EP2383418A2 - Ausziehbare Hängeleiter - Google Patents

Ausziehbare Hängeleiter Download PDF

Info

Publication number
EP2383418A2
EP2383418A2 EP11164260A EP11164260A EP2383418A2 EP 2383418 A2 EP2383418 A2 EP 2383418A2 EP 11164260 A EP11164260 A EP 11164260A EP 11164260 A EP11164260 A EP 11164260A EP 2383418 A2 EP2383418 A2 EP 2383418A2
Authority
EP
European Patent Office
Prior art keywords
ladder
stringer
web
stringers
constitute
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
EP11164260A
Other languages
English (en)
French (fr)
Other versions
EP2383418B1 (de
EP2383418A3 (de
Inventor
Pentti Piri
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.)
Lapuan Piristeel Oy
Original Assignee
Lapuan Piristeel Oy
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 Lapuan Piristeel Oy filed Critical Lapuan Piristeel Oy
Priority to PL11164260T priority Critical patent/PL2383418T3/pl
Publication of EP2383418A2 publication Critical patent/EP2383418A2/de
Publication of EP2383418A3 publication Critical patent/EP2383418A3/de
Application granted granted Critical
Publication of EP2383418B1 publication Critical patent/EP2383418B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E06C9/02—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes rigidly mounted
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02—Stairways; Layouts thereof
    • E04F11/04—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible
    • E04F11/06—Movable stairways, e.g. of loft ladders which may or may not be concealable or extensible collapsible, e.g. folding, telescopic
    • 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
    • E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
    • E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
    • E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/08—Special construction of longitudinal members, or rungs or other treads
    • E06C7/082—Connections between rungs or treads and longitudinal members
    • 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
    • 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
    • E06C9/14—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with non-rigid longitudinal members, e.g. rope or chain ladders, ladders of the lazy-tongs type

