CN102003136B - Locking structure for telescopic ladder - Google Patents

Locking structure for telescopic ladder Download PDF

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Publication number
CN102003136B
CN102003136B CN 201010524708 CN201010524708A CN102003136B CN 102003136 B CN102003136 B CN 102003136B CN 201010524708 CN201010524708 CN 201010524708 CN 201010524708 A CN201010524708 A CN 201010524708A CN 102003136 B CN102003136 B CN 102003136B
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CN
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Prior art keywords
portion
locking structure
sleeve
connecting sleeve
switch
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CN 201010524708
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Chinese (zh)
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CN102003136A (en )
Inventor
王万兴
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王万兴
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    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/06Securing devices or hooks for parts of extensible ladders
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C1/00Ladders in general
    • E06C1/02Ladders in general with rigid longitudinal member or members
    • E06C1/04Ladders for resting against objects, e.g. walls poles, trees
    • E06C1/08Ladders for resting against objects, e.g. walls poles, trees multi-part
    • E06C1/12Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
    • E06C1/125Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic with tubular longitudinal members nested within each other

Abstract

The invention relates to a locking structure for a telescopic ladder, comprising a connecting sleeve. The connecting sleeve is used for connecting a section rod and a corresponding rail, a bolt is arranged in the connecting sleeve and can horizontally and transversely move corresponding to the connecting sleeve, and the interior of the connecting sleeve is provided with a push knob for driving the bolt to transversely move, which is characterized in that the interior of the connecting sleeve is further provided with an automatically unlocking switch connected with the bolt. The automatically unlocking switch is rotationally arranged in the connecting sleeve, the rotation of the automatically unlocking switch can drive the bolt to transversely move, a jack is arranged on the lower end surface of the connecting sleeve, the upper end surface of the connecting sleeve is provided with a pushing part protruded upwards, and the pushing part can be inserted into a jack of the connecting sleeve in an adjacent higher locking structure so as to push the automatically unlocking switch to rotate. The locking structure for the telescopic ladder can be unlocked in single section step by step andalso automatically unlock the adjacent higher locking structure after a lower locking structure is unlocked.

Description

一种用于伸缩梯的锁定结构 A method for locking telescoping ladder structure

技术领域 FIELD

[0001] 本发明涉及一种具有若干可相对滑动并且相互嵌套在一起的梯杆的伸缩梯,特别涉及一种用于伸缩梯的锁定结构。 [0001] The present invention relates to a plurality of slidable relative to each other and nested extension ladder of the ladder bars together, and in particular relates to a locking structure for a telescopic ladder.

背景技术 Background technique

[0002] 在住宅、公寓、农场、工厂和其他地方发生维修或维护任务时,经常需要使用梯子。 [0002] When homes, apartments, farms, factories and elsewhere repairs or maintenance tasks, often need to use a ladder. 梯子在不使用的时候必须在某个地方被收藏起来。 Ladders must be covered up somewhere when not in use. 较长的梯子能够让人们到达更高的高度,但是却不便于搬运并且在收藏的时候会占用更多的空间。 A longer ladder allows people to reach higher heights, but it is not easy to handle and at the time of collection, take up more space. 而可伸缩的梯子就能够在使用时将梯子伸长,而在收藏时将梯子折叠起来。 The telescopic ladder ladder can be stretched in use, while in the ladder folded collection.

[0003]目前关于伸缩梯的专利文献有很多,有一号为US7048094的美国专利公开了一种这样使用方便安全的伸缩梯,该梯子包括:第一梯杆,第二梯杆以及延伸在第一梯杆和第二梯杆之间的若干横档;第一梯杆包括有第一节杆和第二节杆,该第一节杆包括有一内表面,第二节杆通过嵌套的方式和第一节杆连接成一可沿长度方向相对运动的伸缩结构;一锁定机构,可选择地将第二节杆相对第一节杆锁紧;一按钮,可操作地连接在锁定机构上,用于操控该锁定机构;本专利的特征在于,所述的按钮设置在靠近第一节杆的位置,并具有一个可与拇指指尖大小相适配的凹部,拇指指尖放在该凹部内可沿着从第一节杆往第二节杆的方向推动按钮而取消锁定机构对第二节杆的锁紧;一套管,套设在第二节杆的外表面上;该套管具有和第一节杆的内表面相接触的外导向 [0003] Currently on the telescopic ladder there are many patent document, there is the U.S. Patent US7048094 One discloses a convenient and safe to use such a telescopic ladder, the ladder comprising: a first stile, a second stile and extending in a first a plurality of ladder rungs between the ladder bar and a second lever; a first ladder bar comprises a first bar and a second bar, the first pole comprises an inner surface, the second lever by way of nesting and the first rod is connected to a telescopic structure along the longitudinal direction of the relative movement; a locking mechanism to selectively lock the second lever opposite the first shaft; a button operatively connected to the locking mechanism for manipulating the locking mechanism; feature of this patent is that the button is provided at a position close to the first bar and having a recessed portion may be adapted to the size of the fingertip of the thumb, along the thumb finger on the concave portion the push button from a first rod toward the second lever and unlock the locking mechanism of the second lever; a sleeve, a second sleeve disposed on the outer surface of the rod; and the sleeve having an outer surface of the inner guide bar contact . 前述伸缩梯具有一带推钮的锁定机构。 Along the extension ladder having a push button locking mechanism.

