WO2010034135A1 - 伸缩梯 - Google Patents

伸缩梯 Download PDF

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Publication number
WO2010034135A1
WO2010034135A1 PCT/CN2008/001650 CN2008001650W WO2010034135A1 WO 2010034135 A1 WO2010034135 A1 WO 2010034135A1 CN 2008001650 W CN2008001650 W CN 2008001650W WO 2010034135 A1 WO2010034135 A1 WO 2010034135A1
Authority
WO
WIPO (PCT)
Prior art keywords
ladder
improvement
telescopic
structure according
column unit
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2008/001650
Other languages
English (en)
French (fr)
Inventor
郭晶耀
诺曼·威廉·理克
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority to CA2738370A priority Critical patent/CA2738370C/en
Priority to AU2008362048A priority patent/AU2008362048B2/en
Priority to US13/120,775 priority patent/US8869939B2/en
Priority to DK08800642.4T priority patent/DK2343433T3/en
Priority to CN200880131240.8A priority patent/CN102741494B/zh
Priority to PCT/CN2008/001650 priority patent/WO2010034135A1/zh
Priority to KR2020117000011U priority patent/KR20110006590U/ko
Priority to JP2011600032U priority patent/JP3171708U/ja
Priority to EP08800642.4A priority patent/EP2343433B1/en
Application filed by Individual filed Critical Individual
Publication of WO2010034135A1 publication Critical patent/WO2010034135A1/zh
Priority to ZA2011/02091A priority patent/ZA201102091B/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/003Indicating devices, e.g. user warnings or inclinators
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/08Special construction of longitudinal members, or rungs or other treads
    • E06C7/082Connections between rungs or treads and longitudinal members
    • E06C7/086Connections between rungs or treads and longitudinal members with a connecting piece inserted in a hollow rung
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/42Ladder feet; Supports therefor
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06CLADDERS
    • E06C7/00Component parts, supporting parts, or accessories
    • E06C7/42Ladder feet; Supports therefor
    • E06C7/44Means for mounting ladders on uneven ground

Definitions

  • the degree is more ambiguous, and the problem of the above-mentioned common extension ladder can be effectively solved, and the transmission parts are greatly reduced, the parts and the technical parts to be processed are relatively reduced, the cost is saved, and the probability of occurrence of the problem is further reduced.
  • a fixed top pin is disposed at an upper end of the connection kit for being sleeved to the ladder column unit, and a locking mechanism is disposed inside the connection kit, and one end of the connection kit is further The lateral ladder is covered; thereby, when the fixed top pin of the lower connection kit penetrates from the bottom to the top of the upper connection kit, the locking mechanism disposed inside the upper connection kit is pushed to unlock, and the top is unlocked
  • the pin is a fixed type that avoids the problem of damage or inoperability due to external forces.
  • 3 is a view showing the use of the extension ladder of the present invention.
  • Figure 12 is a perspective view of a second embodiment of the present invention.
  • Figure 16 is a perspective view of an auxiliary elastic stand according to a third embodiment of the present invention.
  • Fig. 21A is an enlarged view of a portion A in Fig. 20.
  • Ring neck 202 Coronal ring 30: Through hole 31: Ring sleeve
  • each of the ladder column units 2 has a hollow tubular shape and is nested with each other, that is, a pipe having a small diameter but the same shape is disposed inside the first section of the ladder column unit 2.
  • the two step ladder unit 2a, the second step ladder unit 2a can slide up and down inside the first step ladder unit 2, and the other section ladder unit units are sleeved with each other in the same situation.
  • a pin hole 21 and a positioning hole 22 are provided at the upper end of the first step ladder unit 2 so that the connection kit 3 can be coupled thereto.
  • the connection kit 3 includes a collar portion 31 that can be sleeved to the upper end of the ladder column unit, and a shaft joint portion 32 that extends outward from the collar portion 31.
  • the collar portion is 31 sets to the upper end of the ladder column unit, which can be locked and fixed by screws 33.
  • the inner wall is provided with a positioning boring head 34 for inserting the hole 21 of the ladder column unit, and a concave liquid flow path 35 is formed, and the mucus flow path 35 is
  • An injection hole 36 is provided at one end for injecting the adhesive to adhere to the ladder column unit; and the collar portion 31 is provided with a uniform perforation 30, and the through hole 30 is sleeved at the upper end of the ladder column unit at the collar portion 31. Thereafter, the system is in communication with the positioning hole 22 of the ladder unit 2.
  • a first layer locking mechanism 4a is disposed inside the passage 37 of the first layer connection kit 3, and includes a shutter 41, a lock lever 42, a spring 43, a pull rod 44 and a manual control button 45;
  • the baffle 41 is inserted into and fixed in the straight groove 38 of the shaft connecting portion 32, and a through hole 411 is defined in the center thereof, so that the joint end 441 of the pull rod 44 passes through the through hole 411 and is combined with the connecting end 421 of the lock rod 42.
  • One end of the locking rod 42 passes through the through hole 30 of the connecting sleeve 3 and the positioning hole 22 of the ladder column unit 2.
  • the rod of the locking rod 42 is provided with a slot 422 for inserting a C-shaped piece 46 into the narrow hole. The slot 422 is then used to limit the spring 43, whereby the lock lever 42 is returned to its original position by the force of the spring 43 when it is pulled by the pull rod 44.
  • the baffle 41, the lock lever 42, the magazine 43 and the tie rod 44 of the first layer locking mechanism 4a are all disposed in the connection kit 3
  • the inside of the passage 37 is covered by a lateral ladder 5, and one end of the pull rod 44 is connected with a manual control button 45 disposed under the lateral ladder 5, so that the manual control button 45 can externally control the lock lever 42.
  • the manual control button 45 is provided with a guide plate 451 at the upper end thereof, and the lower end of the guide plate 451 forms a horizontal groove 452, so that the guide plate 451 can be pushed into the through hole 51 of the lateral ladder plate 5 in a tight manner, and The horizontal groove 452 is displaced in the hole edge of the through hole 51.
