EP1108453A2 - Ski-binding, especially for ski-jumping - Google Patents

Abstract

The binding has a front sole holder, a heel holder, a tension member connecting heel to ski, and an accessory to limit lift of the heel off the ski. The accessory unit (8) applies a spring force to the tension member (2), which is directed against the tension force, once a pre-set lift limit of the raised heel has been exceeded. The accessory is adjustable relative to the ski in tension direction of the tension member.

Description

The invention relates to a ski binding, in particular for ski jumping, with a front sole holder and a heel holding device that can be lifted off the ski, which comprises a tension member that can be moved in all directions and that forms the heel of the boot connects to the ski and a lifting of the boot heel allows up to a predetermined amount, which Tension member at this height from a predetermined value one pulling force acting on the heel of the boot to a greater length extendable against the resistance of an additional device is.

A ski binding of this type is known from EP 0 548 806 A2. In this known ski binding, the tension member is open a spring-loaded reel that wound up due to the tension is inclined to roll up the drawstring and thus shorten the distance between the boot heel and the ski. After a certain extension length of the tension member, this is provided with a thickening that in another Pulling out the tension member pulled through a passage barrier must be what only with the expenditure of a increased strength is possible. The length up to the thickening corresponds the length that the ski jumper chooses to lift the heel of the boot off the ski during the flight phase can. The thickening forms the stop for lifting of the heel of the boot in the attitude. At the telemark landing if the heel of the boot is raised jerkily, so that the thickening is pulled through the flow barrier and thus an extension of the tension member for the Telemark landing is made possible.

This well-known ski binding enables the Telemark landing, but has the disadvantage that the thickening is not independent through the flow lock back to the starting position can be traced back. This has the disadvantage that if the first pull-out is accidentally exceeded Length, i.e. when the flow barrier is overcome the tension member immediately when lifting off the entrenchment table no longer get into that position automatically can, in which the thickening on the tension member the end of Lifting off the boot heel determined during the flight phase. The The consequence of this is that the angle between the sole of the boot and Ski and therefore also the angle between the ski jumper and the ski no longer adhered to in the desired manner can be so that the skis are turned up what to a crash of the ski jumper or ski flyer.

The object of the invention is a ski binding of the beginning explained type so that the boot heel up to a certain predetermined amount without counterforce or can be raised against a very low counterforce and after reaching this height, this is only exceeded overcome a predeterminable tensile force acting on the boot the arrangement should be such that when this force decreases, the originally set one Predeterminable amount of lifting of the boot heel again can be brought about.

This task is based on a ski binding at the beginning specified type solved according to the invention in that the additional device from exceeding the predeterminable Height of the lifted boot heel a spring force exerts on the tension member, which is opposite to the tensile force.

So when the force on the boot heel after exceeding the predeterminable height of the lifted boot heel to the extent that it is less than that in the invention Way acting on the tension member spring force, so the tension member again shortened to a length that the predeterminable Height of the lifted boot heel corresponds.

The decisive advantage of the invention Design is achievable, is that in one briefly exceeding the angle of attack of the sole of the boot compared to the ski the originally set distance of the Boot heel to the ski is automatically adjusted again, so that the ski jumper when he presented the stop again finds an increase in the angle between Boot sole and ski and thus a change in the location of the Ski jumpers against the ski and vice versa prevented. This means that the skis are stable and secure again Jump or flight of the ski jumper guaranteed.

To fine-tune the predetermined height and thus the length of the tension member is easy to achieve in a development of the invention, the additional device in the pulling direction the tension member adjustable against the ski.

A preferred embodiment of the invention consists in that the additional device has a gas pressure spring with it Compression of essentially constant spring force includes and that the end of the boot heel facing away Tension member attacks on a part of the gas pressure spring, the other part is skifest. So with this configuration the tension member when the traction on the boot heel increases beyond a predeterminable value, on the gas pressure spring one, the entering extension of the tension member opposes an essentially constant resistance. This option to extend against the resistance the gas pressure spring is desirable for the telemark landing. If the mentioned pulling force at the jump on Boot heel temporarily exceeded, so the ski is under Shortened the tension member again and so long until the extension length of the tension member is reached was previously predetermined by the ski jumper to one Maintain the selected angle between the ski and the angled sole to be able to. By the tension member, which the swivel angle of the boot towards the ski to a certain value limited, the stability of the flight is increased and that dangerous uplift of the skis when gusts of wind occur avoided.

