FR2536731A1

FR2536731A1 - Lifting stair treads making it possible to go up and come down by moving as if on the level.

Info

Publication number: FR2536731A1
Application number: FR8220023A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1982-11-25
Filing date: 1982-11-25
Publication date: 1984-06-01

Abstract

Lifting stair treads, with controls sensitive to the pressure of the foot, alternatively putting themselves to the level of the following ones, making it possible for physically disabled people to negotiate stairs with as much ease as if the ground were flat. The object of the invention is installed rapidly and without major works in all types of traditional stairs, which makes it possible to use them even for only the duration of convalescence for example.

Description

ISPSITIF DESTINE A ENTRAINER
UN ELEMENT LONGIFORME
L'invention concerne un dispositif destiné à entrainer un élément longiforme tel que fil, câble, tube, fer ira béton etc:.., en particulier mais non exclusivement des râbles de précontrainte.ISPSITIVE FOR TRAINING
A LONGIFORM ELEMENT
The invention relates to a device intended to drive an elongated element such as wire, cable, tube, iron will go concrete etc: ..., in particular but not exclusively of the prestressing saddles.

Le dispositif selon l'invention est du type comprenant un train 'de galets situés en regard deux à deux de façon à entrainer le câble par friction. Ces galets sont en traines par des engrenages et un système de pression élastique sollicite les galets supérieurs en direction des galets inférieurs en vue de fournir la pression nécessaire sur le câble. The device according to the invention is of the type comprising a train of rollers located opposite two by two so as to drive the cable by friction. These rollers are trailed by gears and an elastic pressure system urges the upper rollers towards the lower rollers in order to provide the necessary pressure on the cable.

On Feut voir le schéma de principe d'un tel dispositif à la figure 1 du brevet français 1 4-60 821. De façon classique, les galets et les engrenages sont montés sur un bâti formé de deux plaques qui soutiennent les axes desdits galets et engrenages au moyen de paliers, de part et d'autre de ceux-ci. We should see the schematic diagram of such a device in Figure 1 of French patent 1 4-60 821. Conventionally, the rollers and the gears are mounted on a frame formed by two plates which support the axes of said rollers and gears by means of bearings on either side thereof.

Dans ces conditions, l'application d'une pression élastique nécessite pour chaque galet la présence de deux organes elastiques, à raison d'un par palier, en vue d'éviter l'introduction d'efforts non perpendiculaires à l'axe. Under these conditions, the application of an elastic pressure requires for each roller the presence of two elastic members, at the rate of one per bearing, in order to avoid the introduction of forces not perpendicular to the axis.

Cette nécessité implique une complexité structurelle accrue et surtout des réglages longs et difficiles afin d'équilibrer parfaitement les deux organes élastiques. This necessity implies increased structural complexity and above all long and difficult adjustments in order to perfectly balance the two elastic members.

C'est d'ailleurs pour essayer de pallier ces difficultés que le brevet français 2 348 138 propose de supprimer les organes élastiques et de disposer les galets suivant une ligne oblique par rapport à la ligne de défilement de l'élément longiforme de façon à provoquer une déformation élastique dudit élément entre les galets. It is moreover to try to overcome these difficulties that French patent 2,348,138 proposes to remove the elastic members and to arrange the rollers along an oblique line with respect to the line of travel of the elongate element so as to cause elastic deformation of said element between the rollers.

Cette déformation assure bien la pression' néces- saire pour que l'élément longiforme ne glisse pas sur les galets. Mais cette méthode présente le très grave défaut d'absorber une proportion notable d'énergie pour assurer la déformation précitée. This deformation ensures the necessary pressure so that the elongate element does not slide on the rollers. However, this method has the very serious defect of absorbing a significant proportion of energy to ensure the abovementioned deformation.

plan de la marche pendant sa montée pour éviter de coincer les orteils des usagers sous le nez des marches situées immédiatement au dessus. Le plan de la marche est maintenu à l'horizontale durant toutes les positions; par deux jeux de biellettes en ciseaux, suivant la fig. 4.plan of the walk during its ascent to avoid trapping the toes of the users under the noses of the steps located immediately above. The walking plan is kept horizontal during all positions; by two sets of scissor links, according to fig. 4.