  • the ladder column unit 2a above the second section is provided with a through hole 23 outside, and an outer convex ring 24 is disposed below the through hole 23, and the inner surface of the first step ladder unit 2 is provided.
  • the inner convex ring 25 (shown in FIG. 5 ) has an outer convex ring 24 and the inner convex ring 25 abutting when the ladder column unit 2 a moves up and down inside the first step ladder unit 2
  • the hole 23 is aligned to the positioning hole 22 of the first step ladder unit 2, so that the lock rod 44 can penetrate the through hole 23, and the upper step ladder unit and the lower step ladder unit are relatively stretched and fixed.
  • the ladder column unit 2a of the second section or more has a button hole 26 at the lower end thereof, and is fastened to the ladder hole 26 of the ladder column unit by a buffer assembly 6 and fixed to the ladder by a buckle assembly 61.
  • the lower end of the column unit 2a; the outer periphery of the buffer unit 6 is provided with an elastic sealing ring 62 to maintain proper friction with the inner wall of the ladder column unit when moving up and down inside the ladder column unit to reduce noise generation and elastic sealing.
  • the ring 62 has a function of buffering and folding; further, the inside of the buffer unit 6 is further provided with a film 63.
  • the film 63 is formed with a hole. When the buffer unit 6 moves up and down, air can enter the film 63 through the hole. , to promote the buffer effect.
  • the ladder column unit of the present invention has an inner convex ring neck 201 at the upper end nozzle and a convex convex portion at the lower end nozzle end.
  • the ring portion 202 by means, when the upper step ladder unit penetrates from the bottom to the inside of the lower step ladder unit, the ring neck 201 and the convex ring portion 202 can be relatively restricted to prevent the ladder column units from slipping off each other, ensuring use Safe.
  • the upper layer locking mechanism 4b, the upper layer connecting sleeve 3a and the upper horizontal ladder plate 5a of the ladder column unit 2a are mainly shown in the second section, and the first layer is slightly different.
  • the first layer of the horizontal ladder plate 5a is slightly different. No through holes can be provided below.
  • the upper layer connection kit 3a is provided with a shaft groove 39 on the inner wall surface of the side plates 321, 322; and the bottom end of the collar portion 31 of the connection kit 3a.
  • a portion of the contact portion 32 is provided with a notch 310.
  • the upper layer locking mechanism 4b is disposed on the upper layer connecting sleeve 3a, and includes a locking rod 410, a spring 420, a sleeve 430 and a dialing button 440.
  • the sleeve 430 is provided with a vertical plate 431. The two sides of the plate 431 can be inserted into and fixed into the straight groove 38 of the shaft connecting portion 32.
  • the inside of the sleeve 430 can be inserted into one end of the locking rod 410, and the spring 420 is disposed on one end of the locking rod 410 inserted into the sleeve 430.
  • the lock bar 410 has a function of horizontally moving and resetting; a locking groove 411 is defined in the rod body of the lock bar 410 for inserting the dial key 440.
  • the dial 440 is slightly V-shaped, and one end thereof is a fork arm 441.
  • the fork arm 441 can be forked into the slot 411 of the lock lever 410, and the other end is a bottom plate 442.
  • the protruding protrusion 443; and the dialing key 440 is further formed with a protruding shaft 444 at the junction of the fork arm 441 and the bottom plate 442, so that the dialing key 440 is embedded in the axial groove 39 of the upper connecting piece 3a by the protruding shaft 444, and the convex key 440 is convex.
  • Block 443 is then exposed from the gap 310 (as shown in Figure 8).
  • the upper end of the loop portion 31 is provided with an upwardly protruding fixed top pin 300 , the fixed top pin 300 and the connection kit 3 . (3a) is integrated, Since it is formed at the upper end of the collar portion 31, it is not covered by the lateral ladder plate 5, and the fixed top pin 300 is just aligned with the notch 310 of the upper layer connection kit 3a.
  • the first layer The fixed top pin 300 of the upper end of the connection kit 3 penetrates into the notch 310 of the upper connection kit 3a, and simultaneously pushes the protrusion 443 of the internal key 440 of the upper locking mechanism to swing the dial 440, and then the fork of the dial 440
  • the arm 441 drives the lock rod 410 to retreat.
  • the lock rod 410 exits the through hole of the third layer ladder column unit, the third layer ladder column unit, the connection kit and the lateral ladder plate are simultaneously dropped, and then the third layer connection kit is used.
  • the fixed top pin 300 pushes the button of the fourth layer, and then the fourth layer of the ladder column unit, the connection kit and the lateral ladder plate are dropped, so that the manual control button 45 of the first layer can be moved, so that the ladders can be made.
  • the column unit is successively dropped and collapsed; Through the snubber assembly 6 and an elastic seal ring 62, both layers stretched staircase column element to expand or collapse the falling of the noise can be achieved without cushioning movements.
  • the extension ladder of the present invention not only reduces the installation cost of the parts through the simple structural composition, but also increases the reliability of use, and hides the unlocking mechanism inside and prevents the user from dialing the lock. The key is accidentally touched and dangerous.
  • Figure 12 is a perspective view of a second embodiment of the present invention.
  • the extension ladder of the present invention is additionally provided with a compartment unlocking block 7, and the upper end of the compartment unlocking block 7 has a compartment of the same size as the top pin.
  • the top pin 71 has a top pin sleeve 72 at the lower end thereof. When the compartment unlocking block 7 is sleeved to the upper end of the fixed pin 300, the fixed pin 300 is raised upward.
  • the lower end of the telescopic rod 85 is combined with a base 86 and a base 84 so that the telescopic rod 85 can freely rotate; the upper end of the telescopic rod 85 And a smoothing assembly 87 is provided to make the telescopic rod 85 contact with the inner wall of the ladder tubes 81, 82 by the smoothing assembly 87 to avoid shaking; the base 84 includes a rubber foot pad 841, a middle cover 842 and an upper cover.
