WO2014110913A1 - 一种梯具连接用的厚板式关节锁 - Google Patents

一种梯具连接用的厚板式关节锁 Download PDF

Info

Publication number
WO2014110913A1
WO2014110913A1 PCT/CN2013/083712 CN2013083712W WO2014110913A1 WO 2014110913 A1 WO2014110913 A1 WO 2014110913A1 CN 2013083712 W CN2013083712 W CN 2013083712W WO 2014110913 A1 WO2014110913 A1 WO 2014110913A1
Authority
WO
WIPO (PCT)
Prior art keywords
thick plate
joint lock
ladder
plate joint
groove
Prior art date
Application number
PCT/CN2013/083712
Other languages
English (en)
French (fr)
Inventor
苗晓春
Original Assignee
Miao Xiaochun
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 Miao Xiaochun filed Critical Miao Xiaochun
Priority to AU2013373963A priority Critical patent/AU2013373963B2/en
Priority to US14/380,037 priority patent/US20150315844A1/en
Publication of WO2014110913A1 publication Critical patent/WO2014110913A1/zh
Priority to US15/479,076 priority patent/US10487580B2/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/50—Joints or other connecting parts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/06—Devices for limiting the opening movement of hinges
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/10—Devices for preventing movement between relatively-movable hinge parts
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/10—Devices for preventing movement between relatively-movable hinge parts
    • E05D11/1007—Devices for preventing movement between relatively-movable hinge parts with positive locking
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/10—Arrangements for locking

