WO2006114503A1 - Modular ladder element - Google Patents

Modular ladder element Download PDF

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Publication number
WO2006114503A1
WO2006114503A1 PCT/FR2006/000899 FR2006000899W WO2006114503A1 WO 2006114503 A1 WO2006114503 A1 WO 2006114503A1 FR 2006000899 W FR2006000899 W FR 2006000899W WO 2006114503 A1 WO2006114503 A1 WO 2006114503A1
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WO
WIPO (PCT)
Prior art keywords
tubular portion
ladder
male
upright
modular
Prior art date
Application number
PCT/FR2006/000899
Other languages
French (fr)
Inventor
Hervé GUERRY
Original Assignee
Societe Creastuce
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 Societe Creastuce filed Critical Societe Creastuce
Publication of WO2006114503A1 publication Critical patent/WO2006114503A1/en

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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
    • E06C1/24—Non-hinged free-standing ladders
    • E06C1/28—Non-hinged free-standing ladders multi-part
    • E06C1/30—Non-hinged free-standing ladders multi-part extensible, e.g. 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
    • E06C1/10—Sections fitted end to end
    • 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
    • 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
    • E06C7/083—Bracket type connection

Definitions

  • the present invention relates to a modular ladder element.
  • this type of ladder requires a large storage location, which is very disadvantageous for people living in apartments or without a garden or storage room.
  • the document EP 0 327323 relates to a scale made from H-shaped metal modular ladder elements.
  • the lateral branches of two adjacent elements having an open box structure are attached to each other by way of complementarity of shape. their ends, the locking being achieved by means of covering profiles, realizing a kind of sleeving.
  • the present invention therefore aims to remedy these drawbacks.
  • the technical problem underlying the invention is the realization of a ladder from scale elements sufficiently strong to support the weight of an individual, light enough to be easily manipulated, generating a low manufacturing cost and being easily mountable and removable.
  • the invention relates to a modular ladder element comprising two spaced parallel uprights and at least one cross member secured by its ends to said two uprights, characterized in that it is made of synthetic material in one piece and in that the at least one crossbeam and the uprights each consist of an open profile comprising a honeycomb structure, each upright being extended at one of its ends by a female tubular part, and at its other end by a male tubular part. intended to be engaged in the female tubular portion of an adjacent ladder element.
  • honeycomb structures in the profiles constituting the uprights and the cross member of each scale element makes these elements sufficiently resistant to support the weight of an individual while limiting the overconsumption of synthetic material. This further results in a limitation of the manufacturing cost of the elements according to the invention.
  • the outer surface of the male tubular portion of each upright is delimited by a frustoconical surface and the inner surface of the female tubular portion of each upright is delimited by a frustoconical surface of shape complementary to that of the outer surface of the male tubular portion. of each amount.
  • the frustoconical shape of the male and female parts facilitates demolding of the ladder elements as well as the assembly of two adjacent ladder elements because the section of the end of the male tubular part is smaller than the inlet section of the female tubular part.
  • the frustoconical shape of the male and female parts allows interlocking without play of two adjacent ladder elements, which improves the stability of the scale and therefore safety.
  • the male and female tubular portions of each upright comprise complementary fixing means.
  • the complementary fastening means are made by snapping.
  • the complementary fastening means comprise a tab formed in the male tubular portion of each upright, on which is managed an outwardly facing stud intended to engage in a hole of complementary shape. formed in the female tubular portion of each upright of an adjacent ladder element.
  • the ladder does not require additional elements at each connection between adjacent ladder elements to lock them, thereby reducing the cost of this ladder, as well as its weight and the risk of losing parts.
  • this type of locking ladder elements is simple, which allows a much faster assembly and disassembly of the scale, which makes this scale very convenient.
  • the inner surface of the male tubular portion of each upright comprises longitudinal reinforcing ribs.
  • the cross member comprises, on its face turned towards the male parts of the uprights, a reinforcing rib returning to each of the uprights.
  • the invention also relates to a modular scale comprising at least two ladder elements nested one inside the other.
  • the ladder comprises a non-slip element intended to be fitted around each male tubular part of the lower ladder element and a non-slip support element intended to be fitted into each female tubular part of the ladder element. superior.
  • the subject of the invention is also a stepladder comprising two series of at least two ladder elements nested one inside the other, the step ladder comprising an upper connecting piece comprising two inverted U-shaped elements each of whose branches is extended by a male tubular portion to be nested in the corresponding female tubular portion of each upper scale member.
  • Figure 1 is a perspective front view of a modular ladder element according to the invention.
  • Figure 2 is a rear view, in perspective.
  • Figure 3 is a rear view in plan.
  • Figure 4 is a perspective view of two assembled ladder elements whose amount is cut longitudinally.
  • Figure 5 is a perspective view of a modular scale consisting of scale elements according to the invention.
  • Figure 6 is a perspective view of a modular step ladder consisting of scale elements according to the invention.
  • Figures 1 to 4 show a modular scale element 2 of general H-shaped made of synthetic material and obtained by molding.
  • the modular ladder element 2 comprises two spaced parallel lateral uprights 3 and a central crossbar 4 secured at its ends to the inner faces of the two uprights 3.
  • the cross member 4 and the uprights 3 each consist of a C 5, 6 profile open towards the rear and comprising a honeycomb structure.
  • the honeycomb structure of the uprights 3 and of the crosspiece 4 consists of a longitudinal rib 7, 8 and a succession of transverse ribs 9, 10, all formed inside the section 5, 6 corresponding, and extending throughout its thickness, from its rear wall to substantially its opening.
  • Each section 6 is extended at one of its ends by a female tubular portion 11 of the same external dimensions and of substantially rectangular section, and at its other end by a male tubular portion 12 of smaller external dimensions and also of substantially rectangular section .
  • the male tubular portion 12 of each upright 3 is intended to be engaged in the female tubular portion of an adjacent ladder element.
  • the outer surface of the male tubular portion 12 of each upright 3 is delimited by a frustoconical surface and the inner surface of the female tubular portion 11 of each upright 3 is delimited by a frustoconical surface of shape complementary to that the outer surface of the part male tubular 12 of each amount 3.
  • the male 12 and female tubular portions 11 of each upright 3 comprise complementary snap-fastening means.
  • the male tubular portion 12 of each upright 3 comprises on its rear face, two longitudinal grooves 13, 14 extending from the end of the male tubular portion 12 over substantially half of its length.
  • the two longitudinal grooves 13, 14 thus delimit a tab 15 elastically deformable on the rear face of the male tubular portion 12 of each upright 3.
  • Each tongue 15 has on its outer face and near its free end, a pin 16.
  • the female tubular portion 11 of each upright 3 comprises on its rear face, substantially at the upper end of the profile 6, a hole 17 of complementary shape to that of the stud 16 formed on the male tubular portion 12 of each upright 3, in which is intended to engage the stud 16 of an adjacent ladder element.
  • the inner surface of the male tubular portion 12 of each upright 3 comprises longitudinal stiffening ribs 18.
  • the cross member 4 comprises on its underside, substantially at the opening of the profile 5, a reinforcing rib 19 extending downwardly and returning to the inner face of each of the uprights 3, at the opening of the profiles 6.
  • Figure 4 shows two modular ladder elements 2, 2 'nested one inside the other.
  • the male tubular portions 12 of the modular ladder element 2 are nested in the female tubular portions 11 of the modular ladder element 2 '.
  • the pin 16 of each male tubular portion 12 cooperates with the hole 17 formed in each female tubular portion 11 to ensure a locking of the two scale elements.
  • the external dimensions of the profiles 6 of the ladder element 2 correspond to the external dimensions of the female tubular portions 11 of the ladder element 2' in order to obtain a substantially smooth outer joining surface.
  • each pin 16 is formed on a tongue 15 which can fold inwards during the interlocking of the female and male tubular portions 11, 12,
  • the tongue 15 folds inwardly of the ladder member 2 until the stud 16 is facing corresponding hole 17. At this moment, the tongue 15 returns to its original shape and the stud 16 engages in the hole 17.
  • Figure 5 shows a scale 22 consisting of six scale elements, including four intermediate scale elements, an upper scale element and a lower scale element.
  • FIG. 6 shows a stepladder 25 comprising two series of ladder elements 26, 27.
  • Each series 26, 27 comprises three ladder elements, including an intermediate ladder element, an upper ladder element and a ladder element. lower scale.
  • An anti-skid member 23 is fitted around each male tubular portion 12 of the lower ladder member of each set of ladder members 26, 27.
  • the two series of ladder elements 26, 27 are connected to each other by an upper connecting piece 28.
  • the upper connecting piece 28 comprises a platform 29 of generally rectangular shape and two inverted U-shaped elements 30 whose inner face is integral, substantially at the end of each branch of the U-shaped elements, of the outer face. on two opposite sides of the platform 29.
  • each U-shaped member is extended by a male tubular portion, complementary in shape to that of the female tubular portions 12 of each upper ladder member, nested in the corresponding female tubular portions 12 of each upper ladder member. It goes without saying that the invention is not limited to the embodiment described above by way of example, but that it encompasses all variants.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ladders (AREA)

