DE2214091C3 - Toe piece for a safety ski binding - Google Patents

Description

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The invention relates to a toe piece for a safety ski binding with one on one ski-mounted, a spring-receiving housing pivotably mounted sole hold-down, which with an approach directly with one loaded by the spring and in the housing on its outer edge guided piston or slide cooperates.

In a known toe piece for safety bindings of this type (DT-OS 20 20 954), the Approach teeth that engage in corresponding recesses in the piston or slide. At this Embodiment is the interaction of approach and piston or slide in the pivoting essentially limited to the middle area, thereby restricting the pivoting and the return of the sole hold-down occurs.

The object of the invention is to create a safety ski binding that is as simple as possible and that is wide The sole hold-down device can be swiveled out, with one also in the outermost swiveled-out position Restoring force is present, which returns the sole retainer to the position of use after the release process returns.

This object is achieved according to the invention in that the approach of the sole hold-down when Pivoting the same in the edge area of the piston

55 or slide. When the sole hold-down is pivoted, this configuration leads to greater spring travel and thus to a sufficient restoring force even from the outermost pivoted position and also to more favorable release characteristics with a softer spring.

Further developments of the invention emerge from the subclaims.

The invention is illustrated in the drawing, for example, in which shows

F i g. 1 shows a bottom view of the front jaw according to the invention with the base plate removed and

2 to 4 partial bottom views of further embodiments.

A housing 1 of a front jaw for a safety ski binding is not shown Base plate covered and screwed onto a ski in a position rotated by 180 °. A sole hold-down 2 can be swiveled out laterally in the housing 1 about a fixed vertical axis 3. The sole hold-down 2 is with a short approach 6 in direct connection with a piston or slide 4, which is in Housing 1 is longitudinally displaceable against the action of a spring 8. The pressure of the spring 8 is in on is regulated in a known manner by means of an adjusting screw 9, di-j with its thread in a square support plate 7 engages, so that when you turn the adjusting screw, the spring 8, which is with its other The end is supported on the piston or slide 4, more or less tensioned.

According to the embodiment shown in Fig. 1 embodiment, the sole clamp 2 at its neck 6 round teeth 5a which engage the piston or slider 4 in corresponding circular grooves 5b. If an excessive twisting force acts on the sole hold-down 2, it can swing out in the directions of the arrows χ or y , the round teeth 5a partially leaving the grooves 5b. Here, the piston or slide 4 is pushed back in direction ζ. When the twisting force acting on the sole hold-down 2 subsides, the sole hold-down 2 springs back automatically into the normal position shown.

In the case of the in FIG. In the embodiment shown in FIG. 2, the grooves 5b are omitted. The piston or slide 4 is thus smooth. The round teeth 5a are supported directly on the smooth pressure surface 5c of the piston or slide 4. The function is analogously the same as in FIG. 1.

Instead of the round teeth 5a, 2 rollers can be mounted on the shoulder 6 of the sole hold-down device, as a result of which instead of the sliding process, a rolling on the slide that consumes even less frictional forces or piston 4 takes place.

According to FIG. 4, round teeth 5a, which are provided in the edge region of the projection 6, interact with inclined surfaces 5d in the edge region of the piston or slide 4.

A particularly simple embodiment is shown in FIG. 3 shown, in which a smooth-surfaced approach 6 interacts with an equally smooth-surfaced pressure surface 5c of the piston or slide 4. At this particularly simple embodiment is based on the outer edge of the approach 6 with the beginning of The pivoting process starts in the outer edge area of the piston or slide and is in the position of use just on the piston or slide 4.

1 sheet of drawings

Claims (5)

Patent claims: 1. Toe piece for a safety ski binding with a spring attached to a ski - Receiving housing pivoted sole hold-down device, which is directly connected to an approach with one loaded by the spring and im '! Housing on its outer edge guided piston' or slide cooperates, characterized in that that the shoulder (6) of the sole hold-down device (2) when it is pivoted in the edge area of the piston or slide (4) supports. 2. Toe piece according to claim 1, characterized {characterized in that the shoulder (6) of the Sole hold-down device (2) in the edge area tooth-like, contact elements (5a) are provided, which are round or are designed with a straight surface. 3. Toe piece according to claim 1, characterized in that the projection (6) of the sole hold-down device (2) has contact elements designed as rollers in the edge area. 4. Toe piece according to claim 2 or 3, characterized in that the contact elements (5a ) engage in correspondingly formed grooves (5b) of the piston or slide (4) or cooperate with a smooth-surfaced (5c) piston or slide (4). 5. Front jaw according to one of claims 1 to 3, characterized in that the piston or slide (4) in the edge region has outwardly beveled pressure surfaces (5b) .