EP0090198A2 - Echelle pliante à plusieurs usages - Google Patents

Echelle pliante à plusieurs usages Download PDF

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Publication number
EP0090198A2
EP0090198A2 EP83102168A EP83102168A EP0090198A2 EP 0090198 A2 EP0090198 A2 EP 0090198A2 EP 83102168 A EP83102168 A EP 83102168A EP 83102168 A EP83102168 A EP 83102168A EP 0090198 A2 EP0090198 A2 EP 0090198A2
Authority
EP
European Patent Office
Prior art keywords
joint part
joint
recess
width
bolt
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.)
Granted
Application number
EP83102168A
Other languages
German (de)
English (en)
Other versions
EP0090198B1 (fr
EP0090198A3 (en
Inventor
Günther Krause
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
Application filed by Individual filed Critical Individual
Priority to AT83102168T priority Critical patent/ATE19538T1/de
Publication of EP0090198A2 publication Critical patent/EP0090198A2/fr
Publication of EP0090198A3 publication Critical patent/EP0090198A3/de
Application granted granted Critical
Publication of EP0090198B1 publication Critical patent/EP0090198B1/fr
Expired legal-status Critical Current

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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 a collapsible multi-purpose ladder, the bars of which are connected by joints arranged in pairs and lockable in several working positions, each of which has two joint parts which can be pivoted about a common joint axis, of which the first joint part has a double-shell locking disk which is concentric with the joint axis and which is in the region of its Has circumferentially distributed grooves corresponding to the working positions, into which a spring-loaded locking piece can engage, which is guided in a longitudinally displaceable manner on the second joint part which overlaps the first joint part and which can be lifted out of the respective recess of the locking disk by a release lever pivotably mounted on the second joint part and connected to an actuating lever and the L ösungshebel of the two spars associated joints are connected together by a rod.
  • a multi-purpose ladder is known from DE-OS 27 54 755.
  • the connecting rod is guided inside a spar, with the release lever being actuated with rotary handles arranged on the sides of the spars.
  • This known joint arrangement is structurally complex to manufacture and susceptible to failure during operation.
  • the invention has for its object to form a collapsible multi-purpose ladder of the type mentioned in such a way that its joints are structurally simple in construction and the ladder is easy to use.
  • the locking piece consists of a rectangular bolt, the height of which is approximately equal to the width of the second hinge part and is guided in a recess in the side walls of the second hinge part and of an adjoining guide part, the height of which is only is slightly less than the clear height of the second hinge part, the width of which is, however, greater than the width of the recess and of a guide part for the spring, that the recess is wider than the width of the bolt, and a storage surface for this, which forms the bolt holds in its disengaged position and that the locking washer having the grooves each has in the same direction an adjacent to the grooves approach, which forms a stop surface for the bolt of the locking piece.
  • a joint designed according to the invention for a collapsible multi-purpose ladder thus consists of only a few parts, the locking piece being designed such that it is guided both in the lateral direction and in the vertical direction.
  • Lateral guidance is provided by the bolt, which has the same height as the second joint part and is guided in the same recess. The guidance is obtained here through the side walls in the second joint part. This recess has a widening, so that thereby a storage surface for the end face of the bolt is obtained.
  • the rod connecting the two release levers is arranged laterally next to the rungs, which are adjacent to the joints. This has the advantage for the operator that the ladder can be held and the release mechanism can be actuated with one and the same handle, which greatly simplifies handling.
  • the extended position of the spars is also secured by locking the locking piece in a correspondingly arranged groove. This ensures that the spars can also be spaced from each other in this position, so that serious injuries, such as have previously occurred and which have even resulted in fingers being squeezed, can no longer occur.
  • a hinge 1 of a collapsible multi-purpose ladder which connects the bars 2, 3 of the multi-purpose ladder with each other.
  • the joint consists of a first joint part, which is shown in FIGS. 5 to 7.
  • the first joint part 4 is composed of two halves 5, 6, each of which is deep-drawn from a metal sheet and which consist of a guide part 7 which has an outer contour which corresponds to the clear inner contour of the spar 2, 3. With this guide part 7, the first joint part is inserted into the spar 2, as shown in Fig. 1.
  • the spar 2 and the guide part 7 are fastened with the aid of rivets 8.
  • a locking disk 9 is formed in one piece on the guide part 7 and is narrower than the guide part 7.
  • the locking disk 9 has a plurality of grooves 10 arranged at a certain angular distance are so that the spars can be fixed in a 90 °, a 135 ° and a 180 ° position to each other.
