| 摘要 |
A heel holddown for a ski binding has a support formed with two lateral forwardly downwardly inclined grooves in which are received gudgeons carried on the ends of arms of a clamp which presses a skiboot heel against the face of a ski. In the middle of the clamp there is a throughgoing transverse pin which lies in one of a plurality of peripheral angularly equispaced notches formed in a barrel which is rotatable in the support about an axis parallel to the ski face and perpendicular to the longitudinal direction of the ski. The barrel is formed of a pair of peripherally notched disks bridged by a plurality of angularly equispaced rods. A ball is urged by a spring radially toward the rods so as to hold the barrel in any of a number of predetermined angular positions corresponding to the number of rods. The barrel will therefore return to the angular position it is in so long as it is not rotated against the spring force from this position through an angle greater than half of the angular distance between rods, in which case the heel clamp will flip up and the pin will index the barrel into the next position. A heel plate adapted to lie between the skiboot heel and the ski face is pivoted on the support and linked to the pin so that it also flips up when the clamp does, and allows the user to reset the holddown by stepping on the heel plate. |
