EP1561898A2 - Leiter mit einer Trittplatte - Google Patents
Leiter mit einer Trittplatte Download PDFInfo
- Publication number
- EP1561898A2 EP1561898A2 EP04028721A EP04028721A EP1561898A2 EP 1561898 A2 EP1561898 A2 EP 1561898A2 EP 04028721 A EP04028721 A EP 04028721A EP 04028721 A EP04028721 A EP 04028721A EP 1561898 A2 EP1561898 A2 EP 1561898A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ladder
- pivot axis
- tread plate
- bearing
- ladder according
- 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- Withdrawn
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
-
- 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
-
- 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
- E06C7/081—Rungs or other treads comprising anti-slip features
Definitions
- the invention relates to a ladder according to the preamble of claim 1.
- Such a ladder is for example from DE-OS 197 41 319 known. Such ladders have treads, the can also be made of extruded profile. Another one Example of a stage made of extruded profile Head is apparent from DE-GM 200 10 298.
- Such treads or treads of the ladders extend typically firmly locked between the ladder bars, usually in a predetermined angle, for example, at a boarding ladder to allow a comfortable and safe climbing.
- stepladders are typically found next to them also provided treads or treads one pivotal tread plate on, in their footprint opposite the treads is significantly increased, for example by a factor of 2 or 3 and hinged to two spars is.
- a pedal plate lifter can be the tread plate when placing the ladder in a horizontal position swing.
- tread plates are typically made of cold or thermoformed sheets produced by riveting, spot welded joints or other suitable fasteners associated with bearing elements. This includes the pivot axis the tread plate, but also the one or more foot plate lifters for the guided pivoting movement of the footboard.
- the bearing elements are either made of steel or - in light metal ladders - partly also made of light metal, so a right large manufacturing effort is required.
- tread plates as a plastic injection molded part, for example made of glass fiber reinforced Produce plastic.
- such solutions come mainly in plastic ladders and are not unsuitable for light metal conductors.
- the invention has the object, a ladder, According to the preamble of claim 1 to provide a better stability on the tread plate provides, but still a high quality appearance allows, without the production costs be enlarged.
- the tread plate over the entire surface is designed as an aluminum extruded profile, the accordingly in the erected state of the ladder the ladder spars possibly surmounted or at least the area between completely filling them. It goes without saying that this an actuating gap, which is certainly for example 1 cm can, remains unfilled. There or below the tread plate can the treadplate for the footboard mounted be, with which the tread plate in a conventional manner is pivoted when folding the spars.
- the tread plate from the extruded profile for example made of aluminum or an aluminum alloy can be quite light but nevertheless can be designed extremely torsionally stiff. This especially succeeds when using an extruded hollow profile which has the added benefit of being soiling-prone, but also the low vulnerability to injury offers.
- the tread plate by the extruded profile, that equally designed bearing shells for the tread axles are.
- bearings can be particularly favorable in integrate an extruded chamber profile, so a profile, which offers individual cavities according to the type of segments, the extend across the tread plate.
- leaves there bearing cup integrate integrally and over a large area, with the long extension of the bearing shell a favorable pressure distribution arises, which in any case expect less wear leaves as extending over at most a few inches Bearing shells for sheet metal plates.
- the tread plate according to the invention is preferably on its upper side with a per se known extruded corrugation Mistake. Furthermore, it is preferable that the extruded profile over a suitable plastic molding, which after the manner of a plug trapped in the cavities formed, laterally complete, even if this is for the function of the invention Footboard is not essential.
- a plastic molding is used as the side finisher, It is also possible, this in the range of the pivot axis bearing pull in and work there as a kind of spacer to let so that the lateral centering of the invention Tread plate then over the two lateral plastic moldings can be done. After such a plastic molding also made of a relatively soft plastic can be, results in an elastic lateral support the treadboard according to the invention.