- suivant la fig. 5, les ciseaux sont reliés chacuns à une barre travaillant en torsion et servant d'axe en même temps ce qui produit que toute différence de hauteur est transmise de gauche à droite et inversement, de façon à ce que le plan mobile de la marche reste parallèle à sa base.- according to fig. 5, the scissors are each connected to a bar working in torsion and serving as an axis at the same time which produces that any difference in height is transmitted from left to right and vice versa, so that the moving plane of the step remains parallel to its base.

Une butée de hauteur, règlable, permet l'adaptation rigoureuse du niveau haut de l'une avec le niveau bas de la suivante. An adjustable height stop allows rigorous adaptation of the high level of one with the low level of the next.

- suivant la figure 6, les bords avant et arrière des marches.- According to Figure 6, the front and rear edges of the steps.

sont arrondis pour éviter tout accrochage possible du à un effet de seuil.are rounded to avoid possible snagging due to a threshold effect.

- suivant le dessin de la fig. 7 on voit la vue en plan d'une marche rectangulaire pour escalier droit.- according to the drawing in fig. 7 we see the plan view of a rectangular step for a straight staircase.

- suivant la fig. 8 , on voit la vue en plan d'une marche de forme cônique destinée à l'équipement d'un escalier tournant.- according to fig. 8, we see the plan view of a conical step intended for equipping a spiral staircase.

- la figure 9 montre l'alimentation en énergie pratiquée sur la tranche des marches qui sont retournables. Ce retournement permettant d'équiper avec le même modèle cônique les escaliers tournants aussi bien à gauche qu'à droite.- Figure 9 shows the energy supply on the edge of the steps which are reversible. This reversal making it possible to equip the same conical model with the revolving stairs both on the left and on the right.

flans la cas d'escaliers très spacieux, un bord seulement peut être équipé de marches élévatrices, l'autre partie restant dans son état original. In the case of very spacious staircases, only one edge can be fitted with lifting steps, the other part remaining in its original state.

Si plusieurs usagers utilisent l'escalier, des boutons de commandes situés en haut et en bas permettent de mettre en service, ou hors service l'escalier, soit placer celui-ci dans la position de départ convenable. If several users use the staircase, control buttons located at the top and bottom allow to activate or deactivate the staircase, either place it in the appropriate starting position.

L'ensemble du macanisme étant solidaire de la base, il est aisé de produire la partie supérieure à des dimensions hors standard pour répondre, dans certains cas, à des considérations d'esthétique. The whole of the macanism being integral with the base, it is easy to produce the upper part at non-standard dimensions to meet, in some cases, aesthetic considerations.

Claims

1t tt Jt Jf 1 - Elevating stair steps alternating with the following, allowing people who use them to operate only a horizontal movement from one step to another, much easier for people physically embarrassed, especially on the stairs and this both on the rise and the descent These, characterized by the fact that they are very flat, thus leaving the possibility of using the staircase in an ordinary way. On the other hand, the walking plan is kept horizontal throughout the ascent or descent course by a set of scissor links.

2 - Stair treads according to claim 1, characterized by an internal sensitive control actuating the movement by a pressure of the foot similar to walking flat.

3 - Stair treads according to claim 2, characterized in that a pressure of the foot in the bottom of the step controls the climb.

4 - Stair treads according to claim 2, characterized in that a pressure of the foot towards the nose of the step controls the descent.

5 - Stair treads according to claim 3, characterized in that, in its upward movement, the bearing surface ds the step moves away in an oblique duknez from the next step.

6 - Stair treads according to claim 1, characterized in that the scissors are interconnected two by two by bars serving as axes and working in torsion to maintain the same height on both sides, whatever the load supported and its position on the bearing surface of the step.

7 - Stair treads according to claim 1, characterized in that its surface is rectangular for straight stairs.

8 - Stair treads according to claim 1, characterized in that its surface is trapezoidal for curved staircases.

9 - Stair treads according to claim 8, characterized in that the steps are reversible, in order to be able to equip both right and left turning staircases.

10 - Stair treads according to claim 9, characterized in that these reversible steps are supplied with energy by the edge.

11 - Stair treads according to claim 2, characterized in that if several users use the stairs at the same time, remote control buttons, located at the top and bottom will allow to activate or deactivate the installation.

12 - Stair steps according to claim 1, characterized in that an adjustable stop blocks each step in its high position at the right height relative to the next.

13 - Stair treads according to claim 12, characterized in that the front and rear edges of the upper plane of the treads are rounded in order to avoid any possible catching caused by a threshold effect if the height at the end of the stroke does not was not well settled.