  • the plate 843, the middle cover 842 and the upper cover 843 are interlocked and enclose the ball seat 86 to facilitate the adjustment of the steering by the telescopic rod 85.
  • a tension control mechanism 88 is disposed at a middle portion of the telescopic rod 85.
  • the tension control mechanism 88 is mainly disposed with a top oblique spring 882 disposed inside a base 881, and the upper end of the top oblique spring 882 is abutted against a one-way card.
  • the iron piece 883, the upper end of the one-way cassette iron piece 883 is further attached to a diagonal block 884, and the center of the one-way card iron piece 883 and the inclined block 884 is provided with a hole (not shown) for the telescopic rod 85 to pass through.
  • the telescopic rod 85 when the one-way latching iron piece 883 is inclined, the telescopic rod 85 is caught by the oblique hole edge, so that the telescopic rod 85 can only be stretched upwards and cannot be retracted, so as to ensure the safety of the ladder frame. Therefore, the telescopic rod 85 has to adjust the height difference of the ladder legs through the one-way card iron piece 883.
  • One end of the one-way latching iron piece 883 is provided with a trigger 885.
  • the trigger 885 is pulled up, the one-way latching iron piece 883 is pushed back horizontally. At this time, the hole edge is disengaged and stretched.
  • the telescopic rod 85 is freely retracted.
  • the extension ladder of the present invention is further provided with a lock display function.
  • a window frame 323, 324 is opened on both sides of the shaft joint portion 32 of the connection kit 3, and then two The display sheets 91 and 92, which are respectively indicated on the outer surface and have two regions 9a and 9b, are placed in the window frames 323 and 324.
  • One end of the first display sheet 91 is provided with a lateral pin 93, and one end of the second display sheet 92 is provided.
  • a transverse sleeve hole 94 is provided.
  • a transverse hole 951 is defined in the rod body of the lock lever 95.
  • the first display piece 91 is inserted into the horizontal hole 951 by the pin 93, and then inserted into the sleeve hole 94 of the second display 92 to be combined.
  • a window 961 for exposing the first region 9a or the second region 9b of the display sheet is provided on both sides of the lateral riser 96. The operator can display the first area 9a or the second area 9b through the observation window 961 to determine whether the lock lever is securely locked to ensure safe use.
  • FIG. 21A is an enlarged view of a portion A in FIG. 20, showing that the second region 9b is in the window hole %1 when the lock bar is inserted into the through hole of the ladder column unit.
