EP1451434A1 - Echelle pliante - Google Patents

Echelle pliante

Info

Publication number
EP1451434A1
EP1451434A1 EP02775641A EP02775641A EP1451434A1 EP 1451434 A1 EP1451434 A1 EP 1451434A1 EP 02775641 A EP02775641 A EP 02775641A EP 02775641 A EP02775641 A EP 02775641A EP 1451434 A1 EP1451434 A1 EP 1451434A1
Authority
EP
European Patent Office
Prior art keywords
ladder
stile
stiles
hingingly
collapsible
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.)
Withdrawn
Application number
EP02775641A
Other languages
German (de)
English (en)
Inventor
Kenneth Söder
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.)
Scania CV AB
Original Assignee
Scania CV AB
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 Scania CV AB filed Critical Scania CV AB
Publication of EP1451434A1 publication Critical patent/EP1451434A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/32—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
    • B60P3/36—Auxiliary arrangements; Arrangements of living accommodation; Details
    • B60P3/38—Sleeping arrangements, e.g. living or sleeping accommodation on the roof of the vehicle
    • 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
    • E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
    • E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
    • E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
    • E06C9/08—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members
    • E06C9/085—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members ladders unfolded in the direction of the longitudinal members

Definitions

  • the present invention relates to a collapsible ladder adapted to be attached to an external structure.
  • Collapsible ladders are appropriate in applications where it is desired to store a ladder in such a way that it occupies the least possible amount of space when not in use.
  • CH A5 652797 refers to a collapsible ladder intended to be fastened to a building or scaffolding.
  • That ladder comprises a first stile intended to be attached firmly to the building or scaffolding by means of brackets, a second stile arranged for movement with respect to said first stile, and a number of rungs each fastened hingingly to both stiles.
  • the ladder When the ladder is in its retracted position, the stiles fit into one another with their U-shaped cross-sections placed against one another so that the flanges of the U-sections extend across one another.
  • a locking arrangement is provided to hold the ladder in its retracted position in order to prevent unauthorised used of the ladder. When the locking arrangement is released, the force of gravity makes the movable stile drop always to a vertical position and each rung change from the original nearly vertical to a final horizontal position of use.
  • the problem of the ladder only being storable in a vertical position and the problem of one of the stiles not being movable are solved according to the invention by arranging a collapsible ladder which comprises a first stile attached hingingly to an external structure, a second stile arranged substantially parallel to the first stile and likewise attached hingingly to an external structure, and at least one rung attached hingingly to each of the stiles.
  • the collapsible ladder according to claim 1 affords the advantage that the collapsible ladder can be stored in a non- vertical position and the advantage that both stiles are movable. It also solves the problem of achieving a more spatially controlled extension and retraction of a ladder which has both stiles hinged, making it easier, for example, to optimise the surroundings of the ladder without risk of the ladder striking anything in its surroundings.
  • the ladder will be very robust in the extended state because of its torsional rigidity due to the rounded cross-section of the parts of the ladder, and it can therefore be made of parts of smaller dimensions than previously used
  • the ladder is inexpensive to make, since it is made of extruded aluminium without welds or other joints, the ladder is comfortable to climb in the extended state without shoes on the feet, because of its rounded rungs, space is also saved in the ladder's extended position because, for example, space is gained for a refrigerator below the shorter stile, the ladder is very compact in the retracted state, and the ladder can be integrated in a truck bunk and thus be completely out of the way when not in use.
  • Figure 1 depicts schematically a collapsible ladder according to first embodiment of the invention in the fully extended position of use, as seen from in front,
  • Figure 2 depicts schematically a collapsible ladder according to Figure 1 in a partly extended position, as seen from in front,
