladders achieve a fully unfolded composite height and can be used as a single-arm reclining ladder.
  • the operation link 4 is pulled to rotate counterclockwise, the lever 5 is rotated and the positioning key 6 is pressed, so that the positioning key 6 is pushed out from the second key groove 8; then, the left ladder is rotated inward until the positioning key 6 enters.
  • the bottom of the right ladder 2 is provided with a step 9 parallel to the crosspiece 8.
  • the step foot is used to enhance the stability of use of the present invention as a reclining ladder or a herringbone.
  • the invention can be used in two states, that is, the left and right ladders are set to use in the double-armed herringbone ladder state, as shown in Fig. 4; and the single-arm reclining ladder state is used, as shown in Fig. 5.
  • the left and right ladders of the present invention can be folded left and right and can be contracted up and down.
  • Fig. 6 shows that the left and right ladders of the present invention are in the left and right folded state while being in the up and down contraction state.
  • the left and right ladders of the invention have a small volume after being contracted, and are easy to carry and carry; and the use is stable, and the operation is simple and quick.

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  • Ladders (AREA)

Description

一种两用伸缩梯
技术领域
本发明涉及一种登髙梯领域， 特别是涉及一种具有伸缩特性、 既可构成双臂式人 字形独立架梯又可构成单臂斜靠式架梯的两用伸缩梯。它适宜于需要在各种不同高度以 及各种不同登高场合安全地在髙处拿取和存放物品使用。 背景技术
目前市场上两用伸缩梯的品种繁多； 其中有本申请人已经授权的中国专利号
200620140944. X《人字形伸缩梯》的发明专利， 它的结构包括带有安装角的人字形布置 的左、 右梯子， 该左梯子与右梯子的顶端相互连接； 该左梯子与右梯子各设置有对称布 局的前、 后立杆， 该前、 后立杆之间间隔地分布有多个横档， 该横档的两端分别与所述 的前、 后立杆相连接。 该前、 后立杆是由多节可伸缩的立杆相互套接组成； 该横档与所 述前、 后立杆之间设置有带立杆收缩装置的连接端件。 所述左、右梯子之间上部设置有 顶端连接粱。所述左、 右梯子之间中部设置有安装角定位梁。所述立杆底部设置有与所 述横档相平行的梯脚。所述安装角定位梁由两个半梁连接组成， ·所述两个半梁之间的下 方设置一可收拢所述左、右梯子的拉环。上述中国专利号 200620140944. X《人字形伸缩 梯》的结构合理， 所述左、 右梯子具有伸缩特性， 收缩后体积小， 易于携带与搬运， 又 操作简单、 快捷。
然而它的不足之处是所述顶端连接梁以及所述左、右梯子之间中部设置的安装角定 位梁当单臂斜靠式场合中使用时均不能相互完全合拢；所以当应用于单臂斜靠式架梯场 合中使用时， 只能在双臂式人字形独立架梯状态时展开使用， 因而它不能完全展开所述 左、右梯子合成高度； 其次是所述顶端连接梁与所述安装角定位梁的连接与定位的结构 刚度不太理想， 由此会影响登髙时的架梯稳定性。 发明内容
本发明的目的就是为了解决上述现有技术中存在的问题， 提供一种既可完全展开 左、 右梯子的合成高度、 又具有较好的连接结构刚性的两用伸缩梯。
本发明解决上述技术问题所采用的技术方案为： 该两用伸缩梯包括左梯与右梯， 该 左梯与该右梯的一端设置有连接组件， 其特征在于： 该连接组件设置为可在该左梯与该 右梯的一个端头之间相对转动的转动装置， 该转动装置设置有转动定位器。 所述定位装置及其定位器的结构用以实现完全展开该左梯与右梯的合成高度， 同时 具有较好的定位刚性。 '
所述转动装置可以设置为由带同一转轴的左梯转页与右梯转页组成，该左梯转页与 所述左梯顶端相连接， 该右梯转页与所述右梯顶端相连接； 该左梯转页与该右梯转页垂 直于所述转轴的内侧面相互贴接。 由于左、 右梯是通过该左、 右梯转页的侧面贴接， 这 种平面与平面之间连接方式的接触面大，所以连接刚性佳，使用稳固可靠；又可提高左、 右梯之间相对转动的导向性。
所述转动定位器可以做成在所述左梯转页头部的同一圆周上设置有二个几何形状 与尺寸一致的、相间隔一个角度的第一键槽与第二键槽， 所述右梯转页的上部相对应于 该第一键槽的位置上设置有带弹簧支座的定位键； 该第一键槽、第二键槽与该定位键相 配合。 采用键与键槽配合的精确度较高， 因而左、 右梯转页定位精度好， 且定位连接刚 性好；而且当本发明在双臂人字形式与单臂斜靠式两个状态下使用时的变换操作快捷方 便。
