FR2534307A1 - Ladder coupling - Google Patents

Ladder coupling Download PDF

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Publication number
FR2534307A1
FR2534307A1 FR8216953A FR8216953A FR2534307A1 FR 2534307 A1 FR2534307 A1 FR 2534307A1 FR 8216953 A FR8216953 A FR 8216953A FR 8216953 A FR8216953 A FR 8216953A FR 2534307 A1 FR2534307 A1 FR 2534307A1
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FR
France
Prior art keywords
flanges
articulation
joint
teeth
scales
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.)
Granted
Application number
FR8216953A
Other languages
French (fr)
Other versions
FR2534307B3 (en
Inventor
Michel Lavrard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chatellerault Armes Cycles
Original Assignee
Chatellerault Armes Cycles
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 Chatellerault Armes Cycles filed Critical Chatellerault Armes Cycles
Priority to FR8216953A priority Critical patent/FR2534307B3/en
Publication of FR2534307A1 publication Critical patent/FR2534307A1/en
Application granted granted Critical
Publication of FR2534307B3 publication Critical patent/FR2534307B3/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C1/00—Ladders in general
    • E06C1/02—Ladders in general with rigid longitudinal member or members
    • E06C1/32—Ladders with a strut which is formed as a ladder and can be secured in line with the ladder

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  • Ladders (AREA)

Abstract

Ladder coupling composed of two identical flanges rotating about a shaft carrying a spring compressed between the two flanges with the aid of a bolt provided at one of the ends of the said shaft. Each flange is serrated. These two serrations, composed of rectangular or trapezoidal teeth, mesh under the pressure of a tightening button and unmesh under the thrust of the spring released by unscrewing the said bolt.

Description

ARTICULATION D'ECHELLES
Les articulations équipant certains types d'échelles et en particulier celles dites pliantes, sont généralement composées de deux flasques juxtaposés réunis entre eux par un axe autour duquel ils peuvent tourillonner.ARTICULATION OF LADDERS
The joints fitted to certain types of ladders and in particular those called folding, are generally composed of two juxtaposed flanges joined together by an axis around which they can pivot.

Le verrouillage de l'articulation necessaire pour obtenir une position opérationnelle de l'échelle (les plus fréquentes : échelle droite - échelle double échafaudage...) est obtenu soit au moyen d'un ergot traversant les deux flasques constitutifs de l'articulation - soit par rapprochement des deux flasques dont l'un comporte un certain nombre d'ergots et l'autre des trous servant de logement aux dits ergots (brevet français nO 2.082.571).The locking of the articulation necessary to obtain an operational position of the ladder (the most frequent: straight ladder - double scaffolding ladder ...) is obtained either by means of a lug crossing the two flanges constituting the articulation - either by bringing the two flanges together, one of which has a certain number of lugs and the other of the holes serving as housing for the said lugs (French patent No. 2,082,571).

La présente invention concerne une articulation d'échelles dont les deux flasques sont strictement identiques.The present invention relates to a hinge of scales, the two flanges of which are strictly identical.

Cette similitude au niveau de la dentelure des deux flasques permet d'obtenir un engrènement suivant la position désirée de l'échelle.This similarity in the serration of the two flanges makes it possible to obtain a meshing according to the desired position of the scale.

Cette même similitude permet de standardiser les deux flasques constitutifs de l'articulation et partant, obtenir un cout de fabrication nettement diminué par rapport aux principes déjà existants.This same similarity makes it possible to standardize the two flanges constituting the joint and, consequently, to obtain a manufacturing cost markedly reduced compared to the already existing principles.

