Front insert for a ski mountaineering ski boot, for hooking the ski boot to a ski mountaineering binding

A front insert for a ski boot for ski mountaineering, for hooking the ski boot to a binding for ski mountaineering fixed to a ski and comprising a first hooking element and a second hooking element, facing one another, and movable between a splayed configuration, wherein the first hooking element and the second hooking element are in a splayed position with respect to one another to enable inserting there-between of a front part of a ski boot for ski mountaineering, and a neared configuration wherein the first hooking element and the second hooking element are in a neared position with respect to one another, in an operating plane that is transversal and perpendicular to a longitudinal axis of the ski, for hooking the ski boot, the insert being conformed so as to comprise:

• an anchoring body comprising two heads and having dimensions such that the two heads, when the insert is fixed to the ski boot, are positioned at lateral portions of the front part of the ski boot;
• a first housing, realised in the first head;
• a second housing, realised in the second head;
• a first contact element comprising a first hole which is conformed so as to have a coupling surface for coupling with the first hooking element;
• a second contact element comprising a second hole which is conformed so as to have a coupling surface for coupling with the second hooking element,
• the first housing and the first contact element are reciprocally conformed so that the first contact element is positionable with respect to the first housing so that the first hole is accessible from outside, and aligned with an alignment axis, and is positionable in the first housing in an internal position with the first hole aligned with the alignment axis;
• the second housing and the second contact element are reciprocally conformed so that the second contact element is positionable with respect to the second housing so that the second hole is accessible from outside, and aligned with the alignment axis, and is positionable in the second housing in an internal position with the second hole aligned with the alignment axis;
• the first housing and the first contact element are further reciprocally conformed so as to enable the first contact element to displace with respect to the first housing from the internal position towards the outside so that the first contact element can orientate and position with respect to the first housing so that the first hole misaligns from the alignment axis;
• the second housing and the second contact element are reciprocally conformed so as to enable the second contact element to displace with respect to the second housing from the internal position towards the outside so that the second contact element can orientate and position with respect to the second housing in such a way that the second hole misaligns from the alignment axis;
• wherein the insert is configured so that, before the ski boot is rested on the ski, the first contact element and the second contact element are arranged with respect to the first housing and the second housing so that the first hole in the first contact element and the second hole in the second contact element are aligned along the alignment axis, so that:
• when the ski boot is rested on the ski and positioned with the front part between the first hooking element and the second hooking element in the splayed configuration, the alignment axis of the first hole and of the second hole is aligned to the operating plane of the hooking elements so that the first hooking element and the second hooking element can be moved into the neared configuration for hooking the ski boot, with the first hooking element inserting in the first hole of the first contact element and with the first contact element in the relative internal position of the first housing and with the second hooking element inserting in the second hole of the second contact element and with the second contact element in the relative internal position of the second housing,
• and so that, following the hooking of the ski boot, at least one from between the first contact element and the second contact element, consequently to a rotation of the ski boot with respect to the longitudinal axis of the ski which determines a misalignment between the alignment axis and the operating plane of the hooking elements, can be pushed by the relative hooking element to perform a displacement from the internal position towards the outside of the first or second housing orientating and positioning itself with respect to the relative first or second housing in such a way that the relative first hole or second hole misaligns from the alignment axis, so as to remain in contact with the hooking element, thus guaranteeing the maintaining of the hooking of the ski boot.