Abstract

The invention relates to a modular ladder element (2) comprising two spaced-apart parallel posts (3) and at least one crossbar (4), the ends of which are solidly connected to the two posts (3). The ladder element consists of a single piece which is made from a synthetic material and the at least one crossbar (4) and the posts (3) each comprise an open section (5, 6) with a honeycomb structure. According to the invention, one end of each post (3) extends into a female tubular part (11), while the other end thereof extends into a male tubular part (12) which is intended to be inserted into the female tubular part (11) of an adjacent ladder element (2').

Description

Elément d'échelle modulaire Modular ladder element
La présente invention concerne un élément d'échelle modulaire.The present invention relates to a modular ladder element.
Les échelles existantes sont généralement constituées de deux montants reliés entre eux par des barreaux fixés à intervalles réguliers, elles sont souvent de grandes tailles et réalisées en bois ou en un alliage métallique notamment à base d'aluminium. Il en résulte qu'elles sont lourdes et encombrantes.Existing ladders are usually made of two amounts interconnected by bars fixed at regular intervals, they are often large and made of wood or a metal alloy including aluminum. As a result, they are heavy and bulky.
Ce qui rend ces échelles peu maniables, en particulier pour les personnes de petit gabarit, et difficilement transportables.What makes these ladders unmanageable, especially for people of small size, and difficult to transport.
De plus, ce type d'échelle requière un emplacement de rangement important, ce qui est très désavantageux pour les personnes habitant en appartement ou ne possédant pas de jardin ou un local de rangement.In addition, this type of ladder requires a large storage location, which is very disadvantageous for people living in apartments or without a garden or storage room.
Pour pallier ce problème d'encombrement, il existe des échelles réglables en hauteur. H est donc possible de gérer la taille de ces échelles en fonction des travaux à effectuer, ce qui permet en partie d'améliorer les conditions d'utilisations de ces échelles et également de faciliter leur rangement.To overcome this problem of space, there are scales adjustable in height. It is therefore possible to manage the size of these scales according to the work to be done, which partly makes it possible to improve the conditions of use of these scales and also to facilitate their storage.
Cependant, le réglage en hauteur de ces échelles est limité et de plus, ce type d'échelle reste toujours d'un poids élevé du fart qu'elles sont généralement de grandes tailles ainsi que métalliques ou en bois. Ce choix de matériaux pour réaliser ces échelles est nécessaire pour obtenir une résistance mécanique suffisante de l'échelle afin de permettre à un large publique de les utiliser.However, the height adjustment of these ladders is limited and moreover, this type of ladder always remains of a high weight of fart that they are generally of large sizes as well as metal or wood. This choice of materials to achieve these scales is necessary to obtain sufficient mechanical strength of the scale to allow a wide public to use them.
Le document EP 0 327323 concerne une échelle réalisée à partir d'éléments d'échelle modulaire métalliques en forme de H. Les branches latérales de deux éléments adjacents présentant une structure de caisson ouvert sont accrochées l'une à l'autre par complémentarité de forme de leurs extrémités, le verrouillage étant réalisé par l'intermédiaire de profilés de recouvrement, réalisant une sorte de manchonnage.The document EP 0 327323 relates to a scale made from H-shaped metal modular ladder elements. The lateral branches of two adjacent elements having an open box structure are attached to each other by way of complementarity of shape. their ends, the locking being achieved by means of covering profiles, realizing a kind of sleeving.
L'utilisation d'éléments d'échelle identiques afin de constituer une échelle permet de faciliter le transport de l'échelle, de gérer parfaitement la longueur finale de l'échelle et donc d'améliorer les conditions d'utilisation de l'échelle. L'utilisation de tels éléments d'échelle permet également de faciliter le rangement de l'échelle du fait que chaque élément ne nécessite pas un espace de rangement important. Cependant, l'échelle décrite dans ce document présente l'inconvénient de nécessiter un nombre important de pièces, puisque, outre les éléments en H, il faut prévoir des éléments de manchonnage au niveau de chaque raccord entre deux branches de H, ce qui augmente le coût de cette échelle, ainsi que son poids et le risque de perte de pièces.The use of identical scale elements to constitute a scale makes it easier to transport the ladder, to manage perfectly the final length of the ladder and thus to improve the conditions of use of the ladder. The use of such scale elements also makes it easy to organize the ladder because each element does not require a large storage space. However, the scale described in this document has the disadvantage of requiring a large number of parts, since, besides the H elements, it is necessary to provide sleeving elements at each connection between two branches of H, which increases the cost of this scale, as well as its weight and the risk of loss of parts.
De plus, l'utilisation d'éléments de manchonnage, au niveau de chaque raccord entre deux éléments adjacents, allonge le temps de montage et de démontage de l'échelle, ce qui rend cette échelle peu pratique.In addition, the use of sleeving elements, at each connection between two adjacent elements, lengthens the time of assembly and disassembly of the scale, which makes this scale impractical.