Definitions

  • the utility model relates to a structural component for connecting ladders, in particular to a thick plate joint lock for ladder connection.
  • the thick plate joint lock 10 includes an inner piece 11 and an outer piece 12 superposed on both sides of the inner piece, and the inner piece 11 and the outer piece 12 are relatively rotatable, the thickness
  • the plate joint lock 10 further includes a positioning bushing 13 for locking and positioning the inner piece 11 and the outer piece 12, the positioning bushing 13 has a rotating shaft 14 and a locking pin 15, and the outer piece 12 is further
  • a limiting post 16 is fixed, and the limiting post 16 is in contact with the outer circular arc surface 110 of the inner piece 11 when the inner piece 11 and the outer piece 12 are rotated at an angle of 180°.
  • the limit post 16 can increase the load bearing performance of the thick plate joint lock 10.
  • the inner panel 11 and the outer panel 12 of the thick plate joint lock 10 can be rotated to a set angle and then locked.
  • the positioning sleeve 13 is normally set to expand at an angle of the inner panel 11 and the outer panel 12. Locked at 0°, 36° and 180°.
  • the surface is an outer circular arc surface, and the limiting column will have a certain displacement on the outer circular arc surface, so that the load-bearing angle of the upper and lower ladders exceeds 180°, the greater the force, the larger the displacement, the relative rotation of the inner and outer sheets The greater the angle, the lower the load-bearing performance of the entire ladder, thus increasing the likelihood of failure of the entire ladder test.
  • the prior art solution is to improve the load-bearing performance of the whole ladder by strengthening the strength of the thick plate joint lock or the strength of the whole ladder, which will inevitably greatly increase the cost of the entire ladder. Summary of the invention
  • the object of the present invention is to provide a thick plate type joint lock with better load bearing performance, more safety and reliability.
  • the present invention provides a thick plate type joint lock for connecting a ladder, the thick plate type joint lock comprising an inner piece and an outer piece superposed on both sides of the inner piece, the inner piece and the outer piece
  • the slab joint lock further includes a positioning sleeve for locking and positioning the inner piece and the outer piece, and the outer piece is further provided with a limiting post, wherein: the inner part
  • the sheet has a groove for limiting the displacement of the limiting post, and the limiting post partially or completely enters the groove when the inner piece and the outer piece are rotated at an angle of 180°.
  • the limiting post is a cylinder
  • the bottom surface of the groove is an inwardly concave curved surface
  • the curved surface is tangentially matched with the outer peripheral surface of the limiting post.
  • the radius of the curved face is greater than or equal to the radius of the limit post.
  • the depth of the groove is greater than or equal to the radius of the limiting post.
  • the thick plate type joint lock provided by the utility model has a groove on the inner piece, and the groove can be restricted when the inner piece and the outer piece are relatively rotated at an angle of 180°.
  • the limit column generates displacement, thereby enhancing the bearing capacity of the thick plate joint lock, Make it more secure and reliable.
  • Fig. 1 is a front elevational view showing the prior art thick plate joint lock for the ladder connection being expanded to 36°.
  • Fig. 2 is a rear elevational view of the prior art thick plate joint lock for the ladder connection being expanded to 36°.
  • Fig. 3 is a left side view of the prior art thick plate joint lock for the ladder connection being expanded to 36°.
  • Fig. 4 is a front elevational view showing the prior art slab joint lock for the ladder connection being expanded to 180°.
  • Figure 5 is a front elevational view of the thick plate joint lock for the ladder connection of the present invention when it is deployed to 36°.
  • Figure 6 is an enlarged view of a portion A in Figure 5.
  • Figure 7 is a rear view of the thick plate joint lock for the ladder connection of the present invention when it is deployed to 36°.
  • Figure 8 is a front elevational view of the thick plate joint lock for the ladder connection of the present invention when it is deployed to 180°.
  • Figure 9 is a ladder for installing a thick plate joint lock for connecting the ladder of the present invention to
  • the utility model provides a thick plate joint lock for connecting ladders.
  • the thick plate joint lock comprises an inner piece 21 and an outer piece 22 superposed on both sides of the inner piece, the inner piece 21 and the outer piece 22 are relatively rotatable, and the thick plate joint lock 20 further comprises a positioning sleeve 23 for locking the inner piece 21 and the outer piece 22, the positioning sleeve 23 has a rotating shaft 24 and a locking pin 25, and the limiting piece 26 is further fixed on the outer piece 22,
  • the inner piece 21 has a groove 27 on which the displacement of the limiting post 26 is restricted.
  • the limiting post 26 is a cylinder, and the bottom surface of the recess 27 is an inwardly concave curved surface, and the outer circumferential surface of the limiting post 26 is tangentially matched with the curved surface of the recess.
  • the radius R of the curved surface of the groove 27 is larger than the radius of the limiting column 26.
  • the depth H of the groove 27 is greater than the radius of the limit post 26.
  • a ladder can be deformed and used as a double-sided step ladder (the expansion angle is 36.) or a long straight ladder (expanded angle of 180°) for its versatile purpose.
  • the ladder 30 with the thick plate joint lock 20 of the present invention is deployed to 180° for the single joint performance test, the ladder is inclined at a certain angle on the vertical wall surface 40, and then one of the thick plate joint locks is made.
  • the angle 30 of the ladder 30 connected by the thick plate type joint lock 20 of the utility model is difficult to exceed 180°, and the bearing performance is greatly improved, so that the ladder is more safe and reliable.

Landscapes

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

Abstract

一种梯具连接用的厚板式关节锁，其包括相对转动连接的内片（21）、外片（22）和将该内片（21）和外片（22）锁定的定位轴套（23）。另外，该外片（22）上设有转限位柱（26），内片（21）上则设有抵挡限位柱（26）的凹槽（27），该限位柱（26）和凹槽（27）限制了内片（21）相对外片（22）的转动，从而提高了梯具的承重能力和安全性。

