FR2537223A1

FR2537223A1 - Clamping device and keys enabling profiled parts, such as bars and tubes for the construction industry, to be rapidly assembled.

Info

Publication number: FR2537223A1
Application number: FR8201938A
Authority: FR
Original assignee: Individual
Current assignee: Individual
Priority date: 1982-02-05
Filing date: 1982-02-05
Publication date: 1984-06-08

Abstract

The device consists of a clamping body comprising two securely fixed portions a each intended to receive one of the elements to be assembled. Each of these portions closes up on itself under the action of a key b. Application to the production of scaffolding and other bearing structures.

Description

La ressente invention concerne un dispositif permettant de lier entre eux deux volumes matérialisés par tout éliment solide et notamment les métaux, les plastiques, le bois et les matériaux composites. Les volumes ainsi rendus solidaires peuvent être représentés par des barres, des tubes, de toutes formes de section, ou tout autre profilé. Le dispositif est constitue d'un corps de bride comprenant deux par ties destinées à recevoir chacune l'un des éléments à assembler (a-fig I) et de deux clavettes (b-fig I). Le dispositif prevoit que les deux parties de la bride sont solidaires,fixes
ou non fixes entre elles.Le dispositif de blocage selon l'invention consiste a remplacer la rampe hElicoidale de serrage (boulons ou vis) par une rampe droite que nous appelons ici clavette (b fig I) qui verra ses glissières (cfigI) se loger dans les.glissières de la bride (d fig I) sous un effet de choc (maillet, marteau) en quelques secondes. Cette clavette dont les deux parties distinctes (c fig I) formant rampe sont situées sur le ême plan.Elles peuvent se trouver portées par une surface non plane qui dépend de la forme de la clavette, laquelle est destinée a rapprocher et a maintenir rapprochées les deux parties de la bride pour obtenir le serrage de celle-ci sur la pièce qu'elle est chargée de maintenir (fig 3c et 3f) cela implique naturellement une élas tiçite du métal de la bride ou qu'elle soit constitué de deux parties réunies par une articulation.Deux variantes d'u- tilisation de la clavette de serrage se .présentent : 1 la clavette recouvre un secteur de la section du volume enveleppé inferieur a I800 (fig 2a) ce qui implique l'impossibilité de mise en place latérale de profilés de grandes longueurs, ceux-ci devant être glissés par leurs extrémités a l'intéri- eur de la partie de la bride destinée a les recevoir, a moins que la dite bride ne possède une articulatiOn. 20- la clavette recouvre un secteur de la section du profilé égal ou supérieur a I800 ce qui permet la mise en place latérale
du dit profils (fig 2a et 2b). I1 est également prévu
-our faciliter les montages d'avoir recours a des brides dont l'ouverture légèrement inférieure a I800 permettrait la mise en place latérale des profilés et leur maintien provisoire a cette place avant serrage par la clavette en faisant appel a un taux suffisant d'élasticité du métal de la bride.The invention relates to a device for linking together two volumes materialized by any solid éliment including metals, plastics, wood and composite materials. The volumes thus made integral may be represented by bars, tubes, all section shapes, or any other profile. The device is constituted by a flange body comprising two parts intended to each receive one of the elements to be assembled (a-fig I) and two keys (b-fig I). The device provides that the two parts of the flange are secured, fixed
The blocking device according to the invention consists in replacing the hydraulic clamping ramp (bolts or screws) by a right ramp which we call here key (b fig I) which will see its slides (cfigI) lodge in the slides of the flange (d fig I) under a shock effect (mallet, hammer) in a few seconds. This key, whose two distinct parts (c fig I) forming a ramp are located on the same plane. They can be carried by a non-planar surface that depends on the shape of the key, which is intended to bring closer and maintain close the two parts of the flange to obtain the clamping thereof on the part it is responsible for maintaining (Figure 3c and 3f) this naturally implies a elasticity of the metal flange or it consists of two parts together Two variants of use of the clamping key are shown: 1 the key covers a sector of the section of the inverted volume inferior to 1800 (FIG. 2a) which implies the impossibility of lateral positioning. long sections, these to be slid by their ends inside the part of the flange intended to receive them, unless the said flange has an articulatiOn. 20- the key covers a sector of the profile section equal to or greater than 1800 which allows the lateral positioning
of said profiles (fig 2a and 2b). It is also planned
to facilitate assemblies to use flanges whose opening slightly lower than 1800 would allow the lateral positioning of the profiles and their temporary retention in this place before clamping by the key using a sufficient rate of elasticity metal flange.

Les rampes pourront être obtenues par tout procédé de transformation : laminage, repoussage, pliage, fraisage, moulage.The ramps can be obtained by any transformation process: rolling, pushing, bending, milling, molding.

Le métal ou toute autre matière utilisée sera choisie en fonction des contraintes auxquelles la bride sera soumise. The metal or any other material used will be chosen according to the stresses to which the flange will be subjected.

