DE1204985B - Safety toe piece for ski bindings - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. α .:

Number:
File number:
Registration date:
Display day:

A63c

German class: 77 b -9/08

1204985
M52699Ic / 77b
April 30, 1962
November 11, 1965

It is already a safety toe piece that swings out to the side when excessive torque occurs Known for ski bindings in which a pivot member is fixed to the ski around one connected, perpendicular to the ski surface bearing bolt is pivotable and at least one support and / or sole holder member on the pivot member by means of a hinge pin perpendicular to the ski surface is pivotably articulated, with between the pivot member and a firmly connected to the ski Component at least one spring-loaded ball locking device is effective and that Support and / or sole holder member is held in its normal position by spring pressure. With the known Safety jaws of this type is a spiral spring acting in the vertical direction for the Ball locking device and another spring device acting in the horizontal direction required, which holds the support and / or sole holder member in its normal position.

If the last-mentioned link is designed in two parts, in order to also cover part of the sole side edges grip around, but not the release of the foot when the excessive torque occurs Safety toe piece for ski bindings

Applicant:
Hannes Marker,
Garmisch-Partenkirchen, Alpspitzstr. 37

Named as inventor:

Hannes Marker, Garmisch-Partenkirchen

got to. On the other hand, it is sufficient to hold the support and / or sole holder member in the normal position the positive contact of its front approach against the rear face of the spring block without ao that the elastic material in normal position too would have to be prestressed in the horizontal direction. When releasing the safety jaw while overcoming the resistance of the ball locking device is the pivot member in the direction of the occurring

to prevent, so can even two pivoted in a horizontal torque, while the support direction Acting spring devices required and / or sole holder member at the same time in opposition. Due to the large number of direction required for this, it is pivoted around its hinge pin and Individual parts, the price of the safety baking is thus enabled without a release of the foot not insignificantly more expensive, especially since this would first have to be pushed backwards, agreement of the individual parts a high workload 30 Here is the front approach of this link makes necessary. elastically incorporated into the material of the spring block

These disadvantages are according to the invention in a safety toe piece of the type described at the beginning avoided in that the pivot member is designed as a two-part housing, in its interior at least one block made of rubber or under prestress in the vertical direction elastic plastic is arranged, the lower surface of which is preferably a sheet metal disc with the

Latching ball interacts and the rear end 40 of which is inserted into the housing of the double-jointed safety surface at least positively against a rubber block over the jaws, the hinge pin protrudes to the front of the support
and / or sole holder member is applied. The inventive

pushes, whereby this is pretensioned and the support and / or sole holder member in the normal position as soon as the burden is removed. It has long been known for ski bindings to generate a spring pressure in a certain direction instead of a metal spring Use a spring made of rubber or elastic plastic. According to the invention, however, by

used, in production and assembly, that both the spring pressure in the vertical direction, which determines the release torque of the jaw, as well as the spring pressure in the vertical direction

Inexpensive spring block takes over the function of all up-45 ing that the sole holder is in its middle position Metal springs that were necessary because its hold and after the deflection when falling into them elastic spring force returns simultaneously in the vertical and middle position, by one and the same also acts in the horizontal direction. Is applied to the ball spring element, creating the double locking device the spring block with preloaded articulated safety jaws must be compared to the known Act elasticity because the locking ball with a 50 th jaws of this type in terms of effort the amount of the critical torque corresponding manufacturing costs and assembly time extraordinarily corresponding force to be pressed into the locking pan is improved.

509 737/56

In a further embodiment of the invention, the bias of the spring block by means of a a vertical threaded bolt screwable and one arranged on the upper compartment of the spring block Adjusting nut overlapping the pressure plate can be changed. The adjusting nut can be on the seated with a threaded bearing bolt itself, and the upper wall part of the two-part Housing can serve as a pressure plate. Furthermore, the support and / or sole holder member can be known per se Way to be height adjustable on the threaded hinge pin. According to the invention can be arranged in front of and behind the bearing pin a ball locking device without as a result, the price of the safety toe piece increased significantly because it was still only one spring block and only one adjustment device is required. Finally, can in further perfection of the invention around the hinge pin, independently of one another, a resting against the front edge of the sole Support member and two each one part of the sole front and side edge overlapping Sole holder parts can be pivoted, all of which have lugs protruding forward over the hinge pin rest against the rear face of the spring block.

The invention is explained in more detail in the following description with reference to the drawing, in which two embodiments are shown. In the drawing shows

F i g. 1 is a perspective view of the invention Safety baking,

FIG. 2 shows a vertical section along the line H-II according to FIG. 3,

3 shows a horizontal section along the Linielll-III of Fig. 2;

Fig. 4 shows a partially sectioned plan view to a second embodiment shown in

F i g. 5 is shown in vertical section.

In the case of the FIG. 1 to 3, the first exemplary embodiment shown is approximately triangular on the ski 1 Base plate 2. fastened by means of screws 3. In the middle of the base plate 2 is the bearing pin 4 riveted. To the bearing pin 4, a pivot member is mounted laterally pivotable, which in the consists essentially of a two-part housing, the shell-shaped housing halves at 5 and 6 are shown. The lower housing half 6 is overlapped by the collar 7 of the bearing pin 4 and secured against lifting off the base plate 2. The ones provided on the upper part of the bearing pin 4 Thread height-adjustable adjusting nut 8 in turn engages over the upper housing half 5 and allows adjustment of the distance between the two housing halves from one another in the vertical direction. For this purpose, its threaded hole is designed as a blind hole, and that of the upper housing half 6 overlapping head has an adjustment slot which is expediently so wide that the nut 8 means of a coin can be adjusted.