L'invention est expliquée ci-après en détail suivant des exemples d'exécution représentés par les dessins sur lesquels La figure 1 représente une articulation en perspective, La figure 2 représente un flasque d'articulation vu de face, La figure 3 représente un flasque d'articulation vu de profil, La figure 4 représente les différents angles de blocage de l'articulation
possibles, La figure 5 représente deux tronçons d'échelles équipés de leurs flasques d'articulation.The invention is explained below in detail according to exemplary embodiments represented by the drawings in which FIG. 1 represents a joint in perspective, FIG. 2 represents a joint flange seen from the front, FIG. 3 represents a flange articulation seen in profile, Figure 4 represents the different angles of articulation blocking
Figure 5 shows two sections of ladders fitted with their hinge flanges.

Suivant la figure 1-, l'articulation est composée de deux flasques identiques 1 et 2, pivotant autour d'un axe fileté 3. Un ressort 4 comprime entre les deux flasques, désengrène automatiquement les deux flasques 1 et 2 lorsque le bouton de serrage 5 est dévissé.According to Figure 1-, the joint is composed of two identical flanges 1 and 2, pivoting around a threaded axis 3. A spring 4 compresses between the two flanges, automatically disengages the two flanges 1 and 2 when the tightening button 5 is unscrewed.

Suivant la figure 2, un flasque d'articulation est composé d'une coquillesphé- rique 6 prolongée d'une queue 7 et percée en son centre d'un trou 8. Les bords de la coquille 6, relevés à 900, comporte une pluralité de dents 9 (rectangulaires ou trapézoidales) dont l'espacement est au moins égal à la largeur d'une dent. Les angles o( entre les axes de deux dents consécutives sont nécessairement égaux et un sous-multiple de 3600. According to FIG. 2, a joint flange is composed of a spherical shell 6 extended by a tail 7 and pierced in its center with a hole 8. The edges of the shell 6, raised to 900, have a plurality teeth 9 (rectangular or trapezoidal) whose spacing is at least equal to the width of a tooth. The angles o (between the axes of two consecutive teeth are necessarily equal and a submultiple of 3600.

Suivant figures 1 et 2, les dentelures identiques des flasques 1 et 2, miseE face à face, s'engrennent sous la simple pression du bouton de serrage 5, Pc aboutir à un verrouillage de l'articulation.According to FIGS. 1 and 2, the identical serrations of the flanges 1 and 2, placed face to face, mesh with the simple pressure of the tightening button 5, Pc resulting in locking of the joint.

Bien évidemment, lorsque le bouton de serrage 5 est suffisamment dévissé, l ressort 4 comprimé entre les deux flasques libéré, désengrenne les deux flash 1 et 2 et déverrouille l'articulation.Obviously, when the tightening button 5 is sufficiently unscrewed, the spring 4 compressed between the two released flanges, disengages the two flashes 1 and 2 and unlocks the joint.

Suivant figure 4, lorsque l'articulation est déverrouillée, les deux flasqu 1 et 2 peuvent tourner l'un par rapport à l'autre pour obtenir une nouvelle position de verrouillage. Les différents angles de verrouillage de loarticu tion sont nécessairement des multiples de l'angle α (voir figure 2) dont deux côtés sont composés de l'axe de deux dents 9 consécutives.According to Figure 4, when the joint is unlocked, the two flanges 1 and 2 can rotate relative to each other to obtain a new locking position. The different locking angles of the articulation are necessarily multiples of the angle α (see Figure 2) two sides of which are composed of the axis of two consecutive teeth 9.

Suivant figure 5,la queue 7 des flasques 1 et 2 permet d'assembler l'articu tion aux montants 10 ou 11 de l'échelle soit par soudure, rivetage ou boulo According to FIG. 5, the tail 7 of the flanges 1 and 2 makes it possible to assemble the joint to the uprights 10 or 11 of the scale either by welding, riveting or bolting