Description

一种梯具连接用的厚板式关节锁
技术领域
本实用新型涉及一种梯具连接用的结构部件， 尤其是涉及一种用于梯 具连接的厚板式关节锁。 背景技术
20世纪 70年代， 美国人 Hal Wing设计制造了俗称 "小巨人" （Little
Giant) 的伸缩式多用途梯， 经过多年来的发展， "小巨人"梯具已经成为业 内牛耳， 风靡全球。
"小巨人"梯具的关键技术在于其连接上下梯段的连接部件一一厚板 式关节锁。请参阅图 1至图 4， 所述厚板式关节锁 10包括内片 11和叠合在 所述内片两侧的外片 12， 所述内片 11和外片 12能相对转动， 所述厚板式 关节锁 10还包括用于将所述内片 11和所述外片 12锁定定位的定位轴套 13， 所述定位轴套 13上具有转轴 14和锁销 15，所述外片 12上还固设有限位柱 16， 所述限位柱 16在所述内片 11和所述外片 12相对转动的角度为 180° 时与所述内片 11的外圆弧面 110相抵触。 限位柱 16可以增加该厚板式关 节锁 10的承重性能。
通过该定位轴套 13，使得该厚板式关节锁 10的内片 11和外片 12可以 转动至设定角度后锁定， 如通常设定定位轴套 13在内片 11和外片 12展开 角度为 0° 、 36° 和 180° 时锁定。 由于采用上述结构， 将两个所述的厚板 式关节锁 10连接于上下梯段之间后就可以实现使一把梯子被变形用做为双 面踏板梯 （展开角度为 36° ) 或长直梯 （展开角度为 180° )， 达到其多用 途的目的。
当变形为长直梯时， 此时两个所述厚板式关节锁的内片和外片均展开 至 180° ， 在特定情况下， 如按美国和澳洲等国的梯具测试标准要求， 被测 试梯具须在一个厚板式关节锁失效 (锁销 15退出锁销孔)的情况下能够承受 住测试负载。 现有技术中， 当一个厚板式关节锁失效后， 虽然该厚板式关 节锁依靠限位柱 16与外片 12的抵触仍有一定的承重能力， 但因内片上与 限位柱抵触的其承重面为外圆弧面， 限位柱在该外圆弧面会产生一定的移 位， 从而使上下段梯具承重角度超过 180° ， 受力越大， 位移越大， 内片和 外片相对转动的角度也越大， 使得整梯的承重性能降低， 从而使得整梯测 试失败的可能性增加。 在此情形下， 现有技术的解决办法是通过加强厚板 式关节锁的强度或整梯的强度来提高整梯的承重性能， 这样势必会大大增 加整梯的成本。 发明内容
为了克服现有技术的缺陷， 本实用新型的目的是提供一种承重性能更 好、 更加安全可靠的厚板式关节锁。
为达到上述目的， 本实用新型提供一种梯具连接用的厚板式关节锁， 所述厚板式关节锁包括内片和叠合在所述内片两侧的外片， 所述内片和外 片能相对转动， 所述厚板式关节锁还包括用于将所述内片和所述外片锁定 定位的定位轴套， 所述外片上还固设有限位柱， 其特征在于： 所述内片上 具有限制所述限位柱产生位移的凹槽， 在所述内片和所述外片相对转动的 角度为 180° 时所述限位柱部分或全部进入所述凹槽内。
较佳地， 所述限位柱为圆柱， 所述凹槽的底面为向内凹的弧形面， 所 述弧形面与所述限位柱的外周面相切配合。 更佳地， 所述弧形面的半径大 于或者等于所述限位柱的半径。
较佳地， 所述凹槽的深度大于或者等于所述限位柱的半径。
由于采用上述技术方案， 本实用新型提供的一种厚板式关节锁通过在 内片上具有凹槽， 在所述内片和所述外片相对转动的角度为 180° 时， 所述 凹槽可限制所述限位柱产生位移， 从而增强该厚板式关节锁的承重性能， 使其更加安全可靠。 附图说明
图 1为现有技术梯具连接用的厚板式关节锁展开至 36° 时的主视图。 图 2为现有技术梯具连接用的厚板式关节锁展开至 36° 时的后视图。 图 3为现有技术梯具连接用的厚板式关节锁展开至 36° 时的左视图。 图 4为现有技术梯具连接用的厚板式关节锁展开至 180° 时的主视图。 图 5 为本实用新型梯具连接用的厚板式关节锁展开至 36° 时的主视 图。
图 6为图 5中 A部放大图。
图 7 为本实用新型梯具连接用的厚板式关节锁展开至 36° 时的后视 图。
图 8 为本实用新型梯具连接用的厚板式关节锁展开至 180° 时的主视 图。
图 9 为安装了本实用新型梯具连接用的厚板式关节锁的梯具展开至
180° 进行性能测试时的示意图。 具体实施方式
下面结合附图对本实用新型的最佳实施方式进行详细说明。
请参阅图 5 至图 8， 本实用新型提供一种梯具连接用的厚板式关节锁
20， 所述厚板式关节锁包括内片 21和叠合在所述内片两侧的外片 22， 所述 内片 21和外片 22能相对转动， 所述厚板式关节锁 20还包括用于将所述内 片 21和所述外片 22锁定定位的定位轴套 23，所述定位轴套 23上具有转轴 24和锁销 25， 所述外片 22上还固设有限位柱 26， 所述内片 21上具有限制 所述限位柱 26产生位移的凹槽 27。
请参阅图 8在所述内片 21和所述外片 22相对转动的角度为 180° 时所 述限位柱 26全部进入所述凹槽 27内。
于本实施例中， 所述限位柱 26为圆柱， 所述凹槽 27的底面为向内凹 的弧形面， 限位柱 26的外圆周面与所述凹槽的弧形面相切配合， 且所述凹 槽 27的弧形面的半径 R大于所述限位柱 26的半径。所述凹槽 27的深度 H 大于所述限位柱 26的半径。
请参阅图 9，将两个所述的厚板式关节锁 20连接于上梯段 31和下梯段 32之间后就可以实现使一把梯子被变形用做为双面踏板梯（展开角度为 36 。 ) 或长直梯 （展开角度为 180° )， 达到其多用途的目的。 将安装了本实 用新型厚板式关节锁 20的梯具 30展开至 180° 进行单关节性能测试时，将 梯具按一定角度斜架在竖直墙面 40上， 然后使其中一个厚板式关节锁 20 失效 (使锁销 25退出锁孔),此时,失效关节锁因限位柱 26落在凹槽 27内,使 得该失效关节锁仍能有效地协助另一个厚板式关节锁共同承受在被测试梯 具上梯段 31上的悬挂重物 50。
相较于现有技术， 采用本实用新型的厚板式关节锁 20连接的梯具 30 展开角度较难超过 180° ， 承重性能大大提高， 使梯具更加安全可靠。
上述实施例只为说明本实用新型的技术构思及特点， 其目的在于让熟 悉此项技术的人士能够了解本实用新型的内容并据以实施， 并不能以此限 制本实用新型的保护范围， 凡根据本实用新型精神实质所作的等效变化或 修饰， 都应涵盖在本实用新型的保护范围之内。

