EP0784943A1 - Skishoe - Google Patents

Abstract

The outer shell of the ski boot comprises a foot part (2) and a leg part (3), connected by a joint (4). The leg part can be pivoted from a loose position to a locked skiing position, in which it can be fixed. An actuator (28) is provided for release from the locked position. A first clamp (30) holds the inner shoe (10) in the outer shell and the inner shoe is held against the sole of the outer shell in the skiing position by a second clamp (22). The inner shoe can be inserted into the outer shell through a rear flap (44) arranged pivotably on the foot part. The first clamp is formed by central rotating clamp and the second clamping system presses the first clamp on the instep of the inner shoe.

Description

The invention relates to a ski boot with a two-part outer shell consisting of a foot part and a shaft part, the foot part being connected to the shaft part via a joint, and an inner shoe.

Known ski boots of this type are widely used in modern skiing for both recreational and professional skiers. For a better skiing posture, the upper of such ski boots is constructed in such a way that it is positioned at a certain angle α to the vertical. This makes it easier for the skier to assume the desired crouched position while driving, which enables him to perform the turns particularly precisely. However, this has the consequence that in the time before or between the skiers the skiers can only wait with their skis in a very unnatural, cramped position when queuing up for the uphill transport with the ski lift. This results in poor blood circulation and muscle cramps, which may affect the ability of the skier to ski and is therefore a cause of skiing accidents. Another reason for poor blood circulation in the foot muscles is that the foot is tightened in the ski boot, which is important for optimal skiing, so that when the turns are applied there is a direct transfer of force to the ground. In the waiting pauses between the runs, the non-moving feet suffer particularly from the tension and the cold acting from the outside, so that warm-up movements have to be carried out before leaving if you want to remedy the risk of a skiing accident from the outset. On the other hand, it is very cumbersome to loosen conventional ski shoes, e.g. by opening the buckles that the pressure on the feet eases. Finally, known ski boots of this type have the disadvantage that they can be used for walking or e.g. are completely unsuitable for driving and are therefore best removed for this purpose, which is extremely time consuming.

The object of the invention is to avoid these disadvantages and to create a ski boot of the type mentioned, which not only allows an ideal position of the legs for skiing, but also for normal waiting or standing in ski boots. Another object of the invention is to enable the ski boot to be tightened and loosened quickly, so that the feet can be well supplied with blood during waiting breaks. Finally, it is still a task to create a ski boot that can be used not only for skiing but also for walking or driving, while giving the foot the necessary freedom of movement.

According to the invention, this is achieved in that the shaft part of the ski boot can be pivoted from a loose position into a latching downhill position and can be locked therein, an actuating device being provided for the solution of the locking that a first tensioning system is provided in the outer shell for holding the inner boot, which is free in the loose position, and that to hold down the inner shoe against the A second clamping system is provided on the sole of the outer shell when the downhill position is engaged.

On the one hand, a desired, e.g. slightly crouched downhill position during ski descent and on the other hand a relaxed, e.g. upright posture while waiting in the breaks. In this case, the pressure is also removed from the feet, which are otherwise clamped during the journey, so that there are no circulatory disorders.

In a further development of the invention it can be provided that the inner shoe can be inserted into the outer shell by means of a tailgate pivotably arranged on the foot part.

As a result, the skier can only move or rest with the liner alone during breaks.

Furthermore, it can be provided that the first clamping system is formed by a central rotary clamping system.

This significantly simplifies the tightening of the ski boot, since only one e.g. Central button must be pressed, which is very essential for comfortable operation of the ski shoe at low temperatures.

Furthermore, it can be provided that the second tensioning system holds the inner shoe in the downward position by pressing the first tensioning system against the instep part of the inner shoe against the sole of the outer shell.

As a result, the pressure exerted on the foot is distributed evenly, depending on the instep shape of the skier.

In a further embodiment of the invention it can be provided that the shaft part is provided with an extension projecting into the foot part, which in the foot part rests or engages in the loosening or downward position on stop or locking devices provided for this purpose.

In this way, the two positions can be easily realized.

Another feature of the invention can be that the extension of the shaft part is formed by a substantially U-shaped bracket which runs between the outer shell and the inner shoe and is connected at its ends to the shaft part, that the joint through two the shell wall of the foot part and a pivoting axis penetrating one side part of the bracket is formed such that the loose position or the downhill position can be selected by the stop or latching position of the crossbar of the U-shaped bracket in the interior of the foot part, and that the crossbar clamps the second tensioning system in the downhill position, so that the first tensioning system is pressed against the instep of the liner.

As a result, the mechanics remain hidden and, despite high demands on strength, can also be accommodated in a lightweight design in the ski boot, so that there are no weight disadvantages.

According to another variant of the invention, it can be provided that the crossbar is held in the relaxed position by a spring, preferably a helical spring, on a stop device designed as a stop and can be locked in the downward position via a latching flap, and that the actuating device is actuated by a the latching flap is formed, which is formed through the shell wall and with which the crosspiece can be released from the downward position.

This results in a particularly simple and secure latching into the departure position and an equally easy to release this departure position.

According to another embodiment of the invention, it can be provided that the latching flap is held in its latched position by a spring, preferably a helical spring.

This means that mechanics that take up little space can be created that also have a long life expectancy.

Furthermore, it can be provided that the second tensioning system is tensioned from two traction cables which are guided laterally through the first tensioning system from the front part of the foot part to the rear part.

With this feature, the movement for assuming the downward position can also be used for tensioning the tensioning system, the traction ropes preferably being formed by wire ropes.

In this context, it can be provided that the central rotary tensioning system is essentially formed from two instep covers that can be displaced parallel to one another transversely to the longitudinal direction, with eyelets arranged in the longitudinal direction on each instep cover, and a lockable tensioning disk arranged centrally over the instep covers, a pulling rope in the type of shoe straps is guided through the eyelets and is fixed at its ends to opposite circumferential areas of the tensioning disk, and that the traction cables of the second tensioning system are passed through openings on the two outer longitudinal sides of the instep covers.

The central arrangement of the clamping disc results in a very uniform and relatively little effort that requires the contraction of the clamping jaws of the clamping system, so that its operation is comfortable and easy to carry out.

A further feature of the invention can consist in that a turntable with a foldable rotating wing is arranged on the axis of rotation of the tensioning disk passing through the shell wall.

Due to the retractable wing, the clamping system only slightly disturbs the outer visual impression of the ski boot, but provides a very good transfer of force from the hand to the pull rope for pulling the clamping jaws together.

Furthermore, it can be provided that the axis of rotation is formed from a cylindrical central part and each has a polygonal, preferably hexagonal cross-sectional area at its ends, which is rounded at the ends in a hemispherical manner, and that in the center of the turntable and in the center of the tensioning disk, one each polygonal, preferably hexagonal, bearing bush is arranged in cross section of the axis of rotation, so that the ends of the axis of rotation engage with play in the bearing bushes and the power transmission from the turntable to the tensioning disk is possible in different relative positions of the axis of rotation.

As a result, the instep covers can be adapted to very different instep shapes in a uniform manner. In this way, the position of the first tensioning system can be adapted to different instep heights and instep slopes.

According to another variant, it can be provided that the turntable is divided on its underside by locking segments, in which a spring-mounted, radially to the disc locking pin engages one after the other by tensioning the traction cable by turning the rotating wing, which by means of a release device on the outside the ski boot is accessible, can be released from the locked position.