  • Figure 3 depicts schematically a collapsible ladder according to Figure 1 in the fully retracted storage position, as seen from above,
  • Figure 4 depicts schematically a cross-section JN-IN from Fig. 3 of a collapsible ladder in the fully retracted storage position
  • Figure 5 depicts schematically in perspective view a retraction mechanism of a collapsible ladder according to a preferred first embodiment of the invention
  • Figure 6 depicts schematically a collapsible ladder according to a second embodiment of the invention in the fully extended position of use, as seen from in front.
  • Figure 1 depicts a collapsible ladder 2 according to a first embodiment of the invention in the fully extended position of use, as seen from in front.
  • the collapsible ladder 2 comprises a first stile 4 (shown in the diagram as the left stile), a second stile 6 (shown in the diagram as the right stile) arranged substantially parallel to the first stile, and three rungs 8,10,12 hingingly connected at 9,11 to each of the stiles 4,6. It is also possible to use fewer than three rungs, provided that at least one rung is used.
  • the two stiles 4,6 are hingingly attached at 18,20 to an external structure.
  • the external structure may be a bunk 14 in a truck cab but is preferably a sliderail 16 attached to a bunk 14 in a truck cab.
  • the sliderail 16 may be attached immovably or movably to the bunk 14. In this way the stiles 4,6 will be attached hingingly at 18,20 directly to an external structure 16.
  • Having the sliderail 16 attached movably to the bunk 14 makes it possible for the sliderail 16, and hence the retracted ladder 2, to be insertable in a recess of the bunk 14 in its retracted storage position whereby the ladder 2 can be completely out of the way when not in use.
  • the recess may be provided in the underpart of the bunk and be adapted so that the ladder in the retracted position does not protrude downwards from the surface of the underpart.
  • the stiles 4,6 are attached hingingly to the external structure 16 and are also connected to one another via the three rungs 8,10,12 in such a way that the ladder 2 can be retracted by moving the stiles 4,6 towards one another, which means that the ladder 2 is at least pivotable in such a way as to alter the relative position of the first stile 4 with respect to the second stile 6. It is also possible to arrange the hinged connections 18,20 to the external structure 16 in such a way that the ladder 2 can be pivoted in other directions, e.g. in a direction perpendicular to the longitudinal axes of both the stiles 4,6 and the rungs 8, 10, 12 without altering the relative position of the first stile 4 with respect to the second stile 6.
  • the stiles 4,6 may be attached hingingly to an external structure at any appropriate point desired which makes the aforesaid retraction movement of the stiles 4,6 possible, i.e. which enables them to be moved towards one another, but they are preferably attached hingingly at 18,20 to an external structure 16 by their upper ends.
  • the stiles 4,6 are preferably connected hingingly at 18,20 directly to an external structure 16. It is also possible for the stiles to be attached hingingly to an external structure via an intermediate element which will be described in more detail below.
  • the external structure may, for example, be a sliderail 16. In that case the two stiles 4,6 are attached movably to the sliderail 16, which means that the fastening points 18,20 for the stiles 4,6 on the external structure 16 are movable, and preferably movable steplessly. It is also conceivable to make the attachment of the stiles 4,6 movable or relocatable in a number of steps, e.g. by having on the bunk 14 several fasteners between which the stiles 4,6 can be moved step by step.
  • the at least one rung 8,10,12 is substantially perpendicular to the stiles 4,6 when the ladder 2 is in its extended position of use.
  • the first stile 4 still extends down from the bunk 14 to the cab floor 22.
  • the second stile 6 is shorter than the first stile 4 and still extends down from the bunk 14 towards the cab floor 22 but without reaching the floor 22. In this way, space is also saved when the ladder 2 is in its extended position of use, since it is possible, for example, for a refrigerator to be situated in the space thus freed in the truck cab. It is nevertheless possible to arrange the second stile 6 in the same manner, and for it to be of the same length, as the first stile 4 if this saving of space is not necessary.
  • Figure 2 depicts a collapsible ladder 2 according to Figure 1 in a partly extended position, as seen from in front.
