EP1543868B1 - Snow sliding apparatus, especially carving ski - Google Patents

Abstract

The esp. carving ski has a running face (10) of three sections, which is waisted in longitudinal direction. In the front (4) and/or the rear section (8), the running face is overlapped by an additional running face section (24,28). The additional section, and esp. the central running face section (6), define a second running face (20) with a second waist section with considerably larger radius of curvature. Main running face and additional running face sections are adapted to each other, so that with a change in the carving angle there is a corresponding change in the active radius of the waist section defined by the running faces. Both faces have side steel edges (17,27,29) to define a 'side cut'.

Description

The invention relates to a snow gliding device, in particular a carving ski, with a base tread which extends over a front, a middle and a rear region and which is waisted in the longitudinal direction.

Such snow gliders are known for example from the alpine ski trail. Meanwhile, the so-called. Carving skis have prevailed, which are characterized by a pronounced in the longitudinal direction lines. The advantage of this waisted ski is that when ankles the ski describes a curve along an active radius defined by the sidecut. The stronger a ski is waisted, the tighter theoretically a curve can be driven. Skis with strong sidecut are therefore very manoeuvrable, but tend when driving straight ahead to become very restless and unstable. Conversely, a slightly waisted ski directionally stable when driving straight ahead, but has a much lower maneuverability and is therefore more difficult to handle when cornering.

The conventional ski, especially the carving ski has revolutionized the cornering of alpine skiing because of its sidecut, but it has the disadvantage that the variation of curves with different radii is only possible for experienced skiers. Especially with strongly waisted skis, a slight angling of the ski already causes the initiation of the cornering. Especially with inexperienced skiers leads this abrupt change of direction of the more common to falls with no less dire consequences.

Some publications are known from the prior art, which seek to solve the above-mentioned problems.

This is how the German utility model describes DE 296 05 583 U1 a so-called Mehrkantenski. This is characterized in that its sliding surface consists of one or more stages, wherein at each step transition, a steel edge can be attached. The biggest advantage of this multi-edge ski is that it can be integrated with the same length of the ski a multiple of metal edge length. In addition, it is also possible to achieve an improved maneuverability or directional stability by means of a different sidecut of the individual steps of the ski. Thus, for example, DE 583 describes fitting the lowermost stage with little precision, since it produces good straight-line stability and then forming the upper stages in an increasingly waisted form, as they get more contact with the snow when they edge up, and then one due to their waisted shape better maneuverability of the ski condition. A disadvantage of this design is that over the entire ski length different edges with different sidecut extend. This leads to a high weight, increased resistance in straight-ahead as well as cornering and especially in a two-stage structure of the ski back to the problem of abrupt change of direction. Since depending on the upstand another edge acts as a direction guide, formed in this embodiment, no continuous intermediate area, which allows a different Fahrradius depending on the upstand.

The German Offenlegungsschrift DE 101 07 905 A1 also describes a carving ski, which receives an increased tread to solve the above-mentioned problem, whose outer edges are parallel to the center of the longitudinal axis of the ski. This new extra tread is slightly narrower than the waist of the original tread. The ski described here is therefore also constructed in several stages and therefore has the same advantages as they can already be found in DE '583. Accordingly, this disclosure naturally also has the above-mentioned disadvantages.

The present invention is therefore based on the object of further developing a snow gliding device, in particular a carving ski, in such a way that, in spite of good maneuverability, it has straight running, which is easy to control, even at high speeds. In addition, the present invention has the object, a snow gliding device in particular a carving ski, in such a way that it can pass substantially continuously variable curve radii.

The above object is achieved by a snow gliding device according to claim 1.

Consequently, this object is achieved by a snow gliding device, in particular carving ski, with a base tread which extends over a front, a middle and a rear region and which is waisted in the longitudinal direction, but not in the front and optionally in the rear region of the base tread in the middle region, this is superimposed by at least one additional tread portion which defines a part, in particular the middle part of the base tread, a second tread with a second sidecut with a substantially larger radius of curvature.

Characterized in that the second sidecut, with a substantially larger radius of curvature, is formed by a part of the base tread and by at least one additional tread portion, to obtain a ski with two side pieces, each of which defines a limit radius. Compared to the above-mentioned documents with a multi-stage ski structure, the snow slipper proposed here is much easier. In addition, the use of a shared base tread in the central region of the snow gliding device leads to an optimized tread, as there are no edges and gradients to prevent the gliding. The formation of the second sidecut with a, compared to the sidecut of the base tread - in the following Basistaillierung called - substantially larger radius of curvature, resulting in a not folded ski, this has a much improved directional stability.