La présence d'éléments de manchonnage constitue un facteur d'insécurité, car une mise en place défectueuse d'un tel manchon peut causer un accident consécutif à une désolidarisation de deux éléments d'échelle. Par ailleurs, l'échelle étant constituée d'éléments métalliques, le poids final de l'échelle restent donc d'un poids élevé.The presence of sleeves is a factor of insecurity, because a faulty installation of such a sleeve can cause an accident following a separation of two scale elements. Moreover, since the scale consists of metallic elements, the final weight of the scale therefore remains of a high weight.
La présente invention vise donc à remédier à ces inconvénients.The present invention therefore aims to remedy these drawbacks.
Le problème technique à la base de l'invention est la réalisation d'une échelle à partir d'éléments d'échelle suffisamment résistants pour supporter le poids d'un individu, suffisamment légers pour être facilement manipulables, engendrant un coût de fabrication faible et étant facilement montables et démontables.The technical problem underlying the invention is the realization of a ladder from scale elements sufficiently strong to support the weight of an individual, light enough to be easily manipulated, generating a low manufacturing cost and being easily mountable and removable.
A cet effet, l'invention concerne un élément d'échelle modulaire comprenant deux montants parallèles espacés et au moins une traverse solidaire par ses extrémités desdits deux montants, caractérisé en ce qu'il est réalisé en matière synthétique en une seul pièce et en ce que l'au moins une traverse et les montants sont constitués chacun d'un profilé ouvert comprenant une structure alvéolaire, chaque montant étant prolongé à l'une de ses extrémités par une partie tubulaire femelle, et à son autre extrémité par une partie tubulaire mâle destinée à être engagée dans la partie tubulaire femelle d'un élément d'échelle adjacent.To this end, the invention relates to a modular ladder element comprising two spaced parallel uprights and at least one cross member secured by its ends to said two uprights, characterized in that it is made of synthetic material in one piece and in that the at least one crossbeam and the uprights each consist of an open profile comprising a honeycomb structure, each upright being extended at one of its ends by a female tubular part, and at its other end by a male tubular part. intended to be engaged in the female tubular portion of an adjacent ladder element.
De ce fait, il est possible d'obtenir, en engageant plusieurs éléments d'échelle les uns dans les autres, une échelle modulable en hauteur.Therefore, it is possible to obtain, by engaging several scale elements in each other, a scale adjustable in height.
L'utilisation de matière synthétique pour réaliser les éléments d'échelle permet d'obtenir des éléments de faible poids et donc facilement manipulables. De plus, l'utilisation de matière synthétique permet de réaliser les éléments par moulage et donc d'obtenir des coûts de fabrication très faibles.The use of synthetic material to make the scale elements provides elements of low weight and therefore easy to handle. In addition, the use of synthetic material makes it possible to produce the elements by molding and thus to obtain very low manufacturing costs.
En outre, le fait que les éléments soient en matière synthétique permet d'obtenir une échelle non conductrice électriquement, ce qui présente un avantage dans certaines applications. En effet, des normes imposent aux électriciens d'avoir des échelles réalisées en matériau non conducteur. Il faut aujourd'hui recourir soit à des échelles en fibre de verre qui sont très chères, soit à des échelles en bois qui sont lourdes et peu pratiques.In addition, the fact that the elements are made of synthetic material makes it possible to obtain an electrically nonconductive scale, which is an advantage in certain applications. Indeed, standards require electricians to have ladders made of non-conductive material. Nowadays it is necessary to resort either to scales made of fiberglass which are very expensive, or to wooden ladders which are heavy and impractical.
Par ailleurs, la présence de structures alvéolaires dans les profilés constituant les montants et la traverse de chaque élément d'échelle rend ces éléments suffisamment résistants pour supporter le poids d'un individu tout en limitant la surconsommation de matière synthétique. Il en résulte encore une limitation du coût de fabrication des éléments selon l'invention.Furthermore, the presence of honeycomb structures in the profiles constituting the uprights and the cross member of each scale element makes these elements sufficiently resistant to support the weight of an individual while limiting the overconsumption of synthetic material. This further results in a limitation of the manufacturing cost of the elements according to the invention.
Avantageusement, la surface extérieure de la partie tubulaire mâle de chaque montant est délimitée par une surface tronconique et la surface intérieure de la partie tubulaire femelle de chaque montant est délimitée par une surface tronconique de forme complémentaire de celle la surface extérieure de la partie tubulaire mâle de chaque montant.Advantageously, the outer surface of the male tubular portion of each upright is delimited by a frustoconical surface and the inner surface of the female tubular portion of each upright is delimited by a frustoconical surface of shape complementary to that of the outer surface of the male tubular portion. of each amount.
La forme tronconique des parties mâle et femelle facilite le démoulage des éléments d'échelle ainsi que l'assemblage de deux éléments d'échelle adjacents car la section de l'extrémité de la partie tubulaire mâle est inférieure à la section d'entrée de la partie tubulaire femelle.The frustoconical shape of the male and female parts facilitates demolding of the ladder elements as well as the assembly of two adjacent ladder elements because the section of the end of the male tubular part is smaller than the inlet section of the female tubular part.
De plus, la forme tronconique des parties mâle et femelle permet un emboîtement sans jeu de deux éléments d'échelle adjacents, ce qui améliore la stabilité de l'échelle et donc la sécurité.In addition, the frustoconical shape of the male and female parts allows interlocking without play of two adjacent ladder elements, which improves the stability of the scale and therefore safety.