Definitions

  • the invention relates to a ladder as defined in the preamble of claim 1.
  • a telescopic hang-on ladder including a set of ladder elements coupled to each other so that the sequential ladder elements are telescopically movable relative to each other in order to extend and collapse the ladder.
  • Each ladder element includes two parallel stringers spaced apart from each other, the cross-sectional profile of each stringer comprising a planar web, and guide members on each of the long edges of the web, wherein the guide members of the stringer of each upper ladder element constitute a slide guide for the stringer of the lower ladder element.
  • a step extends between the stringers substantially perpendicularly to the lengthwise direction of the stringers and is mounted from each end to the web of a stringer approximately in the middle of the cross section of the stringer.
  • the long edges of the web comprise outwardly opening grooves and adjacent inwardly opening grooves which constitute the guide members.
  • a further problem is that the stringer profile of the EP publication can be reasonably manufactured only by extruding light metal, which limits the available materials. In order to have a sufficiently strong structure from light metal, it must have a high material thickness, whereby the stringer structure becomes thick. For example, the use of steel as the stringer material of the EP publication is practically excluded.
  • the objective of the invention is to remedy the drawbacks referred to above.
  • the objective of the invention is to disclose an emergency ladder wherein the stringers can be manufactured by bending and wherein the material of the stringers is not limited to light metal.
  • the objective of the invention is to disclose a ladder wherein the assembly constituted by the stringers is as narrow as possible when the ladder is disposed in the telescopically collapsed configuration, so that the ladder can be made as unobtrusive as possible.
  • the ladder according to the invention is characterized by what has been presented in claim 1.
  • the stringers of each ladder element are substantially fitted, for the most of their part, within the corresponding stringers of the adjacent upper ladder element.
  • Both of the long edges of the web comprise a planar flange bent at an acute angle relative to the plane of the web, wherein the flanges together with the web constitute said guide members, so that each stringer of the upper ladder element constitutes a dovetail guide for the stringer of the lower ladder element fitted within said stringer.
  • the advantage of the invention is that the stringers of the ladder can be made strong, rigid and when provided in the telescopically nested collapsed configuration the structure is flat and unobtrusive.
  • the stringers are formed from a metal sheet by bending.
  • a stringer comprises an elongated slot, the length of which determines the allowed range for the movement of the stringer of the lower ladder element fitted within said stringer.
  • a projecting member is mounted to the upper end of a stringer, wherein the projecting member is fitted to extend through the slot of the upper stringer substantially not further than the level of the outer surface of the web, so that the lower end of the slot constitutes a stop for the movement of the projecting member.
  • the projecting member is a countersunk bolt with the head part disposed in the slot, and wherein the edges of the slot comprise a bevel with the bevel angle corresponding to the angle of the head part.
  • the countersunk bolt is adapted, together with a nut screwed thereto, to constitute a mounting member in order to mount a step to the web of a stringer.
  • both ends of a step comprise at least one long hole disposed in the lengthwise direction of the step.
  • the nut includes at least one transverse projection extending through the long hole, so that in tightening the nut the transverse projection tightens against one end of the long hole.
  • the nut is a wing nut, the wings of which constitute said transverse projections.
  • the step has a cross-sectional profile of an upturned U-shape, wherein both of the U-branches of the step comprise said long hole through which the wing of the wing nut extends.
  • the uppermost ladder element of the ladder is adapted to be connected to the wall of a building by a connection device.
  • the connection device includes a wall mounting which is mountable to the wall of a building, and at least two folding arms pivotally mounted from one end to the wall mounting and pivotally mounted from the other end to the uppermost ladder element, wherein the folding arms constitute an articulated parallelogram mechanism by which the ladder is moveable between a storage position close to the wall and a service position spaced apart from the wall.
  • the ladder includes a releasable locking device adapted to hold the ladder in the telescopically collapsed storage position and, once the user has released the locking device, to deploy the ladder to the service position and to extend telescopically.
  • the ladder is a deployable emergency ladder.
  • Fig. 1 and 3 show a telescopic hang-on ladder including a set of ladder elements 1 1 , 1 2 , 1 3 ... 1 6 coupled to each other so that the sequential ladder elements are telescopically movable relative to each other in order respectively to extend and collapse the ladder.
  • Each ladder section includes two parallel stringers 2 1 and 2 2 spaced apart from each other.
  • the cross-sectional profile of a stringer comprises a planar web 3, and both long edges of the web 3 comprise guide members, wherein the guide members of the stringer of each upper ladder element constitute a slide guide for the stringer of the adjacent lower ladder element.
  • a step 4 extends between the stringers 2 1 and 2 2 substantially perpendicularly to the lengthwise direction of the stringers 2 1 , 2 2 and is mounted from each end to the web 3 of the stringer.
  • the stringers 2 1 , 2 2 of each ladder element are substantially fitted, for the most of their part, within the corresponding stringers of the adjacent upper ladder element.
  • both of the long edges of the web 3 comprise a planar flange 5, 6 bent at an acute angle ⁇ relative to the plane of the web, wherein the flanges together with the web 3 constitute the guide members, so that each stringer of the upper ladder element constitutes a dovetail guide for of the lower ladder element fitted within said stringer.
  • the stringers 2 1 , 2 2 are preferably formed from a metal sheet by bending.
  • each stringer 2 1 , 2 2 comprises an elongated slot 7, the length of which determines the allowed movement range of the stringer of the lower ladder element fitted within said stringer.
  • a projecting member 8 mounted to the upper end of a stringer is a projecting member 8 fitted to extend through the slot 7 of the upper stringer substantially not further than the level of the outer surface of the web 3, so that the lower end of the slot 7 constitutes a stop for the movement of the projecting member 8.
  • the projecting member 8 is a countersunk bolt 8 with the head part 9 disposed in the slot 7, the edges of the slot comprising a bevel 10, the bevel angle of which corresponds to the angle of the head part.
  • the countersunk bolt 8 is adapted, together with a nut 11 screwed thereto, to constitute a mounting member in order to mount a step 4 to the web 3 of the stringer.
  • both ends of a step 4 comprise a long hole 12.
  • the nut 11 includes a transverse projection 13 extending through the long hole 12, so that in tightening the nut 11 the transverse projection 13 tightens against the end of the long hole 12.
  • the nut 11 is a wing nut, the wings of which constitute the transverse projections 13.
  • the step 4 has a cross-sectional profile of an upturned U-shape.
  • Both of the U-branches 14 of the step 4 comprise a long hole 12, through which the wing of the wing nut extends. When the countersunk screw is tightened, the wings 13 of the wing nut 111 press against the end of the long hole 12 and tighten the step 4 in place.
  • Fig. 6 and 7 show a deployable emergency ladder.
  • the uppermost ladder element 1 1 of the ladder is adapted to be coupled to the wall of a building by a coupling device 15.
  • the coupling device 15 includes a wall mounting 16 that is mountable to the wall of a building, and at least two folding arms 17, 18 pivotally mounted from one end to the wall mounting 16 and pivotally mounted from the other end to the uppermost ladder element 1 1 , so that the folding arms 17, 18, the wall mounting 16 and the uppermost ladder element 1 1 constitute an articulated parallelogram mechanism.
  • the path of movement of the articulated parallelogram mechanism is limited by stops so that the movement is stopped when the folding arms are disposed in the horizontal position.
  • the ladder is moveable between a storage position A close to the wall, as presented in Fig.
  • the ladder includes a releasable locking device 19 adapted to hold the ladder telescopically collapsed in the storage position A and, once the user has released the locking device, to deploy the ladder to the service position B and to extend telescopically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)
EP11164260.9A 2010-04-30 2011-04-29 Ausziehbare Hängeleiter Active EP2383418B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11164260T PL2383418T3 (pl) 2010-04-30 2011-04-29 Teleskopowa drabina zawieszana

