F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 25/20 (2006.01)
Patent
CA 2282852
An anit-backlash nut (2) designed to translate along a lead screw (3) in two longitudinal directions is disclosed. The nut has one or more longitudinal flexure members (10, 12, 14) each having one end fixed to the nut and the other one free floating. Internal threads are formed at the free floating ends of the flexure members complementary to the threads (43) of the screw (3). Incline ramps (16, 18, 20) are located on the exterior of the free floating ends. A flexible compression member in the form of an O-ring (50) surrounds the ramps (16, 18, 20) for continuously urging the threads at the free floating end into forceful engagement with the threads of the screw. There is an adjustable sleeve (28) for urging the O-ring against the ramps with variable force to increase and decrease the force with which the threads of the flexure members (10, 12, 14) engage the threads (43) of the screw (3).
L'invention concerne un écrou (2) anti-jeu conçu pour se déplacer le long d'une vis-mère (3) selon deux directions longitudinales. L'écrou possède un ou plusieurs éléments de flexion (10, 12, 14) longitudinaux, chacun ayant une extrémité fixée à l'écrou et l'autre flottant librement. Les extrémités flottantes des éléments de flexion comportent un filetage interne correspondant au filetage (43) de la vis (3). L'extérieur des extrémités flottantes présente des profils inclinés (16, 18, 20). Un élément de compression flexible, en l'occurrence un joint torique (50), entoure lesdits profils (16, 18, 20) de manière à comprimer continuellement le filetage au niveau de l'extrémité flottante pour le faire venir au contact du filetage de la vis. Une gaine (28) réglable pousse le joint torique contre les profils inclinés avec une force variable, de façon à augmenter ou réduire la force avec laquelle le filetage des éléments de flexion (10, 12, 14) vient au contact du filetage (43) de la vis (3).
Erikson Keith W.
Erikson Kenneth W.
Kerk Motion Products Inc.
Ogilvy Renault
LandOfFree
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