[0004] 如一专利号为ZL200620141000. 4(公告号为CN200985735Y)的中国实用新型专利《伸缩梯》披露了这样一种带推钮的伸缩梯锁定结构。 [0004] If a patent number ZL200620141000. 4 (Announcement No. CN200985735Y) of China utility model patents "extension ladder" revealed extension ladder with a push button lock.

[0005] 前述各种伸缩梯的缺点是必须一次一个地按下每个横档上的按钮才能将梯子折叠起来,这就使得这种梯子折叠起来费时。 [0005] The aforementioned various shortcomings of the extension ladder must be one at a time to press the button on each rung of the ladder folded up, which makes the ladder folded such time-consuming.

发明内容 SUMMARY

[0006] 本发明所要解决的技术问题是针对上述现有技术现状而提供一种既可单节逐级解锁、又可实现当下级锁定结构解锁后能将相邻的上级锁定结构自动解锁的用于伸缩梯的锁定结构。 [0006] The present invention solves the above technical problem for the prior art and to provide a status either single stepwise unlocking, while achieving lower when the locking structure adjacent the upper unlocking can automatically unlocked by the locking structure extension ladder in the lock.

[0007] 本发明解决上述技术问题所采用的技术方案为:一种用于伸缩梯的锁定结构,包括用于连接节杆和相应横档的连接套,连接套内设有插销,该插销能相对连接套水平横向移动并能露出而将相邻的上下两节节杆锁定在一起,所述连接套内设有使插销始终保持外露趋势的弹簧,及驱动插销横向移动的推扭,其特征在于:所述连接套内还设有与插销相连的自动解锁开关,在伸缩梯塌缩并触抵到下级连接套时,所述自动解锁开关被触动并带动插销横向移动而解锁。 [0007] The present invention solves the above technical problem is technical solution: a telescopic ladder locking structure, comprising a connecting rod and the section of the crosspiece corresponding connecting sleeve, provided with connecting sleeve plug, the plug can horizontal transverse movement relative to the coupling sleeve and can be exposed to two adjacent vertical rod steadily locked together, so that the connecting sleeve is provided with the latch spring trend remains exposed, and the driving pin moves laterally pushing and twisting, wherein wherein: said connector sleeve further provided with an automatic unlocking switch connected with the latch, and reduced to the lower contacts against the connecting sleeve when collapsed telescopic ladder, the automatic unlock switch is actuated and drive the latch to unlock and move laterally.

[0008] 上述自动解锁开关转动设置在连接套内,自动解锁开关的转动能带动插销横向移动,所述连接套的下端面开有插孔,连接套的上端面具有向上凸起的推动部,该推动部能插入相邻的上级锁定结构中连接套的插孔内而推动自动解锁开关转动。 [0008] The automatic rotation of the unlocking switch disposed in the connecting sleeve, driven by the automatic rotation could move laterally unlock switch latch, the end surface of the connecting sleeve opening with an insertion hole, an end surface of the sleeve portion having a convex upward push, the pushing portion can be inserted adjacent to the upper locking sleeve configuration jack pushes the unlocking switch automatically rotated. 转动解锁的方式更为平稳,当然自动解锁开关也可以采用能水平移动的方式设置在连接套内,推动部自动解锁开关采用斜面配合结构,而使在伸縮梯塌缩并触抵到下级连接套时,推动部能推动自动解锁开关横移而解锁。 Unlocking the rotation is more stable manner, of course, can also be used to automatically unlock switch horizontally movably disposed in the connecting sleeve, the pushing portion automatically unlock switch with chamfer mating structure, the reduction in the collapsed telescopic ladder and connected to the lower sleeve abutting contact when the push switch portion can promote traverse automatically unlock unlocked.

[0009] 上述自动解锁开关呈L形,自动解锁开关由转轴部、竖直部和水平部三部分组成,所述转轴部约束在连接套内并能绕自身轴线旋转,竖直部的下端和水平部的内端均与转轴部固定,竖直部的上端与所述插销相连,水平部的外端延伸至所述插孔位置处,所述推动部插入相邻的上级锁定结构中连接套的插孔后推动水平部的外端而使自动解锁开关转动。 [0009] The L-shaped unlocking switch automatically, automatically unlock switch shaft portion consists of three parts, consisting of a vertical portion and a horizontal portion, the shaft portion connected to the lower end of sleeve and constrained rotatable about its own axis, and the vertical portion the inner end of the horizontal portion of the rotating shaft fixing portion are connected to the upper end of the vertical portion of the plug, the outer end of the horizontal portion extending into the receptacle at a position adjacent to the pushing portion is inserted into the upper connecting sleeve locking structure after pushing the receptacle of the outer end of the horizontal portion of the automatic rotation of the unlocking switch. 将自动解锁开关设置成L形在满足自动解锁开关能被推动部带动转动最終带动插销移动的前提下,其结构最为简単。 Automatic unlocking switch disposed in an L-shape to be pushed to meet the automatic unlocking switch drive portion driven in rotation under the premise of the final movement of the bolt, the structure of the most simple radiolabeling. 当然自动解锁开关也可设计成其它外形,只要能满足自动解锁开关的转动能带动插销横向移动即可。 Of course, also be designed to automatically unlock switch into other shape, as long as the automatic rotation could meet the unlock switch drive latch to move laterally.