所述定位键一端可以连接一弹簧， 该弹簧置于所述弹簧支座中； 其作用是当所述定 位键落入该键槽中迅速正确定位， 确保本发明在人字形展开使用状态时的稳定性。
所述第一键槽可以设置在所述左梯转页与所述右梯转页构成人字形展开角为 30〜 50度正好与所述定位键相配合位置。所述第二键槽可以设置在所述左梯转页与所述右梯 转页展开角为 180度正好与所述定位键相配合位置。以确保本发明在左梯与右梯完全展 开并构成单臂斜靠式架梯使用状态时的稳定性。
所述右梯转页的上部相对应于所述定位键的位置上优选地设置一杠杆，该杠杆的端 部触及所述定位键， 该杠杆的另一端与一操作连杆相连接。通过该连杆操作定位键的二 个工作状态， 十分方便、 可靠。
所述左梯转页与所述左梯、所述右梯转页与所述右梯可以设置为螺钉连接，也可以 设置为铆钉连接； 螺钉连接装配方便。
所述右梯的底部设置有梯脚， 该梯脚用于加强本发明作为斜靠式架梯的使用稳定 性。
所述左梯转页与所述左梯垂直于所述转轴的内侧面可以设置为平面齿相互啮合连 接； 所述平面齿设置为方形齿或梯形齿或锯齿形齿； 其作用是该平面齿相互连接结构具 有更大的接触面积与接触强度， 而且还具有所述左梯与右梯展开角辅助定位功能。
本发明由于采用左梯与右梯的转动连接装置及其转动定位结构，因此可完全展开所 述左、 右梯的合成高度， 从而扩大了使用范围； 其次是转动定位的结构刚度好， 在双臂 人字形式与单臂斜靠式两个状态下使用变换的操作快捷方便， 而且使用稳定性也比较 好。 附图说明
图 1为本发明当左梯与右梯在收拢状态时的转动装置结构示意图；
图 2为本发明当左梯与右梯在人字形展开状态时的转动装置结构示意图； 图 3为本发明当左梯与右梯在单臂斜靠式架梯使用状态时的转动装置结构示意图； 图 4为本发明左梯与右梯构成人字形展开状态结构示意图；
图 5为本发明左梯与右梯构成单臂斜靠式架梯使用状态时的结构示意图； 图 6为本发明收拢状态时的示意图；
图 7为本发明左梯转页与右梯转页的连接示意图；
图 8为本发明操作连杆与左、 右梯转页的连接示意图；
图 9为本发明的左梯转页与右梯转页的另一个实施方式结构示意图； 具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
图 1至图 9示出了本发明两用伸缩梯的一个实施方式，它包括在顶部相互连接的左 梯 1与右梯 2， 该左梯 1与右梯 2的顶端连接结构是可相互转动的转动装置 3。
该左梯与右梯是由多节立杆 12相互套接组成， 该立杆之间间隔地分布有多个横档 8， 该横档的两端分别与所述的立杆相连接， 该横档与所述立杆之间设置有收缩装置的 连接端件， 所述左梯与所述右梯各自可以单独伸缩。
上述转动装置 3是由带同一转轴 33的左梯转页 31与右梯转页 32组成， 该左梯转 页 31与左梯 1相连接， 该右梯转页 32与左梯 1相连接； 该左梯转页 31与右梯转页 32 的垂直于所述转轴 33的内侧面相互靠接。 由于左、 右梯是通过该左、 右梯转页的侧面 贴接， 这种平面与平面之间连接的接触面大， 所以连接刚性佳， 使用稳固可靠； 又可提 高左、 右梯之间相对转动的导向性。
作为本发明的左梯转页与右梯转页的另一个实施方式是该左梯转页 31与右梯转页 32的垂直于所述转轴 33的内侧面相互设置为平面齿连接；该平面齿可以设置为方形齿、 也可以设置为梯形齿或锯齿形齿；这种平面齿相互连接结构具有更大的接触面积与接触 强度， 而且还具有所述左梯与右梯展开角的多方位辅助定位功能， 如图 9所示。
从而， 所述左梯与右梯展开角的范围可以达到 0〜200度。
所述左梯转页 31的头部外圆周上设置有相间隔一定角度的第一键槽 8与第二键槽 82,所述右梯转页 32的上部相对应于该第一键槽 8的位置上设置有带的弹簧支座 71的 定位键 6; 该第一键槽 8与该定位键 6相配合； 该定位键 6—端连接一弹簧 7， 该弹簧 7 置于所述弹簧支座 71中。
当左梯 1与右梯 2构成人字形展开角为 30〜50度时，定位键 6位于第一键槽 8中； 当左梯 1与右梯 2完全展开并构成展开角为 180度时， 定位键 6位于第二键槽 81中。
所述右梯转页 32的上部相对应于所述定位键 6的位置上设置一杠杆 5， 该杠杆 5 的另一端与一操作连杆 4相连接。
本发明操作过程是这样的 - 第一位置左梯与右梯合拢状态 即左梯转页 31与右梯转页 32合拢时， 如图 1所 示， 这时定位键 6位于左梯子 1的圆周边上；
第二位置左梯与右梯构成人字形展开使用状态 从图 1所示向外转动状态左梯 1， 定位键 6渐渐接近左梯转页 31的圆周高点 33处， 并在弹簧 7的作用下， 定位键 6被推 入位于该圆周高点上的第一键槽 8， 如图 2所示， 这时左梯 1与右梯 2构成双臂式人字 形独立架梯形态， 就可作为可伸缩的人字梯使用；
第三位置左梯与右梯完全展开并构成单臂斜靠式架梯使用状态 先拉动操作连杆 4 朝逆时针方向转动， 带动杠杆 5转动并压迫定位键 6， 使定位键 6从第一键槽 8中被推 出； 然后， 再向外转动左梯， 直到定位键 6进入左梯转页 31的第二键槽 81， 此时处于 图 3状态， 即左梯 1与右梯 2连接成直线状态， 左、 右梯子实现完全展开的合成高度， 并可作为单臂斜靠式架梯使用。
反之， 拉动操作连杆 4朝逆时针方向转动， 带动杠杆 5转动并压迫定位键 6， 使定 位键 6从第二键槽 8中被推出； 然后， 再向内转动左梯， 直到定位键 6进入左梯转页 31 的第一键槽 8， 此时左梯 1与右梯 2又处于图 2状态； 继续同向操作， 左梯与右梯即恢 复到合拢状态。
右梯 2的底部设置有与横档 8相平行的梯脚 9。该梯脚是加强本发明作为斜靠式架 梯使用或人字形展开时的使用稳定性。
本发明可以在两种状态下使用， 即左、右梯设置为双臂式人字形架梯状态使用， 如 图 4所示； 以及单臂斜靠式架梯状态使用， 如图 5所示。
本发明的左、右梯子可以左右收拢， 又可以上下收缩， 图 6示出本发明的左、 右梯 处于左右收拢状态同时又处于上下收缩状态。
本发明的左、右梯收縮后体积小， 易于携带与搬运； 又使用稳定性好、 操作简便快 捷。