Between the two housing halves 5 and 6 there is a rubber block 9 which essentially fills the entire cavity between the housing halves. Against the bottom surface of the rubber block 9 there is a pressure plate 10, which is determined by the respective setting of the nut 8 the elastic bias of the rubber block 9 is transferred to the locking balls 11, which are inserted into holes 12 the lower housing half 6 are arranged and engage in locking pans 13 of the base plate 2. Of the Rubber block 9 encloses the bearing pin 4, the collar 7 and the adjusting nut 8 with a large distance, so as not to hinder the pivoting movement of the pivoting member.

Bn the rear area of the pivot member, the hinge pin 14 is rotatable on the lower housing half 6 riveted, the head of which is provided with an adjustment slot through a hole in the upper one Housing half 5 extends. The support member 15 is screwed onto the thread of the hinge pin 14, which has a sole hold-down device 16. The binding is supported against the support member 15 during use the front edge of the shoe sole from which the sole hold-down 16 overlaps and on the ski is being held. Two retaining prongs 17 engage in the front edge of the shoe sole and secure this against lateral displacement. The after

ao at the front over the hinge pin 14 extending extension 18 of the support member 15 is at the front with a provided flat support surface which is supported against the rear face of the rubber block 9.

In the normal position of the safety jaws, the locking balls 11 are set by the elastic bias of the rubber block 9 pressed with great force into the locking pans 13, whereby the safety jaws is held in its middle position. The support member 15 is also in its central position held because the support surface of the projection 18 form-fit against the rear face of the rubber block 9 is applied. If excessive torque occurs on the foot during a fall, the the pivot member pivoted in the direction of the torque, if this is strong enough to the Guide locking balls 11 out of the locking pans 13 while overcoming the resistance of the rubber block 9. The support member 15 resting against the leading edge of the sole is in the opposite direction around the Hinge pin 14 is pivoted, with one edge of the projection 18 elastically deforming the rubber block 9. The elastic restoring force of the rubber leads the support member 15 back to its central position as soon as the foot has come loose from the binding.

The F i g. 4 and 5 show a modified embodiment of a support and sole holder member, that in connection with the otherwise unchanged safety toe piece according to FIG. 1 up to 3 can be used. It is designed in three parts and has a retaining prong 17 Support member 15 'and two sole holder parts 16' and 16 "which together form the entire leading edge of the sole and optionally overlap part of the sole side edges. When attaching the foot A secure centering is thereby achieved in the binding; in addition, tilting forces are wide recorded outside. The sole holder halves 16 ' and 16 ″ can be pivoted relative to one another and against the support member 15 ′ and on the hinge pin 14 screwed on, adjustable in height. Their bearings are, for example at 20, flattened and one above the other arranged and are just like the support member 15 'by the abutting against the rubber block 9 Lugs 18 'and 18 "held in their normal position. At the free ends of the sole holder halves 16 'and 16 "can be provided downwardly protruding retaining tabs 19 against the edge of the sole issue.

Claims (6)

Patent claims: 1. If excessive torque occurs, the safety toe piece swings out to the side for ski bindings, in which a swivel member is attached to the ski and is perpendicular to the ski surface Bearing bolt is pivotable and at least one support and / or sole holder member on the Pivoting member is pivotably articulated by means of a hinge pin perpendicular to the ski surface is, wherein between the pivot member and a component firmly connected to the ski at least a spring-loaded ball locking device is effective and the support and / or sole holder member is held in its normal position by spring pressure, thereby characterized in that the pivot member is designed as a two-part housing in which Interior from a block that is at least in the vertical direction under tension Rubber or elastic plastic is arranged, the lower surface of which preferably has a Sheet metal disc interacts with the locking ball and its rear end face at least positively against one of the hinge pins protruding from the projection of the support and / or sole holder member. 2. Safety toe piece according to claim 1, characterized in that the bias of the spring block by means of a screwable on a vertical threaded bolt and a on the upper surface of the spring block arranged pressure plate overlapping adjusting nut is changeable. 3. Safety toe piece according to claim 2, characterized in that the adjusting nut seated on the threaded bearing pin and that the upper wall part of the two-part housing serves as a pressure plate. 4. Safety toe piece according to one of claims 1 to 3, characterized in that the support and / or sole holder member in a manner known per se on the one with a thread provided hinge pin is adjustable in height. 5. Safety toe piece according to one of claims 1 to 4, characterized in that A ball locking device is arranged in front of and behind the bearing pin. 6. Safety toe piece according to one of claims 1 to 5, characterized in that around the hinge pin, independently of one another, one resting against the leading edge of the sole Support member and two sole holder parts each overlapping a part of the front and side edges of the sole are pivotable, all of which have lugs protruding forward over the hinge pin rest against the rear face of the spring block. Considered publications:
French Patent No. 1290 897;
U.S. Patent No. 2,846,232. 1 sheet of drawings 509737/56 11.65 © Bundesdruckerei Berlin