Claims (5)

caractérisée en ce que ces deux flasques sont strictement identiques. characterized in that these two flanges are strictly identical. situé entre les deux flasques, chacun solidaire d'un montant de l'échelle, located between the two flanges, each secured to a ladder upright, de deux flasques 1 et 2 pivotant autour d'un même axe porteur d'un ressort of two flanges 1 and 2 pivoting around the same axis carrying a spring REVENDICATIONS 1. Articulation d'échelles verrouillable et- déverrouillable à volonté composée CLAIMS 1. Joint of lockable and unlockable scales at will composed 2. Articulation d'échelles suivant revendication 1 caractérisée en ce que la2. Articulation of ladders according to claim 1 characterized in that the dentelure prévue sur le flasque 1 ou 2 est composée de dents 9 rectangulaires serration provided on the flange 1 or 2 is composed of 9 rectangular teeth ou trapézoidales.  or trapezoidal. 3. Articulation d'échelles suivant revendications 1 et 2 caractérisée en ce que3. Articulation of ladders according to claims 1 and 2 characterized in that l'espacement entre chaque dent 9 est au moins égal à la largeur des dites the spacing between each tooth 9 is at least equal to the width of the said dents 9. teeth 9. 4. Articulation d'échelles suivant revendications 1 - 2 et 3 caractérisée en ce4. Articulation of scales according to claims 1 - 2 and 3 characterized in that que les angles v4~ entre les axes de deux dents 9 consécutives sont nécessai that the angles v4 ~ between the axes of two consecutive teeth 9 are necessary rement égaux et un sous multiple de 3600. equal and a sub multiple of 3600. 5. Articulation d'échelles suivant revendications 1 - 2 - 3 et 4 caractérisée5. articulation of scales according to claims 1 - 2 - 3 and 4 characterized de manière connue en soi, en ce que les dentelures des flasques 1 et 2 in a manner known per se, in that the serrations of the flanges 1 and 2 s'engrènent sous la pression d'un bouton de serrage 5 (articulation verrouil mesh under the pressure of a tightening button 5 (locking joint lée) et se désengrènent sous la poussée d'un ressort comprimé-4 suffisamment ) and disengage under the pressure of a compressed spring-4 sufficiently libéré par le simple dévissage du bouton 5 (articulation déverrouillée).  released by simply unscrewing button 5 (unlocked joint).
FR8216953A 1982-10-07 1982-10-07 ARTICULATION OF LADDERS Expired FR2534307B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8216953A FR2534307B3 (en) 1982-10-07 1982-10-07 ARTICULATION OF LADDERS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8216953A FR2534307B3 (en) 1982-10-07 1982-10-07 ARTICULATION OF LADDERS

Publications (2)

Publication Number Publication Date
FR2534307A1 true FR2534307A1 (en) 1984-04-13
FR2534307B3 FR2534307B3 (en) 1985-06-21

Family

ID=9278127

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8216953A Expired FR2534307B3 (en) 1982-10-07 1982-10-07 ARTICULATION OF LADDERS

Country Status (1)

Country Link
FR (1) FR2534307B3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001676A1 (en) * 1986-09-05 1988-03-10 Henri Rey Hinge element for a folding support
EP0324885A1 (en) * 1988-01-22 1989-07-26 Haison Yuen An adjustable folding ladder
US5228535A (en) * 1990-07-12 1993-07-20 Mccarty George W Folding ladder
US5279387A (en) * 1991-09-25 1994-01-18 Emerson Electric Co. Articulated ladder assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988001676A1 (en) * 1986-09-05 1988-03-10 Henri Rey Hinge element for a folding support
FR2603673A1 (en) * 1986-09-05 1988-03-11 Rey Henri ARTICULATION ELEMENT FOR FOLDING SUPPORTS
US5487207A (en) * 1986-09-05 1996-01-30 Rey; Henri Hinge element for a folding support
EP0324885A1 (en) * 1988-01-22 1989-07-26 Haison Yuen An adjustable folding ladder
US5228535A (en) * 1990-07-12 1993-07-20 Mccarty George W Folding ladder
US5279387A (en) * 1991-09-25 1994-01-18 Emerson Electric Co. Articulated ladder assembly

Also Published As

Publication number Publication date
FR2534307B3 (en) 1985-06-21

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