  • the ladder 2 is retracted by pivoting the stiles 4,6 relative to the sliderail 16 and hence moving the stiles 4,6 towards one another.
  • the stiles 4,6 are preferably movably fastened at 18,20 to the sliderail 16 by their upper ends, the fastening points 18,20 for the stiles 4,6 on the sliderail 16 can move sideways (to the left in the case of Figure 1) at the same time as the ladder 2 is retracted.
  • the ladder 2 can thus be retracted by taking hold of, for example, a stile 4 and moving it substantially straight up so that the ladder 2 retracts while said fastening points 18,20 move sideways.
  • FIG. 1 depicts schematically a collapsible ladder 2 according to Figure 1 in the fully retracted storage position, as seen from above.
  • the ladder 2 is provided with a locking arrangement 24 whereby the ladder 2 can be locked firmly in its retracted storage position.
  • the locking arrangement takes the form of a spring-loaded snaplock whereby two lock prongs automatically spring in and then out, thus locking the ladder when the ladder is pushed up against the bunk.
  • the ladder is released by pulling a handle on the locking arrangement so that the locking prongs are drawn in and the ladder released.
  • Other types of locking arrangement are also conceivable, e.g. a simple hasp.
  • Figure 4 depicts a cross-section IV-IV from Fig. 3 of a collapsible ladder 2 in the fully retracted storage position.
  • the stiles 4,6 and the rungs 8,10,12 may have a U-shaped cross-section, but according to the preferred embodiment the first stile 4 is tubular and has an outer first diameter, the at least one rung 8,10,12 takes the form of a tube cut lengthways along the middle and has an inner second diameter and an outer third diameter and the second stile 6 takes the form of a tube cut lengthways along the middle and has an inner fourth diameter, whereby the second diameter is larger than the first diameter but smaller than the third diameter, and the fourth diameter is larger than the third diameter.
  • the stiles 4,6 and the rungs 8,10,12 fit into one another with their cross-sections placed against one another as above when the ladder 2 is retracted, which means that the ladder 2 is very compact in the retracted position.
  • Figure 5 depicts schematically in perspective view a retraction mechanism of a collapsible ladder 2 according to a first preferred embodiment.
  • the first stile 4 and the second stile 6 are respectively arranged for movement in a conventional manner on the sliderail 16 (not depicted) via four slide elements 26,28,30,32 arranged on the stiles.
  • a control rod 34 is arranged hingingly but not movably via its one end 36 on the first stile 4 and hingingly but not movably via its other end 38 on the sliderail 16.
  • the control rod 34 will thus control the sideways movement of the ladder 2 along the sliderail 16.
  • the locking arrangement 24 opens, the ladder 2 extends downwards automatically under the influence of gravity with a gentle and retarded movement due to the ladder 2 being provided with a gas damper 40 arranged between the stiles 4,6.
  • Figure 6 depicts schematically a collapsible ladder 2 according to another embodiment of the invention in the fully extended position of use, as seen from above.
  • the stiles are preferably attached hingingly directly to an external structure.
  • the stiles 4,6 are attached hingingly at 44 to an external structure 16 via an intermediate element 42 such as, for example, a further rung 42 attached hingingly at 9,11 to the stiles 4,6 in the same way as the other rungs 8,10,12, but situated, for example, at the upper ends of the stiles 4,6.
  • This rung 42 is then itself attached to an external structure 16 at a fastening point 44.
  • the external structure may be a bunk 14 in a truck cab, but is preferably a sliderail 16 attached to a bunk 14 in a truck cab.
  • the sliderail 16 may be attached immovably or movably to the bunk 14. In this way the stiles 4,6 will be attached hingingly at 9,11,44 indirectly to an external structure 16. Having the sliderail 16 attached movably to the bunk 14 means that the ladder 2 can be made insertable into the bunk 14 in its retracted storage position, thereby putting the ladder 2 completely out of the way when not in use.
  • the ladder may be fitted in association with a bunk in a truck cab.
  • a ladder according to the invention it is possible to arrange a ladder according to the invention in all applications where it is desired to store a ladder in such a way that it occupies the least amount of space and is not in the way when not in use. Examples include on the outside of the cab wall of a truck, on a boat, on a house, on a loading bay and on a household bunk bed.