  • Lugs 11 are formed on each side of the grooves 10 of the locking disk 9, each forming a stop surface 12. These lugs are each formed on the same side of the grooves, so that, as will be explained later, they only interact in one direction of rotation with a locking piece 19 which effects the locking.
  • the locking disk 9 has in its center a bore 13 for receiving the hinge axis 14. In the area of the bore 13, the wall of the locking disk 9 is retracted again, so that this results in better guidance for the second joint part 15, which is shown in detail in FIGS. 2 to 4.
  • the second joint part 15 like the first joint part 4, has a guide part 16 which is inserted into the spar 3 and fastened in it by means of rivets 8.
  • a tab 17 is formed in the guide part and inwards turned. This tab has a bore 18 which serves to guide the locking piece 19.
  • the guide part 19 also has a further recess 20 on both opposite sides, which forms a storage surface 21.
  • This storage surface is, as can be seen from Fig. 1, arranged relative to the grooves lO such that it lies above the upper boundary of the groove, which is opposite the nose 11, but below the stop surface 12 of the nose 11, so that in the a direction of movement, the stop surface 12 cooperates with the bolt 22 of the locking piece 19.
  • the second joint part 15 also has a bore 23 for the joint axis 14. Furthermore, as can be seen from FIG. 4, this is drawn in in the region of the bore 23, so that this results in a guide surface with the retraction of the locking disk 9 in the region of the bore 13, which in addition to the joint axis 14 also centers the two joint parts he brings.
  • the second joint part 15 also has a bore 3.4 through which the axis of the release lever 24 shown in FIGS. 9 to 12 is guided.
  • the locking piece 19 is shown.
  • the locking piece consists of a bolt 22 which engages in the grooves 10 of the locking disk 9.
  • a guide part 25 and a rod 26, which serves as a guide for a compression spring 27, are integrally formed on the bolt 10.
  • the width of the latch 22 is slightly less than that of the grooves 10, whereas the height of the latch 22 is equal to or slightly less than the height of the guide part 16 of the second joint part 15.
  • the lateral guidance of the bolt 22 is by the side walls 28 of the guide member 16th of the second joint part 15 obtained.
  • the adjoining the latch 22 guide member 25 has a lower height, namely this height is at least twice the wall thickness of the side walls 28, so that this guide member 25 comes to rest on the inner walls of the side walls 28 .
  • the width of the guide part 25, however, is substantially larger than that of the bolt 10, so that the locking piece 19 is supported in the region of the recess 20.
  • the rod 26 is, as can be seen from FIG. 1, inserted through the bore 18 of the tab 17. Between the tab 17 and the guide part 25, a compression spring 27 is arranged, which presses the bolt 22 in the direction of the grooves 10.
  • the release lever 24 is provided with two arms 29 which are connected to one another via a web 30.
  • two tabs 31 are arranged laterally, which are bent over the web, so that a small gap 32 remains between these tabs.
  • the arms 29 have two bores 33 which have somewhat deep-drawn walls for better guidance of the axis 34 which actuates the release lever.
  • This axis has in the region of the release lever 24 lateral projections which engage in the gap 32, so that a rotationally fixed connection of the axis to the release lever is achieved.
  • a rod 35 is connected to the axis 34, which is essentially U-shaped and connects the two axes 34 of two joints 1 arranged in parallel. This rod is shown in FIG. 13 and is guided laterally in the area of a rung 39 so that it lies outside the step area.
  • the operation of the joint is as follows.
  • the release lever 24 moves downward and presses with its contact surface 37 against the bolt 22 of the locking piece 19 and pushes it out of the groove 10.
  • the locking piece and thus the bolt 22 is also displaced in the direction of the axis of rotation of the lever, so that the locking piece comes to rest on the storage surface 21.
  • the lever can then be released and the joint rotated. If this rotation occurs clockwise in FIG. 1, the spar 2 can be brought into a position parallel to that of the spar 3 without fear of the latch 22 latching into one of the grooves 10. If, on the other hand, the spar 2 is rotated counterclockwise in FIG. 1, the stop surface 12 of the nose 11 comes against the bolt 22 and pushes it away from its storage surface 21, so that it now snaps into the groove 10 due to the force of the spring 27 and so the mobility of the spars 2, 3 blocks against each other.
  • a joint according to the invention is characterized by a simple structure with high operational reliability and simple operation.
  • the locking mechanism consists of a spring and a locking piece which is guided in the second joint part and can be actuated by a simply designed lever, the release levers of the joints assigned in pairs being actuated simultaneously, so that only one triggering operation is required for this.
  • the rod 35 which is connected to the axis 34 for the release lever, is arranged in the area of a rung 39, the folding or folding of the ladder and the actuation of the release lever can take place practically simultaneously, which makes operation considerably easier .

