Ski binding device for fastening a mountaineering boot on a downhill ski

摘要

A ski binding device for fastening a boot on a ski is described. The device includes a toepiece and a heelpiece fixed to the ski and structured to selectively retain the boot. The heelpiece includes a turret and a hooking projecting appendix (“HPA”) that juts out from the turret towards the toepiece while remaining substantially parallel to a first reference axis. The turret having a lower casing which is fixed on a fastening base of the toepiece and a titlable upper casing resting hingedly connected thereto to the lower casing. The HPA protrudes from the titlable upper casing while remaining substantially parallel to the first reference axis, and the heelpiece includes a programmed-release locking means structured to lock and retain the upper casing until the titling torque transmitted to the upper casing exceeds a predetermined threshold value.

主权项

1. A ski binding device for fastening a mountaineering boot on a downhill ski comprising:
a toepiece and a heelpiece which are adapted to be rigidly fixed on the back of a ski, aligned along a ski longitudinal axis (L), and are structured so as to selectively retain respectively a front part and a rear part of a shell of a boot; the toepiece being provided with a clamping member which is structured for selectively clamping and stably retaining the front part of the shell, and at the same time allowing the shell to pivot freely on the toepiece about a boot rotation axis (A) which is substantially perpendicular to the ski longitudinal axis (L); the heelpiece comprising a fastening base structured for being rigidly fastened on the back of the ski; a turret which protrudes upwards from the fastening base; and a hooking projecting appendix that juts out from the turret towards the toepiece while remaining substantially parallel to a first reference axis (C) substantially aligned to the ski longitudinal axis (L), and is structured so as to couple to the rear part of the shell to stably retain the heel of the boot in abutment on or close to the back of the ski, therefore preventing any rotation of the boot on the toepiece about said boot rotation axis (A); the ski binding device being characterized in that the turret of the heelpiece is subdivided in a lower casing which is fixed on the fastening base, and in a tiltable upper casing that rests on the top of the lower casing, and is hinged on the lower casing so as to freely rotate about a second reference axis (D) substantially perpendicular to said first reference axis (C); the hooking projecting appendix of the heelpiece protruding from the tiltable upper casing while remaining substantially parallel to said first reference axis (C), and the heelpiece being also provided with programmed-release locking means which are structured so as to lock and retain the tiltable upper casing in abutment on the lower casing of the turret with the first reference axis (C) arranged substantially parallel to the ski longitudinal axis (L), until the tilting torque transmitted to the tiltable upper casing exceeds a predetermined threshold value.