The additional device can also comprise a helical spring, which is held ski-proof at one end and at the other End the tension member attacks. This will not the restoring force is kept constant as with the gas pressure spring, but this restoring force increases with increasing load the spring.

To not only in the outer appearance of the ski binding advantageous to design, but also in the starting position tension member loosely attacking the boot heel in a concealed To be able to accommodate form is in a further embodiment provided that the additional device in a ski-fixed Housing is arranged and that guide rollers for the tension member are provided which act on the tension member bring on the additional device. Because of the housing Additional device elegantly dressed and also takes the housing has the necessary guide rollers to ensure that Bring tension member in connection with the additional device. It is advantageous here if one of the guide rollers can be moved arranged and by a weak return spring for pulling the overhanging tension member into the housing is burdened.

To allow for the additional length of the tension member with the Telemark landing with relatively small changes in length with the gas pressure spring or the coil spring is possible is provided in a further embodiment of the invention, that one end of the tension member inside the housing attached and over several guide rollers according to Art a pulley is guided, one of the guide rollers is arranged on a pressure piece of the additional device.

An arrangement of a sliding roller with a return spring can be avoided in a further embodiment of the invention the tension member can be designed as an inextensible hose, inside one connected to both hose ends Elastic band is arranged, which is tensioned when the tension member is stretched is and in the contracted state to a certain Shrinking the hose leads. The trained as a hose Tension member is so when unused or in the downhill position of the ski jumper contracted, the inextensible tube wrinkles while when the tension member is pulled out up to the predetermined height the elastic in the hose stretched and the Tube is stretched so far that it inextensible the heel of the boot holds at the predetermined level. If the Hose connected to an additional device he can just like an otherwise usual inextensible tension member act on this additional device, whereby the additional Extension for the Telemark landing occurs.

It is advantageous if the tension member is inextensible in the direction of tension and essentially until the predetermined height is reached is unencumbered, because in this way Ski jumper after setting the predeterminable length of the Tension member ensures a firm stop when the paragraph lifted according to the preset length of the tension member is. Felt due to the inextensibility of the tension member the ski jumper has a fixed end position at a predetermined Angle between the sole of the shoe and the ski so that it according to the given buoyancy in its flight posture can adjust. It essentially reaches this end position without counterforce, so no influence on the angle between boot sole and ski occurs, resulting in one of the ski binding leads to unaffected flight phase.

An advantageous development of the invention consists in that the tension member is both arbitrarily detachable and at Occurrence of a value exceeding a predetermined value on Boot heel attacking traction the connection between Boot heel and ski releases. The force required for the release this connection is necessary can be set as high that they are not exceeded during the ski flight will, but in the event of a fall, there is a possibility that the ski jumper is completely free from the binding and free of the ski. However, the prerequisite for this is that the front sole holding device trips in the event of an overload.

An advantageous embodiment for releasing the tension member from Boot heel consists of that associated with the boot heel End of the tension member a clip made of elastic Material, for example plastic, is provided one arranged on the boot, cylindrical, perpendicular to Boot sole surface standing cones and between two The flanges of the same can be snapped onto the pin axis in a positive-locking manner is. With the usual tensile load when swiveling of the boot against the ski during the flight phase and also occurs when landing, the bracket clamped between the flanges of the spigot and can therefore not from this loosening. Conversely, occurs after a trigger and release of the boot from the ski a tensile load essentially in the direction parallel to the sole of the boot the pin on the boot can be removed from the clip get free, as these are only lighter on these tenons Clamping action can be plugged on. This ensures that after the boot is released from the front Sole holding device the tension member not as a lanyard works, but that the ski jumper is completely free of the ski.

