EP1439280A1 - Marchepied à biellette ressort de plate-forme - Google Patents
Marchepied à biellette ressort de plate-forme Download PDFInfo
- Publication number
- EP1439280A1 EP1439280A1 EP03290122A EP03290122A EP1439280A1 EP 1439280 A1 EP1439280 A1 EP 1439280A1 EP 03290122 A EP03290122 A EP 03290122A EP 03290122 A EP03290122 A EP 03290122A EP 1439280 A1 EP1439280 A1 EP 1439280A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- platform
- plan
- step according
- stand
- loop
- 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- Withdrawn
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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
- E06C1/14—Ladders capable of standing by themselves
- E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
- E06C1/20—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as poles
-
- 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
- E06C7/18—Devices for preventing persons from falling
- E06C7/181—Additional gripping devices, e.g. handrails
- E06C7/182—Additional gripping devices, e.g. handrails situated at the top of the ladder
Definitions
- the invention relates to a step including the articulation link at the platform has a bending capacity at the load and allows bring the platform to the horizontal even if the opening angle of the step is lower due to the space available.
- the steps generally have a platform upper articulated to the step plan and connected by its lower face to a link hinged to the stand plan.
- This link is rigid and allows the platform to be folded down in the step plan at the close the step and open it horizontally in the service.
- the opening angle of the kickstand and the step plane is equal at its nominal service value otherwise, if the angle is insufficient, the platform cannot be brought horizontally, remaining in position inclined, not locked, and if the operator risks accessing it, the connecting rod or its joints may break.
- the invention aims to remedy these drawbacks and proposes a step with crutch plan, step plan articulated by its uprights at the level above the stand plan, and an upper platform hinged to the step plan, characterized by that the platform is connected to the kickstand plane by means of two spring wire rods, generally arched in shape and arranged in each side of the platform, each articulated to the stand and to the platform on its underside, said links making it possible to fold the platform down substantially in the plane of steps out of service position and return it to the horizontal position service with positioning lock.
- Said loop extends laterally in width to form a double open loop with snap-in mounting on the cross rod, this double loop forming spacer of the articulation centering of the platform on the step plan.
- the snap-in mounting of the double stand loop facilitates the mounting of the platform on the step.
- the links slightly deviate from the lateral edge of the platform, from their articulation fold at the platform to their end loop, so there is no risk of getting your fingers caught between the link and the platform during its travel.
- the platform is advantageously profiled in section variable over its length and regular in width, calculated in dimension according to the flexural strength, maintained substantially equal in length from a central load. So the face bottom of the platform has a section in the shape of an ellipse part, turned down and with the ventral part in the center.
- One of platform ends is profiled with a regular bore hole on its width receiving in articulation the cross rod support of step plan, and the other end is regularly profiled in hook-shaped width, receiving in the open service position the support rod support leg.
- the hook is oriented towards the outside with grip towards the inside and engages in a snap-on manner on the crutch plan cross member, the engagement engaged being carried out opposite the hook under the external elastic return of the rods on the hook relative to their articulation on the platform.
- the platform is advantageously made from material extrusion synthetic, polyvinyl chloride for example, and so preferential bi-extrusion of two synthetic materials, with bands of flexible rubber adhering on the upper face.
- the step according to the invention essentially consists of a step plan 1, a crutch plane 3 articulated by its upper end to the plane of steps 1, and an upper platform 5 hinged to the plane of steps.
- the platform 5 is articulated to the step plan 1 at its front end by a cross rod 7 transversely connecting the amounts of the step plan, substantially in its middle part.
- the platform 5 is further connected to the stand plane 3 by means two lateral spring wire rods 9, articulated by one end at the platform and fixed by the other end to a cross rod 11 arranged at an adequate height on the stand plane.
- the rods 9 are identical ( Figure 5). They have a transverse fold end 13 forming an axis of articulation to the platform, part of body 15 with rounded or arcuate shape, and a double loop 17 with the end opposite the fold and engaged by snap-fastening through its opening on the cross rod 11 of the stand plane.
- the body part 15 is capable of flexing widely along an arc of smaller radius as we seen in Figure 3 where the platform, normally tilted in half-open position of the running board in phantom is brought to the horizontal under the operator's load.
- the transverse fold 13 is received in a bore part complementary 19 to the platform, arranged substantially in part median of it and on its underside.
