Ski binding

A front ski binding assembly (1) for a ski board (S), the assembly comprising:

• a fastening platform (2) comprising fastening means (21) to fixedly mount said assembly on a ski board (S) upper surface, said platform (2) defining a longitudinal direction (L) and a transverse direction (T) perpendicular to the longitudinal direction;
• a front boot-retaining mechanism (3) mounted onto said platform (2) for retaining a user's boot (B) in either a slope ascending or in a slope descending configuration, said boot-retaining mechanism (3) comprising:
• a front boot abutment wall (31) extending on said platform orthogonally to said longitudinal direction (L) thereof, and
• two first arms (32a, 32b) pivotally mounted each on a first arbor (33a, 33b) with respect to the platform (2) and the front boot abutment wall (31) at longitudinal ends of the front boot abutment wall (31),
• a lateral security release device (36) arranged in cooperation with first ends (34a, 34b) of the first arms (32a, 32b) to apply thereon a biasing force urging second ends (35a, 35b) of said first arms (32a, 32b) towards the longitudinal direction (L) of the platform (2) and to allow each of said first arms (32a, 32b) to rotate away from said longitudinal direction (L) about a respective first arbor (33a, 33b) upon application by a user's boot of a force higher than said biasing force on interior surfaces of said respective first arms (32a, 32b), and
• two second arms (37a, 37b) pivotally mounted about second arbors (39a, 39b), said two second arms comprising touring pins (40a, 40b) at respective ends of said second arms to engage corresponding mating members (B1, B2) on front end sides of a user's boot in a slope ascending configuration, said second arms (37a, 37b) being movable between an engaged-position where the touring pins (40a, 40b) are engaged with such said mating members (B1, B2) on a user's boot (B) and a disengaged position where the touring pins (40a, 40b) are disengaged from said mating members (B1, B2);
• said second arms (37a, 37b) being pivotally arranged on top of said first arms (32a, 32b) and lockable in said engaged and disengaged positions by a locking arrangement (5).