Abstract: A ski boot heel binding having a cam member slidably disposed within a bore formed in the lengthwise direction of a main body is disclosed, wherein the cam member is connected to the front end of a rotatably mounted unlocking lever. The unlocking lever has an inclined shoulder at the upper portion thereof against which a fulcrum pin bears and which is fixed relative to the main body, whereby when the rear end of the unlocking lever is lifted, the fulcrum pin slides down relative to the shoulder with the result that the fulcrum point of the leverage is shifted so as to retract the cam member in a straight line along the bore and displace the binding to the heel releasing position.

Abstract: In a ski boot toe binding of the type in which a boot toe holding member is swingably connected to a pivotable body by a pair of arms, a slidable cam plate is provided between a base plate and the pivotable body. The arms are held in an inoperative position independent of the cam plate, while the toe holding member is in a toe holding central position and is swung from the central position through a predetermined stroke, to allow the cam plate to take a locking position where the pivotable body is immovably engaged with the base plate. The cam plate is moved in the lengthwise direction of the base plate by an arm after the toe holding member is swung beyond the predetermined stroke whereby it is moved to an unlocked position where the engagement between the pivotable body and the base plate is released to allow the pivotable body to rotate relative to the base plate.