- the platform is made from extrusion of material profile synthetic with a section with a flat upper surface and substantially ellipsoidal lower surface. This platform is in additionally structured with internal ribs 21 determining a beam with substantially equivalent bending capacity over its entire surface relative to a central load. The middle part is maximum thickness and the section is reduced towards the ends.
- the front end, on the tread side, is cylindrical profiled and has a central bore receiving the cross rod 7 of the plane of steps, to which the platform is hinged.
- the rear end, on the stand side, is shaped like a hook 25 in section whose nose is external and the grip part 27 is oriented inward and backward.
- This hook end of the platform allows to lock the opening position of the step in position of service, the hook 25 coming to engage elastically on the rod of cross member 11 of the side stand plan while the connecting rods 9 provide forward traction on the hook.
- the articulation movement of platform 5 on the plane of steps 1 is further centered by the fact that the double loop end 17 of the spring rods serves as a spacer with slight application pressure on the internal face of the uprights of the crutch 3. Keeping the articulation movement of the platform centered is therefore balanced in an elastic manner by the lateral spring effect of the rods, these being further arranged with their body 15 released laterally from the edge opposite the platform.
- the body plan of rod can be oriented at an angle of about 10 ° from the edge plane of the platform, so that this clearance prevents the operator from pinch your fingers on the link and the platform being step maneuver.
- the mounting of the step is also facilitated by the structure with spring rods.
- the plans of crutches 3 and steps 1 being articulated and the platform 5 mounted articulated on the plane of steps, the connection of the platform to the crutch plan is obtained by simple snap-fastening of the double loop 17 of the rods on the rod corresponding crutch plan cross member, articulation fold 13 being previously mounted in the corresponding bore 19 of the platform.
- the shape of the rods can change while keeping the spring effect.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rehabilitation Tools (AREA)
Abstract
Description
- la figure 1 est une vue en élévation du marchepied selon l'invention en position ouverte de service,
- la figure 2 est une vue en perspective du marchepied en position entrouverte,
- la figure 3 est une vue du marchepied en élévation en position entrouverte forcée,
- la figure 4 est une vue de côté partielle du marchepied en position ouverte, et,
- la figure 5 est une vue de la biellette ressort seule.
Claims (10)
- Marchepied comportant un plan de béquille (3), un plan de marches (1) articulé par ses montants au niveau supérieur au plan de béquille (3), et une plate-forme supérieure (5) articulée au plan de marches (1), caractérisé en ce que la plate-forme (5) est reliée au plan de béquille (3) au moyen de deux biellettes à fil ressort (9), à forme générale arquée et disposées de chaque côté de la plate-forme (5), articulées chacune au plan de béquille (3) et à la plate-forme (5) à sa face inférieure, lesdites biellettes (9) permettant de rabattre la plate-forme sensiblement dans le plan de marches en position hors service et de la ramener à l'horizontale en position de service avec verrouillage du positionnement.
- Marchepied selon la revendication 1, caractérisé en ce que chacune desdites biellettes (9) est articulée à la plate-forme (5) selon un pli transversal (13) reçu dans une partie d'alésage latérale complémentaire (19) de la plate-forme, et au plan de béquille (3) par une boucle d'extrémité ouverte (17) recevant par engagement encliqueté la tige de traverse (11) en regard du plan de béquille.
- Marchepied selon la revendication 2, caractérisé en ce que ladite boucle s'étend latéralement en largeur pour former une double boucle (17) ouverte à montage encliqueté sur la tige de traverse (11), cette double boucle (17) formant entretoise du centrage d'articulation de la plate-forme (5) sur le plan de marches (1).
- Marchepied selon l'une des revendications précédentes, caractérisé en ce que les biellettes (9) s'écartent légèrement du bord latéral de la plate-forme (5), depuis leur pli d'articulation (13) à la plate-forme jusqu'à leur extrémité en boucle (17), de sorte qu'on ne risque pas de se coincer les doigts entre la biellette et la plate-forme lors de leur débattement.
- Marchepied selon l'une des revendications précédentes, caractérisé en ce que La plate-forme (5) est à forme profilée à section variable sur sa longueur et régulière en largeur, calculée en dimension selon la capacité de résistance à la flexion, maintenue sensiblement égale sur la surface à partir d'une charge centrale.
- Marchepied selon la revendication 5, caractérisé en ce que la face inférieure de la plate-forme (5) a une section à forme de partie d'ellipse, tournée vers le bas et avec la partie ventrale au centre.