Abstract

L'invention concerne une échelle pliante (2) comprenant un premier montant (4), un deuxième montant sensiblement parallèle au premier montant (4), et au moins un barreau (8, 10, 12) articulé (en 9, 11) à chaque montant (4, 6). Les deux montants (4, 6) sont articulés (à 18, 20) au niveau de chaque point de fixation (18, 20) à un rail coulisse (16) de manière à pouvoir se déplacer en continu. barre de commande (34) est articulée, par une extrémité (36), de manière non mobile au premier montant (4) et par son autre extrémité (38) de manière non mobile au rail coulisse (16).
EP02775641A 2001-11-14 2002-10-04 Echelle pliante Withdrawn EP1451434A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0103786A SE522451C2 (sv) 2001-11-14 2001-11-14 Hopfällbar stege
SE0103786 2001-11-14
PCT/SE2002/001812 WO2003042484A1 (fr) 2001-11-14 2002-10-04 Echelle pliante

Publications (1)

Publication Number Publication Date
EP1451434A1 true EP1451434A1 (fr) 2004-09-01

Family

ID=20285977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02775641A Withdrawn EP1451434A1 (fr) 2001-11-14 2002-10-04 Echelle pliante

Country Status (4)

Country Link
EP (1) EP1451434A1 (fr)
JP (1) JP2005509768A (fr)
SE (1) SE522451C2 (fr)
WO (1) WO2003042484A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20051506A1 (it) * 2005-08-01 2007-02-02 Iveco Spa Scaletta estraibile da un lettino superiore di una cabina veicolo speciamente veicolo industriale o commerciale e cabina veicolo dotata di detta scaletta estraibile
DE202006005723U1 (de) * 2006-04-07 2006-08-10 Hymer Ag Hochbettleiter für Fahrzeuge
DE202006005724U1 (de) * 2006-04-07 2006-08-10 Hymer Ag Hochbettleiter für Fahrzeuge
KR101377276B1 (ko) * 2007-01-30 2014-03-25 이베코 에스.피.에이. 운전자의 승차실, 특히 산업용 또는 상업용 자동차의승차실 안의 상부 베드로부터 취출가능한 사다리, 및 상기취출가능한 사다리가 장착된 운전자의 승차실
NL2000524C2 (nl) * 2007-03-06 2008-09-09 Nepro B V Zwenkbare framestructuur voor een zwembadbassin.
JP5141413B2 (ja) * 2008-07-17 2013-02-13 トヨタ車体株式会社 車両用インナーラダー
US20100101020A1 (en) 2008-10-23 2010-04-29 Daimler Ag Folding bunk with ladder
CN103291208B (zh) * 2013-06-27 2015-03-25 国家电网公司 一种钢管塔的辅助梯使用方法
DE102014018553A1 (de) * 2014-12-15 2016-06-16 Audi Ag Steighilfe zum Anbau an ein Kraftfahrzeug
CN108791000A (zh) * 2018-07-12 2018-11-13 张家港市港星汽车配套件有限公司 一种可移动的卡车上卧铺爬梯装置
KR102454381B1 (ko) * 2020-08-12 2022-10-17 주식회사 제이텍 접이식 사다리

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1887301A (en) * 1931-03-25 1932-11-08 Mack Atkins Berth ladder for sleeping cars
US2957539A (en) * 1959-03-16 1960-10-25 Fred W Gollbach Folding ladders
US4785912A (en) * 1987-12-14 1988-11-22 Lopez Jose A Folding ladder
US5366052A (en) * 1993-07-20 1994-11-22 Keh Lin Jeng Reversible folding ladder
US6073725A (en) * 1998-11-05 2000-06-13 Kumher; Don A. Multi-position ladder and support therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03042484A1 *

Also Published As

Publication number Publication date
SE0103786D0 (sv) 2001-11-14
SE0103786L (sv) 2003-05-15
SE522451C2 (sv) 2004-02-10
JP2005509768A (ja) 2005-04-14
WO2003042484A1 (fr) 2003-05-22

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