When Ankanten the ski then increasingly engages the second sidecut, here forms a mixing area. Depending on the upright angle of the ski, an active edge is formed, which defines the active, ie effective radius of the ski. Thus, in the present embodiment, a snow gliding device, in particular a ski or carving ski, which is not limited by its fixed side geometry and thereby more or less suitable for short or long turns, but a snow gliding device, which can pass through a continuously variable radius depending on the upright angle , Consequently, with this snow glider both the carving, ie driving on the edge, of short as well as long turns possible. Due to the successive transition from the second sidecut to the base waist - depending on the upright angle of the ski - a "servo effect" regarding the ski guidance and the control behavior is also created. When the ski is raised, it is not an abrupt change in direction but a gradual approach to a maximum radius of curvature that is limited by the base waist. Thus, in this snow glider and the sudden tilting is no longer a danger point, since when the ski edges up the direction change is gradual and not abrupt.

As the active radius becomes increasingly smaller with increasing upstand angle, it is possible for the user to continuously change the curve radius. It can be assumed that the active radius is usually at a Aufkantwinkel of about 0 ° maximum and at a Aufkantwinkel of at least about 8-12 °, in particular 10 °, minimal. Of course, it is also conceivable to stagger ski models by areas, for example, to define a slalom ski whose minimum and maximum radius is below that of a downhill ski, which usually requires particularly large curve radii.

The cornering or the straight-line running of the ski according to the invention is defined essentially by the formation of the different sidecutouts. It has proven to be advantageous to form the waistings essentially of one or more structurally coordinated circular arcs. Empirical experience has shown that this is a suitable means of controlling the driving characteristics of a snow gliding device. The use of continuous curve radii is also a way to create a sidecut that leads to particularly positive ski characteristics. The formation of the base waist and / or the second sidecut such that the radius of curvature decreases from the front region and / or the rear region to the central region of the snow gliding device leads to a ski with pronounced "carver" properties. Such a ski follows when Ankanten exactly this sidecut. By a combination of the base and the second sidecut thus forms a carving ski, which is limited by a maximum and by a minimum radius of curvature, with a mixing area forms between them, which allows driving through almost any desired radius of curvature.

Forming the second sidecut with a substantially constant radius of curvature, the result is that the ski - if it is not edged - has an exact straight-ahead, with the risk of blending is minimized. In alpine skiing, such a form of training is the combination of a conventional alpine ski with a carving ski, since the maneuverability of the carver is combined with the exact and safe straight-line running of conventional alpine skiing. Incidentally, it should be mentioned that it is of course also possible to use several overlapping tread portions above each other, so that there are additional additional waistings three, four, and so on, which would further improve, for example, the edge grip when cornering.

To achieve precise cornering, it makes sense to limit the base tread and the tread portions that overlay them laterally by steel edges or comparable edges, so that they define a corresponding "side-cut". Of course, it is conceivable, depending on the required sliding properties or application areas of the ski, to use both different edge shapes and materials. It may also be useful to limit only the base tread with steel edges and reinforce the overlapping tread sections only by plastic boundaries. In addition, it should be mentioned here that, of course, the formation of ruts, as they are known from the prior art, can find their application in order to influence the driving characteristics of the ski.

A versatile applicability of the snow gliding device is the formation of the overlapping tread portions such that they are releasably secured to the tread side of the snow gliding device. This attachment can be carried out by the Skioberseite forth operable mounting screws, by quick release clips or by tongue and groove constructions. The advantage of a releasable attachment is the interchangeability of overlapping tread sections as needed. So it is conceivable, for example, tread sections to attach to the ski, which give the ski a stronger second sidecut. This would make the ski particularly agile and give it a very extreme minimum radius. If, on the other hand, a ski with a particularly stable directional stability is desired, this can be done by replacing the overlapping tread portions. By using tread sections that give the ski a lower second waist, this leads to a stable straight run. Of course, it is also possible to adapt the tread sections to changing snow conditions as well as to provide tread sections which, when worn, are easily exchanged for new tread sections.