Claims

权利要求
1. 一种梯具连接用的厚板式关节锁， 所述厚板式关节锁包括相转动连 接的内片和外片， 所述厚板式关节锁还包括用于将所述内片和所述外片锁 定定位的定位轴套， 所述外片上还设有用于限制所述内片的相对转动角度 的限位柱， 其特征在于： 所述内片上具有用于抵挡所述限位柱的凹槽。
2. 根据权利要求 1所述的一种梯具连接用的厚板式关节锁， 其特征在 于： 所述内片和所述外片相对转动展开后所述限位柱进入所述凹槽内。
3. 根据权利要求 1所述的一种梯具连接用的厚板式关节锁， 其特征在 于： 所述限位柱为圆柱， 所述凹槽为向内凹的弧形凹槽。
4. 根据权利要求 3所述的一种梯具连接用的厚板式关节锁： 其特征在 于： 所述弧形凹槽的半径大于或者等于所述限位柱的半径。
5. 根据权利要求 3所述的一种梯具连接用的厚板式关节锁， 其特征在 于： 所述凹槽的深度大于或者等于所述限位柱的半径。
PCT/CN2013/083712 2013-01-18 2013-09-18 一种梯具连接用的厚板式关节锁 WO2014110913A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2013373963A AU2013373963B2 (en) 2013-01-18 2013-09-18 Thick plate type joint lock for ladder connection
US14/380,037 US20150315844A1 (en) 2013-01-18 2013-09-18 Thick plate type joint lock for ladder connection
US15/479,076 US10487580B2 (en) 2013-01-18 2017-04-04 Thick plate type joint lock for ladder connection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2013200266468U CN203081279U (zh) 2013-01-18 2013-01-18 一种梯具连接用的厚板式关节锁
CN201320026646.8 2013-01-18