In this way, the turntable and with it the tensioning disk can be locked, so that the tension of the pull rope, once set, is not lost again. If necessary, the pressure of the clamping jaws can be released by pressing the actuating device.

Another feature can be that the release device is formed by a crescent-like release button molded onto the locking pin and partially surrounding the turntable.

This results in an arrangement of the cut-out device that is recessed in the shell wall and is easy to use.

According to another embodiment of the invention, it can be provided that a nose is formed on the inner shoe in the area of the heel, with which the inner shoe engages in a corresponding recess in the tailgate.

As a result, the inner boot cannot slip out of the outer shell even when under heavy loads during skiing, since it is anchored accordingly in the ski boot.

In a further embodiment of the invention, the inner shoe can be formed in the form of a panties and a profile can be formed on the underside of the inner shoe.

This means that the liner can also be used on slippery or wet surfaces and can also be put on quickly.

Finally, a particularly preferred embodiment of the invention is that the angle α between the loose position and the downward position is 17 °.

In this way, the skier's legs can naturally support the body in the relaxed position and assume a slightly crouched position during skiing.

Another feature of the invention can be that the shaft part and the tailgate can be connected by connecting rods, preferably the connecting rods in the region of the tailgate can be connected by a plug-in closure.

As a result, the tailgate is pressed against the rear part of the inner shoe, so that the lower leg of the skier is gripped accordingly.

Finally, a preferred embodiment of the invention is that by closing a pivotable cover arranged on the tailgate, tensioning elements tension the connecting rods by lever action.

This feature allows the lower leg to be gripped very well by the shaft part and the tailgate.

In a further embodiment of the invention, the tailgate can be arranged pivotably about the joint.

As a result, the pivotability of the shaft part and that of the tailgate can be realized by only one joint, which means that less effort is required to manufacture the ski boot.

In a further embodiment of the invention, a shoehorn element can be arranged with one end movably on the tailgate and with its other end pivotably on the foot part of the ski shoe.

This makes it easier to get into the ski boot with the liner, since the shoehorn element forms a sliding aid into the interior of the ski boot when the tailgate is open, which above all simplifies the insertion of the heel area of the liner into the ski boot.

In this context, it can be provided that the shoehorn element has an elongated hole in which a mushroom-shaped pin arranged on the tailgate is guided, the two stop positions of the pin at the two ends of the elongated hole corresponding to the open and the closed position of the tailgate.

This guide allows the shoehorn element to follow the movement of the tailgate from the closed to the open state and vice versa, and when the tailgate is open it is arranged so that it serves as an entry aid.

According to another variant of the invention, the shoehorn element can have a saddle-shaped surface that tapers into two symmetrical legs that delimit a recess that is open at the edge, into which recess the heel part, in particular the nose, of the inner shoe is held when the tailgate is closed.

Above all, the heel area of the inner shoe can slide very well over the saddle-shaped surface when the tailgate is open, so that an effective entry aid is created, while when the tailgate is closed, the inner shoe is held in its position by the edges of the recess which is open at the edge. The shoehorn element is connected to the foot part via the symmetrical legs, which can therefore perform the holding function independently of the movements of the shaft part and the tailgate connected to it. Thus, the inner shoe is not loosened even when the shaft part is moved forward in its holder caused by the shoehorn element.

In this context it can be provided that an opening is provided at each end of a leg through which pivot axes arranged laterally in the foot part extend.

A very advantageous mounting of the shoehorn element in the foot part can thus be achieved.

Another variant of the invention can consist in that the tailgate can be transferred from an open position to a closed position and vice versa via a lever-operated rear cable system.

This allows the inner shoe to be inserted into the ski boot in the open position of the tailgate and then to be moved to the closed position by actuating the rear cable system, the upper part of the inner boot being encompassed by the tailgate and the shaft part and not by can be pulled out of the shoe alone. This can only be done by operating the rear rope system. This prevents the ski boot from opening automatically.

In a further development of the invention it can be provided that the rear cable pull system is formed from a rear cable fastened with its ends to the shaft part and arranged on the tailgate cable deflection guides, which cable deflection guides can be changed in their mutual distance by a pivot lever.

By such a guided rear rope, which is preferably formed from a wire rope, the rope deflection guides and the pivot lever result on the one hand in an advantageous distribution of forces with which the forces required for closing the tailgate can be easily achieved and on the other hand the necessary change in the rope path is between the open and the closed position of the tailgate are converted into a smaller displacement path by the deflecting guides, so that the pivot lever has to pass through a correspondingly smaller angle.

According to another variant of the invention, it can be provided that the pivoting lever is articulated in the middle to the ends of two extension arms, which are articulated at their other end to one end of a beam guided in rails and carrying two cable deflection guides, the parallel spacing of which a further beam carrying a cable deflection guide can be changed between a minimum and a maximum distance by pivoting the pivoting lever, the open position of the tailgate corresponding to the minimum distance and the closed position to the maximum distance of the beams.

The cantilever arms convert the pivoting movement of the pivoting lever into a sliding movement of the bar guided in the rails, whereby very high clamping forces can be applied due to the lever effect of the pivoting arm when the tailgate is closed, so that the inner shoe can be firmly clamped with the lower leg of the skier . In the closed position of the tailgate, the friction of the rear cable system is so great due to the position of the pivoting lever that it does not have to be specially secured against opening.

Furthermore, an adjusting screw can be provided with which the distance between the bars can be preset.

In this way, different clamping pressures between the tailgate and the shaft part of the ski boot according to the invention can be selected and the clamping can be adjusted to different lower leg thicknesses.

In a further development of the invention it can be provided that a turntable is arranged on the axis of rotation of the tensioning disk which is passed through the shell wall of the foot part and which is provided along its circumference with wedge-shaped teeth into which a spring-loaded drive lever and a spring-loaded locking lever engage, both of which engage on one Ratchet levers that are pretensioned by a spring and can be moved back and forth between two angular positions and that drive the turntable only in one direction of rotation when the ratchet lever is moved back and forth and lock in the opposite direction of rotation, the ratchet lever being movable into a freewheeling position in which the turntable is located is freely rotatable.

In this way, by simply moving the ratchet lever back and forth, the tension of the pull rope that can be tightened via the tensioning disk can be increased without great effort in order to press the instep cover laterally against the instep.

Furthermore, it can be provided that the second tensioning system is connected by a pull-tight connection at its ends to the crossbar of the U-shaped bracket and between its ends Eyes of the first tensioning system as well as a tensioning rope guided in the area of the ski boot tip in the bottom of the foot part is formed.

Through this guidance of the tensioning cable and through its direct attachment to the crossbar, the movement of the U-shaped bracket is always transmitted directly to the second or first tensioning system. This is particularly advantageous because, depending on the deflection of the U-shaped bracket, a correspondingly high pressure can be exerted on the skier's instep.

In a further embodiment of the invention it can be provided that a function lever, preferably on the bottom of the foot part, is pivotally mounted against a spring, and that the crossbar of the U-shaped bracket rests on a support surface of the function lever in the loose position and in the down position in a adjoining the support surface of the function lever fillet, the function lever being pressed down against the force of the spring when the bracket is pivoted from the loose position into the downward position, and the spring is partially relaxed again when it engages in the fillet.