Dans un mode de réalisation de l'invention, les parties tubulaires mâle et femelle de chaque montant comprennent des moyens de fixation complémentaires.In one embodiment of the invention, the male and female tubular portions of each upright comprise complementary fixing means.
Avantageusement, les moyens de fixation complémentaires sont réalisés par encliquetage.Advantageously, the complementary fastening means are made by snapping.
Dans un mode de réalisation de l'invention, tes moyens de fixation complémentaires comportent une languette ménagée dans la partie tubulaire mâle de chaque montant, sur laquelle est managé un téton tourné vers l'extérieur destiné à s'engager dans un trou de forme complémentaire ménagé dans la partie tubulaire femelle de chaque montant d'un élément d'échelle adjacent.In one embodiment of the invention, the complementary fastening means comprise a tab formed in the male tubular portion of each upright, on which is managed an outwardly facing stud intended to engage in a hole of complementary shape. formed in the female tubular portion of each upright of an adjacent ladder element.
De ce fait, l'échelle ne nécessite pas d'éléments supplémentaires au niveau de chaque raccord entre des éléments d'échelle adjacents pour les verrouiller, ce qui diminue le coût de cette échelle, ainsi que son poids et le risque de perte de pièces. De plus, ce type de verrouillage des éléments d'échelle est simple, ce qui permet un montage et un démontage de l'échelle beaucoup plus rapide, ce qui rend donc cette échelle très pratique.As a result, the ladder does not require additional elements at each connection between adjacent ladder elements to lock them, thereby reducing the cost of this ladder, as well as its weight and the risk of losing parts. . In addition, this type of locking ladder elements is simple, which allows a much faster assembly and disassembly of the scale, which makes this scale very convenient.
Avantageusement, la surface intérieure de la partie tubulaire mâle de chaque montant comprend des nervures longitudinales de renforcement.Advantageously, the inner surface of the male tubular portion of each upright comprises longitudinal reinforcing ribs.
Ainsi, la résistance mécanique de chaque élément modulaire est encore améliorée.Thus, the mechanical strength of each modular element is further improved.
Dans un mode de réalisation de l'invention, la traverse comprend, sur sa face tournée du côté des parties mâles des montants, une nervure de renforcement revenant sur chacun des montants.In one embodiment of the invention, the cross member comprises, on its face turned towards the male parts of the uprights, a reinforcing rib returning to each of the uprights.
L'invention a aussi pour objet une échelle modulaire comprenant au moins deux éléments d'échelle emboîtés l'un dans l'autre.The invention also relates to a modular scale comprising at least two ladder elements nested one inside the other.
Avantageusement, l'échelle comprend un élément antidérapant destiné à être emboîté autour de chaque partie tubulaire mâle de l'élément d'échelle inférieur et un élément d'appui antidérapant destiné à être emboîté dans chaque partie tubulaire femelle de l'élément d'échelle supérieur.Advantageously, the ladder comprises a non-slip element intended to be fitted around each male tubular part of the lower ladder element and a non-slip support element intended to be fitted into each female tubular part of the ladder element. superior.
L'invention a également pour objet un escabeau comprenant deux séries d'au moins deux éléments d'échelle emboîtés l'un dans l'autre, l'escabeau comprenant une pièce supérieure de liaison comportant deux éléments en U inversé dont chacune des branches est prolongée par une partie tubulaire mâle destinée à être emboîtée dans la partie tubulaire femelle correspondante de chaque élément d'échelle supérieur.The subject of the invention is also a stepladder comprising two series of at least two ladder elements nested one inside the other, the step ladder comprising an upper connecting piece comprising two inverted U-shaped elements each of whose branches is extended by a male tubular portion to be nested in the corresponding female tubular portion of each upper scale member.
De toute façon l'invention sera bien comprise à l'aide de la description qui suit, en référence au dessin schématique indexé représentant, à titre d'exemples non limitatifs, une forme d'exécution de cet élément d'échelle modulaire.In any case the invention will be better understood with the aid of the description which follows, with reference to the indexed schematic drawing showing, by way of nonlimiting examples, an embodiment of this modular ladder element.
Figure 1 est une vue de face en perspective d'un élément d'échelle modulaire selon l'invention.Figure 1 is a perspective front view of a modular ladder element according to the invention.
Figure 2 en est une vue arrière, en perspective. Figure 3 en est une vue arrière, en plan.Figure 2 is a rear view, in perspective. Figure 3 is a rear view in plan.
Figure 4 est une vue en perspective de deux éléments d'échelle assemblés dont un montant est coupé longitudinalement.Figure 4 is a perspective view of two assembled ladder elements whose amount is cut longitudinally.
Figure 5 est une vue en perspective d'une échelle modulaire constituée d'éléments d'échelle selon l'invention. Figure 6 est une vue en perspective d'un escabeau modulaire constitué d'éléments d'échelle selon l'invention. Les figures 1 à 4 représentent un élément d'échelle modulaire 2 de forme générale en H réalisé en matière synthétique et obtenu par moulage.Figure 5 is a perspective view of a modular scale consisting of scale elements according to the invention. Figure 6 is a perspective view of a modular step ladder consisting of scale elements according to the invention. Figures 1 to 4 show a modular scale element 2 of general H-shaped made of synthetic material and obtained by molding.