[0010] 上述自动解锁开关的竖直部有两个且平行间隔设置,竖直部的下端与转轴部的中部连接,所述插销中部具有第一环形槽,所述自动解锁开关的竖直部的上端卡在第一环形槽内并与第一环形槽的端面触碰;所述自动解锁开关的水平部有两个且平行间隔设置,水平部的内端分别与转轴部的两端连接,连接套的插孔也有两个。 [0010] The vertical portion of the automatic unlock switch and has two spaced central, lower portion of the vertical shaft portion connected in parallel, the latch having a first central annular groove, the vertical portion of the automatic unlocking switch the upper end of the first annular groove and the card touching the face of the first annular groove; unlock switch of the automatic horizontal portion has two parallel spaced, the inner end of the horizontal portion are connected to both ends of the shaft portion, connecting sleeve has two jacks. 而且自动解锁开关通过其上的竖直部卡在第一环形槽内而实现自动解锁开关与插销的连接,故组装也很方便,设置两个水平部能保证推动部能更平稳推动自动解锁开关转动。 And automatically unlock switch through which the vertical portion of the first annular groove and the card automatically unlock switch is connected with the latch, it is also very easy to assemble, the two horizontal portions provided to ensure more stable push portions pushing automatic unlocking switch rotation. 当然竖直部和水平部也可只有ー个,只需在插销上开一轴向设置的条形通孔,将竖直部插入条形通孔内,其对各部件之间的装配要求较高,而且这种自动解锁开关结构过于单薄,不能平稳转动。 Of course, the vertical portion and a horizontal portion may be only one ー, simply opening a strip-shaped axial through hole provided on the latch, the vertical bar portion is inserted into the through hole, which requires the assembly than between the components high, and this automatically unlock switch structure is too thin, can not be smoothly rotated.

[0011] 上述自动解锁开关的竖直部的上端呈圆弧状。 [0011] The upper end of the vertical portion of the automatic unlock switch is arcuate. 竖直部和第一环形槽的端面为弧面接触,这样当自动解锁开关转动时能轻松推动插销横向滑移。 The vertical portion and the end face of the first annular groove is in contact with the arc, so that when the lateral slip can easily push in the latch rotates automatically unlock switch.

[0012] 上述自动解锁开关的水平部外端具有两向下延伸并插入相应插孔的凸点。 [0012] The outer end of the horizontal portion of the automatic unlock switch having two downwardly extending and bumps into the corresponding jack. 这样能更好连接套上的推动部与自动解锁开关温度接触,而且在相同的移动范围内使自动解锁开关转动角度更大。 This will promote a better connection sleeve portion in contact with the temperature switch is automatically unlocked, and the automatic unlocking switch within the same moving range greater rotation angle.

[0013] 上述连接套的内侧具有与横档插接的插入部,插入部内具有凹腔,所述插销、自动解锁开关和弹簧位于该凹腔内;连接套外侧具有环形表面,该环形表面形成与节杆套接的套接ロ,套接ロ壁上具有与凹腔相贯通以供插销穿过的通孔。 [0013] inside the connecting sleeve has an insertion portion and the insertion of the rung, the cavity having the insertion portion, the latch, automatically unlocking switch and the spring is located within the cavity; connecting sleeve has an annular outer surface, the annular surface and the rod section of the socket socket ro, ro socket having a wall with a through cavity for the plug to pass through the through hole. 其为连接套的常规结构,能方便将横档及节杆连接到该连接套上。 Which is a conventional structure of the connecting sleeve, and can easily rungs section bar connected to the connector sleeve.

[0014] 为便于安置弹簧,上述插入部的凹腔内固定有ー弹簧座,弹簧座上具有容置孔,所述插销的后部则位于容置孔内的前部,所述弹簧位于容置孔内的后部,弹簧的一端抵靠在插销的后部,弹簧的另一端抵靠在容置孔的后内壁上。 [0014] In order to facilitate placement of the spring, within the cavity of the insertion portion is fixed ー spring seat, the spring seat having a receiving hole, is located at the rear of the front portion of the plug receiving bore, a spring located in the receiving hole facing the rear, the rear end of the spring against the latch, the other end of the spring abuts against the rear inner wall of the receiving hole.

[0015] 上述弹簧座两侧具有插边,对应,凹腔内两侧设有供插边插设的插槽。 [0015] both sides of the spring seat has an insertion side, corresponding to, for insertion side with interposed slots recessed cavity sides. 通过插边和插槽的作用,能方便将弹簧座限位在凹腔内。 And by inserting slot side effects, can easily stop the spring seat within the cavity.