La contrainte' exercée par a clavette par de la bride sur le profilé pourra eAtre progressive selon qu elle recouvrira une portion plus ou moins importante de la partie ouverte de la bride ou au contraire constante..The stress exerted by a key by flange on the profile may be progressive depending on whether it will cover a more or less important portion of the open portion of the flange or otherwise constant.

Dans ce dernier cas, la rampe n'ocoupera qu'unie portion de la longueur de la clavette et se prolongera par un palier qui déterminera la contrainte maximale (fig 2d et 3,d). Le dispositif ou la clavette au lieu de rampe ne supporterait qu'un pa ier et ou-la partie ouverte de la bride formerait elle-.m.ê.~.e une rampe fait partie intégrante de l'invention (fig 3c et 3b). De même les dispositifs ou les clavettes décrites plus haut s'insèrent a l'intérieur de la bride (fig 4a et 4b) font partie du brevet L'angle formé par les axes des passages des. profilés a l'intérieur des brides peut être fixe (généralement 90 ) ou variable.Il est prévu dans le domaine du brevet que la bride peut comporter un axe omettant de faire pivoter un profilé par rapport A l'au- tre.In the latter case, the ramp will cut only a portion of the length of the key and will extend by a bearing which will determine the maximum stress (Fig 2d and 3, d). The device or the key instead of ramp would support only one pa and the open part of the flange would form a ramp is an integral part of the invention (Fig 3c and 3b). ). Similarly, the devices or keys described above inserted into the flange (Fig. 4a and 4b) are part of the patent The angle formed by the axes of the passageways. Profiles within the flanges may be fixed (generally 90) or variable. It is intended in the field of the patent that the flange may comprise an axis omitting to rotate one section relative to the other.

Ces diepositifs sont notamment destinés à la construction dtéchafaudages et autres structures portantes dont l'utilité s'étend a de nombreux domaines. L'intérêt de l'invention réside dans le faible prix de fabrication de la nouvelle bride et de sa clavette, clavette adaptable aux formes de brides déjà existantes. I1 est tout aussi important de prendre en considération le gain de temps apporté pour la mise en oeuvre de ces brides et clavettes lors du montage et démontage d'échafaudages par exemple. Alors que le serrage des deux ou quatre boulons des brides conventionnelles demande plusieurs minutes et quelque fois plusieurs dizaines de minutes, le serrage de la nouvelle bride est obtenu en quelques secondes. These devices are particularly intended for the construction of scaffolding and other load-bearing structures whose utility extends to many areas. The advantage of the invention lies in the low manufacturing cost of the new flange and its key, key adaptable to existing flange shapes. It is equally important to take into consideration the time saved for the implementation of these flanges and keys during the assembly and disassembly of scaffolding for example. While tightening the two or four bolts of conventional flanges requires several minutes and sometimes several tens of minutes, tightening the new flange is achieved in a few seconds.

Claims

CLAIMS I- Set of parts concurring 9 to join together and that in at least two dimensions, two volumes materialized by any element having a significant mechanical strength. These volumes are generally represented by bars, tubes and other sections intended for connection between them to form rigid structures that can be dismantled. This assembly comprises a part here called flange of suitable shape to fit the profiles which are intended for it and parts ensuring the clamping of this flange on said said profiles called keys.This flange comprises two sectors (generally cylindrical) fixed one to the other. other, rigidement or not, called to receive the profiles to assemble. These sectors- are provided on their edges with two rails or ramps, parallel or not, (fig Id) in which will take place the two rails or ramps, parallel or not (fig Ic) .By fitting the key in the flange on obtains the approximation of the edges of the latter or a stress on the section to maintain.Les devices 1 to 10sont claims 2- Device I-where the ramps carried by the key are not parallel to each other which allows the ra close- parallel edges of the flange by sliding the key on the flange 0 (Fig 3 a) 3- Device I where the ramps carried by the flange are not parallel allowing their approach by the introduction of the key a raml, Farallèles (fig 3b etc).

4- Device according to claims 2 and 3, wherein the ramps make it possible to implement a pre-established stress rate by virtue of their properties (FIGS. 3d and 2d).

5- Device according to any one of claims I, 2,> 2> 3, 4 wherein the profile of the keyways and flange ramps have bosses (Fig 2c In) called to engage and positioning the key by relative to the flange0 6- Device according to I where the key occupies a sector of the section of the profile to maintain smaller than 1800 (Fig 2a) 7- Device according to I where the key occupies a sector greater than 1800 of the section of the profile to maintain (fig2b) 8- Device according to I wherein the key occupies a sector slightly smaller than I800 9- Device.selon any one of claims I, 2, 3,4,5a6,7, E, where the key slides inside the flange coming to bear directly on the volume to constrain with approximation or not.de edges of the flange (fig 4a and 4b)

IO- Device according to any one of claims I, 2, 3,4,5,6,7,8,9, characterized in that the key is provided with an appendage for receiving shocks for its implementation. (Fig Ie and Fig 4d)