This function lever makes it possible to define a loose and a downward position for the U-shaped bracket and to change the tension of the second clamping system directly via the pivoting movement of the bracket.

According to another variant of the invention, it can be provided that the bracket which is locked in the downhill position by actuating an actuating slide which, through the outer shell of the ski boot and preferably arranged in the heel area, by means of which the function lever can be pressed down against the force of the spring, from the latched position in the fillet is detachable.

In this way, the downhill position into which the ski boot can be brought by moving the shaft part forward can be released again, so that the skier can move into the upright, relaxed position. The ease of use of the actuating slide means that clearing the downhill position does not pose any problems for the skier.

Finally, a further embodiment of the invention may consist in the fact that the U-shaped bracket is held in the downward position by a spring pressing its crossbar into the groove, that a deflecting surface of the function lever is provided which adjoins the groove and on which the crossbar is overcome by overcoming the Force of the spring can be deflected beyond the departure position within a predetermined angular range, the first tensioning system being pressed even more strongly against the inner shoe according to the additional deflection of the bracket.

As a result, the ski boot with its shaft can first be locked in the downhill position at a certain angle, so that skiing can take place in a slightly crouched position. When starting a turn, the skier now bends even more according to the usual driving technique and pushes the shaft part forward. This is over the U-shaped bracket on the deflection surface so that it yields to this movement by overcoming a spring pressure and, due to the direct connection of the tensioning cable and crossbar, sets the tensioning cable under even greater tension and thus the first tensioning system even more against the instep of the skier presses. This increase in pressure has a positive effect on the driving behavior, since an increased hold of the foot in the ski boot is desirable especially when starting and executing a swing.

• Fig.1 eine Seitenansicht eines erfindungsgemäßen Schischuhs ohne Innenschuh;
• Fig.2 eine Seitenansicht eines erfindungsgemäßen Innenschuhs;
• Fig.3 einen Längsschnitt durch einen Schischuh gemäß Fig.1 in Lockerstellung;
• Fig.4 einen Langsschnitt durch eine Schischuh gemäß Fig.1 in Abfahrtsstellung;
• Fig.5 den Schischuh gemäß Fig.1 mit weggeklappter Heckklappe;
• Fig.6 einen Schnitt durch den Fußteil des erfindungsgemäßen Schischuhs aus Fig.1;
• Fig.7 eine Draufsicht auf einen Teil eines erfindungsgemäßen ersten Spannsystems;
• Fig.8 eine Seitenansicht auf das Spannsystem gemäß Fig.7;
• Fig.9 eine Draufsicht auf einen anderen Teil eines erfindungsgemäßen ersten Spannsystems;
• Fig.9a einen Schnitt durch den in Fig.9 dargestellten Teil eines Spannsystems;
• Fig.10 eine Sicht von unten auf den Teil aus Fig.9;
• Fig.11 einen Schnitt durch das erfindungsgemäße Spannsystem aus Fig.1;
• Fig.12 eine erfindungsgemäße Ausführungsform eines ersten Spannsystems;
• Fig.13 ein Detail aus einem erfindungsgemäßen ersten Spannsystem;
• Fig.14 bis 18 einen Längsschnitt durch eine weitere Ausführungsform eines erfindungsgemäßen Schischuhs;
• Fig.19 und 20 ein Detail einer weiteren Ausführungsform eines ersten Spannsystems;
• Fig.21 einen Schrägriß eines Heckklappenseilzuges
• Fig.22 und 23 eine Ausführungsform eines erfindungsgemäßen Schischuhs mit offener und geschlossener Heckklappe und einem Heckklappenseilzug gemäß Fig.21;
• Fig.22 eine schematische Darstellung eines integrierten Schuhlöffelelements;
• Fig.23 ein erfindungsgemäßes intergriertes Schuhlöffelelement in Draufsicht und
• Fig.24 eine Seitenansicht von Fig. 23.

The invention is explained in more detail below using an exemplary embodiment and with the aid of the drawings. It shows:

• 1 shows a side view of a ski boot according to the invention without an inner boot;
• 2 shows a side view of an inner shoe according to the invention;
• 3 shows a longitudinal section through a ski boot according to Figure 1 in the loose position;
• 4 shows a longitudinal section through a ski boot according to FIG. 1 in the downhill position;
• 5 shows the ski boot according to FIG. 1 with the tailgate folded away;
• 6 shows a section through the foot part of the ski boot according to the invention from FIG. 1;
• 7 shows a plan view of part of a first clamping system according to the invention;
• 8 shows a side view of the clamping system according to FIG. 7;
• 9 shows a plan view of another part of a first clamping system according to the invention;
• 9a shows a section through the part of a clamping system shown in FIG. 9;
• 10 shows a view from below of the part from FIG. 9;
• 11 shows a section through the tensioning system according to the invention from FIG. 1;
• 12 shows an embodiment of a first clamping system according to the invention;
• 13 shows a detail from a first clamping system according to the invention;
• 14 to 18 a longitudinal section through a further embodiment of a ski boot according to the invention;
• 19 and 20 show a detail of a further embodiment of a first clamping system;
• Fig. 21 shows an oblique view of a tailgate cable
• 22 and 23 show an embodiment of a ski boot according to the invention with an open and closed tailgate and a tailgate cable according to FIG. 21;
• 22 shows a schematic illustration of an integrated shoehorn element;
• 23 an integrated shoehorn element according to the invention in plan view and
• Fig. 24 is a side view of Fig. 23.

1 shows a part of a ski boot 1 according to the invention, which is composed of a two-part outer shell 2, 3 and an inner boot 10 (FIG. 2), which inner boot is not shown in FIG. 1. Binding lugs 8, 9 are formed on the sole 51 of the ski shoe 1 in the front and rear area, which correspond to the usual national safety regulations, so that the ski shoe 1 can be combined with any common safety binding. The two-part outer shell comprises a foot part 2 and a shaft part 3, the foot part 2 being connected to the shaft part 3 via a joint 4. An inner shoe 10, which is shown in FIG. 2, can be inserted into this outer shell, which accommodates a mechanism to be described in more detail on the inside. According to a variant of the invention, the inner boot 10 is introduced into the ski boot 1 from the rear via an access opening 12 which can be closed with a tailgate 44 arranged on the base part 2. This serves to enable the skier to get on and off with the liner 10 put on easily, so that the skier can simply leave behind skis and shoes during skiing breaks and can walk or drive with the liner, for example. A lid 5 is also provided in the tailgate, which releases tensioning elements 43, which are embedded in the tailgate 44 and are not shown in FIG. 1, and which clamp the shaft part 3 together with the tailgate 44 via connecting rods 41. According to the invention, the shaft part 3 of the ski boot 1 can be pivoted from a loose position into a latching downhill position and can be locked in this. According to a variant of the invention, the angle α between the loose position and the downward position is 17 °. The loosening position is taken during all breaks between skiing and allows you to stand upright in the ski boot. This is particularly advantageous when waiting in the lift queue or during short breaks. The downhill position is a position in which the shaft of the ski boot is tilted slightly forward to give the skier the opportunity to make particularly good turns in the snow by slightly crouching his legs. To solve the determination in the downhill position, an actuating device 28 is provided which can be actuated by hand or with a ski stick.