[0016] 上述连接套的插入部的前端面上开有横向设置并与所述凹腔相通的条形孔,插销中部具有第二环形槽,所述推扭位于插入部的前端面外,推扭的后端面上具有向后延伸的连接部,该连接部穿过条形孔后卡扣在所述第二环形槽内并与第二环形槽的端面触碰。 [0016] The distal surface of the insertion portion of the connecting sleeve is provided with a transverse opening and communicating with said cavity rectangular hole, the center pin having a second annular groove, said push and twist at the front face of the insertion portion, the pushing having a rear end face of the torsion portion extending rearwardly of the connector, the connecting portion and touch with the end face of the second snap ring groove in said second annular groove after passing through the rectangular hole. 该推扭通过卡扣的连接方式与插销连接,具有安装方便的优点。 The push and twist through a snap-fit ​​connection with the latch connection, convenient installation advantages.

[0017] 与现有技术相比,本发明的优点在干:当需要单节逐级解锁,则需从伸缩梯的上级锁定结构逐级往下级解锁,解锁时只需推动推扭,推扭带动插销横向朝内移动便能解除伸缩梯相邻上下两节节杆的锁定;当先将下级锁定结构解锁后,其相邻的上级锁定结构连同横档在自重的作用下往下移,直至下级锁定结构中的连接套的推动部插入相邻的上级锁定结构中连接套的插孔内而推动自动解锁开关转动,最终带动插销横向朝内移动解除该级锁定结构,以此类推,其能逐级自动解除上级锁定结构;因此本锁定结构具有解锁方式多样性的特点,因此操作更加方便。 [0017] Compared with the prior art, advantages of the present invention when dry: when it is desired to unlock a single step by step, level by level down level need to unlock the locking structure from the upper extension ladder, simply pushing the push torsional unlocking, pushing and twisting drive pin moves laterally inwardly releasing the telescopic ladder will be able to steadily adjacent upper and lower lock lever; head after unlocking the lower locking structure, adjacent the locking structure along with the upper rail shift downward under its own weight until the lower connecting sleeve pushing portion adjacent the locking structure is inserted into the inner structure of the upper locking socket connector sleeve pushes the unlock switch automatically rotated, the final driven laterally inward movement of the latch releasing the locking structure level, and so on, which can by higher-level automatic locking structure is released; thus locking structure having features of the present unlocking diversity, and therefore the operation is more convenient.

附图说明 BRIEF DESCRIPTION

[0018] 图1为本发明实施例的立体结构示意图(锁定状态); [0018] FIG. 1 is a perspective schematic structural view (locked state) according to an embodiment of the present invention;

[0019] 图2为本发明实施例中推扭和自动解锁开关与插销的立体装配示意图(锁定状态); [0019] Figure 2 a perspective schematic view of a push and twist assembly and the latch automatically unlock switch embodiment (locked state) of the present invention;

[0020] 图3为本发明实施例的立体分解图; [0020] Fig 3 an exploded perspective view of an embodiment of the present invention;

[0021]图4为本发明实施例在伸缩梯上的使用的剖视图(锁定状态); [0021] FIG. 4 is a sectional view used in the embodiment of the telescopic ladder embodiment (locked state) of the present invention;

[0022] 图5为本发明实施例的立体结构示意图一(解锁状态); Three-dimensional structure of the embodiment [0022] FIG. 5 is a schematic view of the invention (unlocked state);

[0023] 图6为本发明实施例的立体结构示意图二(解锁状态); [0023] FIG. 6 is a perspective schematic view of a configuration example bis (unlocked state) of the present embodiment of the invention;

[0024] 图7为本发明实施例中推扭和自动解锁开关与插销的立体装配示意图(解锁状态); [0024] FIG. 7 embodiment, a push and twist assembly and a schematic perspective view (unlocked state) and the switch latch automatically unlock the present invention;

[0025] 图8为本发明实施例在伸缩梯上使用的剖视图(解锁状态); [0025] FIG. 8 a cross-sectional view (unlocked state) used in Example extending ladder embodiment of the present invention;

[0026]图9为本发明实施例在伸缩梯上使用的立体示意图(解锁状态)。 [0026] FIG. 9 a schematic perspective view (unlocked state) used in Example extending ladder embodiment of the present invention.

具体实施方式 detailed description

[0027] 以下结合附图实施例对本发明作进一步详细描述。 Example DRAWINGS The invention will be further described in detail with [0027] the binding.

[0028] 如图I〜9所示,为本发明的一个优选实施例。 [0028] As shown in FIG I~9, a preferred embodiment of the present invention.