L'élément d'échelle modulaire 2 comprend deux montants latéraux parallèles espacés 3 et une traverse centrale 4 solidaire par ses extrémités des faces intérieures des deux montants 3.The modular ladder element 2 comprises two spaced parallel lateral uprights 3 and a central crossbar 4 secured at its ends to the inner faces of the two uprights 3.
Comme représenté plus particulièrement sur la figure 3, la traverse 4 et les montants 3 sont chacun constitués d'un profilé en C 5, 6 ouvert vers l'arrière et comprenant une structure alvéolaire.As shown more particularly in FIG. 3, the cross member 4 and the uprights 3 each consist of a C 5, 6 profile open towards the rear and comprising a honeycomb structure.
La structure alvéolaire des montants 3 et de la traverse 4 est constituée d'une nervure longitudinale 7, 8 et d'une succession de nervures transversales 9, 10, toutes ménagées à l'intérieure du profilé 5, 6 correspondant, et s'étendant sur toute son épaisseur, de sa paroi arrière jusqu'à sensiblement son ouverture.The honeycomb structure of the uprights 3 and of the crosspiece 4 consists of a longitudinal rib 7, 8 and a succession of transverse ribs 9, 10, all formed inside the section 5, 6 corresponding, and extending throughout its thickness, from its rear wall to substantially its opening.
Chaque profilé 6 est prolongé à l'une de ses extrémités par une partie tubulaire femelle 11 de mêmes dimensions extérieures et de section sensiblement rectangulaire, et à son autre extrémité par une partie tubulaire mâle 12 de dimensions extérieures plus faibles et également de section sensiblement rectangulaire. La partie tubulaire mâle 12 de chaque montant 3 est destinée à être engagée dans la partie tubulaire femelle d'un élément d'échelle adjacent.Each section 6 is extended at one of its ends by a female tubular portion 11 of the same external dimensions and of substantially rectangular section, and at its other end by a male tubular portion 12 of smaller external dimensions and also of substantially rectangular section . The male tubular portion 12 of each upright 3 is intended to be engaged in the female tubular portion of an adjacent ladder element.
La surface extérieure de la partie tubulaire mâle 12 de chaque montant 3 est délimitée par une surface tronconique et la surface intérieure de la partie tubulaire femelle 11 de chaque montant 3 est délimitée par une surface tronconique de forme complémentaire de celle la surface extérieure de la partie tubulaire mâle 12 de chaque montant 3.The outer surface of the male tubular portion 12 of each upright 3 is delimited by a frustoconical surface and the inner surface of the female tubular portion 11 of each upright 3 is delimited by a frustoconical surface of shape complementary to that the outer surface of the part male tubular 12 of each amount 3.
Les parties tubulaires mâle 12 et femelle 11 de chaque montant 3 comprennent des moyens de fixation complémentaires par encliquetage.The male 12 and female tubular portions 11 of each upright 3 comprise complementary snap-fastening means.
Ainsi, la partie tubulaire mâle 12 de chaque montant 3 comprend sur sa face arrière, deux rainures longitudinales 13, 14 s'étendant de l'extrémité de la partie tubulaire mâle 12 sur sensiblement la moitié de sa longueur. Les deux rainures longitudinales 13, 14 délimitent ainsi une languette 15 déformable élastiquement sur la face arrière de la partie tubulaire mâle 12 de chaque montant 3. Chaque languette 15 comporte sur sa face extérieure et à proximité de son extrémité libre, un téton 16. La partie tubulaire femelle 11 de chaque montant 3 comprend sur sa face arrière, sensiblement au niveau de l'extrémité supérieure du profilé 6, un trou 17, de forme complémentaire de celle du téton 16 ménagé sur la partie tubulaire mâle 12 de chaque montant 3, dans lequel est destiné à s'engager le téton 16 d'un élément d'échelle adjacent.Thus, the male tubular portion 12 of each upright 3 comprises on its rear face, two longitudinal grooves 13, 14 extending from the end of the male tubular portion 12 over substantially half of its length. The two longitudinal grooves 13, 14 thus delimit a tab 15 elastically deformable on the rear face of the male tubular portion 12 of each upright 3. Each tongue 15 has on its outer face and near its free end, a pin 16. The female tubular portion 11 of each upright 3 comprises on its rear face, substantially at the upper end of the profile 6, a hole 17 of complementary shape to that of the stud 16 formed on the male tubular portion 12 of each upright 3, in which is intended to engage the stud 16 of an adjacent ladder element.
Comme représenté sur la figure 4, la surface intérieure de la partie tubulaire mâle 12 de chaque montant 3 comprend des nervures longitudinales de renforcement 18.As shown in FIG. 4, the inner surface of the male tubular portion 12 of each upright 3 comprises longitudinal stiffening ribs 18.
Comme représenté plus particulièrement à la figure 2, la traverse 4 comprend sur sa face inférieure, sensiblement au niveau de l'ouverture du profilé 5, une nervure de renforcement 19 s'étendant vers Ie bas et revenant sur la face intérieure de chacun des montants 3, au niveau de l'ouverture des profilés 6.As shown more particularly in Figure 2, the cross member 4 comprises on its underside, substantially at the opening of the profile 5, a reinforcing rib 19 extending downwardly and returning to the inner face of each of the uprights 3, at the opening of the profiles 6.
La figure 4 représente deux éléments d'échelle modulaire 2, 2' emboîtés l'un dans l'autre.Figure 4 shows two modular ladder elements 2, 2 'nested one inside the other.