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20105470A FI122529B (fi) 2010-04-30 2010-04-30 Teleskooppinen ripustettava tikas

Publications (3)

Publication Number Publication Date
EP2383418A2 true EP2383418A2 (de) 2011-11-02
EP2383418A3 EP2383418A3 (de) 2015-10-14
EP2383418B1 EP2383418B1 (de) 2016-12-07

Family

ID=42133309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11164260.9A Active EP2383418B1 (de) 2010-04-30 2011-04-29 Ausziehbare Hängeleiter

Country Status (4)

Country Link
EP (1) EP2383418B1 (de)
FI (1) FI122529B (de)
LT (1) LT2383418T (de)
PL (1) PL2383418T3 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997026A (en) 1973-12-13 1976-12-14 Riehlmann Joseph F Collapsible ladder assembly suitable for use as fire escape
EP1777358A2 (de) 2005-10-19 2007-04-25 Werner Co. Zutrittsleiter mit Kolben

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3946833A (en) * 1973-12-13 1976-03-30 Riehlmann Joseph F Collapsible ladder suitable for use as fire escape
JPS5667085A (en) * 1979-10-31 1981-06-05 Matsushita Electric Works Ltd Expansion laddar
US4429766A (en) * 1982-09-13 1984-02-07 Andral Corporation Ladder consisting of sliding sections
US5062499A (en) * 1990-10-10 1991-11-05 Tu Ching Chuan Side rails fastening mechanism for telescopic aluminum step ladders

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997026A (en) 1973-12-13 1976-12-14 Riehlmann Joseph F Collapsible ladder assembly suitable for use as fire escape
EP1777358A2 (de) 2005-10-19 2007-04-25 Werner Co. Zutrittsleiter mit Kolben

Also Published As

Publication number Publication date
EP2383418B1 (de) 2016-12-07
EP2383418A3 (de) 2015-10-14
FI20105470A0 (fi) 2010-04-30
PL2383418T3 (pl) 2017-05-31
FI20105470A7 (fi) 2011-10-31
FI122529B (fi) 2012-03-15
LT2383418T (lt) 2017-03-10

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