[0029] 一种用于伸缩梯的锁定结构,包括用于连接节杆I和相应横档2的连接套3, [0029] A locking structure extending ladder, comprising section bars for connecting the respective I and crosspiece 32 of the connecting sleeve,

[0030] 连接套3的内侧具有与横档2插接的插入部33,插入部33内具有凹腔331,该凹腔331的下端开口,便于将各部件安装到凹腔331内,将插入部33插入横档2并与横档2固定,横档2的下端面将凹腔331的下端开口遮蔽;连接套3外侧具有环形表面,该环形表面形成与节杆I套接的套接口34,该套接口34与节杆I上部外周紧配,并可通过螺钉将套接口34与节杆I固定。 [0030] The inner sleeve 3 has a connector insertion portion 33 and the insertion of the rung 2, cavity 331 having the insertion portion 33, the lower end opening of the cavity 331, to facilitate mounting of the components into the cavity 331, the insertion portion 33 is inserted into rail 2 and the second fixed crosspiece, the crosspiece 2 at the lower end surface of the cavity 331 of the shield opening; connecting sleeve 3 has an annular outer surface, the annular surface is formed with a socket section I bar socket 34 the socket 34 and the outer periphery of the upper section of the rod I tight fit, and by a screw 34 and socket section I bar fixed.

[0031] 连接套3的内凹腔331设有插销4,插销4中部具有第一环形槽41,该插销4能相对连接套3水平横向移动并能露出而将相邻的上下两节节杆I锁定在一起,连接套3内设有使插销4始终保持外露趋势的弹簧5,套接口34壁上具有与凹腔331相贯通以供插销4穿过的通孔341,与连接套3相固定的节杆I壁上开有锁孔11,插设在前述节杆I的上一节节杆I中部也设有一锁孔12,当插销4穿出连接套3后依次进入两个节杆I的锁孔11、12中,将该两节节杆I锁定。 [0031] The connecting sleeve inner cavity 3313 is provided with the latch 4, the center pin 4 having a first annular groove 41, the latch 4 relative to the connector sleeve 3 can move horizontally and laterally and can be exposed to two adjacent vertical rods steadily I locked together, that the connecting sleeve 3 are equipped with the latch 4 remains exposed trend spring 5, the socket having a wall 34 with a through cavity 331 for the pin 4 passes through the through hole 341, with the connecting sleeve 3 section I bar fixed wall of the locking hole 11 is opened, the interposed section I bar on a central rod steadily I also provided with a locking hole 12, after piercing the plug connector 4 turn into two sets of three segmented rod I keyhole 11 and 12, the two rods I locked steadily. 其为现有伸缩梯的锁定结构的常规设计。 The locking structure of conventional design which is conventional telescopic ladder.

[0032] 弹簧5通过以下结构安装在凹腔331内,在凹腔331内还固定有一弹簧座8,弹簧座8上具有容置孔81,插销4的后部则位于容置孔81内的前部,弹簧5位于容置孔81内的后部,弹黃5的一端抵罪在插销4的后部,弹黃5的另一端抵罪在各直孔81的后内壁上;弹簧座8两侧具有插边82,对应,凹腔331内两侧设有供插边82插设的插槽332。 [0032] The spring 5 is mounted in the cavity 331 through the structure within the cavity 331 is also fixed to a spring seat 8, the spring seat having 8 receiving hole 81, the latch rear portion 4 is disposed in the receiving hole 81 the front portion, the spring 5 is located in the rear portion of the accommodating hole 81, one end of the spring 5 in the rear of the latch 4 is punished for a crime, the other end of the spring 5 is punished for a crime on the rear inner wall of each of the straight holes 81; spring seat sides 8 has an insertion edge 82, corresponding to both sides of the inner cavity 331 is provided for insertion edge 82 of the slot 332 is inserted.

[0033] —驱动插销4横向移动的推扭6,推扭6位于插入部33的前端面外,推扭6的后端面上具有向后延伸的连接部61,连接套的插入部33的前端面上开有横向设置并与凹腔3相通的条形孔333,当然,由于插入部33插设在横档2内,因此横档2的侧壁上也开有与前述条形孔333相应的条形孔,在插销4中部具有第二环形槽42,推扭6的连接部61依次穿过横档2上的条形孔及插入部上的条形孔333后卡扣在第二环形槽42内并与第二环形槽42的端面触碰。 The front end of the drive pin 4 moves laterally 6 pushing and twisting, pushing and twisting the insertion portion 6 at the forward end 33 of the outer surface of the rear end surface 6 of pushing and twisting the connecting portion 61 having a rearwardly extending portion 33 connected to the insertion of the sleeve - [0033] surface and is provided with a transverse opening rectangular hole 333 communicating with the cavity 3, of course, since the insertion portion 33 is inserted in the crosspiece 2, the crosspiece side wall 2 is also opened with the corresponding rectangular hole 333 rectangular hole in the central pin 4 has a second annular groove 42, pushing and twisting the connecting portion 616 passes through hole 333 in the strip after the strip is inserted into the hole and the upper portion 2 of the second annular ledge in snap the groove 42 and the end surface touching the second annular groove 42.