  • Fig. 21B is an enlarged view of a portion B in Fig. 20, showing that the first region 9a is displayed in the window 961 after the lock lever is withdrawn from the through hole of the ladder column unit. Thereby, the operator can determine whether the lock lever is locked from the external window 961 to improve the safety of use.
  • the structure of the extension ladder of the present invention is improved by providing a fixed top pin at the upper end of the connection kit and a convex neck portion of the upper end nozzle of the ladder column unit, and the lower end portion of the ladder column unit is convex.
  • the convex ring portion and the like can prevent the ladder column unit from being inadvertently detached during stretching, and the overall assembly is not only more convenient but also easy to handle. With the arrangement of the compartment unlocking block and the auxiliary elastic stand, the use of the extension ladder is wider and more stable.
  • the extension ladder structure of the present invention by providing a fixed top pin at the upper end of the connection kit, and providing an inner convex ring neck portion of the upper end nozzle of the ladder column unit, the lower end portion of the ladder column unit is provided with a convex shape.
  • the convex ring portion and the like can prevent the ladder column unit from being inadvertently detached during stretching, and the overall assembly is not only more convenient but also easy to handle.
  • the use of the compartment unlocking block and the auxiliary elastic stand makes the use of the ladder wider and more stable.
  • the improvement of the structure of the extension ladder of the present invention has the advantages of improving the safety of use and facilitating the collection and quickness, and these effects can indeed improve the lack of the common ladders.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Description

伸缩梯 技术领域 本发明涉及一种伸缩梯结构的改进, 特别是指组装结构更为稳固确实, 使用后能确 实收合, 并且使用更为安全的伸缩梯结构。 背景技术 梯架的使用已成为人们不可或缺的工具, 例如梯子或鹰架等登高器具, 都是提供人 们可以轻易且快速地取得设于髙处物品的有效工具。
一般的梯架, 如图 1A所示, 该梯架 800, 由两个梯柱相接组成, 梯柱下端设有脚垫 以防止打滑, 其间则设有相隔适当距离之踏板, 使用时呈 A字型。 该传统式梯架, 由于 其整体体积大, 携带不便, 收合后亦会占用偌大空间, 缺乏使用弹性。
为了改良图 1A 所示的固定式梯架, 美国 4, 989, 692、 5, 492, 430、 5, 495, 915、 2004/0195043A, 6, 708, 800、 5, 743, 355等案都提出了伸缩式的梯子结构, 但是, 综观该 等伸缩式梯子等专利案, 其收合时仍需逐层分别控制, 无法达到自动收合, 使用上仍不 甚理想。
为了改善既有伸缩梯之缺失, 本案发明人在 2006年 4月 29日向中国专利局提出第 200620113407. 6号 「伸缩梯」 专利申请案, 并获得新型专利第 899705号证书。
请参照图 1B所示, 为中国第 200620113407. 6号 「伸缩梯」 专利案之局部示图。 该图 表示当第一层横向梯板内部的锁固机构被拉动后, 透过一连动板 801作跷跷板动作, 使连 动板 801的一端伸出梯板之上端通孔,再以向外伸出的部份穿入上层横向梯板之底部通孔 802, 然后推动设于上层横向梯板内部之拨键 803, 使上层横向梯板内部之锁杆退出, 形 成开锁动作, 藉此使第二层以上之锁固机构可以自动依序被打开, 各节梯柱单元即可依 序落下收合。
然而, 发明人在完成上述中国第 200620113407. 6号 「伸縮梯」 专利案后, 经过不断 测试使用发现, 设于梯板上方或下方的孔洞在伸缩梯使用于较脏污环境时, 孔洞易被灰 尘和其它脏污物所填塞, 以致连动板无法顺利动作, 拨键无法被顺利推动而造成开锁失 效或是其它问题。
而且,要完成开锁,必需透过连动板 801来推动拨键 803,只要有一连动板 801被卡住, 或无法穿透通孔, 整个梯架即无法顺利收缩, 造成若干使用上的不便。