In order to be able to remove the clip from the heel of the boot, when strong, excessive forces attack in one direction, which are not essentially parallel to the sole of the boot can run in a further embodiment of the invention Clamp in a plane perpendicular to the longitudinal axis of the pin have a gap that extends from that to the pin clip-on end up to that provided for the pin Extent extends and that one end of the The tension member skifest while the other end on the bracket is firmly arranged. Occur with this configuration strong Tipping forces on the bracket, so the bracket can deform due to the gap, making them no longer form-fitting held between the two flanges of the journal is and can therefore also be released from it if the direction of pull is not perpendicular to the pin axis.

Figur 1:

eine perspektivische Darstellung einer Fersenhaltevorrichtung für eine Sprungbindung;

Figur 2 bis 4:

jeweils eine Seitenansicht einer Sprungbindung mit Skistiefel in schematischer Weise in der Stand- oder Abfahrtsstellung, der Flugphase und der Telemark-Landung;

Figur 5 bis 7:

schematische Schnittdarstellungen der Fersenhaltevorrichtung mit unterschiedlich weit ausgezogenem Zugglied entsprechend der Flugphase, der Abfahrts- und Standstellung und der Telemark-Landung;

Figur 8:

einen Schnitt durch eine abgeänderte Ausführungsform der Fersenhaltevorrichtung;

Figuren 9 und 10:

vergrößerte Schnittdarstellungen des Endes des Zuggliedes gemäß Figur 8 in unterschiedlichen Belastungszuständen; und

Figur 11:

einen Schnitt durch eine weitere Ausführungsform einer Fersenhaltevorrichtungsform für Sprungbindungen.

The invention is explained in more detail below with reference to several exemplary embodiments shown in the drawing. The drawing shows:

Figure 1:

a perspective view of a heel holding device for a jump binding;

Figure 2 to 4:

each a side view of a jump binding with ski boots in a schematic manner in the standing or departure position, the flight phase and the Telemark landing;

Figure 5 to 7:

schematic sectional views of the heel holding device with differently extended tension member according to the flight phase, the departure and standing position and the Telemark landing;

Figure 8:

a section through a modified embodiment of the heel holding device;

Figures 9 and 10:

enlarged sectional views of the end of the tension member according to Figure 8 in different loading conditions; and

Figure 11:

a section through a further embodiment of a heel holding device shape for jump bindings.

FIG. 1 shows a heel holding device for ski bindings, in the case serving as a heel pad 1 an additional device shown in more detail in the further figures is provided, which is connected to a tension member 2 stands, which is provided with a bracket 3, the corresponding to Figures 2 to 4 on a not shown Bolt located in the heel area of the boot can be clipped on. The detailed design of the The clip and the pin on the ski boot can be found in EP 0 548 806 A2. From part 4 of the Housing 1 protrudes a threaded rod 5, which by means of a Knurled nut 6 is adjustable, which on the one hand on the housing part 4 and on the other hand on a support bracket 7, which is fixed with the housing part 4 is connected, is supported. The threaded rod 5 is, as for example from Figures 5 to 8 and 11 can be seen, connected to an additional device 8 or 9, which in Figures 5 to 8 as gas pressure spring 8.1 and in Figure 11 is designed as a coil spring 9.1. The additional device 8 or 9 is by means of knurled nut 6 and threaded rod 5 adjustable in the longitudinal direction of the ski.

As can be seen from Figures 2 to 4, a ski boot 10 is in the Toe area by a front not shown Sole holder 11 held and the heel area is connected to the tension member 2 via the clamp 3, which according to FIGS. 5 to 7 via a roller 12 is guided into the interior of the housing 1, wherein a passage slot 13 the insertion of the tension member 2 into the housing 1 enables. That facing away from the boot heel or the clip 3 The end of the tension member 2 is over another in the longitudinal direction of the ski Roller 14 slidably guided in the housing 1 guided and with the end 15 of a piston rod 16 of the gas pressure spring 8.1 connected. In the shown in Figure 2 Stand or departure position is the drawstring 2 by a relatively weak return spring 17 almost completely drawn into the housing 1, the return spring on the one hand attached to a housing-fixed point 18 and on the other on the sliding in the longitudinal direction in the housing Roll 14 is connected. This departure position is also in figure 6 shown. The ski jumper is now lifting in the flight phase 3 the boot heel from the ski, so the drawstring 2 according to Figures 3 and 5 from pulled out of the housing 1 until the roller 14 on the end piece 15 of the piston rod 16 of the gas pressure spring 8.1 is applied and thus the tension member now act on this gas pressure spring can. Since the gas pressure spring but a predeterminable Exercises resistance is in the state shown in Figure 5 a certain stop for pulling out the tension member 2 reached, only after the resistance has been overcome the gas pressure spring exceeded and the tension member accordingly Figure 4 or Figure 7 further pulled out of the housing 1 can be. This more drawn out location of the Tension member 2 is necessary to make the so-called telemark landing in which the skier knees one Leg in the immediate vicinity of the ski surface.