- the support bar receptacle of the tread plate as the pivot axis recording opposite storage substantially semicircular is stored, or semicircular with slightly elongated Thighs. This can also be in one piece a provide safe support with also good load distribution.
- the extension angle the support bar receptacle slightly increased compared to 180 °, for example, 185 °.
- Sense of this configuration is, a Art retract the support rod to allow, thus the Ladder hereby gives a particularly good stability.
- investigations have revealed that the torsional stiffness and so that the stability of the ladder also depends how strong the two pairs mechanically with each other are connected. By a mechanical against a loose pad much more stable coupling in the area of the support bar can the torsional rigidity of the pair of bars against each other and thus significantly increase the stability of the ladder.
- the footboard with in the area of the support rod receptacle and in the Form the area of the pivot rod receptacle rounded edges.
- the radius of the rounding of the edges in wide areas is adaptable to the requirements.
- it may be one fifth of the pivot axis radius, where but it is also possible, the tread plate each semicircular end form, so that the local radius depending on the pivot axes or even exceeds the support bar radius.
- a ladder according to the invention has a tread plate 10 which a substantially planar surface 12 offers.
- the tread plate 10 is made of an extruded aluminum alloy produced. She has a closed profile with in the illustrated Embodiment 8 chambers 14 to 28, which predominantly flat-rectangular are designed or for training are suitably shaped by axle bearings.
- the surface 12 is provided with a plurality of ribs 30, which significantly improve the skid resistance of the tread plate 10 and evenly spaced, for example, 5 mm or Extend 10 mm above the surface of the footboard.
- the tread plate 10 is in the illustrated embodiment almost square in plan view. It basically fills up the space between the 4 spars in the erected state of the Stepladder off.
- the tread plate 10 a Swivel axle bearing 32 for the pivot axis shown in dashed lines 34 of the tread plate offers.
- the treadle camp is through the two chambers 26 and 28 bounded and surrounds the tread plate over an angle of about 250 °, it being understood that this angle can be adapted in many areas to the requirements is. In any case, it should be more than 180 ° to the safe storage of the pivot axis 34 in the pivot axis bearing to ensure.
- the material thickness of the tread top wall 36, the Tread plate bottom wall 38 and the webs 40 between the chambers 14 to 28 is typically chosen quite low and for example 0.5 mm to 2.5 mm, it is favorable according to the invention, if the wall thickness of the pivot axis bearing 32 in contrast essential is greater, for example, is twice. This is also apparent from Fig. 1.
- pivot axis bearing 32 in one piece to the top wall 36th pull up, so that the pivot axis 32 virtually full surface the tread plate 10 is supported on its upper side.
- the chambers 26 and 28 are relatively small and surround the pivot axis bearing 32 so that the of the pivot axis bearing 32 each side webs facing away 42 and 44 approximately substantially have the same distance from the pivot axis 34.
- the pivot axis bearing 32 provides a downwardly open slot 46 which extends does not extend vertically downwards, but slightly obliquely to the Tread plate center offset.
- the slot 46 allows it at the same time, that any impurities from the pivot axis bearing 32 as it were by itself leaving the pivot axis bearing, so that when setting up the ladder a kind of self-cleaning the Schwenkachsenlagers arises.
- the pivot axis 34 opposite the support bar 50 of the ladder is provided, which is in known per se transversely between the support struts of the stepladder extends. It is overlapped by a support rod bearing 52, the substantially semicircular formed in the Extruded profile is provided. In the illustrated embodiment is the semicircular opening of the support rod bearing 52 is provided practically perpendicular downward, it being understood that a slight inclination when needed a desired clamping effect for anchoring the Support rod on the support rod bearing 52 may allow.
- pivot axis bearing 32 correspondingly has the Support rod bearing 52 laterally slightly smaller chambers 14 and 16th who surround it. About a bearing web 54, the chambers 14th and 16 separated from each other and at the same time the top wall 36 on the Support rod bearing 52 supported.