而相互伸缩套合的梯柱单元, 更因为欠缺有效的卡固机构, 使得在使用者拉伸使用 时, 稍有不慎即会造成上节梯柱单元和下节梯柱单元脱离, 造成使用上的不安全。 发明内容 为了解决上述问题, 本发明提供一种伸缩梯结构的改进, 使经由多节梯柱单元、 连 接套件、 锁固机构及横向梯板所组成之伸缩梯, 其结构更为简化, 安全可靠度更髙, 并 且能有效解决上述常见伸缩梯的问题, 而传动零件被大量的减少, 需要加工的部位和技 术性也相对降低, 节省成本, 进一步减少了问题发生的机率。
依本发明之伸縮梯结构的改进, 系在用以套设至梯柱单元之连接套件的上端, 设置 一固定式顶销, 连接套件的内部设置一锁固机构, 连接套件的一端再以一横向梯板包覆; 藉此, 当下方连接套件的固定式顶销由下往上穿入上方连接套件内部后, 得推动设于上 方连接套件内部之锁固机构, 进而开锁, 而藉由顶销为固定式设置, 能避免因为外力而 损坏或者无法动作的问题。
依本发明之伸缩梯结构的改进, 另设有一隔间开锁块, 该隔间开锁块可套设在固定 式顶销的上端, 且该隔间开锁块的上端具有和顶销相同大小的隔间顶销, 当隔间开锁块 套设至固定式顶销的上端时,同样地可利用隔间顶销推动上方连接套件内部之锁固机构, 而且使上方梯板和下方梯板收合时能保持一隔间空间, 以提供使用于特殊场合时, 缆线 或电线可以穿通, 或者长时间需戴手套的操作人员便于握持操作。
依本发明之伸缩梯结构的改进, 又设有一辅助弹性脚架, 该辅助弹性脚架装设于伸 缩梯底端后, 除了可增加伸缩梯的底面积, 提高使用安全性外, 又可根据不同、 不平或 有阶段落差的地面, 适时调整, 不仅能增加伸缩梯使用的场所、 范围, 而且增加伸缩梯 的稳定度。
依本发明之伸缩梯结构的改进, 其上节梯柱单元和下节梯柱单元之间并设有不会滑 脱之卡固机构, 为本发明的又一目的。
至于本发明之详细构造、 应用原理、 作用与功效, 则参照下列依附图所作之说明即 可得到完全的了解。 附图说明 图 1A为常见梯架的立体图;
图 1B为第 095108511号案之局部剖面图;
图 2为本发明之伸缩梯收合示图;
图 3为本发明之伸缩梯展开使用示图;
图 4为本发明之实施例的第一层梯柱单元及其锁固机构之立体分解示图;
图 5为本发明之实施例的局部剖面图;
图 6为本发明之实施例的梯柱单元表面图; 图 7为本发明之实施例的第二层以上梯柱单元及其锁固机构之立体分解示图; 图 8为本发明之实施例的组合立体示图;
图 9为本发明之实施例的连接套件的另一角度立体图;
图 10为本发明之实施例其未收前之平面示图;
图 11为本发明之实施例其未收后之平面示图;
图 12为本发明之第二实施例的立体图;
图 13为本发明之第二实施例其未收后之平面示图;
图 14为第 13图的局部放大图;
图 15为本发明之第三实施例的平面图;
图 16为本发明之第三实施例的辅助弹性脚架立体示图;
图 17为本发明之第三实施例的辅助弹性脚架之局部平面示图;
图 18为本发明之第三实施例的辅助弹性脚架之局部立体图;
图 19为本发明之第四实施例的立体分解图。
图 20为本发明之伸缩梯部份收合示图。
图 21A为第 20图中 A部份的放大图。
图 21B为第 20图中 B部份的放大图。
【图式中组件名称与符号对照】
800: 梯架 801: 连动板 802: 底部通孔 803: 拨键
1: 伸缩梯 2: 梯柱单元 3: 连接套件 5: 横向梯板
2a: 上节梯柱单元 3a: 上层连接套件 21: 卡孔 22: 定位孔
23: 穿固孔 24: 外凸环 25: 内凸环 26: 扣孔
201: 环颈部 202: 凸环部 30: 贯穿孔 31: 环套部
32: 轴接部 33: 螺丝 34: 定位榫头 35: 黏液流道
36: 注胶孔 37: 通道 38: 直槽 39: 轴槽
300: 固定式顶销 310: 缺口 321、 322: 边板 323、 324: 窗框
4a: 第一层锁固机构 4b : 上层锁固机构 41 : 挡板 42: 锁杆
43: 弹簧 44: 拉杆 45: 手动控制钮 46: C型片
411: 通孔 421: 连接端 422: 狭槽 410: 锁杆
420: 弹簧 430: 套管 440: 拨键 431: 立板
411: 嵌槽 442: 底板 443: 凸块 444: 凸轴
451: 导板 452: 水平槽沟 51: 通孔 6: 缓冲组件
61: 卡勾 62: 弹性封圈 63: 胶膜 7: 隔间开锁块
71: 隔间顶销 72: 顶销套槽 73: 隔间空间 8: 辅助弹性脚架 81、 82: 梯管 83: 梯板 84: 底座 85 : 伸缩杆 86: 球座 87: 平稳组件 841: 橡胶脚垫 842: 中盖板
843: 上盖板 88: 拉伸控制机构 881: 基座 882: 顶斜弹簧
883: 单向卡挚铁片 884: 斜块 885: 板机 9a、 9b: 区域
91、 92: 显示片 93: 插销 94: 套孔 95: 锁杆
951: 横孔 96: 横向梯板 961: 窗孔
具体实施方式 下面结合附图对本发明的具体实施例加以说明。
本发明之伸縮梯结构的改进, 如图 2所示, 伸缩梯 1, 可如图 2所示呈收合状, 或如 图 3所示呈拉伸展开状。所示伸缩梯 1包括有多数梯柱单元 2、连接套件 3及横向梯板 5, 其展开使用时为节节高升之梯架, 收合时则藉各节梯柱单元互为不同管径而相互套合。
请参照图 4所示, 本发明之伸縮梯, 各梯柱单元 2为中空管状, 且彼此相互套合, 即 在第一节梯柱单元 2的内部套设管径较小但形状相同的第二节梯柱单元 2a, 第二节梯柱 单元 2a可以在第一节梯柱单元 2的内部上下滑动,其它节梯柱单元依相同情形相互套设。
如图 4所示, 在第一节梯柱单元 2的上端设有卡孔 21及定位孔 22, 以供连接套件 3 可以与之结合。
如图 4所示, 所述之连接套件 3, 包括有一可供套设至梯柱单元上端的环套部 31, 以及一自环套部 31向外延伸的轴接部 32; 该环套部 31套至梯柱单元上端后, 可藉螺丝 33锁紧固定, 其内壁设有可供嵌入梯柱单元之卡孔 21的定位榫头 34, 并凹设有黏液流 道 35, 黏液流道 35的一端设有注胶孔 36, 以便注入黏着剂使之与梯柱单元紧密黏着; 而环套部 31上又设有一贯穿孔 30, 该贯穿孔 30在环套部 31套设至梯柱单元上端后, 系和梯柱单元 2的定位孔 22相通。
所述之轴接部 32, 系和环套部 31—体成型, 其内部形成有信道 37, 信道 37和贯穿 孔 30相通, 通道 37的两侧为边板 321、 322, 边板 321、 322的内壁面设有一直槽 38; 轴接部 32的外部则套设一横向梯板 5, 横向梯板 5的下方板面设一通孔 51。