To hold the inner shoe 10 in the outer shell, a first clamping system 30 is provided, which is free in the loose position. The first clamping system 30 can be designed differently. For example, a single or multi-buckle system or a central rotary tensioning system can be provided. In the exemplary embodiment according to FIG. 1, a central rotary clamping system 30 is realized, of which only one turntable 6 for actuating the same can be seen in FIG. 1.

In order to positively connect the skier's foot, the inner shoe 10 and the outer shell 2, 3 for the purpose of optimal power transmission to the snow slope, a second tensioning system 22 is provided for holding the inner shoe 10 down against the sole of the outer shell, which is tensioned in the downward position, so that So that the desired pressure can be exerted on the foot during the downhill run and the foot can be relieved during breaks by switching to the loose position. The second tensioning system 22 thus ensures a safe implementation of the foot movement on the skis, whereby this second tensioning system can be implemented in different ways. A possible embodiment is shown by tensionable wire ropes 22 in Figure 3. Part 1 of the inner boot can be seen in the ski boot 1 in the assembled state through the recess 11 in FIG.

FIG. 2 shows an embodiment of an inner shoe 10 according to the invention, which fits into the two-part outer shell from FIG. 1 and is designed both from an aesthetic and an orthopedic point of view. For all activities of the skier for which he does not need the skis immediately, e.g. driving or stopping in ski huts or the like. this moves only in this liner, which according to a variant of the invention is equipped on its underside with a profile 14, so that a good grip of the liner can be achieved even on slippery terrain and which is designed in the form of a panties. As a result, the inner shoe 10 can be put on very easily. According to another feature of the invention, a nose 13 is formed in the area of the heel of the inner shoe 10, with which the inner shoe 10 engages in a corresponding recess 47 (FIG. 3) in the ski shoe, so that the hold of the inner shoe is sufficient even under heavy driving stress and it cannot slide out of the outer shell 2, 3.

3 shows a longitudinal section through the two-part outer shell 2, 3 in the loose position. According to a variant of the invention, the shaft part 3 is provided with an extension 15 projecting into the foot part 2, which in the foot part 2 rests or engages with stop devices and latching devices 26 provided for this purpose. The stop devices, on which the extension 15 strikes in the loose position or in the downward position in addition to latching, can be provided, for example, by lugs formed in the lateral areas of the outer shell. The extension is formed by an essentially U-shaped bracket 15 which runs between the outer shell and the inner shoe 10 and is connected at its ends to the shaft part 3. As can be seen from FIG. 6, the joint is formed by two pivot axes 4 which penetrate the shell wall of the foot part 2 and one side part of the bracket 15 and each have an attachment at their ends in order to fix them in position. These pivot axes 4 make it possible to mount the shaft part 3 to pivot the ski boot 1 relative to the foot part 2. Two positions, the loose or the downhill position are excellent and can be selected by the stop or latching position of the cross piece 29 of the U-shaped bracket 15 in the interior of the foot part 2. Instead of the bracket 15 but other forms of extensions can be provided within the scope of the invention. Thus, an extension can also be integrally formed on the shaft part 3 and engage with its end in a wide variety of stop or latching devices which guarantee the downhill position and the loosening position of the ski boot.

The central rotary clamping system 30 with instep covers 21 can also be seen from FIG. 3, which can be actuated via a turntable 6 arranged outside the outer shell. The first tensioning system 30 is designed such that a wire rope 22 is guided through the lateral parts from eyelets 23 in the front part of the foot part 2 to one in the rear part of the foot part 2, which is pivotable about an axis and is connected to the pivot lever 24, so that the crossbar 29 does not touch the pivot lever 24 in the loose position and thus the first clamping system 30 is not tensioned on its side parts by the second clamping system 22 and is therefore free. If the shaft part 3 and thus the bracket 15 with its crossbar 29 are brought into the downward position by being rotated in the direction of the toe, the crossbar 29 presses down the pivoting levers 24 due to its rotary movement about the joint 4 and thus tensions the wire cables 22, which press the first clamping system 30 against the instep part of the inner shoe 10 (FIG. 4) and thus hold the inner shoe 10 down against the sole of the outer shell.

The transverse web 29 of the U-shaped bracket 15 is held in the loose position by a spring, which is designed as a coil spring 19 in FIG. 3, the coil spring 19 being placed on a dome 20 on one side. However, the spring 19 can be formed by any other spring acting in this way, such as a leaf spring or a tension spring.

Furthermore, it is arranged for the inner shoe 10 matching recess 47 on the tailgate 44.

In FIG. 4, the ski boot 1 is fixed in the departure position via a latching flap 26, the shaft part 3 of the ski boot 1 being inclined by an angle α, preferably by 17 °, relative to the vertical. According to a variant of the invention, the latching flap 26 is held in its latched position by a spring, preferably a helical spring 25. In order to assume the downhill position, the coil spring 19 must be compressed along its longitudinal axis when pivoting the shaft part 3 and with it the crossbar 29. This is done by pressing the crossbar 29 against the spring 19. As soon as a preselectable angle of gravity α, here preferably 17 °, has been overcome, a locking lever 26 which is under the pressure of the spring 25 can pivot upward and prevents the bracket 15 from pivoting back into the loose position. In the downhill position, the spring 19 also provides a desired damping effect, so that the shaft part 3 can swing somewhat around its set position in the event of impacts from the outside, for example due to bumps in the terrain. The feather 25 presses the latching flap 26 so that the crossbar 29 engages through it. On this latching flap 26, an actuating device 28 is formed by a bracket 27 formed on the latching flap 26 and passed through an opening 39 in the shell wall, with which the crossbar 29 can be released from the downward position. In order to free the bracket 15 from its latching position, the latching lever 26 can be pressed down over the extension arm 27 while overcoming the spring force of the spring 25, whereby the spring 19 under tension causes the crossbar 29 and with it the bracket 15 to be released again pivots.

When performing a swiveling movement from the loose position into the downward position, the wire rope 22 designed as a second tensioning system is tensioned by the transverse web 29 of the bracket 15 and the instep covers 21 are pulled down at their outer regions so that they rest on the instep of the foot. The instep cover 21 is adapted to the instep shape of the skier by means of the first central rotary tensioning system 30 (FIGS. 7 to 11) in the loose position.

The lid 5, which can be pivoted about a pivot axis 42, is integrated in the tailgate 44, which is mounted rotatably about a pivot axis 40 on the rear foot part 2. The cover 5 has a recess 46 into which a detent 45 formed on the tailgate 44 can snap. Under the cover 5 there are the tensioning elements 43, around which the connecting rods 41 run, which are connected to the shaft part 3 and can be connected in the space under the cover 5. If the connecting rods 41 e.g. connected by a plug lock and the lid 5 is closed, the tailgate 44 is connected to the shaft part 3 under a tension exerted by the tensioning elements 43. In order to be able to get into the ski boot with the inner boot, the connecting rods 41 are separated from their plug connection and the tailgate 44 can be pivoted backwards, as can be seen from FIG. 5.