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US14/380,037 A-371-Of-International US20150315844A1 (en) 2013-01-18 2013-09-18 Thick plate type joint lock for ladder connection
US15/479,076 Continuation US10487580B2 (en) 2013-01-18 2017-04-04 Thick plate type joint lock for ladder connection

Publications (1)

Publication Number Publication Date
WO2014110913A1 true WO2014110913A1 (zh) 2014-07-24

Family

ID=48827130

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/083712 WO2014110913A1 (zh) 2013-01-18 2013-09-18 一种梯具连接用的厚板式关节锁

Country Status (4)

Country Link
US (2) US20150315844A1 (zh)
CN (1) CN203081279U (zh)
AU (1) AU2013373963B2 (zh)
WO (1) WO2014110913A1 (zh)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8225906B2 (en) 2008-08-22 2012-07-24 Core Distribution, Inc. Extendable/retractable ladder
CN203081279U (zh) * 2013-01-18 2013-07-24 苗晓春 一种梯具连接用的厚板式关节锁
US9416591B2 (en) 2014-12-02 2016-08-16 Core Distribution, Inc. Telescoping ladder with stabilizers
US10233692B2 (en) * 2014-12-02 2019-03-19 Core Distribution, Inc. Foldable ladder
US9580959B2 (en) * 2014-12-02 2017-02-28 Core Distribution, Inc. Foldable ladder
CN109154172B (zh) * 2016-06-14 2021-03-09 伟英企业有限公司 梯子、梯子铰链和相关方法
US20180274296A1 (en) * 2017-03-21 2018-09-27 Tricam Industries, Inc. Adjustable hinge for a multi-position ladder
US20240035339A1 (en) * 2017-01-04 2024-02-01 Tricam Industries, Inc. Adjustable hinge for a multi-position ladder
CN107178303A (zh) * 2017-03-03 2017-09-19 厦门新技术集成有限公司 一种可变换直梯使用的人字梯
US10876356B2 (en) * 2017-06-02 2020-12-29 Wing Enterprises, Incorporated Ladder hinge and ladders incorporating same
US20190136624A1 (en) * 2017-11-07 2019-05-09 Wan Yu Chen Mechanical structure
EP3707340B1 (en) 2017-11-08 2021-06-23 Core Distribution Inc. Locking assembly for a telescoping ladder
USD935055S1 (en) * 2019-08-07 2021-11-02 Tricam Industries, Inc. Hinge for a multi-position ladder
US11795760B2 (en) * 2019-10-24 2023-10-24 Core Distribution, Inc. Ladder tripod assembly and system
USD966556S1 (en) 2019-12-13 2022-10-11 Murphy Ladder Llc Ladder
CN216767249U (zh) * 2021-01-25 2022-06-17 江苏宙际杰智能科技股份有限公司 一种多功能梯关节
WO2023230368A1 (en) * 2022-05-27 2023-11-30 Little Giant Ladder Systems, Llc Multifunction button for ladder adjustment
CN115405219B (zh) * 2022-08-24 2024-09-20 苏州飞华铝制工业有限公司 组合梯
CN220512539U (zh) * 2023-08-22 2024-02-23 上海蔻思兰科技有限公司 可折叠沙发扶手及沙发

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3737295A1 (de) * 1987-11-04 1989-05-18 Krause Werk Gmbh & Co Kg Gelenk fuer leitern
US5058239A (en) * 1986-04-14 1991-10-22 Alfa Metal Corp. Fixing knuckles in foldable aluminum ladder
CN1397709A (zh) * 2001-07-13 2003-02-19 朴在渊 用于可折叠式梯子的铰链
DE202006004076U1 (de) * 2006-03-13 2006-06-01 Fischer Ekw Gmbh & Co. Kg Rastgelenk
CN2813867Y (zh) * 2005-08-05 2006-09-06 天津市金锚科技发展有限公司 改进的折叠梯铰链装置
CN201354583Y (zh) * 2008-12-26 2009-12-02 苏州宝富轻工制品有限公司 梯具自动锁扣机构
CN203081279U (zh) * 2013-01-18 2013-07-24 苗晓春 一种梯具连接用的厚板式关节锁