一第一层锁固机构 4a, 设于第一层连接套件 3的通道 37内部, 其包括有一挡板 41、 一锁杆 42、 一弹簧 43、 一拉杆 44和一手动控制钮 45; 所述之挡板 41, 系插入并固定于 轴接部 32的直槽 38内, 其中央设一通孔 411, 使拉杆 44的结合端 441穿过该通孔 411 后和锁杆 42之连接端 421结合,锁杆 42的一端得穿过连接套件 3之贯穿孔 30以及梯柱 单元 2之定位孔 22, 锁杆 42的杆体上并设有一狭槽 422, '以供一 C型片 46插入该狭槽 422后得用以限制弹簧 43, 藉此, 当锁杆 42被拉杆 44拉移时, 得靠着弹簧 43的力量回 复原位。
上述第一层锁固机构 4a之挡板 41、 锁杆 42、 弹黉 43和拉杆 44均设于连接套件 3 的通道 37内部, 并且为一横向梯板 5所包覆, 拉杆 44的一端则和一设置在横向梯板 5 下方的手动控制钮 45相接, 使手动控制钮 45可以从外部控制锁杆 42的动作; 该手动控 制钮 45, 其上端设一导板 451, 导板 451的下端形成水平槽沟 452, 使其可用迫紧的方 式将导板 451推入横向梯板 5的通孔 51内, 并且借着水平槽沟 452在通孔 51的孔缘移 位滑动。
如图 4所示, 第二节以上的梯柱单元 2a, 其外部设有一穿固孔 23, 穿固孔 23的下 方设置一外凸环 24, 而第一节梯柱单元 2的内面则设有相对之内凸环 25 (如图 5所示), 使梯柱单元 2a在第一节梯柱单元 2内部上下移动时得借着外凸环 24和内凸环 25抵接, 使穿固孔 23得对位至第一节梯柱单元 2的定位孔 22, 以便锁杆 44能贯穿该穿固孔 23, 达到上节梯柱单元和下节梯柱单元相对拉伸展开固定。
此外, 第二节以上的梯柱单元 2a, 其下端更设有一扣孔 26, 以供以一缓冲组件 6得 • 藉一凸扣 61扣固于梯柱单元之扣孔 26, 而固定于梯柱单元 2a下端; 该缓冲组件 6的下 段外围系设有一弹性封圈 62, 使其在梯柱单元内部上下移动时, 能和梯柱单元内壁保持 适当磨擦力, 以减少噪音的产生, 弹性封圈 62并具有缓冲收合的功能; 而且, 缓冲组件 6的内部又设有一胶膜 63, 胶膜 63上面形成有孔, 俾缓冲组件 6上下移动时, 空气可经 孔进入胶膜 63之内, 促进缓冲效果。
如图 6所示, 为了避免两梯柱单元轻易滑脱, 本发明之梯柱单元, 其上端管口处系 设置有内凸之环颈部 201, 其下端管口处则设置有外凸之凸环部 202, 藉此, 当上节梯柱 单元由下往上穿入下节梯柱单元内部后, 可藉环颈部 201和凸环部 202相对限制, 避免 梯柱单元彼此滑脱, 确保使用之安全。
请再参照图 7, 主要表示第二节以上梯柱单元 2a之上层锁固机构 4b、上层连接套件 3a和上层横向梯板 5a, 和第一层均略有不同, 第一层横向梯板 5a的下方可不设置通孔。
如图 7所示, 上层连接套件 3a除了具备第一层连接套件 3之结构外, 在边板 321、 322的内壁面增设有一轴槽 39; 而且, 连接套件 3a之环套部 31的底端, 和轴接部 32相 接的部位设有一缺口 310。
设于上层连接套件 3a内部之上层锁固机构 4b, 则包括一锁杆 410、 一弹簧 420、 一 套管 430和一拨键 440; 所述之套管 430, 其设有一立板 431, 立板 431两侧可插入并固 定于轴接部 32的直槽 38内, 套管 430内部可供锁杆 410的一端套入, 在锁杆 410插入 套管 430的一端上则设置弹簧 420, 使锁杆 410具有水平移动及复位之功能; 该锁杆 410 的杆体上并设有一嵌槽 411, 以供嵌设拨键 440。
如图 7所示, 该拨键 440, 略呈 V形体, 其一端为叉臂 441 , 叉臂 441可叉入锁杆 410之嵌槽 411, 其另一端为底板 442, 底板 442的末端形成向下凸出之凸块 443; 而且 拨键 440在叉臂 441和底板 442相接处又形成有凸轴 444, 使拨键 440得藉凸轴 444嵌 入上层连接套件 3a之轴槽 39, 其凸块 443则得以从缺口 310露出(如图 8所示)。
请参照图 9所示, 不论是第一层连接套件 3或上层连接套件 3a, 在环套部 31的上 端均设置有一向上凸出的固定式顶销 300,固定式顶销 300和连接套件 3 (3a)为一体成型, 由于其系形成于环套部 31之上端, 其并不会受到横向梯板 5所包覆, 该固定式顶销 300 正好对准上层连接套件 3a之缺口 310。
实施时, 如图 10、 11所示, 当手动控制钮 45向梯架中央移拨时, 经拉杆 44带动锁 杆 42退出梯柱单元之穿固孔 23, 上节梯柱单元 2a、 上层连接套件 3a和上层横向梯板 5a, 则在锁杆 42退出其穿固孔 23后落下, 当上层连接套件 3a落下和第一层连接套件 3 贴合时 (如图 11所示) , 第一层连接套件 3上端之固定式顶销 300穿入上层连接套件 3a之缺口 310, 同时推动上层锁固机构内部拨键 440之凸块 443, 使拨键 440摆转, 再 透过拨键 440之叉臂 441带动锁杆 410后退, 当锁杆 410退出第三层梯柱单元之穿固孔 后, 第三层梯柱单元、 连接套件和横向梯板同时落下, 然后再以第三层连接套件之固定 式顶销 300推顶第四层之拨键, 再令第四层梯柱单元、 连接套件和横向梯板落下, 达到 只要拨动第一层之手动控制钮 45, 即可使各层梯柱单元依序落下收合; 而且, 透过缓冲 组件 6和弹性封圈 62的设置,各层梯柱单元不论是拉伸展开或落下收合均能达到无噪音 之缓冲升降。
藉由上述构成, 本发明之伸缩梯, 透过简易的结构组成, 不仅减少零件的设置成本,. 且能增加使用可靠度, 而其将开锁机构隐藏在内部又能避免使用者因为开锁之拨键被误 触而发生危险。
图 12为本发明之第二实施例的立体图, 如图 12所示, 本发明之伸缩梯另外设置有 一隔间开锁块 7, 该隔间开锁块 7的上端具有和顶销相同大小的隔间顶销 71, 其下端则 设有和顶销相同的顶销套槽 72, 以该隔间开锁块 7套设至固定式顶销 300上端时, 如同 固定式顶销 300向上升高。
请参照图 13、 14所示, 藉由隔间开锁块 7套设至固定式顶销 300的上端, 可利用隔 间顶销 71推动上方连接套件内部的拨键 440, 达到开锁, 其不仅不会影响依序开锁的连 动机构, 而且能在上方横向梯板 5a和下方横向梯板 5收合后保持一隔间空间 73, 该隔 间空间 73可提供伸缩梯使用于特殊场合时供缆线或电线穿通,或者提供长时间需戴手套 的操作人员便于握持操作。
请参照图 15所示,系本发明之伸缩梯的另一实施例,在伸缩梯 1的下方设置一组辅 助弹性脚架 8, 藉由辅助弹性脚架 8的设置, 不仅能增加伸缩梯的底面积, 提高使用安 全性, 又可根据不同、 不平或有阶段落差的地面, 适时调整, 使伸缩梯的适用场所更广, 而且更加平稳。