Sur cette figure, les parties tubulaires mâles 12 de l'élément d'échelle modulaire 2 sont emboîtées dans les parties tubulaires femelles 11 de l'élément d'échelle modulaire 2'. En position emboîtée des parties tubulaires mâles 12 et femelles 11, le téton 16 de chaque partie tubulaire mâle 12 coopère avec le trou 17 ménagé dans chaque partie tubulaire femelle 11 afin d'assurer un verrouillage des deux éléments d'échelle. En position emboîtée des deux éléments d'échelle 2, 2', les dimensions extérieures des profilés 6 de l'élément d'échelle 2 correspondent aux dimensions extérieures des parties tubulaires femelles 11 de l'élément d'échelle 2' afin d'obtenir une surface extérieure de jonction sensiblement lisse.In this figure, the male tubular portions 12 of the modular ladder element 2 are nested in the female tubular portions 11 of the modular ladder element 2 '. In the nested position of the male tubular portions 12 and 11, the pin 16 of each male tubular portion 12 cooperates with the hole 17 formed in each female tubular portion 11 to ensure a locking of the two scale elements. In the nested position of the two ladder elements 2, 2 ', the external dimensions of the profiles 6 of the ladder element 2 correspond to the external dimensions of the female tubular portions 11 of the ladder element 2' in order to obtain a substantially smooth outer joining surface.
L'emboîtement de deux éléments d'échelle est facilité du fait que chaque téton 16 est ménagé sur une languette 15 pouvant se replier vers l'intérieur durant l'emboîtement des parties tubulaires femelle et mâle 11, 12,The interlocking of two scale elements is facilitated by the fact that each pin 16 is formed on a tongue 15 which can fold inwards during the interlocking of the female and male tubular portions 11, 12,
Ainsi, lors d'un emboîtement d'une partie tubulaire mâle 12 dans une partie tubulaire femelle 11, la languette 15 se replie vers l'intérieur de l'élément d'échelle 2 jusqu'à ce que le téton 16 se trouve en regard du trou 17 correspondant. A ce moment, la languette 15 reprend sa forme initiale et le téton 16 s'engage dans le trou 17.Thus, during an interlocking of a male tubular portion 12 in a female tubular portion 11, the tongue 15 folds inwardly of the ladder member 2 until the stud 16 is facing corresponding hole 17. At this moment, the tongue 15 returns to its original shape and the stud 16 engages in the hole 17.
Pour déverrouiller deux éléments d'échelle 2, 2', il suffit d'exercer une légère pression sur chaque téton 16 tout en écartant les deux éléments d'échelle 2, 2' l'un de l'autre. La figure 5 représente une échelle 22 constituée de six éléments d'échelle, dont quatre éléments d'échelle intermédiaires, un élément d'échelle supérieur et un élément d'échelle inférieur.To unlock two scale elements 2, 2 ', it is sufficient to exert a slight pressure on each pin 16 while spacing the two scale elements 2, 2' from each other. Figure 5 shows a scale 22 consisting of six scale elements, including four intermediate scale elements, an upper scale element and a lower scale element.
Un élément antidérapant 23, destiné à reposer sur le sol et comportant une partie tubulaire femelle de forme complémentaire de celle de chaque partie tubulaire mâle 12 de l'élément d'échelle inférieur, est emboîté autour de chaque partie tubulaire mâle 12 de l'élément d'échelle inférieur et un élément d'appui antidérapant 24, comportant une partie tubulaire mâle de forme complémentaire de celle de chaque partie tubulaire femelle 11 de l'élément d'échelle supérieur, est emboîté dans chaque partie tubulaire femelleAn anti-skid element 23, intended to rest on the ground and comprising a female tubular part of shape complementary to that of each male tubular portion 12 of the lower ladder element, is fitted around each male tubular portion 12 of the element of lower scale and a non-slip bearing element 24, comprising a male tubular portion of complementary shape to that of each female tubular portion 11 of the upper ladder element, is fitted into each female tubular portion
11 de l'élément d'échelle supérieur.11 of the upper scale element.
Le figure 6 représente un escabeau 25 comprenant deux séries d'éléments d'échelle 26, 27. Chaque série 26, 27 comprend trois éléments d'échelle, dont un élément d'échelle intermédiaire, un élément d'échelle supérieur et un élément d'échelle inférieur.FIG. 6 shows a stepladder 25 comprising two series of ladder elements 26, 27. Each series 26, 27 comprises three ladder elements, including an intermediate ladder element, an upper ladder element and a ladder element. lower scale.
Un élément antidérapant 23 est emboîté autour de chaque partie tubulaire mâle 12 de l'élément d'échelle inférieur de chaque série d'éléments d'échelle 26, 27.An anti-skid member 23 is fitted around each male tubular portion 12 of the lower ladder member of each set of ladder members 26, 27.
Les deux séries d'éléments d'échelle 26, 27 sont reliées l'une à l'autre par une pièce supérieure de liaison 28.The two series of ladder elements 26, 27 are connected to each other by an upper connecting piece 28.
La pièce supérieure de liaison 28 comporte une plate forme 29 de forme générale rectangulaire et deux éléments en U inversé 30 dont la face intérieure est solidaire, sensiblement au niveau de l'extrémité de chaque branche des l'éléments en U, de la face extérieure de deux côtés opposés de la plate forme 29.The upper connecting piece 28 comprises a platform 29 of generally rectangular shape and two inverted U-shaped elements 30 whose inner face is integral, substantially at the end of each branch of the U-shaped elements, of the outer face. on two opposite sides of the platform 29.
Les branches de chaque élément en U sont prolongées par une partie tubulaire mâle, de forme complémentaire de celle des parties tubulaires femelles 12 de chaque élément d'échelle supérieur, emboîtée dans les parties tubulaires femelles 12 correspondantes de chaque élément d'échelle supérieur. II va de soi que l'invention n'est pas limitée à la forme de réalisation, décrite ci-dessus à titre d'exemple, mais qu'elle en embrasse au contraire toutes les variantes de réalisation. The branches of each U-shaped member are extended by a male tubular portion, complementary in shape to that of the female tubular portions 12 of each upper ladder member, nested in the corresponding female tubular portions 12 of each upper ladder member. It goes without saying that the invention is not limited to the embodiment described above by way of example, but that it encompasses all variants.

