EP1229209B1 - Foldable step ladder - Google Patents

Foldable step ladder Download PDF

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Publication number
EP1229209B1
EP1229209B1 EP02002329A EP02002329A EP1229209B1 EP 1229209 B1 EP1229209 B1 EP 1229209B1 EP 02002329 A EP02002329 A EP 02002329A EP 02002329 A EP02002329 A EP 02002329A EP 1229209 B1 EP1229209 B1 EP 1229209B1
Authority
EP
European Patent Office
Prior art keywords
links
leg
abovementioned
climbing
points
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.)
Expired - Lifetime
Application number
EP02002329A
Other languages
German (de)
French (fr)
Other versions
EP1229209A1 (en
Inventor
Günter Liebhardt
Thomas Lämmler
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.)
Leifheit AG
Original Assignee
Leifheit AG
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 Leifheit AG filed Critical Leifheit AG
Publication of EP1229209A1 publication Critical patent/EP1229209A1/en
Application granted granted Critical
Publication of EP1229209B1 publication Critical patent/EP1229209B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E06C1/38—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
    • E06C1/387—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 having tip-up steps
    • 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
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E06C1/393—Ladders having platforms foldable with the ladder

Definitions

  • the invention relates to a folding step according to the preamble of claim 1. Such a folding step is shown in DE-U-83 34 841.7.
  • Femer is disadvantageous in the known handlebar construction that adjacent to the two pivot points adjacent areas of this rod-like handlebars to angled extensions of the treads uncontrollably more or less tight, so that by opening and closing the folding door with time unsightly sanding marks in the areas concerned give the mentioned angled extensions of the treads.
  • the guide slot extends in the Lenkem for serving as an abutment for the upper tread bar with a certain, relatively small distance from the connecting line of the two articulation points of a handlebar on the stile leg of the folding platform side facing away from this connection line in the Lenkem.
  • the present invention has for its object to reduce the manufacturing cost of the handlebars of the folding door; Furthermore, it should be achieved that in the region of the articulation points of the handlebars on the angled extensions of the treads no unsightly sanding marks arise more or less as a result of the opening and closing of the folding step.
  • the handlebar construction according to the invention allows the handlebars - while maintaining the advantages associated with it, that the guide slot in the handlebar for serving as abutment for the upper tread bar with a certain, relatively small distance from the line connecting the two pivot points of the handlebar on the side facing away from the riser of the folding step side of this connecting line in the handlebar - can be applied both on one side and on the other side of the treads, and also the problem of mentioned unsightly sanding marks is eliminated.
  • handlebars are also applicable for three- or multi-stage folding steps or ladders.
  • a folding step 1 which consists essentially of a riser leg 2, a support leg 3 hinged to the riser leg 2 and between riser and support leg 2 and 3 arranged treads 4 and 5 and 6 Lenkem.
  • the treads 4, 5 are pivotally connected via the articulation points 7-10 with the Lenkem 6 (the drawing shows only one of the two connecting the treads 4, 5 links), e.g. by means of rivet-type connecting means.
  • the articulation points 7-10 form the corners of a parallelogram.
  • the upper tread 4 is associated with an abutment in the form of a rod 11 which is fixed in the two spars of the support leg 3 and on which leads over the guide slot 12 of the handlebars 6. - The tread 4 is supported via a downwardly angled extension 4a on the rod 11.
  • a further guide slot 14 is provided in the handlebar.
  • the additionally provided in the handlebar 6 except the guide slot 12 guide slot 14 allows the use of similar handlebars for both sides of the treads 4, 5 of the folding door 1, wherein each of the aforementioned raised portions 15 and 16 at the respective extension 4a and 5a of the tread 4 or 5 abut. In this way, a cost-effective production of the handlebars is achieved.
  • the links 6 are made of flat material, e.g. Sheet steel, said raised portions 15, 16 are formed by stampings or the like.

Landscapes

  • Ladders (AREA)
  • Air Bags (AREA)
  • Dry Shavers And Clippers (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The folding step ladder (1) has a leg (2) with the ladder steps and a support leg (3). The steps (4,5) pivot on the ladder leg at one end, and have pivot mountings at the trailing ends for a linkage (6) between them, to form a parallelogram between the two legs when the ladder is opened out. The linkage member has two guide slits (12,14).

Description

Stand der TechnikState of the art

Die Erfindung betrifft einen Klapptritt entsprechend dem Oberbegriff des Anspruches 1. Ein derartiger Klapptritt ist der DE-U-83 34 841.7 zu entnehmen.The invention relates to a folding step according to the preamble of claim 1. Such a folding step is shown in DE-U-83 34 841.7.