请参照图 16、 17、 18所示, 该组辅助弹性脚架 8, 包括有两可和梯柱单元套合之梯 管 81、 82, 两梯管 81、 82之间设一梯板 83, 梯管 81、 82的下端设置底座 84, 底座 84 的上端设置一伸缩杆 85, 伸缩杆 85的下端藉一球座 86和底座 84结合, 使伸缩杆 85可 以自由转动方向; 伸缩杆 85的上端并设置一平稳组件 87, 使伸縮杆 85借着平稳组件 87 和梯管 81、 82内壁接触, 避免摇晃; 所述之底座 84系包括有一橡胶脚垫 841、 一中盖 板 842和一上盖板 843, 中盖板 842和上盖板 843得互扣并包住球座 86, 以利伸缩杆 85 调整转向。 此外, 伸缩杆 85的中段处复设有一拉伸控制机构 88, 该拉伸控制机构 88主要系于 一基座 881内部设置一顶斜弹簧 882, 顶斜弹簧 882的上端顶抵一单向卡挚铁片 883, 单 向卡挚铁片 883上端再贴合至一斜块 884,单向卡挚铁片 883和斜块 884的中央设有孔(图 未示)以供伸缩杆 85穿过; 藉此, 当单向卡挚铁片 883呈斜向时, 透过斜向孔缘卡住伸 缩杆 85, 使伸缩杆 85仅能向上拉伸, 无法收回, 以确保梯架使用的安全, 因此, 透过 单向卡挚铁片 883, 伸缩杆 85得调整梯脚的高度落差。
单向卡挚铁片 883的一端并设有一板机 885, 当板机 885被往上扳时, 带动单向卡 挚铁片 883被压回呈水平状, 此时, 由于孔缘脱离和伸缩杆 85的卡挚状态, 伸缩杆 85 得以自由收回。
请参照图 19, 本发明之伸缩梯, 其又具备有锁扣显示功能, 如图 19所示, 系在连接 套件 3的轴接部 32两侧各开设一窗框 323、 324, 再将两片于外表面各标示两个区域 9a、 9b之显示片 91、 92置入该窗框 323、 324之内, 其中第一显示片 91的一端设有一横向 插销 93,第二显示片 92的一端设有一横向套孔 94;再于锁杆 95的杆体上设一横孔 951, 使第一显示片 91以插销 93穿过横孔 951后, 再插入第二显示 92的套孔 94而组合。 而 在横向梯板 96的两侧边则各设有一仅供显示片之第一区域 9a或第二区域 9b露出的窗孔 961。 操作者即可透过观察窗孔 961显示第一区域 9a或第二区域 9b, 确定锁杆是否安全 上锁, 以确保使用之安全。
请参照图 20、 21A、 21B所示, 其中, 图 21A为第 20图中 A部份的放大图, 显示在 锁杆插入梯柱单元之穿固孔时, 第二区域 9b于窗孔%1中显示; 图 21B为第 20图中 B 部份的放大图, 显示在锁杆退出梯柱单元之穿固孔后, 第一区域 9a于窗孔 961中显示。 藉此提供操作者可从外部窗孔 961确定锁杆是否上锁定位, 以提升使用之安全。
因此, 本创作之伸缩梯之结构的改进, 藉由在连接套件上端设置固定式顶销, 以及 使梯柱单元的上端管口设置内凸之环颈部, 梯柱单元的下端部设置外凸之凸环部等, 确 能避免梯柱单元在拉伸时不慎脱离, 整体组装不仅更加便利, 而且容易操控。 而藉由隔 间开锁块及辅助弹性脚架的设置, 使伸梯的使用范围更广, 且更稳定。
因此, 本发明之伸缩梯结构的改进, 藉由在连接套件上端设置固定式顶销, 以及使 梯柱单元的上端管口设置内凸之环颈部, 梯柱单元的下端部设置外凸之凸环部等, 确能 避免梯柱单元在拉伸时不慎脱离, 整体组装不仅更加便利, 而且容易操控。 而藉由隔间 开锁块及辅助弹性脚架的设置, 使伸梯的使用范围更广, 且更稳定。
综上所述, 本发明之伸缩梯结构的改进, 确实具有提升使用安全、 收装方便快速之 功效, 该等功效确实可以改进目前常见梯子的缺失。
最后应说明的是: 以上实施例仅用以说明本发明而并非限制本发明所描述的技术方 案; 因此, 尽管本说明书参照上述的各个实施例对本发明已进行了详细的说明, 但是, 本领域的普通技术人员应当理解, 仍然可以对本发明进行修改或等同替换; 而一切不脱 离发明的精神和范围的技术方案及其改进, 其均应涵盖在本发明的权利要求范围当中。

Claims

权 利 要 求 书
1、 一种伸缩梯结构的改进, 包括:
多数梯柱单元, 各梯柱单元为中空梯管, 各梯柱单元彼此具有不同管径使其可以相 互拉伸套合, 梯柱单元的上端设有定位孔;
多数连接套件, 各以一环套部套设固定于前述梯柱单元的上端, 环套部上设有和梯 柱单元之定位孔相通之贯穿孔; 环套部的一端向外延伸一轴接部, 轴接部中间形成通道; 多数横向梯板, 套设至上述轴接部的外部; ■
多数锁固机构, 各设置于上述连接套件之通道内部, 其包括:
一可供穿过环套部的贯穿孔以及梯柱单元的定位孔的锁杆;
一设于锁杆一端使锁杆复位之弹簧;
一用以固定锁杆和弹簧于一位置的板片; 以及
一可用以拨动前述锁杆移位的拨键;
其特征在于: 所述连接套件的环套部上端设有一凸出顶销, 该凸出顶销对位至上方 连接套件内部之拨键的一端, 当上方连接套件和下方连接套件贴合时, 下方连接套件的 凸出顶销可推顶上方连接套件内部的拨键, 使拨键旋摆, 带动锁杆退出上节梯柱单元的 定位孔, 使上节梯柱单元可依序自动落下收合, 并且, 能避免用以控制锁杆移动的拨键 被误触碰而产生误动作, 而造成使用上的不安全。
2、 如权利要求 1所述的伸缩梯结构的改进, 其中所述梯柱单元, 其上端管口内设有 内凸之环颈部, 其下端管外设有外凸之凸环部, 当上节梯柱单元穿入下节梯柱单元内部 后, 可藉上节梯柱单元之凸环部和上节梯柱单元之环颈部相对限制, 以避免梯柱单元滑 脱。
3、 如权利要求 1所述的伸缩梯结构的改进, 其中所述顶销系固定式直立设置。
4、 如权利要求 1所述的伸缩梯结构的改进, 其中所述顶销系和连接套件的环套部一 体成型。
5、 如权利要求 1所述的伸缩梯结构的改进, 其中所述锁固机构, 其设于最底层连接 套件的内部时, 锁杆的一端经连杆与一可横向移位的手动控制钮连接, 该手动控制钮设 于横向梯板的外部, 可令使用者可从外部操作手动控制钮, 以控制第二层以上的梯柱单 元依序自动落下收合。
6、 如权利要求 1所述的伸缩梯结构的改进, 其中又包括一隔间开锁块, 该隔间开锁 块的下端设有套槽, 可供套设于顶销之上, 其上端则设有一向上凸出之顶销, 当隔间开 锁块套设至顶销上方时, 以使上方横向梯板和下方横向梯板收合后形成一隔间空间。
7、 如权利要求 1所述的伸缩梯结构的改进, 其中又包括一组辅助弹性脚架, 该组辅 助弹性脚架设置于整个伸縮梯的底端, 以辅助伸縮梯使用于不平地面或阶梯落差地面时, 予以辅助平衡。
8、 如权利要求 7所述的伸缩梯结构的改进, 其中所述辅助弹性脚架包括:
一可和梯柱单元套合之梯管;
一设于梯管下方之底座;
一和上述底座连接之伸缩杆; 以及