[0034] 连接套3的凹腔331内还设有与插销4相连的自动解锁开关7,自动解锁开关7呈L形,自动解锁开关7由转轴部71、竖直部72和水平部73三部分组成,本实施例中的自动解锁开关7为一体成型件。 [0034] The connecting sleeve 331 within cavity 3 is also provided with the latch automatically unlock switch 47 is connected, automatically unlock switch 7 is L-shaped, the automatic unlocking switch 7 by the rotary shaft portion 71, vertical portion 72 and horizontal portion 73 three parts, automatically unlock switch 7 in the present embodiment integrally molded part. 自动解锁开关7通过转轴部71转动设置在连接套3内,转轴部71约束在连接套3内并能绕自身轴线旋转,自动解锁开关7的转动能带动插销4横向移动;自动解锁开关的竖直部72有两个且平行间隔设置,竖直部72的下端与转轴部71的中部连接,自动解锁开关的竖直部72的上端卡在第一环形槽41内并与第一环形槽41的端面触碰,且竖直部72的上端呈圆弧状;自动解锁开关的水平部73有两个且平行间隔设置,水平部72的内端分别与转轴部71的两端连接,连接套3的下端面开有两个插孔31,水平部73的外端延伸至插孔31位置处,且水平部73外端具有两向下延伸并插入相应插孔31的凸点731。 Automatically unlock switch 7 is rotatably disposed in the connecting sleeve 3, the rotary shaft portion 71 bound by the connecting sleeve 3, and can rotate about its axis, automatically unlocks the rotary switch 7 can drive the latch 4 lateral movement via a shaft portion 71; automatic vertical unlock switch 72 and has two parallel spaced straight portion, the lower end of the vertical portion 72 with the shaft portion 71 of the central connector, the upper end of the vertical portion 72 to automatically unlock switch cards in the first annular groove 41 and annular groove 41 of the first touch the end surface, and the upper end 72 of the arcuate portion of the vertical; the horizontal portion 73 of the automatic unlock switch has two parallel and spaced, the inner end of the horizontal portion 72 are respectively connected to both ends of the shaft portion 71, connecting sleeve two jacks 31 are opened end surface 3 of the outer end of the horizontal portion 73 extends to a position at the insertion hole 31, and the outer end of the horizontal portion 73 extending downwardly and having two bumps into the corresponding insertion hole of 73,131.

[0035] 连接套3的上端面具有两个向上凸起的推动部32,在推动部32插入相邻的上级锁定结构中连接套的插孔31后推动水平部73的外端而使自动解锁开关7转动。 [0035] The upper end surface of the connecting sleeve 3 has two upwardly projecting push portion 32, the pushing portion 32 is inserted adjacent to the upper locking portion of the outer end of the horizontal pushing jack 3173 connected to the structure of the automatic unlocking sleeve switch 7 is rotated.

[0036] 本锁定结构的工作原理及过程如下。 The working principle and process [0036] This locking structure is as follows.

[0037] 如图I〜4所示,锁定时,上一节节杆I上移,当移动到合适位置,即相邻两节节杆I上锁定孔11、12位于同一轴线上,插销4在弹簧5的作用下弹出,同时插入该两节节杆I的锁孔11、12内,将该两节节杆I锁定在一起。 [0037] As shown in FIG I~4, lock, a steadily move the rod I, when moved to the proper position, i.e. the two adjacent losing I bar locking holes 11 and 12 located on the same axis, the latch 4 in the pop-up action of the spring 5, while steadily inserted into the two rods 11 and 12 within keyhole I, the two I bar steadily locked together.

[0038] 如图5〜9所示,当需要单节逐级解锁,则需从伸缩梯的上级锁定结构逐级往下级解锁,解锁时只需推动推扭6,推扭6带动插销4克服弹簧5的弾力横向朝内移动,插销4退出两节节杆I的锁孔11、12,解除伸缩梯相邻上下两节节杆I的锁定,上一节节杆I在重力的作用下下移。 [0038] As shown in FIG. 5~9, when it is desired to unlock a single step by step, level by level down level need to unlock the locking structure from the upper extension ladder, simply pushing the push twist unlock 6, 6 driven by pushing and twisting the plug 4 against the Tan moves within the spring 5 toward the lateral force, the latch lever 4 I steadily two exit keyhole 11, two vertically adjacent lift telescopic ladder steadily I bar lock, the I bar at a steadily gravity shift.

[0039] 如图5〜9所示,逐级自动解除上级锁定结构,先推动对牛将下级锁定结构解锁后,其相邻的上级锁定结构连同横档2在自重的作用下往下移,直至下级锁定结构中的连接套的推动部32插入相邻的上级锁定结构中连接套的插孔31内而推动水平部73的凸点731,自动解锁开关7转动,最終带动插销4横向朝内移动解除该级锁定结构,以此类推,其能逐级解除上级锁定结构。 [0039] As shown in FIG. 5~9, automatically released progressively higher locking structure to push the rear lower cattle unlocking locking structure, adjacent the locking structure along with the upper rail 2 move downward under its own weight, until the lower sleeve locking connection structure pushing portion 32 is inserted within the structure adjacent to the upper locking socket connection sleeve 31 to push the horizontal portion 73 of the bump 731, automatically unlock switch 7 is rotated, the final driven toward the transverse pin 4 releasing the locking structure moving stage, and so on, which can be released progressively higher locking structure.

