Reusable temporary fastening device for preassembling at...

B - Operations – Transporting – 25 – B

Patent

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Details

B25B 31/00 (2006.01) B21J 15/42 (2006.01) B25B 27/00 (2006.01) F16B 2/12 (2006.01) F16B 5/04 (2006.01) F16B 19/10 (2006.01)

Patent

CA 2715263

The invention relates to a reusable temporary fastening device (1), such as a pin clamp, for preassembling at least two structural members (4, 5) previously formed with coaxial bores (2, 3) for receiving said device, which comprises: a hollow cylindrical body (10) extending along an elongation axis (XX); a bearing ring (20) provided at a proximal end (10a) of the hollow body (10) and against which one of the structural members (4, 5) is intended to bear in a fastening position of the device (1); a pulling threaded rod (40) extending through the hollow body (10) and coaxial thereto, and to be inserted into the respective coaxial bores (2, 3) of the structural members (4, 5) to be attached; a tightening means connected to the pulling threaded rod, for maintaining the structural members (4, 5) against each other, wherein the tightening means includes at least one removable tubular end piece (50) adapted to be mounted on a proximal threaded end (40a) of the pulling rod (40), and can be locally axially compacted under the action of a force applied on said pulling rod in order to form a radial bead (100) for sandwiching the structural members (4, 5) between the latter and the bearing ring (20); characterised in that the device comprises a sheath (30) having a bearing ledge (36) on which the tubular end piece (50) bears, and enabling the formation of a radial bead (100) at a distance from the structural members.

La présente invention se rapporte à un dispositif de fixation provisoire et réutilisable (1), tel qu'une agrafe d'épinglage, destiné au pré-assemblage d'au moins deux éléments structuraux (4, 5) préalablement munis de perçages coaxiaux (2, 3) pour recevoir ledit dispositif, comprenant : un corps cylindrique creux (10) s'étendant selon un axe d'allongement (XX'); une bague d'appui (20) disposée à une extrémité proximale (10a) du corps creux (10) et contre laquelle un des éléments structuraux (4; 5) est destiné à reposer en position de fixation du dispositif (1); une tige filetée de traction (40) traversant le corps creux (10) coaxialement à celui-ci et destinée à être introduite dans les perçages coaxiaux (2, 3) respectifs des éléments structuraux (4, 5) à fixer; des moyens de serrage reliés à la tige filetée de traction et destinés à maintenir les éléments structuraux (4, 5) l'un contre l'autre, les moyens de serrage comprenant au moins un embout tabulaire amovible (50) adapté pour être monté sur une extrémité fileté proximale (40a) de la tige de traction (40) et pouvant être compacté localement axialement sous l'effet d'une force exercée sur ladite tige de traction de manière à former un bourrelet radial (100) destiné à prendre les élément structuraux (4, 5) en sandwich entre ce dernier et la bague d'appui (20), caractérisé en ce que il comporte un fourreau (30) présentant un rebord d'appui (36) sur lequel repose l'embout tubulaire (50), et permettant la formation du bourrelet radial (100) à distance des éléments structuraux.

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