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1205411A (en) 1913-02-03 1916-11-21 Nat Lock Co Desk-fall support.
US1337817A (en) 1919-11-26 1920-04-20 Bode Robert Rudland Hinge for artificial legs
DE1775524C3 (de) 1968-08-23 1978-08-24 Otto 7067 Pluederhausen Mayer Selbsttätig verriegelbares Gelenk
DE2101915C3 (de) 1971-01-15 1982-03-25 Mayer, Otto, 7063 Welzheim Verriegelbares Gelenk
FR2171732A5 (zh) 1972-02-11 1973-09-21 Mayer Otto
CH551560A (de) 1972-04-11 1974-07-15 Kuemmerlin Walter Gelenkbeschlag fuer klappbare leitern.
US4027741A (en) 1976-07-15 1977-06-07 Shakespeare Company Locking hinge mechanism for a stepladder
FR2401356A1 (fr) 1977-08-26 1979-03-23 Salanon Sa Articulation pour structure articulee susceptible d'etre bloquee selectivement dans plusieurs positions angulaires predeterminees
US4157128A (en) 1977-12-22 1979-06-05 Jack Peters Self-locking hinge
US4403373A (en) 1980-02-15 1983-09-13 Kuemmerlin Walter Hinge fitting for foldable ladders
US4407045A (en) 1981-12-21 1983-10-04 Boothe Leland H Ladder hinge and multi-position locking mechanism therefor
US4566150A (en) * 1981-12-21 1986-01-28 Little Giant Industries, Inc. Ladder hinge and multi-position locking mechanism therefor
US4602889A (en) 1984-08-31 1986-07-29 Mu Shan Yeh Adjustable knuckle joint device for folding ladders
KR890003205Y1 (ko) 1986-03-04 1989-05-17 주식회사 우경제작소 절첩식 사다리용 경첩
FR2603673B1 (fr) 1986-09-05 1991-04-26 Rey Henri Element d'articulation pour supports pliants
US4773503A (en) 1987-09-11 1988-09-27 Robert L. Pease Ladder hinge
US5954157A (en) 1994-10-18 1999-09-21 Fiberlite Technologies, Inc. Fiber/resin composite ladder and accompanying accessories
AU1405397A (en) 1997-01-21 1998-08-07 Shu Jin Jeremy Ong Multi-plates, multi-positions, self-locking, self-unlocking rotating hinge
US6353970B1 (en) 1999-11-10 2002-03-12 Estran Corporation Foldable seat hinge
US6397433B1 (en) 2000-04-03 2002-06-04 Shih-Ching Chen Knuckle assembly
EP1182322B1 (en) 2000-08-14 2006-11-15 Tom Yeh Hinge on ladder
US6711780B2 (en) 2001-08-22 2004-03-30 Sinclair Worldwide, Inc. Hinge for collapsible ladders
KR100458926B1 (ko) * 2002-01-26 2004-12-03 주식회사 매직캔 절첩사다리용 힌지
US7424933B2 (en) 2002-05-28 2008-09-16 Norman Miller Ladder assemblies
KR200317046Y1 (ko) 2003-02-19 2003-06-25 이상규 접철식 사다리용 힌지장치
US20040216277A1 (en) 2003-05-01 2004-11-04 Jeffrey Beaver Hinge and locking assembly for center-folding ladder
US7140072B2 (en) 2003-11-11 2006-11-28 Cosco Management, Inc. Lockable ladder hinge
KR200349726Y1 (ko) 2004-01-29 2004-05-12 주식회사 봉천 접철식 사다리용 힌지장치에 사용되는 안전부재
US7100739B2 (en) 2004-05-14 2006-09-05 Werner Co. Step stool, hinge and method
US7093321B2 (en) 2004-06-07 2006-08-22 Cosco Management, Inc. Lockable hinge
US7984531B2 (en) 2005-09-23 2011-07-26 Restorative Care Of America Incorporated Rachet hinge for a knee or elbow orthosis
GB2467529B (en) * 2009-01-30 2013-03-06 Hughes Safety Showers Ltd Frame for a shelter
US8381873B2 (en) 2009-07-28 2013-02-26 Affinity Tool Works Ladder and support stand
US8123298B2 (en) * 2009-09-10 2012-02-28 Friend Success, Inc. Hinge assembly for boat seat
US8591444B2 (en) 2010-06-25 2013-11-26 Djo, Llc Hinge for an orthopedic brace
US8550559B2 (en) 2010-11-24 2013-10-08 Everett Sollars Power disc style seat recliner