5 shows the tailgate 44 in the pivoted-out state, so that in the rear part of the ski boot 1 there is the opening 12 through which the inner boot 10 can be used to get into the ski boot 1. The flap 5 is also drawn in the open state, the rotatably mounted clamping elements 43 being recognizable. By closing the cover 5, the connecting rods 41 are put under tension via the leverage of the tensioning elements 43, so that the tailgate 44 and the shaft part are drawn together around the inner shoe 10. However, any other common system can be used for this function of tightening the shaft part and tailgate around the inner shoe, and many of these systems work with a buckle pull, which offers a very large variability in scope.

The section AA from FIG. 4 is shown in FIG. 6, the pivot axes 4 and the transverse web 29 of the bracket 15 being recognizable. The boom 27 is guided through the shell wall of the foot part 2 through an opening 39 and ends in an actuating knob 28 ', which can be actuated by hand or conveniently with a ski stick. Will the Pressing the actuating knob 28 'downward, the latching flap 26 is also moved downward and releases the crosspiece 29, so that the bracket 15 can move back into its loose position when moved by the spring 19.

7 shows a part of the first, central rotary tensioning system 30, which comprises two instep covers 21 and a centrally located tensioning disk 36, which, by turning clockwise, a pulling rope 34 which is guided through eyelets 32 in the manner of a shoe strap, the instep covers 21, which are guided in the guide slots 37, pulls towards one another. The first tensioning system 30 adapts perfectly to the instep shape of the skier via the pulling ropes 34 and holds the inner shoe 10 in the outer shell. The first tensioning system 30 is held down against the sole of the outer shell 2, 3 in the downward position by means of the wire cables 22 guided through incisions 35. By this tensioning of the second tensioning system 22, the instep covers 21 are pressed onto the instep part of the inner shoe 10.

FIG. 8 shows a side view of the instep cover 21 with the rotation axis 38 of the tensioning disk 36 indicated by dash-dotted lines. As can be seen from FIG. 11, this rotation axis 38 is passed through the shell wall of the foot part 2 and on it outside the shell and adjoining it Turntable 6 is arranged with a folding wing 61.

9 shows a view of the turntable 6 with the rotary wing 61 from above. In section CC in Fig. 9a, the axis is also shown about which the rotary wing 61 can be folded to move it from the upright position, by means of which the turntable 6 can be easily rotated, in order to actuate the clamping system in a flat manner bring sunken position. Furthermore, it can be seen in FIGS. 9a, 10 and 11 that the underside of the turntable 6, according to a variant of the invention, is divided by locking segments 67 into which a locking pin 64, which is resiliently mounted via a spring 66 and runs radially to the turntable engages one after the other by tensioning the traction cable 34 by rotating the turntable 6. On this locking pin 64, a crescent-like release button 62, which is guided to the outside and partially surrounds the turntable, is formed, which releases the locked locking pin 64 from its locking position, so that the turntable 6 is released by the pulling of the pulling cable 34. This releases the tension on the foot. The ends of the pull rope are fixed in 60 so that they do not stand in the way of the rotary movement of the tensioning disk 36.

12 shows a variant of the axis of rotation 38 according to the invention, which connects the turntable 6 to the tensioning disk 36. At its ends, the axis of rotation 38 each has a polygonal, preferably hexagonal, cross-sectional area 72, 73, which is rounded in a hemispherical manner at its ends. In each case in the center of the turntable 6 and in the center of the tensioning disk 36, a bearing bush 74, 75 which is polygonal, preferably hexagonal, in cross-section, according to the shape of the end region of the turning axis 38, is arranged. The ends of the axis of rotation 38 engage in these bearing bushes 74, 75 with play. As a result, when the turntable 6 is rotated, the tensioning disk 36 can be rotated via the axis of rotation 38, wherein the power transmission from the turntable 6 to the tensioning disk 36 is possible in different relative positions of the axis of rotation 38.

From Fig. 13 it can be seen that due to the special design of the axis of rotation 38 and the rotary bushings 74, 75, the axis of rotation 38 can be inclined depending on the instep shape of the user or, depending on the instep size, more or less disappears in the bearing bush 74, 75.

14 shows a further embodiment of a second clamping system according to the invention. As already described in connection with FIG. 3, this serves to hold the inner shoe 10 down against the bottom of the foot part during ski descent, it being tensioned in the downward position of the shaft part 3, not shown in FIG. 14, and relaxed in the loosened position. On the shaft part 3, an extension 150 projecting into the foot part 2 is fixed with one end, the other end of which rests or engages on a functional lever 151 depending on the current position of the shaft. The extension 150 is again formed by an essentially U-shaped bracket 150, which runs between the outer shell and the inner shoe 10, being separated from the inner shoe 10 in the lower region of the foot part 2 by an insert 168. The pivot axes 4, which enable the shaft part 3 of the ski boot to pivot relative to the foot part 2, are only indicated in FIG. 14 and, as can be seen in FIG. 6, run laterally through the legs of the U-shaped bracket 150, through the foot part 2 and through the shaft part 3. The U-shape of the bracket 150 results from the transverse web 29 connecting the two legs, which runs in FIG. 14 below the insert 168 normal to the paper plane. The first tensioning system 30 is coupled to the second tensioning system in FIG. 14 via a tensioning rope 220. In contrast to the second tensioning system shown in FIG. 3, the tensioning rope 220 is connected at both ends directly to the crossbar 29.

Each pivoting movement of the U-shaped bracket 150 is thus transmitted directly to the tensioning cable 220. The tension cable 220 is thus connected at one end to the crossbar 29, for example by a clamped loop of the tension cable, and is connected by three eyelets 167 of the instep cover 21 running on one side of the first tensioning system 30 and further by one at the front end of the insert 168 to the opposite side through the corresponding eyelets of the second instep cover 21 of the first tensioning system 30. The second end of the tensioning cable 29 is fixed on the opposite side of the illustration in FIG. The position of the bracket 150 shown in FIG. 14 is that which leaves the tensioning cable 29 in the untensioned state and thus free. Thus the instep covers 21 of the first tensioning system 30 do not press the inner shoe 10 against the insert 168 of the foot part 2 and the ski shoe remains in its loose position.

By pivoting the shaft part 3 about the pivot axes 4 in the direction of the shoe tip, the lower end of the bracket 150 with the crossbar 29 moves in the direction of the heel part of the ski shoe, the crossbar 29 initially in the loose position on a support surface 161 of the function lever 151 abuts and on the course of the pivoting movement presses the function lever 151 freely supported on the underside of the outer shell of the foot part 2 about the axis 157 against the force of the helical spring 160 acting upwards thereon. When the groove 156 of the function lever 151 adjoining the support surface 161 is reached, the cross bar 29 engages in it, the spring 160 partially relaxes and presses the function lever 151 upward, whereby the possibility of movement in the direction of the shoe tip is blocked by the groove 156. This latching position defines the downhill position of the ski boot, the shaft part 3 of which is now inclined forward at a certain angle and cannot go into the loose position on its own. In the downward position thus defined, the first tensioning system 30 is pressed against the instep of the inner shoe 10 via the tensioning rope 220. The loosening position can only be achieved again by the actuating slide 153 running through the outer shell of the foot part 2 being pressed down by the skier. The function lever 151 is pivoted downward at its end opposite the bearing point 157 against the pressure of the coil spring 160, so that the latching action of the fillet 156 is canceled and the bracket 150 with the crosspiece 29 again in the direction of the shoe tip and the shaft 3 in the opposite direction can be moved.