Claims

REVENDICATIONS
1. Elément d'échelle modulaire (2) comprenant deux montants parallèles espacés (3) et au moins une traverse (4) solidaire par ses extrémités desdits deux montants (3), caractérisé en ce qu'il est réalisé en matériau synthétique en une seule pièce et en ce que l'au moins une traverse (4) et les montants (3) sont chacun constitués d'un profilé ouvert (5, 6) comprenant une structure alvéolaire, chaque montant (3) étant prolongé à l'une de ses extrémités par une partie tubulaire femelle (11), et à son autre extrémité par une partie tubulaire mâle (12) destinée à être engagée dans la partie tubulaire femelle (11 ) d'un élément d'échelle adjacent (2*).1. Modular ladder element (2) comprising two spaced parallel uprights (3) and at least one cross member (4) secured by its ends to said two uprights (3), characterized in that it is made of synthetic material in one single piece and in that the at least one crossbar (4) and the uprights (3) each consist of an open profile (5, 6) comprising a honeycomb structure, each upright (3) being extended to one at its ends by a female tubular portion (11), and at its other end by a male tubular portion (12) to be engaged in the female tubular portion (11) of an adjacent ladder member (2 * ).
2. Elément d'échelle modulaire (2) selon la revendication 1, caractérisé en ce que la surface extérieure de la partie tubulaire mâle (12) de chaque montant (3) est délimitée par une surface tronconique et en ce que la surface intérieure de la partie tubulaire femelle (11) de chaque montant (3) est délimitée par une surface tronconique de forme complémentaire de celle la surface extérieure de la partie tubulaire mâle (12) de chaque montant (3).2. Modular ladder element (2) according to claim 1, characterized in that the outer surface of the male tubular portion (12) of each upright (3) is delimited by a frustoconical surface and in that the inner surface of the female tubular portion (11) of each upright (3) is delimited by a frustoconical surface of shape complementary to that of the outer surface of the male tubular portion (12) of each upright (3).
3. Elément d'échelle modulaire (2) selon l'une des revendications 1 et 2, caractérisé en ce que les parties tubulaires mâle (12) et femelle (11 ) de chaque montant (3) comprennent des moyens de fixation complémentaires (15, 16, 17).3. Modular ladder element (2) according to one of claims 1 and 2, characterized in that the male (12) and female (11) tubular portions of each upright (3) comprise complementary fixing means (15). , 16, 17).
4. Elément d'échelle modulaire (2) selon la revendication 3, caractérisé en ce que les moyens de fixation complémentaires (15, 16, 17) sont réalisés par encliquetage.4. Modular ladder element (2) according to claim 3, characterized in that the complementary fastening means (15, 16, 17) are made by snapping.
5. Elément d'échelle modulaire (2) selon l'une des revendications 3 et 4, caractérisé en ce que les moyens de fixation complémentaires comportent une languette (15) ménagée dans la partie tubulaire mâle (12) de chaque montant (3), sur laquelle est ménagé un téton (16) tourné vers l'extérieur destiné à s'engager dans un trou (17) de forme complémentaire ménagé dans la partie tubulaire femelle (11) de chaque (3) montant d'un élément d'échelle adjacent (2').5. Modular ladder element (2) according to one of claims 3 and 4, characterized in that the complementary fastening means comprise a tongue (15) formed in the male tubular portion (12) of each upright (3). , on which is provided an outwardly facing stud (16) for engaging a complementary shaped hole (17) in the female tubular portion (11) of each (3) stud of a adjacent ladder (2 ').
6. Elément d'échelle modulaire (2) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la surface intérieure de la partie tubulaire mâle (12) de chaque montant (3) comprend des nervures longitudinales de renforcement (18). 6. Modular ladder element (2) according to any one of claims 1 to 5, characterized in that the inner surface of the male tubular portion (12) of each upright (3) comprises longitudinal reinforcement ribs (18). ).
7. Elément d'échelle modulaire (2) selon l'une quelconque des revendications l à 6, caractérisé en ce que l'au moins une traverse (4) comprend, sur sa face tournée du côté des parties mâles des montants (3), une nervure de renforcement (19) revenant sur chacun des montants (3). 7. Modular ladder element (2) according to any one of claims 1 to 6, characterized in that the at least one cross member (4) comprises, on its face turned towards the male parts of the uprights (3). , a reinforcing rib (19) returning to each of the uprights (3).
8. Echelle modulaire (22) comprenant au moins deux éléments d'échelle (2) selon l'une quelconque des revendication 1 à 7 emboîtés l'un dans l'autre.8. Modular ladder (22) comprising at least two ladder elements (2) according to any one of claims 1 to 7 nested one inside the other.
9. Echelle (22) selon la revendication 8, caractérisée en ce qu'elle comprend un élément antidérapant (23) destiné à être emboîté autour de chaque partie tubulaîre mâle (12) de l'élément d'échelle inférieur et un élément d'appui antidérapant (24) destiné à être emboîté dans chaque partie tubulaire femelle (11 ) de l'élément d'échelle supérieur.9. Scale (22) according to claim 8, characterized in that it comprises a non-slip element (23) intended to be fitted around each male tubular portion (12) of the lower ladder element and an element of non-slip support (24) for fitting into each female tubular portion (11) of the upper ladder element.
10. Escabeau (25) comprenant deux séries (26, 27) d'au moins deux éléments d'échelle (2) selon l'une quelconque des revendication 1 à 7 emboîtés l'un dans l'autre, caractérisé en ce qu'il comprend une pièce supérieure de liaison (28) comportant deux éléments en U inversé (30) dont chacune des branches est prolongée par une partie tubulaire mâle destinée à être emboîtée dans la partie tubulaire femelle (12) correspondante de chaque élément d'échelle supérieur. 10. Stepladder (25) comprising two series (26, 27) of at least two ladder elements (2) according to any one of claims 1 to 7 nested one inside the other, characterized in that it comprises an upper connecting piece (28) comprising two inverted U-shaped elements (30) each of whose branches is extended by a male tubular part intended to be fitted into the corresponding female tubular part (12) of each upper scale element .
PCT/FR2006/000899 2005-04-26 2006-04-24 Modular ladder element WO2006114503A1 (en)