Landscapes

  • Ladders (AREA)
  • Table Devices Or Equipment (AREA)
EP83102168A 1982-03-26 1983-03-05 Echelle pliante à plusieurs usages Expired EP0090198B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83102168T ATE19538T1 (de) 1982-03-26 1983-03-05 Zusammenklappbare mehrzweckleiter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3211164 1982-03-26
DE3211164A DE3211164C2 (de) 1982-03-26 1982-03-26 Zusammenklappbare Mehrzweckleiter

Publications (3)

Publication Number Publication Date
EP0090198A2 true EP0090198A2 (fr) 1983-10-05
EP0090198A3 EP0090198A3 (en) 1984-07-18
EP0090198B1 EP0090198B1 (fr) 1986-04-30

Family

ID=6159378

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83102168A Expired EP0090198B1 (fr) 1982-03-26 1983-03-05 Echelle pliante à plusieurs usages

Country Status (4)

Country Link
US (1) US4474264A (fr)
EP (1) EP0090198B1 (fr)
AT (1) ATE19538T1 (fr)
DE (2) DE3211164C2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928792A (en) * 1987-11-04 1990-05-29 Krause Werk Gmbh & Co. Kg Joint for ladders
CN109505506A (zh) * 2018-12-28 2019-03-22 彭东丽 一种电力专用绝缘梯

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602889A (en) * 1984-08-31 1986-07-29 Mu Shan Yeh Adjustable knuckle joint device for folding ladders
DE3446255A1 (de) * 1984-12-19 1986-06-19 Nikolaus Adalbert 7730 Villingen-Schwenningen Kümmerlin Leiter
US4645371A (en) * 1986-05-01 1987-02-24 Wang Chien Yuan Safety joint mechanism, particularly for folding ladders
KR910000302Y1 (ko) * 1987-02-21 1991-01-18 장문수 절첩식 사다리용 경첩
US4773503A (en) * 1987-09-11 1988-09-27 Robert L. Pease Ladder hinge
US4805737A (en) * 1987-11-18 1989-02-21 Peng Ching L Ladder positioning mechanism
US4934485A (en) * 1988-02-08 1990-06-19 Robert Pease Combination ladder and hand truck
US4934696A (en) * 1988-11-07 1990-06-19 Richard Jackan Retractable basketball backboard
DE3937535C1 (en) * 1989-11-10 1991-03-07 Rauschenberger Metallwaren Gmbh, 7144 Asperg, De Joint for folding ladder - has swivel legs with ratchet disc and stop to control pivoting
US5022118A (en) * 1990-06-25 1991-06-11 Wan Dean Industry Co. Ladder joint with engagement spring member
US5279387A (en) * 1991-09-25 1994-01-18 Emerson Electric Co. Articulated ladder assembly
US5169257A (en) * 1992-06-26 1992-12-08 Liou Shuen Yi Angle adjustable joint
US5954157A (en) * 1994-10-18 1999-09-21 Fiberlite Technologies, Inc. Fiber/resin composite ladder and accompanying accessories
DE19901126A1 (de) 1999-01-14 2000-07-20 Rauschenberger Gmbh U Co Mehrzweckleiter mit zusammenklappbaren Holmen
DE19901125C1 (de) * 1999-01-14 2000-11-16 Rauschenberger Gmbh U Co Gelenk, insbesondere zur Verbindung von Leiterholmen
US6443261B1 (en) * 1999-08-13 2002-09-03 Cosco Management, Inc. Step stool
DE29919002U1 (de) 1999-10-29 2000-02-03 Krause-Werk GmbH & Co KG, 36304 Alsfeld Leitergelenk
DE29919004U1 (de) 1999-10-29 2000-02-03 Krause-Werk GmbH & Co KG, 36304 Alsfeld Leitergelenk
WO2004044365A2 (fr) 2002-11-11 2004-05-27 Wing Enterprises Echelles transformables, composants d'echelle et leurs procedes de fabrication
US6877586B2 (en) * 2003-04-11 2005-04-12 Sylmark Holdings Limited Hinge system for combination hand truck, step ladder and dolly device
US6880835B2 (en) * 2003-04-11 2005-04-19 Sylmark Holdings Limited Combination hand truck, step ladder and dolly
US6991063B2 (en) * 2003-08-07 2006-01-31 Werner Co. Stowable ladder configured for installation in an opening
US7341392B2 (en) * 2005-04-22 2008-03-11 Dofair Co., Ltd. Lock device in an articulated joint for a foldable ladder
KR100662454B1 (ko) * 2005-07-29 2007-01-02 엘지전자 주식회사 평판형 영상표시기를 위한 스탠드 구조
USD553757S1 (en) 2006-02-11 2007-10-23 Wing Enterprises, Inc. Ladder hinge pair
US20070227819A1 (en) * 2006-03-28 2007-10-04 Layfield L D Window cleaning ladder
US20080073150A1 (en) * 2006-09-27 2008-03-27 Lin Fan Nan Safety Reinforcing Structure for Aluminum Ladder Hinge
US8341889B2 (en) * 2008-09-19 2013-01-01 Hy-Security Gate, Inc. Coupling apparatus for barrier assemblies and related methods
USD630492S1 (en) * 2009-09-18 2011-01-11 Hy-Security Gate, Inc. Hinge a cover
US20120061182A1 (en) * 2010-09-09 2012-03-15 Grimes Ronald R Multi-Positional Articulating Hinge with Internal Stops and Remote Actuation and Methods for Manufacturing the Same
US20150259981A1 (en) * 2014-03-14 2015-09-17 Zdzislaw Bobek Ladder Guard
US10801261B2 (en) * 2016-06-14 2020-10-13 Wing Enterprises, Incorporated Ladders, ladder hinges and related methods
USD860476S1 (en) * 2017-01-04 2019-09-17 Tricam Industries, Inc. Hinge for a multi-position ladder
USD833643S1 (en) 2017-07-07 2018-11-13 Tricam Industries, Inc. Integrated ladder tray hook
ES2948007T3 (es) * 2017-07-20 2023-08-25 Kidkraft Inc Estructura de juego plegable en acordeón con dispositivo de fácil montaje
US10723077B2 (en) * 2018-12-27 2020-07-28 Bulent Besim System to enable folding in an additive manufacturing machine
USD935055S1 (en) 2019-08-07 2021-11-02 Tricam Industries, Inc. Hinge for a multi-position ladder
US11293481B2 (en) * 2020-07-21 2022-04-05 Way-Hong Chen Rotation joint structure with two-stage lock
CN114517807A (zh) * 2022-03-23 2022-05-20 天津市金锚家居用品有限公司 一种改进的铰链开锁机构
CN223330494U (zh) * 2024-10-08 2025-09-12 傅迪 一种结构稳定的梯子关节