For this purpose, three positions of the swivel bracket 150 and the associated positions of the function lever 151 are shown in FIG. 15, the helical spring 160 not being shown for the sake of clarity. The position of the U-shaped bracket 150, in which the cross piece 29 comes closest to the toe, corresponds to the loosening position in which the first tensioning system 30 is not pressed against the instep of the inner shoe 10. The middle position of the bracket 150, in which it presses with the crosspiece 29 against the groove 156, corresponds to the downhill position. After the groove 156, the function lever 151 is also provided with a deflection surface 162, on which the crosspiece 29 in the direction of the heel part of the foot part 2 within a predetermined angular range beyond the downward position up to a stop 158 beyond which the crosspiece 29 cannot go , is freely deflectable.

This freedom of movement is illustrated by the further position of the bracket 150 shown in FIG. 15, the transverse web 29 being pretensioned with respect to the heel part by a spring 159 (not shown), so that this freedom of movement within the downhill position can only be used by overcoming this spring force. This corresponds to the function of the spring 19 described in FIG. 4 and also serves to absorb shock during turns. If the skier makes a turn, he automatically knees and pushes the shaft part 3 further forward in the locked down position when he overcomes the spring force that presses the crossbar 29 against the groove 156. He can move the shaft part 3 forward until the crossbar abuts the stop 158. Thus, in the exemplary embodiment shown, the shaft 3 can still be pivoted forward by an angle of approximately 10 °. As a positive side effect, the first tensioning system 30 is pressed even more strongly against the instep of the foot via the tensioning rope 220, which leads to the desired effect that during a swing a still higher pressure is exerted on the instep and the balls of the feet, which means that the non-rotatable connection between shoe and foot can be increased considerably. During the swing there is therefore an even greater stability of the foot in the ski boot and thus an improved swing execution.

The increased tensioning of the tensioning cable 220 when the shaft part 3 is swiveled forward over the engaged downward position is also illustrated in FIG. 17, in which the spring 159 which generates the pretension and which presses the bracket 150 in the direction of the groove 156 is shown.

18 shows the spring 159 in the downward position in which it presses the crosspiece 29 against the fillet 156. As can also be seen very well from the comparison of FIGS. 14 to 18; the first tensioning system 30 is designed such that the axis of rotation 38 can be actuated in space within predeterminable limits, which can be selected so that different types of feet can be taken into account, in different positions relative to the first tensioning system 30 and therefore when the tensioning rope 220 is tensioned, the instep covers 21 can follow the shape of the foot and thus the foot is pressed down painlessly. Depending on the anatomical conditions of the skier, the first clamping system 30 can thus be pressed against the foot in such a way that a different instep height and a different instep slope have no influence on the well-being of the skier. FIG. 15 shows a position of the first tensioning system 30 which is suitable for a steep and high instep, while FIG. 16 shows a position for a flat, deep instep.

19 and 20, an alternative embodiment of the first tensioning system is shown again in the form of a central rotary tensioning system, whereby, compared to the tensioning system 30 shown in FIGS. 7 to 11, no rotating wing 62 is provided for lashing the instep covers 21, but rather one Ratchet lever 134, which is pivotally mounted about an axis 138 and is pressed laterally against the turntable 130 via a coil spring 135. By rotating it clockwise, the turntable 130 causes the tensioning disk 36, not shown in FIGS. 19 and 20, to be rotated via the axis of rotation 38 passed through the shell wall of the foot part 2, the tensioning disk 36 pulling on a pulling rope 34, which is only shown in FIG. 7 is shown and which is guided in the manner of a shoelace through eyelets 32 of the instep cover 21 such that the instep cover 21 is pulled laterally against the instep.

The ratchet lever 134 is supported on the spring washer 130 via two spring-loaded further levers 133, 132, which are pivotably mounted on the ratchet lever 134. In this context, spring-loaded means that the two levers 133, 132 are pretensioned about their pivot axis with one spring each, so that this presses the levers against the turntable 130. One spring-loaded lever 133 is held pivotably about the same axis 138 as the ratchet lever 134 and prevents the turntable 130 from rotating counterclockwise as long as the ratchet lever 134 is pressed against the turntable 130 by pressing against one of the sides of the turntable along the circumference arranged wedge-shaped teeth 131, while it can slide over the teeth 131 when the turntable 130 moves clockwise. The movement of the turntable clockwise occurs by moving the lever 134 back and forth between two angular positions, the spring-loaded lever 132 mounted thereon engaging in a tooth 131 when the lever is moved and this in the opposite movement of the ratchet lever 134 by a corresponding angle of rotation moved clockwise. During the backward movement, the lever 132 runs freely over the shoulder of the following tooth 131, engages in it and takes it again with the next depression of the lever 134. The skier climbs into the ski shoe with his inner shoe 10 and slightly tightens the inner shoe 10 with the first clamping system 30 in the relaxed position of the ski shoe. In the variant according to FIG. 19, this is done by moving the ratchet lever 134 back and forth until an easy-to-feel pressure of the first tensioning system 30 against the inner shoe 10 can be felt. As soon as the ratchet lever 134 is released, it locks the turntable 130 of the tensioning system 30 by means of the spring-loaded lever 133 against loosening of the pull cable. Now the tension of the first tensioning system 30 can also be maintained over a longer period of time, since when the ski boot is in the loosened position, the inner boot 10 can be pulled out of the ski boot and later reinserted into it without the first tensioning system having to be adjusted.

The ski shoe can then be brought into the downward position by moving the shaft 3 forward, the first tensioning system being tightened on the inner shoe by the tensioning rope. This presses the foot firmly against the bottom of the ski boot. The setting of the first clamping system can be released again by pressing the ratchet lever 134 as shown in FIG. 20 against the coil spring 135 and thus lifting the two spring-loaded levers 132, 133 out of their engagement position of the wedge-shaped gear wheels 131 of the turntable 130. Since the instep covers 21 of the first tensioning system 30 are still lashed tight when the ratchet lever 134 is opened, the first tensioning system 30 is under tension so that it relaxes and opens by itself, the turntable 130 being moved counterclockwise. This relieves tension on the foot. The ratchet mechanism itself is in no way limited to the described embodiment; instead, any function that fulfills the same function can be used to effect the tensioning of the first tensioning system.

A further variant of a ski boot according to the invention with a pulley-type cable pull system for tightening the tailgate 144, which in this exemplary embodiment is pivotably mounted about the pivot axes 4, is shown in FIG. 21. The tailgate 144 can be moved from an open position to a closed position and vice versa via a lever-operated rear cable system 205, 147.

A rear pull rope 205 is instead of the connecting rods 41 of the embodiment according to FIGS. 3 to 5 with their two ends fixed laterally on the shaft part 3, which is illustrated in FIGS. 22 to 23 in a side view of the ski boot. The rear cable pull system is composed of a rear cable 205 fastened with its ends to the shaft part 3 and of the tailgate 144 arranged cable deflection guides 206, 207, 208, which cable deflection guides 206, 207, 208 can be changed in their mutual distance by a pivot lever 212. The number of deflection guides within the scope of the invention can also be designed as rollers to reduce the friction. The distance between the bar 209 and the bar 211 can be preset by means of a locking screw 210 so that the desired tension of the tailgate and the shaft part can be set on the lower leg.