- the chambers 16 a height / width ratio of 1: 4, it being understood that this ratio is widely adapted to the needs is customizable and, for example, 1: 2 or 1:10 amount can.
- a footplate bearing 60 integrated.
- the footplate bearing is designed as an eye, in its area the Lower wall 38 is pulled slightly further down. It serves the lateral recording of one foot plate lifter in the actuating gap between the four spars of the ladder and the tread plate 10th
- Tread plate lifters are articulated in a conventional manner, wherein It is understood that the treadplate lifts either a fairly short extruded profile or a die-cut Sheet metal part can exist.
- the outermost chambers 14 and 28 are provided with radii at the bottom and top of the Tread plate 10 each offer a degree.
- the radii 62 to 68 are formed quite small in the illustrated embodiment and make it possible, the risk of injury to the side To abut impact on the tread plate significantly. It understands itself, that instead of the radii 62 and 64 the on the one hand and 66 and 68 on the other hand so they can be great depending on the type of semicircle Radius is formed.
- Fig. 2 is an enlarged view of a detail of the tread plate 10 can be seen. Then extending to the radius 62 the top wall 36 with the same wall thickness over the entire Kick Plate Top.
- the wall thickness is in the range of ribs 30 increases, the triangular in the illustrated embodiment are formed. It goes without saying that instead any other rib shapes, such as round ribs or rectangular ribs, possibly also rectangular ribs with rounded edges Edges, can be provided.
- pivot axis 34 can also stub axle each protrude laterally into the pivot axis bearing 32.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
Description
- Fig. 1
- eine schematische Ansicht eines Strangpressprofils einer erfindungsgemäßen Leiter, nämlich der dort vorgesehenen Trittplatte in einer Ausführungsform; und
- Fig. 2
- eine vergrößerte Ansicht eines Teils der Trittplatte gemäß Fig. 1.
Claims (10)
- Leiter, mit einer Trittplatte, die sich zwischen Leiternholmen erstreckt und insbesondere schwenkbar zwischen zwei Leiternholmen gelagert ist, dadurch gekennzeichnet, dass die Trittplatte (10) aus einem Leichtmetall-Strangpressprofil hergestellt ist, das abgesehen von einem Betätigungsspalt den Raum zwischen den Leiternholmen im Wesentlichen ausfüllt und das mindestens eine Schwenklagerung (Schwenkachse (34), Achsstummel) für die schwenkbare Lagerung der Trittplatte (10) zwischen den beiden Holmen fest lagert.
- Leiter nach Anspruch 1, dadurch gekennzeichnet, dass in dem Betätigungsspalt Trittplattenheber gelagert sind, die insbesondere den Betätigungsspalt im Wesentlichen ausfüllen.
- Leiter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schwenklagerung für die bewegliche Lagerung der Trittplatte (10) in das Stangpressprofil eingebrachte, insbesondere kraftschlüssig gelagerte Achsstummel aufweist.
- Leiter nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass eine durchgehende Schwenkachse (34) sich zur Bildung der Schwenkachslagerung ein durch das Schwenkachsenlager (32) hindurch erstreckt.
- Leiter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Strangpressprofil als Hohlprofil ausgebildet ist und insbesondere mehrere nebeneinanderliegende Kammern (14, 16, 18, 20, 22, 24, 26, 28) ausbildet, die durch Trennrippen (30) voneinander im Wesentlichen im gleichen Abstand getrennt sind.
- Leiter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Strangpressprofil zentral nach unten vorgewölbt ist und dort die Lagerung (60) für die Trittplattenheber aufnimmt, wobei die Vorwölbung oder der Vorsprung insbesondere abgerundet ausgebildet ist.
