DE1179140B - Safety binding - Google Patents

Description

Safety ski binding The subject of the invention is a safety ski binding, which holds the ski boot on the ski while walking, but the boot if too great a torsional force occurs, for example during a fall releases.

There are already known ski bindings in which a swivel link is locked in its position of use by a ball catch. Die, Kugelrast is released when a transverse force is exerted on the pivot link, which exceeds a certain minimum size. In this case the ball catch jumps suddenly disengages and just as suddenly releases the front bracket for the shoe free. This sudden release of the shoe is very uncomfortable and can lead to serious falls. If the shoe is released in the event of a fall the edge of the sole is also adjusted to a lateral pivoting position. If the shoe is then to be clamped back into the binding, it must first of all, all parts have been returned to their original position will.

The object of the invention is to create a performance a certain pivoting of the ski boot when smaller torsional forces occur, which do not require full approval. After this little swivel movement the boot should be pushed back into the normal position of use. This way, the disadvantages of releasing it entirely are avoided when there is it is just a matter of giving the boot a certain temporary freedom of movement to lend to prevent dangerous twisting of the foot. After a complete release of the ski boot, all parts of the ski binding should automatically return to the normal position of use, so that the skier can remove the boot can start again without any special preparation.

To solve this task, a safety ski binding is assumed, in which a support jaw for the front part of the ski boot is arranged on a sole plate is, which is longitudinally and rotatably mounted on the ski surface and with her front end with a pivoted at a distance in front of the sole plate on the ski The pivot member is articulated and in which a spring-loaded detent for the pivot member is provided that holds this in a position in which the pivot member in turn holds the soleplate in that position of use in which the soleplate in The middle position is shifted lengthways to the rear end of the ski. The invention consists in that the fastening jaw for the shoelace boot tip at the front end of the sole plate is arranged and the detent is designed such that the spring is in each pivot position of the pivot member a force urging the pivot member into the position of use the. Swivel member exercises.

In a preferred embodiment, the pivot plate is means. a recess at the rear end of the plate dutch gripping pin on the Fastened ski, the recess is designed so that the plate is longitudinally displaceable and follows the angular displacements of the boot around the vacation axis.

With reference to the drawing, embodiments of the invention Ski binding described in more detail. It shows F i g. 1 is a plan view of a ski binding according to a first embodiment, FIG. 2 shows a side view of the embodiment according to FIG. 1, Fig. 3 is a plan view of a ski binding after a second Embodiment, FIG. 4 shows a side view of the exemplary embodiment according to FIG i g. 3 and F i g. 5 is a plan view of a third embodiment.

The ski binding according to the fig. 1 and 2 consists of a rigid Plate 1, e.g. B. a metal plate that the front part of the too fastening boot C serves as a support. This plate is through on the ski fastened the flat head 2 of a screw 3 stuck in the ski, which through a recess 4 in the rear part of the plate 1 extends through it. The recess has a triangular shape and its apex is directed forward. In the normal In the position of use of the plate 1, see the screw 3 near the apex the recess 4.

At the front end of the plate 1, a pivot pin 5 is attached to which engages with one end of a parallel to the ski pivot member 6 that with the other end on a pivot pin fastened in front of the plate 1 on the ski 7 is stored. This pivot pin can by means of a base plate 8 by means of screws 9 must be attached to the ski.

The front part of the pivot member 6 is provided with a longitudinal bore, in which a slide 10 is mounted, which is loaded by a compression spring 11. This is supported with the rear end against a closure body 12. The head of the slide 10 is in this way against a flattening acting as a cam 13 pressed on the front of the pivot pin 7. The flattening lies in one perpendicular to the Schiachse plane, so that by the resilient pressing of the slide 10, the pivot member 6 is held in the slide axis. This will also the plate 1 is normally held in such a position that its longitudinal axis coincides with the axis of the ski.

The plate 1 carries on the front end a support jaw for the front Part of boot C, the heel part of which is attached to the ski by means> who strive to move the boot forward. The support jaw consists preferably of a sickle-shaped body 14, the front edge of the sole of the boot C is adapted and along the upper edge a horizontally preceding one Bead 15 carries, which engages over the upper edge of the sole. This support jaw is loose mounted on a pivot pin 16 projecting at right angles from the plate 1, the something behind the pivot pin 5 is attached to the plate.