- Marchepied selon l'une des revendications précédentes, caractérisé en ce que l'une des extrémités de la plate-forme est profilée avec un trou régulier d'alésage sur sa largeur recevant en articulation la tige de traverse (7) de plan de marches et l'autre extrémité est profilée régulièrement en largeur à forme de crochet (25) recevant en position ouverte de service la tige de traverse (11) de plan de béquille.
- Marchepied selon la revendication 7, caractérisé en ce que le crochet (25) est orienté vers l'extérieur avec prise vers l'intérieur et s'engage de façon encliquetée sur la tige de traverse (11) de plan de béquille, l'engagement encliqueté étant réalisé à l'opposé du crochet (25) sous le rappel élastique des biellettes (9) sur le crochet relativement à leur articulation sur la plate-forme.
- Marchepied selon l'une des revendications précédentes, caractérisé en ce que la plate-forme (5) est issue d'extrusion en matière synthétique, polychlorure de vinyle par exemple.
- Marchepied selon l'une des revendications précédentes, caractérisé en ce que la plate-forme (5) est issue de bi-extrusion de deux matières synthétiques, avec des bandes de gomme souple adhérentes sur la face supérieure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03290122A EP1439280A1 (fr) | 2003-01-17 | 2003-01-17 | Marchepied à biellette ressort de plate-forme |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03290122A EP1439280A1 (fr) | 2003-01-17 | 2003-01-17 | Marchepied à biellette ressort de plate-forme |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1439280A1 true EP1439280A1 (fr) | 2004-07-21 |
Family
ID=32524263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03290122A Withdrawn EP1439280A1 (fr) | 2003-01-17 | 2003-01-17 | Marchepied à biellette ressort de plate-forme |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1439280A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1679423A1 (fr) * | 2004-12-24 | 2006-07-12 | Hymer-Leichtmetallbau GmbH & Co. KG | Échelle double avec plate-forme repliable |
CN102162331A (zh) * | 2010-02-12 | 2011-08-24 | 海罗-工厂鲁道夫勒有限及两合公司 | 梯子、尤其是阶梯立式梯子或折叠梯凳 |
US20160017658A1 (en) * | 2007-01-26 | 2016-01-21 | Werner Co. | Step Stool and Method |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2263369A1 (en) * | 1974-03-07 | 1975-10-03 | Ducros Georges | Step ladder with platform below hinge - has perforated and corrugated platform held horizontally by safety spring latch |
DE8203532U1 (de) * | 1982-02-10 | 1982-07-15 | Krause-Werk Gmbh & Co Kg, 6320 Alsfeld | Klappleiter |
FR2763357A1 (fr) * | 1996-09-17 | 1998-11-20 | Tubesca | Systeme de securite de positionnement lateral pour escabeau, marchepied et dispositif a plate-forme surelevee analogue |
-
2003
- 2003-01-17 EP EP03290122A patent/EP1439280A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2263369A1 (en) * | 1974-03-07 | 1975-10-03 | Ducros Georges | Step ladder with platform below hinge - has perforated and corrugated platform held horizontally by safety spring latch |
DE8203532U1 (de) * | 1982-02-10 | 1982-07-15 | Krause-Werk Gmbh & Co Kg, 6320 Alsfeld | Klappleiter |
FR2763357A1 (fr) * | 1996-09-17 | 1998-11-20 | Tubesca | Systeme de securite de positionnement lateral pour escabeau, marchepied et dispositif a plate-forme surelevee analogue |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1679423A1 (fr) * | 2004-12-24 | 2006-07-12 | Hymer-Leichtmetallbau GmbH & Co. KG | Échelle double avec plate-forme repliable |
DE102004062567A1 (de) * | 2004-12-24 | 2006-07-13 | Hymer-Leichtmetallbau Gmbh & Co. Kg | Steh-Leiter mit Sicherheitsbrücke |
DE102004062567B4 (de) * | 2004-12-24 | 2008-03-27 | Hymer-Leichtmetallbau Gmbh & Co. Kg | Steh-Leiter mit Sicherheitsbrücke |
US20160017658A1 (en) * | 2007-01-26 | 2016-01-21 | Werner Co. | Step Stool and Method |
CN102162331A (zh) * | 2010-02-12 | 2011-08-24 | 海罗-工厂鲁道夫勒有限及两合公司 | 梯子、尤其是阶梯立式梯子或折叠梯凳 |
CN102162331B (zh) * | 2010-02-12 | 2015-11-18 | 海罗-工厂鲁道夫勒有限及两合公司 | 梯子 |
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