Claims (9)

  1. 1. 一种用于伸縮梯的锁定结构,包括用于连接节杆(I)和相应横档(2)的连接套(3),连接套(3)内设有插销(4),该插销(4)能相对连接套(3)水平横向移动并能露出而将相邻的上下两节节杆(I)锁定在一起,所述连接套(3)内设有使插销(4)始终保持外露趋势的弹簧(5),及驱动插销(4)横向移动的推扭¢),其特征在于:所述连接套(3)内还设有与插销(4)相连的自动解锁开关(7),在伸縮梯塌缩并触抵到下级连接套(3)时,所述自动解锁开关(7)被触动并带动插销(4)横向移动而解锁;所述自动解锁开关(7)转动设置在连接套(3)内,自动解锁开关(7)的转动能带动插销(4)横向移动,所述连接套(3)的下端面开有插孔(31),连接套(3)的上端面具有向上凸起的推动部(32),该推动部(32)能插入相邻的上级锁定结构中连接套的插孔(31)内而推动自动解锁开关 An extension ladder locking structure for a connector comprising a rod section (I) and the respective crosspiece (2) of the connection sleeve (3), the connection sleeve (3) is provided with the latch (4), the pin (4) be relatively connection sleeve (3) is exposed and can be moved laterally horizontally and vertically adjacent two rods steadily (I) are locked together, said connecting sleeve (3) is provided with the latches (4) remains trends exposed spring (5), and a drive pin (4) moves laterally pushing and twisting ¢), characterized in that: said connection sleeve (3) is also provided with the latch (4) is connected to automatically unlock switch (7) when collapsed telescopic ladder and to the lower contact against connection sleeve (3), said automatic unlocking switch (7) is actuated and drives the latch (4) unlocking lateral movement; the automatic unlocking switch (7) rotatably disposed rotatably connected to the inner sleeve (3), automatically unlocking switch (7) can drive the bolt (4) moves laterally, the lower end surface of the connecting sleeve (3) has a receptacle opening (31), on an end surface of sleeve (3) having the pushing portion (32) projecting upwardly, the pushing portion (32) can be inserted adjacent to the upper locking socket structure connecting sleeve (31) automatically pushes the unlocking switch 7)转动。 7) is rotated.
  2. 2.根据权利要求I所述的用于伸缩梯的锁定结构,其特征在于:所述自动解锁开关(7)呈L形,自动解锁开关(7)由转轴部(71)、竖直部(72)和水平部(73)三部分组成,所述转轴部(71)约束在连接套(3)内并能绕自身轴线旋转,竖直部(72)的下端和水平部(73)的内端均与转轴部(71)固定,竖直部(72)的上端与所述插销(4)相连,水平部(73)的外端延伸至所述插孔(31)位置处,所述推动部(32)插入相邻的上级锁定结构中连接套的插孔(31)后推动水平部(73)的外端而使自动解锁开关(7)转动。 The telescopic ladder locking structure according to claim I, wherein: said automatic unlocking switch (7) is L-shaped, the automatic unlocking switch (7) by a shaft portion (71), the vertical portion ( 72) and a horizontal portion (73) consists of three parts, the shaft portion (71) confined within the connection sleeve (3) and rotatable about its own axis of rotation, the vertical portion (72) and a lower horizontal portion (73) fixing each end of the rotating shaft portion (71), (4) is connected to the vertical portion (72) of the upper end of the plug, the outer end of the horizontal portion (73) extends into the (31) the position of the receptacle, the push after pushing the outer end portion of the horizontal portion (32) adjacent to the upper locking structure inserted in receptacle (31) connected to the sleeve (73) to automatically unlock the switch (7) is rotated.
  3. 3.根据权利要求2所述的用于伸缩梯的锁定结构,其特征在于:所述自动解锁开关的竖直部(72)有两个且平行间隔设置,竖直部(72)的下端与转轴部(71)的中部连接,所述插销(4)中部具有第一环形槽(41),所述自动解锁开关的竖直部(72)的上端卡在第一环形槽(41)内并与第一环形槽(41)的端面触碰;所述自动解锁开关的水平部(73)有两个且平行间隔设置,水平部(72)的内端分别与转轴部(71)的两端连接,所述连接套的插孔(31)有两个。 3. A locking structure for a telescopic ladder according to claim 2, wherein: said automatic vertical portion of the unlocking switch (72) and has two parallel spaced from the lower end of the vertical portion (72) and the central shaft portion (71) is connected to the latch (4) having a first central annular groove (41), the upper end of the vertical portion (72) to automatically unlock the switch cards in the first annular groove (41) and touch the face of the first annular groove (41); a horizontal portion of the automatic unlocking switch (73) has two parallel and spaced from the inner end of the horizontal portion (72) of both end portions with the rotary shaft (71) respectively connected to a connecting sleeve receptacle (31) has two.
  4. 4.根据权利要求3所述的用于伸缩梯的锁定结构,其特征在于:所述自动解锁开关的竖直部(72)的上端呈圆弧状。 4. A locking structure for a telescopic ladder according to claim 3, wherein: said automatically unlock upper vertical portion (72) of the switch arcuate.