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058239A (en) * 1986-04-14 1991-10-22 Alfa Metal Corp. Fixing knuckles in foldable aluminum ladder
DE3737295A1 (de) * 1987-11-04 1989-05-18 Krause Werk Gmbh & Co Kg Gelenk fuer leitern
CN1397709A (zh) * 2001-07-13 2003-02-19 朴在渊 用于可折叠式梯子的铰链
CN2813867Y (zh) * 2005-08-05 2006-09-06 天津市金锚科技发展有限公司 改进的折叠梯铰链装置
DE202006004076U1 (de) * 2006-03-13 2006-06-01 Fischer Ekw Gmbh & Co. Kg Rastgelenk
CN201354583Y (zh) * 2008-12-26 2009-12-02 苏州宝富轻工制品有限公司 梯具自动锁扣机构
CN203081279U (zh) * 2013-01-18 2013-07-24 苗晓春 一种梯具连接用的厚板式关节锁

Also Published As

Publication number Publication date
CN203081279U (zh) 2013-07-24
AU2013373963B2 (en) 2016-01-07
US20170204663A1 (en) 2017-07-20
US20150315844A1 (en) 2015-11-05
US10487580B2 (en) 2019-11-26
AU2013373963A1 (en) 2014-08-28

Similar Documents

Publication Publication Date Title
WO2014110913A1 (zh) 一种梯具连接用的厚板式关节锁
TWI666369B (zh) 基於破壞後自動鎖死之鎖心結構
CN220814904U (zh) 一种钢骨混凝土柱与混凝土梁连接辅助装置
CN106115511A (zh) 一种施工电梯附着与塔吊的连接装置
CN202732585U (zh) 一种折叠床底框架中心连接杆的锁定结构
CN103670024B (zh) 锁芯及锁
CN102392570A (zh) 一种防坠落玻璃幕墙翻窗转动机构
CN206280332U (zh) 一种钩子锁组件
CN203450083U (zh) 汽车踏板锁的踏板盖结构
CN202249225U (zh) 榫接结构锁芯
CN213741982U (zh) 一种钢结构楼梯
CN105064796A (zh) 一种防盗后把锁的锁定器
CN209509684U (zh) 便捷型执手
CN101899901A (zh) 钢管扣件止滑结构
CN201756790U (zh) 钢管扣件止滑结构
TWI847795B (zh) 摺疊鎖之摺疊板樞接結構
CN206231526U (zh) 一种滑板车及其安全锁
CN102109086A (zh) 折叠式结构体快速枢转固定装置
CN206844829U (zh) 可调节式门锁结构
CN217233303U (zh) 一种重力式自关安全门
CN203078476U (zh) 设有转角限位机构的折叠式汽车方向盘锁
CN211851363U (zh) 一种防止意外上锁的防盗锁块
CN218998252U (zh) 一种头戴式耳机折叠结构
CN102381280B (zh) 一种汽车方向盘锁
CN209025254U (zh) 复合保温结构及建筑墙体

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 14380037

Country of ref document: US

ENP Entry into the national phase

Ref document number: 2013373963

Country of ref document: AU

Date of ref document: 20130918

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13872231

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13872231

Country of ref document: EP

Kind code of ref document: A1