- Leiter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Schwenkachsenlager (32) für die Aufnahme der Schwenkachse (34) oder von Achsstummeln für die Schwenklagerung der Trittplatte (10) als Teilkreis ausgebildet ist, der sich insbesondere über einen Winkel von 200° bis 350° und bevorzugt über einen Winkel von 230° bis 270° und bevorzugt etwa über einen Winkel von 250° erstreckt.
- Leiter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jenseits des Schwenkachsenlagers (32) ein Hohlprofil (14, 28) ausgebildet ist, dass sich über die gesamte Bauhöhe der Platte erstreckt.
- Leiter nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Trittplatte (10) sich zwischen der Schwenkachsenaufnahme und einer Stützstangenaufnahme erstreckt, die im Wesentlichen halbkreisförmig ausgebildet ist.
- Trittplatte nach Anspruch 9, dadurch gekennzeichnet, dass das Strangpressprofil als Hohlprofil mit mehreren Kammern (16, 18, 20, 20, 22, 24, 26, 28) ausgebildet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420001918 DE202004001918U1 (de) | 2004-02-09 | 2004-02-09 | Leiter mit Trittplatte |
DE202004001918U | 2004-02-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1561898A2 true EP1561898A2 (de) | 2005-08-10 |
EP1561898A3 EP1561898A3 (de) | 2008-05-07 |
Family
ID=32103811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04028721A Withdrawn EP1561898A3 (de) | 2004-02-09 | 2004-12-03 | Leiter mit einer Trittplatte |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1561898A3 (de) |
DE (1) | DE202004001918U1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105672868A (zh) * | 2014-07-21 | 2016-06-15 | 华巧波 | 一种防滑梯上的梯板 |
USD855833S1 (en) | 2017-01-04 | 2019-08-06 | Tricam Industries, Inc. | Ladder rail |
USD860476S1 (en) | 2017-01-04 | 2019-09-17 | Tricam Industries, Inc. | Hinge for a multi-position ladder |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202011002535U1 (de) * | 2011-02-09 | 2012-05-11 | Hailo-Werk Rudolf Loh Gmbh & Co. Kg | Stufe für eine Leiter, einen Klapptritt oder ähnliches |
CN105735885A (zh) * | 2014-07-21 | 2016-07-06 | 华巧波 | 一种防滑梯上的梯板及其使用方法 |
CN105735887A (zh) * | 2014-07-21 | 2016-07-06 | 华巧波 | 一种防滑梯上的梯板 |
CN105735886A (zh) * | 2014-07-21 | 2016-07-06 | 华巧波 | 一种防滑梯上的梯板及其使用方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20010298U1 (de) | 2000-06-08 | 2000-08-17 | Zarges Leichtbau Gmbh, 82362 Weilheim | Stufe oder Sprosse sowie Leiter |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6012548A (en) * | 1999-02-25 | 2000-01-11 | R.M.M., Inc. | Ladder frame |
FR2832608B1 (fr) * | 2001-11-23 | 2004-02-13 | Tubesca | Marchepied a biellette ressort de plate-forme |
-
2004
- 2004-02-09 DE DE200420001918 patent/DE202004001918U1/de not_active Expired - Lifetime
- 2004-12-03 EP EP04028721A patent/EP1561898A3/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE20010298U1 (de) | 2000-06-08 | 2000-08-17 | Zarges Leichtbau Gmbh, 82362 Weilheim | Stufe oder Sprosse sowie Leiter |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105672868A (zh) * | 2014-07-21 | 2016-06-15 | 华巧波 | 一种防滑梯上的梯板 |
USD855833S1 (en) | 2017-01-04 | 2019-08-06 | Tricam Industries, Inc. | Ladder rail |
USD860476S1 (en) | 2017-01-04 | 2019-09-17 | Tricam Industries, Inc. | Hinge for a multi-position ladder |
Also Published As
Publication number | Publication date |
---|---|
EP1561898A3 (de) | 2008-05-07 |
DE202004001918U1 (de) | 2004-04-08 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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Effective date: 20100701 |