Land vehicles – Skates – Shoe attaching means
Patent
1990-03-02
1991-09-03
Mitchell, David M.
Land vehicles
Skates
Shoe attaching means
A63C 9081
Patent
active
050446576
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a safety ski binding having sole plate.
BACKGROUND OF THE INVENTION
A known safety ski binding is for example described in W082/02495 (see FIGS. 14, 15). The sole holders in this conventional ski binding are constructed as angle levers, each pivotal about a vertical axis, the one leg of which angle levers holds the ski boot sole, while each angle lever is pivotally supported on the other leg. The ends of the angle levers, which ends are directed toward one another, are connected hingedly with one another and are biased in loading direction of the ski binding by a torsion spring. The free ends of the angle levers are directed forwardly. During a pivoting of the sole plate, the free end of one angle lever comes into contact with a ski-fixed stop causing a horizontal pivoting of the angle levers and of the sole holders.
This known ski binding has the disadvantage that the front jaw consists of many individual parts movable relative to one another. On the one hand, this can cause friction forces, which are difficult to control, to occur at many points. On the other hand, the manufacture of a ski binding consisting of so many individual parts is also expensive. In particular this conventional ski binding requires, for the return of the locking elements and of the sole holder after a safety release, a return spring separate from the release spring mounted in the heel holder and controlling the lever movement. Furthermore, this conventional ski binding enables in the case of a bending of the ski, due to unevennesses in the terrain, only a slight longitudinal compensation before a jamming occurs.
A slightly different solution is known from Austrian Patent No. 372 867. The sole holders in this ski binding are supported in a skiing position on a ski-fixed abutment. This causes the abutments to apply an excessive pressure on the sole holders when the ski is bent, which pressure is transmitted by the sole holders onto the ski-boot sole. This can lead to stress/deformations and thus to worsened skiing characteristics and release values.
SUMMARY OF THE INVENTION
The goal of the present invention is to avoid the mentioned disadvantages and to provide a ski binding of the above-mentioned type which is compact and has a reduced number of individual structural parts. Furthermore, stress/deformations of the ski boot sole or rather a jamming of binding parts during a bending of the ski are to be reliably avoided.
The set purpose is attained according to the invention by constructing the locking and the control element to be pivotally supported on an axis arranged centrally between the sole-holder bolts on the sole plate to result in a compact design of the ski binding having a small number of structural parts. By arranging the rod-shaped control elements in a cavity of the longitudinally movable housing, a stress/deformation of the ski-boot sole or a jamming of the binding base plate is reliably avoided. A housing movably arranged in a longitudinal direction of the ski is known by itself from Austrian Patent No. 384 950.
BRIEF DESCRIPTION OF THE DRAWINGS
Further advantages and details of the invention will be described in greater detail in connection with the drawings, which illustrate one exemplary embodiment.
In the drawings:
FIG. 1 is a longitudinal cross-sectional view of the ski binding of the invention,
FIG. 2 illustrates the front jaw according to FIG. 1 in an enlarged scale,
FIG. 3 is a top view thereof, partially in cross section taken along the line III--III of FIG. 2,
FIG. 4 shows the front jaw with a partially pivoted sole plate,
FIG. 5 illustrates the front jaw at the release point, partially in cross section taken along the line V--V of FIG. 2,
FIG. 6 illustrates the front jaw after the release occurred, and
FIG. 7 illustrates the front jaw during the return movement.
DETAILED DESCRIPTION
The terms front, rear, left and right in the following description refer to the direction of travel of the ski binding, namely, front means directed toward the tip of
REFERENCES:
patent: 4735434 (1988-04-01), Sedlmair
patent: 4779891 (1988-10-01), Freisinger et al.
patent: 4861064 (1989-08-01), Stritzl et al.
patent: 4930802 (1990-06-01), Sedlmair
Brunnhuber Egon
Freisinger Henry
Mitchell David M.
TMC Corporation
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