Adapted toe-piece of a ski binding for also allowing walking uphill

An adapted toe-piece of a ski binding, comprising:

• a base which is fixable to a ski so that in a ski descent configuration with the base fixed to a ski it is possible to ski downhill;
• first elastic means which are borne by the base;
• a first clamping member which is borne by the base, which is rotatable with respect to a first rotation axis and which is provided with a first jaw;
• a second clamping member which is borne by the base, which is rotatable with respect to a second rotation axis and which is provided with a second jaw;
• wherein in the ski descent configuration and when the base is fixed to the ski:
• the first jaw assumes a first abutting position able to abut a first lateral portion of the tip of a ski boot, and can elastically retract with respect to the first abutting position, by rotating with respect to the first rotation axis, if solicited by the tip of the ski boot against the action of the first elastic means;
• the second jaw assumes a second abutting position able to abut a second lateral portion of the tip of the ski boot, opposite the first lateral portion of the tip of the ski boot, and can elastically retract with respect to the second abutting position, by rotating with respect to the second rotation axis, if solicited by the tip of the ski boot against the action of the first elastic means;
• wherein:
• the first clamping member is provided with a third jaw;
• the third jaw is provided with a first pin able to insert in a first hole fashioned in the tip of a ski boot;
• the second clamping member is provided with a fourth jaw;
• the fourth jaw is provided with a second pin able to insert in a second hole fashioned in the tip of the ski boot;
• further comprising:
• a first rotatable support which:
• is borne by the base;
• rotatably bears the first clamping member with respect to the first rotation axis;
• is rotatable about a third rotation axis, thus being able to assume a first rotation position so that the first jaw is in the first abutting position;
• a second rotatable support which:
• is borne by the base;
• it rotatably bears the second clamping member with respect to the second rotation axis;
• it is rotatable about a fourth rotation axis, thus being able to assume a second rotation position so that the second jaw is in the second abutting position;
• wherein the first rotatable support can also assume a third rotation position and the second rotatable support can also assume a fourth rotation position, so that by interposing the tip of the ski boot between the third jaw and the fourth jaw at a predetermined position, the rotation of the third jaw with respect to the first rotation axis can determine the inserting of the first pin in the first hole of the tip of the ski boot, and the rotation of the fourth jaw with respect to the second rotation axis can determine the inserting of the second pin in the second hole of the tip of the ski boot;
• further comprising blocking means which when:
• the base is fixed to the ski;
• the first rotatable support is in the third rotation position;
• the second rotatable support is in the fourth rotation position;
• and the tip of the ski boot is in the predetermined position between the third jaw and the fourth jaw, the blocking means are activatable to block the third jaw and the fourth jaw in angular blocking positions in which the first pin is inserted in the first hole of the ski boot and the second pin is inserted in the second hole of the ski boot, making walking uphill possible.