一可调整伸縮杆作伸缩动作之拉伸控制机构。
9、 如权利要求 8所述的伸縮梯结构的改进, 其中所述辅助弹性脚架之伸缩杆, 其下 端藉一球座和底座结合, 使其可作任一角度调整。
10、 如权利要求 9所述的伸缩梯结构的改进, 其中所述底座包括一脚垫、 一中盖板和 一上盖板, 中盖板和上盖板相互勾扣并包住球座, 以方便伸缩杆调整转向。
11、 如权利要求 8所述的伸缩梯结构的改进, 其中所述拉伸控制机构, 系于一基座内 部设置一顶斜弹簧, 顶斜弹簧的上端顶抵一单向卡挚铁片, 单向卡挚铁片上端贴合一斜 块, 藉此使伸缩杆能够向下自由调整, 向上时则藉单向卡挚铁片予以卡住固定, 以便调 整梯脚的高度落差。
12、如权利要求 1所述的伸缩梯结构的改进, 其中所述单向卡挚铁片的一端设有一板 机, 当板机被往上扳起时, 带动单向卡挚铁片被压回呈水平状, 使伸缩杆得以自由收回。
13、 如权利要求 1所述的伸缩梯结构的改进, 其中复设有一组显示片, 该组显示片 和锁杆构成一体, 而可随着锁杆前后移动, 所述环套部之轴接部设有提供显示片前后移 动之窗框, 而所述横向梯板则设有提供局部显示片显露的窗孔, 藉此提供使用者可从显 示片显示的部位确定锁杆是否上锁定位。
14、 如权利要求 13所述的伸缩梯结构的改进, 其中所述显示片的外部表面为设有于 可显示锁杆上锁状态的第一区域以及显示锁杆退锁状态的第二区域。
15、 如权利要求 13所述的伸缩梯结构的改进, 其中所述该组显示片, 为包括有两显 示片, 其中之一显示片设有一插销, 而另一显示则设有可供插销套入的套孔, 且锁杆的 杆体上设有可供插销穿过的横孔, 藉此提供两显示片可和锁杆结合并一起连动者。
16、 一种伸缩梯结构的改进, 包括:
多数梯柱单元, 各梯柱单元为中空梯管, 各梯柱单元彼此具有不同管径使其可以相 互拉伸套合;
多数连接套件, 各以一环套部套设固定于前述梯柱单元的上端, 环套部的一端设有 延伸之轴接部;
多数横向梯板, 套设至上述轴接部的外部;
多数锁固机构, 各设置于上述连接套件之轴接部内;
其特征在于: 所述伸缩梯的下端设有一辅助弹性脚架, 该组辅助弹性脚架能够辅助 伸缩梯使用于不平地面或阶梯落差地面时的稳定平衡。
17、 如权利要求 16所述的伸缩梯结构的改进, 其中所述辅助弹性脚架包括:
一可和梯柱单元套合之梯管;
一设于梯管下方之底座;
一和上述底座连接之伸缩杆; 以及
一可调整伸缩杆作伸縮动作之拉伸控制机构。
18、 如权利要求 17所述的伸缩梯结构的改进, 其中所述伸缩杆的下端藉一球座和底 座结合, 使其可作任一角度调整。
19、 如权利要求 18所述的伸缩梯结构的改进, 其中所述底座包括有一脚垫、 一中盖 板和一上盖板, 中盖板和上盖板互扣并包住球座, 以利伸缩杆调整转向。
20、 如权利要求 17所述的伸缩梯结构的改进, 其中所述拉伸控制机构, 系于一基座 内部设置一顶斜弹簧, 顶斜弹簧的上端顶抵一单向卡挚铁片, 单向卡挚铁片上端贴合一 斜块, 单向卡掣铁片和斜块并设有供伸缩杆穿过的孔, 藉此, 使单向卡挚铁片呈斜向时, 藉斜向孔缘卡住伸縮杆, 使伸縮杆仅能向上调整, 无法收回。
21、 如权利要求 20所述的伸缩梯结构的改进, 其中所述单向卡挚铁片的一端并设有 一板机, 当板机被往上扳起时, 带动单向卡挚铁片被压回呈水平状, 使伸缩杆得以自由 收回。
PCT/CN2008/001650 2008-09-25 2008-09-25 伸缩梯 Ceased WO2010034135A1 (zh)

Priority Applications (10)

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JP2011600032U JP3171708U (ja) 2008-09-25 2008-09-25 折りたたみ梯子
AU2008362048A AU2008362048B2 (en) 2008-09-25 2008-09-25 An extension ladder
US13/120,775 US8869939B2 (en) 2008-09-25 2008-09-25 Extension ladder
DK08800642.4T DK2343433T3 (en) 2008-09-25 2008-09-25 Extendable ladder
CN200880131240.8A CN102741494B (zh) 2008-09-25 2008-09-25 改进的伸缩梯结构
CA2738370A CA2738370C (en) 2008-09-25 2008-09-25 An extension ladder
KR2020117000011U KR20110006590U (ko) 2008-09-25 2008-09-25 신축 사다리
PCT/CN2008/001650 WO2010034135A1 (zh) 2008-09-25 2008-09-25 伸缩梯
EP08800642.4A EP2343433B1 (en) 2008-09-25 2008-09-25 An extension ladder
ZA2011/02091A ZA201102091B (en) 2008-09-25 2011-03-22 An extension ladder

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CN (1) CN102741494B (zh)
AU (1) AU2008362048B2 (zh)
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US20110192679A1 (en) 2011-08-11
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CN102741494A (zh) 2012-10-17
CN102741494B (zh) 2015-03-25
CA2738370C (en) 2014-12-09
DK2343433T3 (en) 2017-08-28
CA2738370A1 (en) 2010-04-01
KR20110006590U (ko) 2011-06-29
EP2343433B1 (en) 2017-05-31
AU2008362048B2 (en) 2014-09-25
JP3171708U (ja) 2011-11-17
EP2343433A4 (en) 2016-01-20
US8869939B2 (en) 2014-10-28

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