  5. 5.根据权利要求3所述的用于伸缩梯的锁定结构,其特征在于:所述自动解锁开关的水平部(73)外端具有两向下延伸并插入相应插孔(31)的凸点(731)。 The telescopic ladder locking structure according to claim 3, wherein: (73) the outer end of the horizontal portion of the automatic unlock switch having two bumps extending downwardly and inserted into corresponding receptacles (31) (731).
  6. 6.根据权利要求I〜5中任ー权利要求所述的用于伸缩梯的锁定结构,其特征在于:所述连接套(3)的内侧具有与横档(2)插接的插入部(33),插入部(33)内具有凹腔(331),所述插销(4)、自动解锁开关(7)和弹簧(5)位于该凹腔(331)内;连接套(3)外侧具有环形表面,该环形表面形成与节杆(I)套接的套接ロ(34),套接ロ(34)壁上具有与凹腔(331)相贯通以供插销⑷穿过的通孔(341)。 I~5 according to any of claims ー locking structure for the extension ladder, claim wherein: the inner connecting sleeve (3) having an insertion portion rung (2) of the plug ( 33), the insertion portion having a cavity (331)) of (33, said latch (4), automatically unlocking switch (7) and a spring (5) located in said cavity (331) therein; connection sleeve (3) having outer annular surface, the annular surface is formed with the rod section (I) of the socket ro socket (34), ro socket (34) and the wall of the cavity has a through hole (331) for use with a through bolt therethrough ⑷ ( 341).
  7. 7.根据权利要求6所述的用于伸缩梯的锁定结构,其特征在于:所述插入部的凹腔(331)内还固定有一弹簧座(8),弹簧座(8)上具有容置孔(81),所述插销(4)的后部则位于容置孔(81)内的前部,所述弹簧(5)位于容置孔(81)内的后部,弹簧(5)的一端抵靠在插销⑷的后部,弹簧(5)的另一端抵靠在容置孔(81)的后内壁上。 The locking structure for a telescopic ladder according to claim 6, wherein: the insertion portion of the inner cavity (331) is also fixed to a spring seat (8), a spring seat (8) having a receiving hole (81), said rear latch (4) is located at the front portion receiving hole (81) therein, said spring (5) at the rear, the spring receiving hole (81) in (5) ⑷ rear end against the pin, and the other end of the spring (5) abuts against the rear inner wall receiving hole (81).
  8. 8.根据权利要求7所述的用于伸缩梯的锁定结构,其特征在干:所述弹簧座(8)两侧具有插边(82),对应,凹腔(331)内两侧设有供插边插设的插槽(332)。 8. A locking structure for a telescopic ladder according to claim 7, characterized in that the dry: said spring seat (8) has an insertion edge on both sides of (82), corresponds with the inner sides of the recess (331) for slotting interposed slot (332).
  9. 9.根据权利要求6所述的用于伸缩梯的锁定结构,其特征在于:所述连接套的插入部(33)的前端面上开有横向设置并与所述凹腔(3)相通的条形孔(333),插销(4)中部具有第二环形槽(42),所述推扭(6)位于插入部(33)的前端面外,推扭¢)的后端面上具有向后延伸的连接部(61),该连接部¢1)穿过条形孔(333)后卡扣在所述第二环形槽(42)内并与第二环形槽(42)的端面触碰。 9. A locking structure for a telescopic ladder according to claim 6, wherein: the distal end surface of the insertion portion (33) of said connecting sleeve is opened and disposed transversely to the cavity (3) communicating (333), the latch (4) having a central rectangular hole of a second annular groove (42), said push and twist (6) at the front face of the insertion portion (33), the pushing and twisting ¢) having a rear end face rearwardly snap in the second annular groove (42) and a second end surface touching the annular groove (42) of the connection portion (61) extends, the connecting portion ¢. 1) through a strip-shaped aperture (333).
CN 201010524708 2010-10-28 2010-10-28 Locking structure for telescopic ladder CN102003136B (en)

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PCT/CN2011/001700 WO2012055159A1 (en) 2010-10-28 2011-10-11 Locking structure for extensionableladder
EP20110835433 EP2634360A4 (en) 2010-10-28 2011-10-11 Locking structure for extensionableladder

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CN200971751Y (en) 2006-10-30 2007-11-07 范刚 Locking device for telescopic lalder
CN201507233U (en) 2009-08-28 2010-06-16 梁尧广 Telescopic ladder
CN201883928U (en) 2010-10-28 2011-06-29 王万兴 Locking structure for extension ladder

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Publication number Publication date Type
EP2634360A1 (en) 2013-09-04 application
EP2634360A4 (en) 2014-11-19 application
WO2012055159A1 (en) 2012-05-03 application
CN102003136A (en) 2011-04-06 application

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Owner name: NINGBO XINGFU TOOLS CO., LTD.

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