Claims

权 利 要 求
1. 一种两用伸缩梯， 它包括左梯 (1) 与右梯 （2)， 该左梯 （1)与右梯 （2) 的一 端设置有连接组件， 其特征在于： 该连接组件设置为可在该左梯 (1)与该右梯 （2) 的 一个端头之间相对转动的转动装置 （3)， 该转动装置 （3)设置有转动定位器。
2. 根据权利要求 1所述的两用伸缩梯， 其特征在于： 所述转动装置（3)是由带同 一转轴 （33) 的左梯转页 （31) 与右梯转页 （32)组成， 该左梯转页 （31) 与所述左梯
(1)顶端相连接， 该右梯转页 （32) 与所述右梯 （2)顶端相连接； 该左梯转页 （31) 与该右梯转页 （32)垂直于所述转轴 （33) 的内侧面相互贴接。
3. 根据权利要求 1所述的两用伸缩梯， 其特征在于： 所述转动定位器包含有在所 述左梯转页（31)头部的同一圆周上设置有至少二个几何形状与尺寸一致的、 相间隔一 个角度的第一键槽（8)与第二键槽（81); 所述右梯转页 （32) 的上部相对应于该第一 键槽（8) 的位置上设置有带弹簧支座（71) 的定位键（6); 该第一键槽 (8) 与该定位 键 (6) 相配合。
4. 根据权利要求 3所述的两用伸缩梯， 其特征在于： 所述定位键（6)—端连接一 弹簧（7)， 该弹簧置于所述弹簧支座 （71) 中。
5. 根据权利要求 3或 4所述的两用伸缩梯， 其特征在于： 所述第一键槽 (8)设置 在所述左梯转页 （31)与所述右梯转页（32)构成人字形展开角为 30〜50度正好与所 述定位键（6)相配合位置。
6. 根据权利要求 5所述的两用伸缩梯， 其特征在于： 所述第二键槽 （81) 设置在 所述左梯转页 （31) 与所述右梯转页 （32) 展开角为 180度正好与所述定位键 （6) 相 配合位置。
7. 根据权利要求 6所述的两用伸缩梯， 其特征在于： 所述右梯转页 （32) 的上部 相对应于所述定位键（6)的位置上设置一杠杆（5)，该杠杆的端部触及所述定位键（6)， 该杠杆的另一端与一操作连杆 （4)相连接。
8. 根据权利要求 6所述的两用伸缩梯， 其特征在于： 所述左梯转页 （31) 与所述 左梯 （1) 设置为螺钉连接， 所述右梯转页 （32) 与所述右梯 （2) 设置为螺钉连接。
9. 根据权利要求 8所述的两用伸缩梯， 其特征在于： 所述右梯（2)的底部设置有 梯脚 （9)。
10. 根据权利要求 6所述的两用伸缩梯， 其特征在于： 所述左梯转页（31)与所述 左梯（1) 垂直于所述转轴 （33) 的内侧面设置为平面齿相互啮合连接； 所述平面齿设 置为方形齿、 或梯形齿、 或锯齿形齿。
PCT/CN2007/003627 2007-10-11 2007-12-17 Échelle pliante à double fonction WO2009046590A1 (fr)

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CN101503942B (zh) * 2009-03-12 2011-05-11 江苏舜天国际集团苏迈克斯工具有限公司 折叠梯专用铰链及车用折叠梯
CN102953673B (zh) * 2012-10-26 2016-01-20 钟华 自锁两用梯子铰链

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