Sleeve bolt

F - Mech Eng,Light,Heat,Weapons – 16 – B

Patent

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Details

F16B 13/06 (2006.01)

Patent

CA 2372733

A sleeve bolt (B) for insertion in a hole (H) delimited by a wall comprises a threaded fastener (40) and an expansion member (41). The threaded fastener (40) has a stem (50) that includes a proximal cylindrical shank (52) and a distal threaded section (54). The shank (52) has substantially the diameter of the hole (H) and defines at a distal end thereof a conical expander portion (56). The expansion member (41) comprises a distal threaded member (44) and a proximal expansion wedge (42), the threaded member (44) being threadably engaged to the threaded section (54) of the stem (50). The expansion wedge (42) has a proximal end (68) adapted, upon axial displacement of the expansion member (41) towards the shank (52) resulting from a rotation of the stem (50), to engage the conical expander portion (56) such as to expand the proximal end (68) of the expansion wedge (42) outwardly into engagement with the wall. The expansion wedge (42) frictionally engages the wall upon introduction of the stem (50) in the hole, whereas the threaded member (44) is spaced from the wall. The threaded member (44) comprises a distal conical section (62) which tapers towards the expansion wedge (42) and which is adapted to displace towards and relative to both the expander portion (56) and the expansion wedge (42) such that the conical section (62) causes a distal end (70) of the expansion wedge (42) to expand outwardly into engagement with the wall.

Cette invention concerne une vis à manchon (B) conçue pour être insérée dans un trou (H) délimité par une paroi, qui comprend une liaison technique filetée (40) et un élément expansible (41). La liaison technique filetée (40) comprend une tige (50) faite d'une queue proximale (52) et d'une partie filetée distale (54). La queue (52) présente sensiblement le même diamètre que le trou (H) et définit à son extrémité distale une partie conique d'expansion (56). L'élément expansible (41) comprend un élément fileté distal (44) et un coin proximal (42), l'élément fileté venant se visser sur la partie filetée (54) de la tige (50). Le coin (42) comporte une extrémité proximale (68) conçue, lorsque l'élément d'expansion (41) se déplace axialement vers le partie (52) et fait tourner la tige (50), pour s'engager dans la partie d'expansion conique (42) de telle sorte que le coin s'écarte et vienne porter contre la paroi. Ce coin (42) prend appui par frottement contre la paroi lorsque la partie (50) pénètre dans le trou, cependant que la partie filetée (44) s'éloigne du trou. La partie filetée (44) comprend une partie distale conique (62) qui va en rétrécissant vers le coin (42) et qui est conçue pour se déplacer à la fois vers la partie d'expansion (56) et le coin (42) de telle sorte que la partie conique (62) force l'extrémité distale (70) du coin (42) à se dilater vers l'extérieur et à s'engager dans la paroi.

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