Land vehicles – Skates – Shoe attaching means
Patent
1990-03-26
1991-06-18
Marmor, Charles A.
Land vehicles
Skates
Shoe attaching means
280634, A63C 9084
Patent
active
050244574
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention relates to a safety ski binding with a heel unit.
DESCRIPTION OF THE PRIOR ART
A safety ski binding of this kind is known from CH-PS 417 433. In order to move this known heel unit by hand from its closed position into an open position the hand opening lever is pressed downwardly against the bias force of the release spring, whereby the latch projection is brought out of the pivotal range of the culmination point of the cam track and the sole holder can be pivoted upwardly free of force. This intentional pivoting of the sole holder into the open position can either be brought about by lifting the heel region of the ski boot or, when the ski boot is not in engagement with the ski binding, by hand. In order to facilitate the intentional upward pivoting of the sole holder into its open position it is also known to provide an additional opening spring which acts on the sole holder and exerts a small bias force in the direction towards the open position of the sole holder.
With this arrangement it is disadvantageous that an additional component is necessary in the form of an opening spring which requires additional installation costs and is sensitive to corrosion.
SUMMARY OF THE INVENTION
The invention is based on the object of providing a heel unit for a safety ski binding in which, despite simple and cost-favorable, construction, the sole holder can be reliably pivoted into its open position.
During the opening movement, as a result of this construction, the hand opening lever initially leads the sole holder which remains in the close position until the actuating abutment and the counter-abutment come into engagement, whereupon the sole holder pivots into the opening direction and indeed faster than the hand opening lever as the culmination point moves ever closer to the latch projection until the latch projection again enters into engagement with the cam track shortly before reaching the culmination point. The further pivotal movement of the hand opening lever would now be blocked by the abutments which operate between the hand opening lever and the sole holder if these abutments, or at least one of them, were not made resilient. The further pivoting of the hand opening lever until the latch projection slides over the culmination point is however possible while compressing the resilient abutments, whereby an additional bias force is generated which acts directly on the sole holder and brings about a turning moment in the direction towards its open position. As soon as the latch projection has exceeded the culmination point the resilient abutments or resilient abutment relax(es), and the sole holder snaps into its open position on releasing the hand opening lever.
In this way no additional opening spring is necessary between the housing and the sole holder, whereby the heel unit can be manufactured more simply and at more favorable cost. Moreover, in the closed position of the sole holder there is advantageously no force--not even a small force which acts in the direction of the opening position so that the bias force of the release spring is not falsified.
An advantageous embodiment of the invention is characterized in that the distance between the first transverse axle and the culmination point amounts to 1.5 to 4 times, preferably 2 to 3 times and in particular 2.5 times the distance between the point of action of the actuating abutment and the first transverse axle. With such dimensioning of the distances particularly favorable force and speed conditions are present between the sole holder and the hand opening lever.
Further advantageous embodiments of the invention are evident from the subordinate claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be explained in the following by way of example and with reference to the drawing in which are shown:
FIG. 1 a partly sectioned side view of a heel unit in the closed position,
FIG. 2 a side view of the heel unit in a half open position shortly before reaching the culmination point,
FIG. 3 a side
GEZE Sport International GmbH
Johnson Brian L.
Marmor Charles A.
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