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US764310A (en) * 1904-03-16 1904-07-05 Wallace F Shaw Window-stop.
US1532322A (en) * 1923-06-02 1925-04-07 Lane James Henry Door catch
GB1323741A (en) * 1969-07-30 1973-07-18 Hoffmann H Hoffmann W Ladder
DE2052584C3 (de) * 1970-10-27 1984-09-27 Hoffmann, Helmut Zusammenklappbare Mehrzweckleiter
DE2508573A1 (de) * 1975-02-27 1976-09-09 Bahmueller Masch W Insbesondere an den leiterholmen einer zusammenklappbaren mehrzweckleiter zu befestigendes, in mehreren stellungen verriegelbares gelenk
DE2514940C2 (de) * 1975-04-05 1985-03-07 Wilhelm Bahmüller Maschinen- und Apparatebau, 7067 Plüderhausen In mehreren Arbeitsstellungen verriegelbares Gelenk zur Verbindung der Leiterholme einer in mehreren Stellungen verrastbaren Leiter oder dergl.
DE2754755C2 (de) * 1977-12-08 1986-10-02 Wilhelm Bahmüller, Maschinenbau Präzisionswerkzeuge GmbH, 7067 Plüderhausen Zusammenklappbare Mehrzweckleiter
DE2914476A1 (de) * 1979-04-10 1980-10-23 Bahmueller Masch W Zusammenklappbare mehrzweckleiter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928792A (en) * 1987-11-04 1990-05-29 Krause Werk Gmbh & Co. Kg Joint for ladders
CN109505506A (zh) * 2018-12-28 2019-03-22 彭东丽 一种电力专用绝缘梯

Also Published As

Publication number Publication date
EP0090198B1 (fr) 1986-04-30
DE3363251D1 (en) 1986-06-05
US4474264A (en) 1984-10-02
EP0090198A3 (en) 1984-07-18
DE3211164A1 (de) 1983-10-13
DE3211164C2 (de) 1985-06-20
ATE19538T1 (de) 1986-05-15

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