Retaining device of a ski boot on a ski

A ski binding comprising:

• a base;
• a boot toe retainer which releasably engages and supports a ski boot toe, the toe retainer being pivotally mounted to the base for rotation about a vertical axis adjacent a front edge thereof, such that the toe retainer pivots between a skiing position in which the boot toe is retained and a release position in which the boot toe is released;
• at least one detent extending downward from the toe retainer rearward of the pivot axis along a longitudinal axis;
• a pair of activating arms pivotally connected at front ends to the base between the pivot axis and the detent symmetrically to opposite sides of the longitudinal axis, the detent engaging both actuating arms in the skiing position and engaging only one of the arms in the pivoted boot toe releasing position;
• and
• a biasing element which biases a rearward portion of the actuating arms together to bias the toe retainer into the skiing position and which resiliently yields under lateral pressure allowing the toe retainer to pivot to the release position.