Die Konstruktion der zur Verbindung der beiden Trittstufen vorgesehenen Lenker ("Gestänge") bei dem bekannten Klapptritt ist derart, dass die Lenker in notwendiger Anpassung an deren Anbringung entweder auf der einen oder auf der anderen Seite der Trittstufen - unterschiedlich ausgeführt sein müssen. Dies bedeutet entsprechend erhöhten Fertigungsaufwand.The construction of the provided for connecting the two treads handlebar ("linkage") in the known folding step is such that the handlebars in the necessary adaptation to their attachment either on the one or on the other side of the treads - must be performed differently. This means correspondingly increased production costs.

Femer ist bei der bekannten Lenkerkonstruktion nachteilig, dass an die beiden Anlenkpunkte angrenzende Bereiche dieser gestängeartigen Lenker an abgewinkelten Fortsätzen der Trittstufen unkontrolliert mehr oder weniger eng anliegen, so dass sich durch Auf- und Zuklappen des Klapptritts mit der Zeit unschöne Schleifspuren in den betreffenden Bereichen an den erwähnten abgewinkelten Fortsätzen der Trittstufen ergeben.Femer is disadvantageous in the known handlebar construction that adjacent to the two pivot points adjacent areas of this rod-like handlebars to angled extensions of the treads uncontrollably more or less tight, so that by opening and closing the folding door with time unsightly sanding marks in the areas concerned give the mentioned angled extensions of the treads.

Im übrigen verläuft der Führungsschlitz in den Lenkem für den als Widerlager für die obere Trittstufe dienenden Stab mit einem gewissen, relativ geringen Abstand von der Verbindungslinie der beiden Anlenkpunkte eines Lenkers auf der dem Steigschenkel des Klapptritts abgekehrten Seite dieser Verbindungslinie in den Lenkem. Hiermit kann erreicht werden, dass die Anlenkpunkte zwischen oberer Trittstufe und den beiden Lenkem im Raum zwischen dem betreffenden abgewinkelten Fortsatz der Trittstufe und der diesem Fortsatz zugekehrten Seite des betreffenden Holmes des Stützschenkels liegen. Dies hat der Gebrauchssicherheit und einem gefälligen Äußeren des Klapptritts dienende Vorteile.Moreover, the guide slot extends in the Lenkem for serving as an abutment for the upper tread bar with a certain, relatively small distance from the connecting line of the two articulation points of a handlebar on the stile leg of the folding platform side facing away from this connection line in the Lenkem. This can be achieved that the points of articulation between the upper tread and the two Lenkem lie in the space between the respective angled extension of the tread and the extension facing this side of the respective spar of the support leg. This has the safety of use and a pleasing appearance of the folding impact serving advantages.

Aufgabetask

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, den Fertigungsaufwand für die Lenker des Klapptritts zu verringern; femer soll erreicht werden, dass im Bereich der Anlenkstellen der Lenker an den abgewinkelten Fortsätzen der Trittstufen keine unschönen Schleifspuren mehr als Folge des Auf- und Zuklappens des Klapptrittes entstehen oder augenfällig sind.The present invention has for its object to reduce the manufacturing cost of the handlebars of the folding door; Furthermore, it should be achieved that in the region of the articulation points of the handlebars on the angled extensions of the treads no unsightly sanding marks arise more or less as a result of the opening and closing of the folding step.

Lösungsolution

Zur Lösung der vorstehend genannten Aufgabe wird die Erfindung entsprechend dem kennzeichnenden Teil des Anspruches 1 vorgeschlagen.To solve the above object, the invention according to the characterizing part of claim 1 is proposed.

Eine zweckmäßige Ausgestaltung des Erfindungsgedankens ist im Anspruch 2 angegeben.An expedient embodiment of the inventive concept is specified in claim 2.

Vorteileadvantages

Die erfindungsgemäße Lenkerkonstruktion ermöglicht es, dass der Lenker - unter Beibehaltung der Vorteile, die damit verbunden sind, dass der Führungsschlitz im Lenker für den als Widerlager für die obere Trittstufe dienenden Stab mit einem gewissen, relativ geringen Abstand von der Verbindungslinie der beiden Anlenkpunkte des Lenkers auf der dem Steigschenkel des Klapptritts abgekehrten Seite dieser Verbindungslinie im Lenker verläuft - sowohl auf der einen als auch auf der anderen Seite der Trittstufen angewendet werden kann, wobei überdies auch das Problem der erwähnten unschönen Schleifspuren beseitigt ist.The handlebar construction according to the invention allows the handlebars - while maintaining the advantages associated with it, that the guide slot in the handlebar for serving as abutment for the upper tread bar with a certain, relatively small distance from the line connecting the two pivot points of the handlebar on the side facing away from the riser of the folding step side of this connecting line in the handlebar - can be applied both on one side and on the other side of the treads, and also the problem of mentioned unsightly sanding marks is eliminated.