The ski binding according to the invention is also provided with a rotatable bearing plate 17 provided, which is intended to serve as a support for the heel part of the boot C. This bearing plate consists of a ring-shaped metal disc that is attached to your ski by means of a Screws fastened disc 18 is held. The bearing plate can relate to this Rotate wise around its center O. It preferably carries the fastening means of the heel part, which for example consists of a hinged bracket 19 with a lever clamp 20 exists. The fasteners can also be made of a long belt or od. like. exist.

To clamp the boot C, it is sufficient to press the front edge of the sole against to press the support jaw 14 and then to apply the rear fastening means 19. That way. The boot that is pushed forward is then held in place by the support jaw 14 recorded. The heel part of the boot rests on the bearing plate 17 while the boot sole lies on the plate 1.

When an approximately in the direction of arrow f 1 occurs on the foot exerted torsional force is the boot around the heel part, but especially around the center O of the bearing plate 17 is pivoted. The plate 1 follows this movement of the Boot due to the special design of the recess 4, which pivoting the plate around the center O allows.

During this pivoting, the pivot member 6 is also in the opposite Direction pivoted around the pin 7 because it is through the pivot pin 5 with the front End of the plate is connected. However, the pivoting of this pivot member causes a small advance of the plate 1, because the rear end .mit the pivot pin 5 describes an arc around the fixed pivot pin 7. The special one Design of the recess 4 allows this advance of the plate 1 during the Swivel movement.

If the torsional force applied to the foot is no longer great, the boot C is pivoted with the bearing plate 17 and the plate 1, but is held on this plate by the front support jaw 14 . When the torsional force ceases, the retraction device formed by the spring 11, the slide 10 and the cam 13 engages in order to bring the pivot member 6 back into the longitudinal axis of the ski, the pivot member also returning the plate 1 and the boot to the normal position Returns to the position of use. In this case, the safety binding according to the invention allows the boot to be swiveled out to a limited extent, so that injury to the ankle due to the torsional force is avoided. This result is achieved without completely releasing the boot, so that it is not necessary to reinsert the boot or to operate the fastening means.

If, on the other hand, the torsional force exerted on the foot is very large, the plate is pivoted through a larger angle and also advanced further with the support jaw 14 , which is effected in the manner already described by the pivoting movement of the pivoting member 6 in the opposite direction. As a result of the greater pivoting movement of the plate 1 and the greater advance of the support jaw 14 , the front part of the boot then disengages from the support jaw 14 and is thereby completely released. This complete release is now made possible by advancing the supporting jaw 14 with the plate 1. Without this advance the boot would be pressed further against the support jaw 14 by the rear fastening means, and the lateral evasion could only take place with difficulty. After the support jaw 14 has been pushed forwards, however, the boot is given a certain amount of leeway despite the pressure exerted by the rear fastening means.

From a pivoting angle of the plate 1 onwards, the boot can therefore easily give way because the support jaw 14 is advanced sufficiently far.

The lateral evasion of the boot is facilitated by the fact that the support jaw 14 is loosely mounted on the pivot pin 16.

Upon complete release of the boot, the pivot link causes 6, which is influenced by the retraction device 11, 10 and 13, the automatic Return of the plate 1 to the normal position of use. The different parts of the Ski bindings return automatically to the starting position, so that the skier den Boots can be put back without even the To bring parts of the ski binding back into the correct position.

One or more metal layers are preferably located below the plate 1 21 fixed on the ski to reduce the friction of the plate 1 during the pivoting and advancing movements to reduce and thereby facilitate these movements.

The F i g. 3 and 4 show another embodiment in which the hinge axis of the rear end of the pivot link with the pivot axis of the support jaw matches. In this embodiment, the swivel plate 1 a carries on the front Only one end of a vertical pin 16a, on which the support jaw 14a is mounted on the one hand is and on the other hand also engages the rear end of the pivot member 6 a.

For this purpose, the rear end 6 b of the pivot member 6 is extended by two horizontal legs, between which the front extension 14 b of the support jaw 14 a is mounted on the sole pivot pin 16 a, which simultaneously passes through the two legs 6 b.

This arrangement works in exactly the same way as that according to FIGS. 1 and z. When a torsional force occurs, the endeavor has to twist the foot in the direction of the arrow f 1, namely the plate 1 a is pivoted in this same direction with the boot C, while the pivot member 6 a in the opposite direction f_, about the pin 7 is pivoted. Through this is also exactly as in the previous case, a feed of the plate 1 a with the support jaw 14 a generated. This advance facilitates when a large torsional force occurs the evasion of the front part of the boot.

