Self-locking threaded connecting device

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

Patent

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Details

F16B 39/30 (2006.01) F16B 39/32 (2006.01)

Patent

CA 2194164

A self-locking threaded connecting device comprising a male component (11) with a recess locking thread type (31) and a female component (12) with a flexible thread segment (21). Tension from the alignment of the internal flexible thread segment urges projections (22) of the flexible thread segment into the recesses (32) of the recess locking thread and thereby prevent the threaded fastener from loosening and coming apart in response to axial pressure optionally combined with vibration, expansion, contraction or other movement. The projections (22) and recesses (32) are shaped so that the faces glide by each other and unlock with the application of adequate torque. The two threads are designed to work together. The female component (12) when used with a standard male component (11) without recesses (32) provides resistance to inadvertent loosing.

La présente invention concerne un dispositif de raccordement à filetage autobloquant comprenant un élément mâle (11) présentant un filetage bloquant du type à évidements (31) et un élément femelle (12) dont un segment présente du filetage flexible (21). La tension provoquée par le redressement du segment à filetage femelle flexible force les saillants (22) du segment à filetage flexible à pénétrer dans les évidements (32) du filetage bloquant par évidements, ce qui empêche l'écrou fileté de se desserrer et de se dégager à la suite d'une pression axiale se combinant éventuellement à des mouvements de vibration, de dilatation, de contraction ou autres. Les formes des saillants (22) et des évidements (32) sont conçues pour que leurs surfaces glissent l'une sur l'autre dès qu'on applique un couple adéquat. Les deux filetages sont conçus pour coopérer. L'élément femelle (12), lorsqu'il est utilisé avec un élément mâle standard (11) sans évidements (32), présente une résistance au desserrement accidentel.

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