Natürlich sind derartige Lenker auch für drei- oder mehrstufige Klapptritte bzw. Leitern anwendbar.Of course, such handlebars are also applicable for three- or multi-stage folding steps or ladders.

Beschreibung der Erfindung an einem AusführungsbeispielDescription of the invention in one embodiment

Anhand der Fig. 1 bis 3 der Zeichnung wird die Erfindung im folgenden an einem Ausführungsbeispiel näher erläutert.1 to 3 of the drawing, the invention will be explained in more detail below using an exemplary embodiment.

Es zeigen

Fig. 1
einen erfindungsgemäßen Klapptritt im aufgeklappten Zustand in der Seitenansicht,
Fig. 2
den Klapptritt nach Fig. 1 im zusammengeklappten Zustand und ebenfalls in der Seitenansicht, und
Fig. 3
einen Teilbereich des Klapptritts nach den Fig. 1 und 2 entsprechend Schnittlinie III-III in Fig. 1 und in größerem Maßstab.
Show it
Fig. 1
a folding step according to the invention in the unfolded state in the side view,
Fig. 2
the folding step of Fig. 1 in the folded state and also in the side view, and
Fig. 3
a portion of the folding gate according to FIGS. 1 and 2 according to section line III-III in Fig. 1 and on a larger scale.

Die Fig. 1 und 2 zeigen einen Klapptritt 1, der im wesentlichen aus einem Steigschenkel 2, einem am Steigschenkel 2 angelenkten Stützschenkel 3 und zwischen Steig- und Stützschenkel 2 bzw. 3 angeordneten Trittstufen 4 und 5 sowie Lenkem 6 besteht.1 and 2 show a folding step 1, which consists essentially of a riser leg 2, a support leg 3 hinged to the riser leg 2 and between riser and support leg 2 and 3 arranged treads 4 and 5 and 6 Lenkem.

Die Trittstufen 4, 5 sind über die Anlenkpunkte 7-10 mit den Lenkem 6 (die Zeichnung zeigt nur den einen der beiden die Trittstufen 4, 5 verbindenden Lenker) gelenkig verbunden, z.B. mittels nietartiger Verbindungsmittel. Dabei bilden die Anlenkpunkte 7-10 die Ecken eines Parallelogramms.The treads 4, 5 are pivotally connected via the articulation points 7-10 with the Lenkem 6 (the drawing shows only one of the two connecting the treads 4, 5 links), e.g. by means of rivet-type connecting means. The articulation points 7-10 form the corners of a parallelogram.

Der oberen Trittstufe 4 ist ein Widerlager in Form eines Stabes 11 zugeordnet, der in den beiden Holmen des Stützschenkels 3 befestigt ist und an dem sich über den Führungsschlitz 12 der Lenker 6 führt. - Die Trittstufe 4 stützt sich über einen nach unten abgewinkelten Fortsatz 4a auf dem Stab 11 ab.The upper tread 4 is associated with an abutment in the form of a rod 11 which is fixed in the two spars of the support leg 3 and on which leads over the guide slot 12 of the handlebars 6. - The tread 4 is supported via a downwardly angled extension 4a on the rod 11.

Parallel zum Führungsschlitz 12 des Lenkers 6 und symmetrisch zu dessen die Anlenkpunkte 9 und 10 verbindender Längsachse 13 ist im Lenker ein weiterer Führungsschlitz 14 vorgesehen.Parallel to the guide slot 12 of the arm 6 and symmetrically to its the pivot points 9 and 10 connecting longitudinal axis 13, a further guide slot 14 is provided in the handlebar.

Zum Einhalten einer vorbestimmten Distanz zwischen dem Fortsatz 4a und den übrigen Bereichen des Lenkers 6 weist dieser an den Anlenkpunkten 9, 10 jeweils einen den Anlenkpunkt zentrisch und ringförmig umgebenden, erhabenen Bereich 15 bzw. 16 auf (siehe Fig. 3), der damit eine definierte und gleichbleibende Anlagefläche des Lenkers 6 am Fortsatz 4a der Trittstufe 4 bildet, die ein Entstehen unschöner Schleifspuren oder dgl. infolge von Klappbewegungen des Klapptritts 1 ausschließt.To comply with a predetermined distance between the extension 4a and the remaining areas of the arm 6, this has at the articulation points 9, 10 each a pivot point concentric and annular surrounding, raised area 15 and 16, respectively (see Fig. 3), thus a defined and consistent contact surface of the handlebar 6 on the extension 4a of the tread 4 forms, which precludes the emergence of unsightly sanding marks or the like. As a result of folding movements of the folding door 1.