F i g. 5 shows a modification of the embodiment according to FIGS. 3 and 4. The pivot member 6 c, which connects the front part of the pivot plate 1 a with the ski, is not permanently connected to the support jaw 14 a by the pin 16 a in this case. For this purpose, the two legs 6 b of the pivot member are provided with a rearwardly open slot 6 d, in which the corresponding parts of the pin 16a engage. In this case, the swivel plate 1 a can be completely detached from the swivel member 6 c when this plate deviates strongly to the outside. During the use of the device, however, the pivot member 6c remains in engagement with the pin 16a of the plate 1a and thus also causes the resilient return to the normal position of use both after a limited evasion of the boot with this plate and after the complete release of the Boots.

Since the inventive arrangement of the boots on a swivel plate rests that moves with it, the pivoting and pushing movements are not carried out friction between the sole and the ski is inhibited, as is the case with other devices this is the case when the boot simply rests against a support jaw mounted on the ski and rests on the ski without further ado.

The transverse metal rails 21 which are below the pivot plate are provided, now help to reduce friction even further. That limited evasion and the complete release of the boot will not be disturbed by unwanted friction. Of course, the inventive Ski bindings are not restricted to the embodiments cited only as an example.

The resilient retraction device that is the front end of the swivel plate connects with the ski can be replaced by equivalent means. The slider and the compression spring could be arranged on a fixed base, and the cam 13 would then be firmly connected to the pivot member. This cam could also be provided on a pin firmly connected to the pivot member, the this would then serve as a pivot pin. However, as mentioned earlier, the resilient retraction device can be replaced by other suitable means.

Also the means for connecting the rear end of the pivot link with the front end of the pivot plate could be formed in other ways.

The support jaw provided on the front end of the pivot plate can also be replaced by a one-part or multi-part abutment that is mounted on the Plate is stuck or pivoted.

The screw 3 of the flat head 2 and the recess 4 of the swivel plate can be replaced by other means that connect the rear Cause the end of the plate and this at the same time a certain freedom of movement lend to pivot and advance. Finally, the rear bearing plate can 17 may be removed, provided that the means of attachment of the rear part of the boot allow this a certain amount of freedom to pivot.

Claims (7)

Claims: 1. Safety ski binding with a support jaw for the ski boot front part is arranged on a sole plate, the lengthways and is rotatably mounted on the ski surface and with its front end with a pivoting member pivotably mounted on the ski at a distance in front of the sole plate is articulated and provided with a spring-loaded detent for the pivot member is that this holds in a position in which the pivot member in turn the Holds the sole plate in the position of use in which the sole plate is in the central position is shifted lengthways towards the rear end of the ski, thus that the fastening jaw (14) for the ski boot tip at the front end of the sole plate (1) is arranged and the latch is designed such that the spring (11) in each The pivoting position of the pivoting member (6) is the pivoting member in the position of use exerts urging force on the pivot member. 2. Safety ski binding according to claim 1, characterized in that the swivel plate (1, la) is attached to the ski (S) by means of a recess (4) at the rear end of the plate (1, l a) penetrating pin (3), wherein the recess (4) is designed so that the plate (1, la) is longitudinally displaceable and thereby follows the angular displacements of the boot about the vacation axis. 3. Safety ski binding according to claim 1, characterized in that that the supporting jaw (14) of the front edge of the sole at a perpendicular on the front end of the pivot plate (1) attached pin (16, 16a) is rotatable. 4. Safety ski binding according to claim 1 and 3, characterized in that for rotatable mounting of the front jaw (6) and the support jaw (14) on the swivel plate (1) two different pins (5, 16) are arranged, the bearing pin (5) the front jaw (6) lies in front of the bearing pin (16) of the support jaw (14). 5. Safety bindings according to claim 4, characterized in that the pivotable front jaw (6 a) and the support jaw (14 a) fixed on a common, on the pivotable plate (1 a) Pin (16 a) are mounted. 6. Safety ski binding according to claim 5, characterized in that the pivotable front jaw (6a) is connected to the common pin (16a) so that when the safety binding is triggered, the front jaw (6a) remains connected to the common pin (16a). 7. Safety ski binding according to claim 5, characterized in that the pivotable front jaw (6c) is released from the common pin (16a) when the plate is angularly displaced beyond the point causing the release of the boot. Documents considered: German utility model No. 1812 157; French Patent No. 1188 922; "Sports needs", August 1955, p. 408.