The beam 211 is slidably guided at its ends in rails 219 parallel to the beam 208, the two beams coming closest to one another in the one stop position of the beam 211 in the rails 219 and the two beams being the farthest apart from one another in the opposite stop position. In the position with the smallest distance, the maximum cable length of the rear pull cable 205 is given outside the rear cable system 147 and the tailgate 144 is thus to be opened the most, as shown in FIG. 23, while in the position with the greatest distance the bars The rear pull rope 205 is guided for the most part within the rear pull rope system 147 via the deflection guides 206, 207, 208 (FIG. 22). To move the two beams, the pivot lever 212 is articulated in the center to the ends of two extension arms 213, which at their other ends are each articulated to one end of the beam 211 guided in rails 219 and carrying two cable deflection guides 206, 207, the parallel spacing thereof to a further bar 212 carrying a cable deflection guide 208 can be changed between a minimum and a maximum distance by pivoting the pivoting lever 212, the open position of the tailgate 144 corresponding to the minimum distance and the closed position to the maximum distance of the bars 211, 212.

If the swivel lever is in its open position, as shown in FIG. 23, the maximum free rope length of the rear pull rope is accessible, so that the tailgate can be fully opened for entry with the inner shoe. When pivoting the pivot lever 212 about its pivot bearing in the direction of the tailgate 144, the arms 213 are moved so that the bar 211 moves away from the bar 209 and the free rope length of the rear rope 205 outside the pulley is shortened. The tailgate 144 is automatically moved in the direction of the shaft part 3, to which the ends of the rear pull cable 205 are fastened, via the guide openings 214 in the rear pull cable system 147 by simultaneously pulling in the rear pull cable 205. If, as shown in FIG. 22, the swivel frame 212 is depressed parallel to the tailgate 144, it is in a position secured against automatic release. In the closed position of the tailgate according to FIG. 22, the lower leg of the skier together with the inner shoe 10 with the tailgate 147 is pressed against the shaft part 3. By means of the adjusting screw 210, the locking effect can be adjusted accordingly by changing the distance between the bars 211 and 212, so that the clamping can be varied in accordance with the lower leg thickness of each skier.

24 shows a side view of a further embodiment of a ski boot according to the invention, only part of a tailgate 244 and the rear part of the foot part 2 being shown. The tailgate 244 serving the rear entry is pivotally mounted about the pivot axes 4 on both sides, about which the shaft part 3, not shown, can also be pivoted. The fully extended representation of the tailgate 244 is the closed, closed and the dashed line drawing the open, opened position, which is pivoted backwards for the entry of the liner. In order to easily get into the ski shoe with the inner shoe, a shoehorn element 250 is arranged with one end movable on the tailgate 244 and with its other end pivotable on the foot part 2 of the ski shoe. The shoehorn element 250 is thus integrated in the ski shoe, which is shown enlarged in FIGS. 25 and 26. As can be seen from these figures, the shoehorn element 250 has a saddle-shaped surface 255 which tapers into two symmetrical legs which delimit a recess 253 which is open at the edge and into which recess 253 the heel part, in particular the nose 13, when the tailgate 244 is closed , the inner shoe 10 is held. At each end of a leg there is an opening 252 through which pivot axes 285 arranged laterally in the foot part 2 extend.

The shoehorn element 250 also has an elongated hole 251 in the upper part in which a mushroom-shaped pin 256 arranged on the inside of the tailgate 244 is guided, the two stop positions of the pin 256 at the two ends of the elongated hole 251 of the open and the closed position correspond to the tailgate 244. When the tailgate 244 is pivoted from the closed to the rear open position, the mushroom-shaped pin 256 slides from the lower end of the elongated hole 251 to the upper end, thus pivoting the integrated shoehorn 250 into the open position. There, its saddle-shaped surface 255 now serves to make it easier for the inner boot to slide into the ski boot. As soon as the inner shoe has entered the ski boot, the tailgate 244 can be closed again by swiveling it forward. The mushroom-shaped pin 256 moves back into the lower position of the elongated hole 251.

In addition to the sliding aid, the integrated shoehorn 250 when the tailgate 244 is closed also fulfills the function of a pressing aid for the inner shoe, which holds it down at the rear end at the bottom of the foot part. This is done through the opening 253, which is free between the two legs of the shoehorn 250. This opening 253 is designed in such a way that it receives the protruding nose 13 of the inner shoe 10, which can be seen in FIG. 2, the lower edge of the saddle-shaped sliding surface 255 holding the nose 13 down in the closed position of the tailgate 246. This means that the inner boot 10 cannot slide out of the ski boot even with very abrupt movements.

Claims (33)