When moving the boot from the standing or downhill position according to Figure 2 in the position of Figure 3, the Flight phase implies is only the resistance of the very weak Return spring 17 to overcome what is essentially is almost negligible. Only when the roller 14 on the end piece 15 of the gas pressure spring 8.1, there is a considerable one Resistance, the lifting angle or the lifting height of the heel of the boot compared to the ski. In this position must be increased, depending on the interpretation of the Gas struts to be overcome to move to the telemark position to arrive according to Figure 4. The extension of the Tension member 2 is thereby by compression of the additional device 8 enables, i.e. the piston rod 16 is in the Gas pressure spring 8.1 pushed in. This process is from the Comparison of Figures 5 and 7 can be seen. In Figure 7, the Piston rod 16 almost completely in the gas pressure spring 8.1 pressed in, which, starting from Figure 5, with the Pressure piece 15 connected end of the tension member 2 closer the slot 13 is approaching. This can make it longer of the tension member 2 emerge from the housing 1. This resistance is necessary to enable a safe flight phase and avoid flipping up your skis. At a the ski would have to resist this resistance the additional device 8 in the form of the gas pressure spring 8.1 overcome become. Even if this resistance is brief is overcome, the stable flight position is again through brought about this additional device or gas pressure spring 8.1, tries to push back into the position shown in Figure 5. The return spring 17 is for the basic function of the Feather dispensable. It only serves to retract the tension member 2 in the housing 1, so as to create a visually tidy impression to enable. The tension member is always in this way in a slightly tensioned condition and does not hang loosely on the Paragraph.

Figures 8 to 10 show a modification of the design according to FIGS. 5 to 7. The modification consists in that the return spring 17 by a differently designed tension member 20 was made redundant. The other tension member 20 consists, as can be seen from FIGS. 9 and 10, of a inextensible hose 19 and one inside the hose 19 arranged elastic band 21. The elastic band 21 and the hose 19 are at their ends by one Clip 22 firmly connected. I'm fully undressed State, which is shown in Figure 10, is the elastic 21 very much stretched and the inextensible hose 19 stretched. In the fully contracted position of the Elastic band 21, the hose 19 is shrunk like this Figure 8 and to a certain extent also from Figure 9. The elastic band 21 thus replaces the return spring 17. A Another modification is that the tension member 20 over a roller formed on the end piece 15 of the piston rod 16 23 is performed. The end of the heel facing away from the heel Tension member 20 is at a fixed point 24 within the housing 1 attached. If the tension member from the in FIG shown position attracted, then a via the roller 23 Compressive force on the piston rod 16 and thus on the gas pressure spring 8.1 exercised.

Figure 8 shows the downhill position. In the flight phase is the outer tube 19 completely stretched. The additional length of the Tension member 20 in the Telemark landing is due to the compression the auxiliary device 8, i. by inserting the Piston rod 16 provided in the gas pressure of 8.1. At this tension member is the clamp 3 by means of a grub screw 24, as is the case with the embodiments according to the other figures.