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FR0504180A FR2884854B1 (en) 2005-04-26 2005-04-26 MODULAR SCALE ELEMENT
FR05/04180 2005-04-26

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP2009224A1 (en) 2007-06-26 2008-12-31 Chen Lu Wang Plastic ladder
GB2481235A (en) * 2010-06-17 2011-12-21 Alpha Composites Ltd Portable multi-purpose modular structure
JP7390706B2 (en) 2019-12-10 2023-12-04 株式会社アルミス split stepladder

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009009545U1 (en) 2009-07-10 2009-12-31 Poly-Tools Bennewart Gmbh Modular connector system
CN104727732B (en) * 2015-03-09 2018-05-01 重庆市公泽科技有限公司 Trim gardens vertical ladder

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AU536800B2 (en) * 1977-06-01 1984-05-24 Edward Commerford John Multiple module portable ladder
US4834216A (en) * 1987-01-15 1989-05-30 Emerson Electric Co. Foldable ladder structure and method of manufacturing the same
EP0327323A1 (en) * 1988-02-04 1989-08-09 Tristian Guy Melland Ladders
US4917216A (en) * 1988-06-16 1990-04-17 Kimber Edward G Segmented ladder construction
DE20002428U1 (en) * 2000-02-10 2000-08-17 Dental Forschung Schleicher Gm ladder
US20040222043A1 (en) * 2003-05-09 2004-11-11 Fortner Benjamin Arthur Multi-configurable segmented ladder

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US4060150A (en) * 1973-09-07 1977-11-29 Peter Hughes Ladder kit
FR2386715A1 (en) * 1977-04-07 1978-11-03 Verhagen Jacobus Tubular scaffolding coupling component - comprises parallel plates joined by intermediate piece and bearing against tube inside walls
AU536800B2 (en) * 1977-06-01 1984-05-24 Edward Commerford John Multiple module portable ladder
US4834216A (en) * 1987-01-15 1989-05-30 Emerson Electric Co. Foldable ladder structure and method of manufacturing the same
EP0327323A1 (en) * 1988-02-04 1989-08-09 Tristian Guy Melland Ladders
US4917216A (en) * 1988-06-16 1990-04-17 Kimber Edward G Segmented ladder construction
DE20002428U1 (en) * 2000-02-10 2000-08-17 Dental Forschung Schleicher Gm ladder
US20040222043A1 (en) * 2003-05-09 2004-11-11 Fortner Benjamin Arthur Multi-configurable segmented ladder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2009224A1 (en) 2007-06-26 2008-12-31 Chen Lu Wang Plastic ladder
GB2481235A (en) * 2010-06-17 2011-12-21 Alpha Composites Ltd Portable multi-purpose modular structure
JP7390706B2 (en) 2019-12-10 2023-12-04 株式会社アルミス split stepladder

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FR2884854B1 (en) 2007-06-29

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