Der im Lenker 6 außer dem Führungsschlitz 12 zusätzlich vorgesehene Führungsschlitz 14 ermöglicht eine Verwendung gleichartiger Lenker für beide Seiten der Trittstufen 4, 5 des Klapptritts 1, wobei jeweils die erwähnten erhabenen Bereiche 15 und 16 an dem betreffenden Fortsatz 4a bzw. 5a der Trittstufe 4 bzw. 5 anliegen. Auf diese Weise wird eine kostengünstige Fertigung der Lenker erreicht.The additionally provided in the handlebar 6 except the guide slot 12 guide slot 14 allows the use of similar handlebars for both sides of the treads 4, 5 of the folding door 1, wherein each of the aforementioned raised portions 15 and 16 at the respective extension 4a and 5a of the tread 4 or 5 abut. In this way, a cost-effective production of the handlebars is achieved.

Zweckmäßig bestehen die Lenker 6 aus Flachmaterial, z.B. aus Stahlblech, wobei die erwähnten erhabenen Bereiche 15, 16 durch Einstanzungen oder dgl. gebildet sind.Suitably, the links 6 are made of flat material, e.g. Sheet steel, said raised portions 15, 16 are formed by stampings or the like.

Claims (2)

  1. Stepladder (1) comprising a climbing leg (2), a supporting leg (3), which is articulated on the climbing leg (2), and steps (4, 5), which are arranged between the climbing and supporting legs (2 and 3), are provided with angled extensions (4a, 5a), are connected in an articulated manner to the climbing leg (2) and the links (6) of a link arrangement, and are guided between these in a manner of the parallelogram, and of which the top step (4) is assigned, in the supporting leg (3) an abutment in the form of a rod (11), which engages in a guide slot (12) of the links (6) acting on said step (4), the guide slot (12) of the links (6) which guides the abovementioned rod (11) running in the links (6) at a predetermined spacing from the connecting line (13) between the two points of articulation (9, 10) of each link (6), on that side of this connecting line (longitudinal axis 13) which is directed away from the climbing leg (2), characterized in that, at the points of articulation (9, 10), the links (6) have a raised region (15 and 16) which is directed towards the respectively adjacent angled extension (4a or 5a, respectively) of the relevant step (4 or 5, respectively) and retains a predetermined distance between the rest of the regions of the relevant link (6) and the abovementioned extention (4a or 5a, respectively), and in that two guide slots (12, 14) are provided in the links (6) symmetrically in relation to the abovementioned connecting line (13) between the points of articulation (9, 10).
  2. Stepladder according to Claim 1, characterized in that the links (6) consist of flat material, e.g. of sheet steel, and in that the abovementioned raised regions (15, 16) are formed by punching or the like.
EP02002329A 2001-02-01 2002-01-31 Foldable step ladder Expired - Lifetime EP1229209B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10104407A DE10104407A1 (en) 2001-02-01 2001-02-01 folding steps
DE10104407 2001-02-01

Publications (2)

Publication Number Publication Date
EP1229209A1 EP1229209A1 (en) 2002-08-07
EP1229209B1 true EP1229209B1 (en) 2007-05-09

Family

ID=7672407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02002329A Expired - Lifetime EP1229209B1 (en) 2001-02-01 2002-01-31 Foldable step ladder

Country Status (5)

Country Link
EP (1) EP1229209B1 (en)
AT (1) ATE362034T1 (en)
CZ (1) CZ2002391A3 (en)
DE (2) DE10104407A1 (en)
TW (1) TW582446U (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITCZ20080012A1 (en) * 2008-12-12 2010-06-12 Giovannina Manfredi SCALEO FOLDABLE TO ONE OR MORE STEPS, ESPECIALLY REALIZED FOR THE APPLICATION TO SHELVES OR EXHIBITORS.
CN113356750A (en) * 2021-07-27 2021-09-07 信阳农林学院 Gardens are with novel multi-functional gardens ladder
WO2023069065A1 (en) * 2021-10-18 2023-04-27 Anthony Willis Collapsible descent and ascent aids for pets

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR454605A (en) * 1913-02-20 1913-07-09 Georges Chevallier Folding step closing under an extremely reduced thickness
US3083786A (en) * 1961-09-19 1963-04-02 Bauer Mfg Company Stepladder
DE8334841U1 (en) 1983-12-05 1984-04-26 Krause-Werk Gmbh & Co Kg, 6320 Alsfeld FOLDING STEP

Also Published As

Publication number Publication date
DE50210099D1 (en) 2007-06-21
TW582446U (en) 2004-04-01
DE10104407A1 (en) 2002-08-08
EP1229209A1 (en) 2002-08-07
CZ2002391A3 (en) 2003-02-12
ATE362034T1 (en) 2007-06-15

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