Ski boot (1) with a two-part outer shell consisting of a foot part (2) and a shaft part (3), the foot part (2) being connected to the shaft part (3) via a joint (4), and an inner shoe (10), characterized in that the shaft part (3) of the ski boot (1) can be pivoted from a loose position into a latching downhill position and can be locked in this position, an actuating device (28, 153) being provided for releasing the locking means that for holding the inner boot ( 10) a first tensioning system (30) is provided in the outer shell, which is free in the loose position, and that a second tensioning system (22) is provided for holding down the inner shoe (10) against the sole of the outer shell when the downward position is engaged. Ski boot according to claim 1, characterized in that the inner boot (10) can be inserted into the outer shell (2, 3) through a tailgate (44, 144, 244) pivotably arranged on the foot part (2). Ski boot according to claim 1 or 2, characterized in that the first clamping system is formed by a central rotary clamping system (30). Ski boot according to claim 1, 2 or 3, characterized in that the second tensioning system (22) holds the inner boot (10) down in the departure position by pressing the first tensioning system (30) against the instep part of the inner boot (10) against the sole of the outer shell. Ski boot according to one or more of claims 1 to 4, characterized in that the shaft part (3) is provided with an extension (15, 150) which projects into the foot part (2) and which in the foot part (2) is provided on stop or Locking devices (26, 151) are in or engage in the loose or downward position. Ski boot according to claim 5, characterized in that the extension (15, 150) of the shaft part (3) is formed by an essentially U-shaped bracket which runs between the outer shell (2, 3) and the inner boot (10) and at its ends is connected to the shaft part (3) that the joint (4) is formed by two pivot axes (4) penetrating the shell wall of the foot part (2) and one side part of the bracket (15, 150), that the loose position or the downward position by the stop or latching position of the crosspiece (29) of the U-shaped bracket (15, 150) in the interior of the foot part (2), and that the crosspiece (29) tensions the second clamping system (22) in the downward position, so that the first tensioning system (30) is pressed against the instep of the inner shoe. Ski boot according to claim 6, characterized in that the crossbar (29) is held in the loose position by a spring, preferably a helical spring (19) and can be locked in the downward position by means of a latching device designed as a latching flap (26), and in that the actuating device ( 28) is formed by a bracket (27) with an actuating knob (28 ') formed on the latching flap (26) and guided through the shell wall of the foot part (2), with which the crossbar (29) can be released from the downward position. Ski boot according to claim 7, characterized in that the latching flap (26) is held in its latched position by a spring, preferably a helical spring (25). Ski boot according to one or more of the preceding claims, characterized in that the second tensioning system is formed from two traction ropes (22) which are guided laterally by the first tensioning system (30) from the front part of the foot part (2) to the rear part. Ski boot according to one or more of the preceding claims, characterized in that the central rotary tensioning system (30) essentially consists of two instep covers (21) which can be displaced parallel to one another transversely to the longitudinal direction, with eyelets (32) arranged in the longitudinal direction on each instep cover (21) a lockable tensioning disk (36) arranged centrally over the instep covers (21) is formed, a traction rope (34) being guided through the eyelets (32) in the manner of shoe straps and fixed at its ends to opposite circumferential regions of the tensioning disk (36) and that on the two outer longitudinal sides of the instep cover (21) the traction cables (22) of the second tensioning system are passed through openings (35). Ski boot according to claim 10, characterized in that on the axis of rotation (38) of the tensioning disc (36) which is passed through the shell wall of the foot part (2) there is a turntable (6) with a foldable rotating wing (61). Ski boot according to claim 11, characterized in that the axis of rotation (38) is formed from a cylindrical central part (71) and at its ends each has a polygonal, preferably hexagonal cross-sectional area (72, 73) which is rounded off at the ends in a hemispherical manner, and that in the center of the turntable (6) and in the center of the tensioning disk (36) a respective polygonal, preferably hexagonal, bearing bush (74, 75) corresponding to the axis of rotation (38) in cross section is arranged so that the ends of the axis of rotation (38) Engage play in the bearing bushes (74, 75) and the power transmission from the turntable (6) to the tensioning disk (36) is possible in different relative positions of the axis of rotation (38). Ski boot according to claim 11 or 12, characterized in that the turntable (6) is subdivided on its underside by detent segments (67) into which a resiliently mounted detent pin (64) running radially to the disk is rotated when the pulling cable (34) is tensioned engages one after the other on the rotating wing (61), which can be released from the latched position by a release device (62) which is accessible on the outside of the ski boot (1). Ski boot according to claim 13, characterized in that the release device (62) is formed by a crescent-like release button (62) molded onto the locking pin (64) and partially surrounding the turntable (6). Ski boot according to one or more of the preceding claims, characterized in that a nose (13) is formed on the inner boot (10) in the region of the heel, with which the inner boot (10) into a corresponding recess (47) in the tailgate (44) intervenes. Ski boot according to one or more of the preceding claims, characterized in that the inner boot (10) is formed in the form of a slip and a profile (14) is formed on the underside of the inner boot (10). Ski boot according to one or more of the preceding claims, characterized in that the angle α between the loose position and the downhill position is 17 °. Ski boot according to one or more of the preceding claims, characterized in that the shaft part (3) and the tailgate (44) can be connected by connecting rods (41), preferably the connecting rods (41) in the region of the tailgate (44) can be connected by a plug-in closure are. Ski boot according to claim 18, characterized in that by closing a pivotable lid (5) arranged on the tailgate (44), tensioning elements (43) tension the connecting rods (41) by lever action. Ski boot according to one of the preceding claims 2 to 17, characterized in that the tailgate (144, 244) is arranged to be pivotable about the joint (4). Ski boot according to claim 20, characterized in that a shoehorn element (250) is arranged with one end movable on the tailgate (244) and with its other end pivotable on the foot part (2) of the ski boot. Ski boot according to claim 21, characterized in that the shoehorn element (250) has an elongated hole (251) in which a mushroom-shaped pin (256) arranged on the tailgate (244) is guided, the two stop positions of the pin (256) being on correspond to the two ends of the elongated hole (251) of the open and the closed position of the tailgate (244). Ski boot according to claim 20 or 21, characterized in that the shoehorn element (250) has a saddle-shaped surface (255) which tapers into two symmetrical legs which delimit a recess (253) which is open on the edge and into which recess (253) when the closure is closed Position of the tailgate (244) of the heel part, in particular the nose (13), the inner shoe (10) is held. Ski boot according to claim 23, characterized in that an opening (252) is provided at each end of a leg through which pivot axes arranged laterally in the foot part (2) run. Ski boot according to one of claims 20 to 24, characterized in that the tailgate (144) can be moved from an open position to a closed position and vice versa via a lever-operated rear cable system (205, 147). Ski boot according to claim 25, characterized in that the rear cable pull system is formed from a rear cable (205) fastened with its ends to the shaft part (3) and cable deflection guides (206, 207, 208) arranged on the tailgate (144). Deflecting guides (206, 207, 208) can be changed in their mutual distance by means of a swivel lever (212). Ski boot according to claim 26, characterized in that the swivel lever (212) is articulated in the center to the ends of two extension arms (213), each of which has at its other end one end of a two cable deflection guides (219) guided in rails (219). 206, 207) supporting beam (211) are connected in an articulated manner, the parallel distance of which to a further beam (209) carrying a cable deflection guide (208) can be changed between a minimum and a maximum distance by pivoting the pivoting lever (209), the The open position of the tailgate (144) corresponds to the minimum distance and the closed position to the maximum distance of the bars (211, 209). Ski boot according to claim 27, characterized in that an adjusting screw (210) is provided with which the distance between the bars (211, 212) can be preset. Ski boot according to one of claims 10, 12, 15 to 28, characterized in that a turntable (130) is arranged on the axis of rotation (38) of the tensioning disk (36) through the shell wall of the foot part (2), said turntable (130) along its circumference is provided with wedge-shaped teeth (131) into which a spring-loaded drive lever (132) and a spring-loaded locking lever (133) engage, both of which are mounted on a ratchet lever (134) which is pretensioned by a spring (135) and can be moved back and forth between two angular positions and which drive the turntable (130) when the ratchet lever (134) is moved back and forth only in one direction of rotation and lock in the opposite direction of rotation, the ratchet lever (134) being movable into a freewheeling position in which the turntable (130) can be freely rotated . Ski boot according to one of claims 6, 10 to 29, characterized in that the second tensioning system is connected in a tensile manner at its ends to the crossbar (29) of the U-shaped bracket (150) and between its ends by eyelets of the first tensioning system (30 ) and a tensioning rope (220) which is guided in the region of the tip of the ski boot in the bottom of the foot part (2) and which is guided. Ski boot according to claim 30, characterized in that a functional lever (151), preferably on the bottom of the foot part (2), is pivotably mounted against a spring (160), and in that the crossbar (29) of the U-shaped bracket (150) in the loose position rests on a support surface (161) of the function lever (151) and, in the downward position, engages in a groove (156) adjoining the support surface (161) of the function lever (151), whereby when the bracket (150) is pivoted from the release position in the downward position of the function lever (151) is pressed down against the force of the spring (160) and the spring (160) is partially relaxed again when it snaps into the groove (156). Ski boot according to claim 31, characterized in that the bracket (150) which is locked in the downhill position by actuating an actuating slide (153) which passes through the outer shell of the ski boot and is preferably arranged in the heel area and with which the function lever (151) counteracts the force of the spring (160) can be depressed, can be released from the locking position in the groove (156). Ski boot according to claim 31 or 32, characterized in that the U-shaped bracket (150) is held in the downward position by a spring (159) pressing its transverse web (29) into the groove (156), that one against the groove (156 ) subsequent deflecting surface (162) of the function lever (151) is provided, on which the transverse web (29) can be deflected beyond the downward position within a predetermined angular range while overcoming the force of the spring (159), the first clamping system (30) thereby the tensioning cable (220) is pressed even more against the inner shoe (10) in accordance with the additional deflection of the bracket (150).

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