CH471977A

CH471977A - Orthogonal bolt connection clamp

Info

Publication number: CH471977A
Application number: CH486568A
Authority: CH
Inventors: Jean Olga
Original assignee: Somefran
Priority date: 1968-04-02
Filing date: 1968-04-02
Publication date: 1969-04-30

Description

  

  Collier de liaison orthogonale à boulons    La présente invention     concerne    un     colher    de liaison  orthogonale à boulons, destiné à assurer la liaison rigide,  à angle droit, notamment de deux tubes.  



  Le collier faisant l'objet de la présente invention est  caractérisé en ce qu'il est constitué d'un corps monobloc  portant deux chapeaux de serrage équipés de boulons.  



  La figure unique du dessin annexé représente, à titre  d'exemple, une forme d'exécution du collier, objet de  l'invention.  



  Le corps principal du collier ou raccord a peut être  en acier, en fonte malléable, en alliage léger ou en  tout autre matériau (tel que plastique armé par exem  ple).  



  Ce corps     possède    de part et d'autre du plan médian  deux logements de forme semi-circulaire b qui serviront  de berceau d'appui aux tubes à brider.  



  Les axes longitudinaux de ces logements sont placés  à     901,    l'un par rapport à l'autre et leur point d'inter  section est situé au centre du corps, ce qui assure  automatiquement la perpendicularité des tubes bridés.  



  On distingue également les     tourillons    c et d sur les  quels seront positionnés les deux chapeaux de serrage.  Ces derniers (dont un seul est représenté sur le dessin en  e) sont en tôle     matricée    et nervurée perpendiculairement  aux axes longitudinaux des berceaux de tubes ce qui leur  confère une parfaite rigidité en position de serrage.  



  Les chapeaux sont fixés sur les     tourillons    à l'aide  d'une languette préformée f qui sera repliée en forme de  bague sur le tourillon et soudée ensuite sur sa tranche       terminale.     



  La face interne convexe m des chapeaux qui consti  tue la portée d'appui sur le tube au moment du serrage,  est moletée afin de parfaire la résistance au glissement.  



  Le bec des chapeaux possède une partie plate g qui  est percée d'un     oeilleton    de forme ovoïde h dans lequel  passera la partie filetée du boulon de serrage k.    Ce dernier est en acier mi-dur à tête carrée, de pré  férence cadmié en vue d'une bonne résistance à la  corrosion. Cette tête vient se placer dans les logements  1 et n du corps de bride qui sont de forme appropriée  pour maintenir la tête du boulon et lui éviter tout mou  vement de rotation au serrage.  



  En définitive, l'amélioration apportée à ce     raccord     peut donc être définie sur les plans de la fabrication  et de l'utilisation par les caractéristiques suivantes  - Gain de poids appréciable grâce à l'utilisation  d'un corps ayant un minimum de matière première pour  un maximum de résistance.  



  - Importante surface de contact au serrage qui  provoque une excellente résistance au glissement accen  tuée par le moletage de la face interne des chapeaux.  



  - Forme fonctionnelle permettant un moulage sans  création de points faibles.  



  - Logements des accessoires de serrage permettant  l'utilisation de boulons normalisés, de fabrication cou  rante et leur changement instantané en cas de besoin.  



  - Esthétique nouvelle et de bon goût.  



  Le collier décrit ci-dessus en regard du dessin annexé  est tout particulièrement utile pour assurer la liaison  rigide, à angle droit, notamment de deux barres ou tubes,  en particulier de tubes de section 40/49 ou autres.



  The present invention relates to an orthogonal connection collar with bolts, intended to ensure the rigid connection, at right angles, in particular of two tubes.



  The collar forming the subject of the present invention is characterized in that it consists of a one-piece body carrying two clamping caps equipped with bolts.



  The single figure of the appended drawing represents, by way of example, an embodiment of the collar, object of the invention.



  The main body of the collar or fitting a can be made of steel, malleable iron, a light alloy or any other material (such as reinforced plastic, for example).



  This body has on either side of the median plane two semi-circular shaped housings b which will serve as a support cradle for the tubes to be clamped.



  The longitudinal axes of these housings are placed at 901, one with respect to the other and their point of intersection is located at the center of the body, which automatically ensures the perpendicularity of the flanged tubes.



  There are also the pins c and d on which the two clamping caps will be positioned. The latter (only one of which is shown in the drawing at e) are made of stamped sheet metal and ribbed perpendicular to the longitudinal axes of the tube cradles which gives them perfect rigidity in the clamping position.



  The caps are fixed to the journals using a preformed tongue f which will be folded in the form of a ring on the journal and then welded to its end edge.



  The convex internal face m of the caps which constitutes the bearing surface on the tube when tightening, is knurled in order to improve the resistance to sliding.



  The beaks of the caps have a flat part g which is pierced with an ovoid-shaped eyelet h through which the threaded part of the tightening bolt k will pass. The latter is made of semi-hard steel with a square head, preferably cadmium-coated for good corrosion resistance. This head is placed in the housings 1 and n of the flange body which are of suitable shape to hold the head of the bolt and prevent it from any rotational movement when tightening.



  Ultimately, the improvement made to this fitting can therefore be defined in terms of manufacture and use by the following characteristics - Appreciable weight saving thanks to the use of a body having a minimum of raw material for maximum resistance.



  - Large contact surface when tightening which provides excellent slip resistance, enhanced by the knurling of the internal face of the caps.



  - Functional shape allowing molding without creating weak points.



  - Housings for tightening accessories allowing the use of standard bolts of current manufacture and their instantaneous change if necessary.



  - New aesthetics and good taste.



  The collar described above with reference to the appended drawing is very particularly useful for ensuring the rigid connection, at right angles, in particular of two bars or tubes, in particular of tubes of section 40/49 or others.

Claims

CLAIM Orthogonal connection collar with bolts, intended to ensure the rigid connection, at right angles, in particular of two tubes, characterized in that it consists of a one-piece body carrying two clamping caps fitted with bolts. SUB-CLAIMS 1. Collar according to claim, characterized in that the body, made of forged steel, has on either side of its median plane a cradle of semi-circular shape intended for the housing of the tubes, the longitudinal axes of which. are arranged at 90ç), in that,

on each lateral part of the cradles and parallel to the axis thereof there is a journal on which each of the clamping caps pivots, in that, opposite the trunnions, on the other lateral part of the cradles, and in the middle position, there is a square-shaped housing intended to receive the head of the tightening bolt and to immobilize it in rotation, a recess in the housing allowing the passage of the bolt shank. 2.

Collar according to claim and sub-claim 1, characterized in that the clamping caps are made of stamped sheet steel and ribbed laterally and of generally semicircular shape, fixed on each bolt by means of a tongue rolled around the journal and welded to the joint on the upper part of the cap, the internal face of the caps having a knurling intended to reinforce the sliding resistance of the flanged tubes. 3.

Collar according to claim and sub-claims 1 and 2, characterized in that the bolts fitted to the tightening cap are fitted with square heads with nut and interposition washer, the whole of the bolt being cadmied for the purpose of good corrosion resistance.