Figure 11 shows an embodiment in which not only one modified guidance of the tension member 2 within the housing 1 is realized, but the additional device 9 is as Coil spring 9.1 executed. In this embodiment is the tension member 2 in turn via the roller 12 in the housing 1 passed and over the roller 14, as in the embodiment according to Figures 5 to 7 out. Also in this embodiment the return spring 17 is provided. The change is now that the tension member after the roll 14 too a housing-fixed roller 25 is guided, from there on a Roller 26 is pulled, finally the end of the tension member is arranged at a point 27 fixed to the housing. The role 26 is rotatably mounted on a pressure piece 28, which on the Helical compression spring 9.1 acts. In this illustration is the guide slot 29 for the movable roller 14 is also good recognizable. This additional guidance of the tension member A kind of block and tackle is created over several rollers allows the tension member to extend significantly further out of the housing must be pulled out as this is the compression path corresponds to the spring 9.1. In Figure 11 is also just as in Figures 5 to 8, clearly recognizable that by actuating the knurled nut 6 the contact point fixed to the housing the helical compression spring 9.1 or the gas pressure spring 8.1 can be moved, causing the extension length of the tension member 2 or 20 until the additional device becomes effective 8 or 9 can be changed, i.e. the extension length the tension member for the flight phase can be varied.

Claims (12)

Ski binding, in particular for ski jumping, with a front sole holding device and a heel holding device which can be lifted off the ski, which comprises a pulling element which can be moved from all sides, connects the boot heel to the ski and allows the boot heel to be lifted up to a predetermined height, the pulling member being at this height Above a predeterminable value of a tensile force acting on the boot heel can be extended to a greater length against the resistance of an additional device, characterized in that the additional device (8, 9) has a spring force on the tensile member (2, 20) when the predeterminable height of the lifted boot heel is exceeded ) exercises that is opposite to the pulling force. Ski binding according to claim 1, characterized in that the additional device (8, 9) is adjustable relative to the ski in the pulling direction of the tension member (2, 20). Ski binding according to Claim 1 or 2, characterized in that the additional device (8) comprises a gas pressure spring (8.1) with a spring force which remains essentially constant when compressed, and in that the end of the tension member (2, 20) facing away from the heel of the boot is attached to one part ( 15, 16) of the gas pressure spring (8.1), the other part of which is ski-proof. Ski binding according to claim 1 or 2, characterized in that the additional device (9) comprises a helical spring (9.1) which is held ski-proof at one end and at the other end (28) engages the tension member (2). Ski binding according to one of claims 1 to 4, characterized in that the additional device (8, 9) is arranged in a ski-fixed housing and that guide rollers (12, 14, 23, 25, 26) are provided for the tension member (2, 20) , which bring the tension member to act on the additional device (8, 9). Ski binding according to one of claims 1 to 5, characterized in that one of the guide rollers (14) is arranged displaceably and is loaded by a weak return spring (17) for pulling the overhanging tension member (2) into the housing (1). Ski binding according to one of claims 1 to 6, characterized in that one end of the tension member is fastened within the housing (27) and is guided over a plurality of guide rollers (12, 14, 25, 26) in the manner of a pulley system, one of the guide rollers ( 26) is arranged on a pressure piece (28) of the additional device (9). Ski binding according to one of claims 1 to 7, characterized in that the tension member (20) is designed as an inextensible hose (19), in the interior of which a rubber band (21) connected to both hose ends is arranged, which is stretched when the tension member (20) is stretched is and in the contracted state leads to a certain shrinkage of the hose (19). Ski binding according to one of claims 1 to 8, characterized in that the tension member is inextensible in the direction of pull and is substantially unloaded until the predetermined height is reached. Ski binding according to one of claims 1 to 9, characterized in that the tension member (2, 20) is both arbitrarily releasable and, when a tensile force acting on the boot heel exceeds a predetermined value, releases the connection between the boot heel and the ski. Ski binding according to one of claims 1 to 10, characterized in that a clip (3) made of elastic material, for example plastic, is provided at the end of the tension member (2, 20) associated with the boot heel, which is attached to a cylindrical, The pin standing perpendicular to the surface of the boot sole can be positively latched between two flanges thereof transversely to the pin axis. Ski binding according to claim 11, characterized in that the clip (3) in a plane perpendicular to the longitudinal axis of the pin has a gap which extends from the plug-on end to the recess provided for the pin, and that one End of the tension member ski, while the other end is fixed to the bracket (3).

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