An advantageous development is the formation of tread portions, which extend from the base running layer out toward the front or rear increasingly prominent. Depending on the size of this survey, the ski thus receives a changed response to the Ankanten. Of course, it is also conceivable to form the overlapping tread portions such that this elevation is adjustable. This can be done by means of adjusting screws, which can be actuated from the upper side of the ski, as was previously the case with the fastening of the overlapping running surface sections on the ski body. Of course, it is also conceivable in this respect to offer differently shaped tread sections, which the user attaches as needed to his snow gliding device, in particular his ski.

Accordingly, it is also advantageous to attach the overlapping tread portions with the interposition of elastic elements, in particular one, in particular shock-absorbing, elastomer layer on the ski. This elastic storage causes a damping of the ski and thus increases the controllability and ride comfort. Of course, it is also conceivable not only to form this intermediate layer as an elastic intermediate layer, but also to supplement it by thermoplastic elements which, depending on the ambient temperature, cause a changed ski stiffness.

Further embodiments of the invention will become apparent from the dependent claims.

In particular, the embodiment according to claims 12 and 13 is particularly noteworthy. This embodiment is characterized in that the additional tread portions are designed runner-like, in particular two spaced apart in Skiquerrichtung skids, which are bounded on the outside by a steel edge and fall inward either flat or stepped at the level of the base tread.

The base tread is thus superimposed in the front and optionally in the rear by a kind of "slide", wherein the respective outer boundary is within the outer boundary of the base tread.

Fig. 1

eine Ausführungsform des erfindungsgemäßen Schneegleitgeräts in einer Ansicht von unten;

Fig. 2

eine Seitenansicht der Ausführungsform nach Fig. 1;

Fig. 3-5

die Ausbildung einer aktiven Kante am Ausführungsbeispiel nach Fig. 1 in Abhängigkeit des Aufkantwinkels in einer schematischen Ansicht von unten; und

Fig. 6 und 7

eine zweite Ausführungsform eines erfindungsgemäßen Schneegleitgeräts in Ansicht von unten sowie in Seitenansicht.

The invention will be described with reference to embodiments, which are explained in more detail with reference to the figures. Hereby show:

Fig. 1

an embodiment of the snow gliding device according to the invention in a view from below;

Fig. 2

a side view of the embodiment according to Fig. 1 ;

Fig. 3-5

the formation of an active edge in the embodiment according to Fig. 1 as a function of the Aufkantwinkels in a schematic view from below; and

6 and 7

a second embodiment of a snow gliding device according to the invention in bottom view and in side view.

In the following description, the same reference numerals are used for identical and equivalent parts.

Fig. 1 shows an inventive snow gliding device or a ski in a view from below. This ski 1 comprises a front region 4, a middle region 6 and a rear region 8. A base tread 10 extends over these three regions (4, 6, 8). The ski 1 shown here is a typical carving ski with a pronounced base waist 12 Such a waist 12 allows passage of certain curve radii by the Ankans the ski about its longitudinal axis. In order not to lose the necessary traction and longitudinal guidance in this cornering, the ski, as is generally known from the prior art, steel edges 17, 17 'on. In addition, this is also known from the prior art, the ski 1 in the front region 4 comprises a blade 5 (see Fig. 2 ). According to the invention, the illustrated ski 1 in the front region 4 and in the rear region 8 each comprise an additional superposed tread portion 24 or 28. This tread portion is in this case (see Fig. 2 ) fastened with fastening means, in particular screws on the base tread of the ski 1 on the tread side 2. In Fig. 1 it is clear that these overlapping tread portions 24; 28 are narrower than the base tread 10. In addition, the radius of curvature of these tread portions 24; 28 in the corresponding area less than the radius of curvature of the base waist 12 of the base tread 10. To ensure good sliding properties are the overlapping tread portions 24; 28 formed so that between the base tread 10 in the central region 6 of the ski 1 and the overlapping tread portions 24; 28 there is a tangential transition.

In Fig. 2 it can be seen that the overlapping tread portions 24; 28 can be lifted out of the base tread 10 in the front area 4 and in the rear area 8. These elevations 26; 26 'allow the adaptation of the response of the ski 1. The larger the elevation 26; 26 ', the stronger the ski must be edged so that the steel edges 17, 27, 29 and 17', 27 ', 29' act as leading edges, ie active edges. On the leadership behavior of these edges and on the so-called active edge is in the Fig. 3-5 discussed in more detail.

In the Fig. 2 illustrated fasteners 40, 40 'allow the releasable attachment of the overlapping tread portions 24; 28 on the ski 1. Thus, depending on the desired ski behavior or environmental conditions, ie straight running, maneuverability, temperature conditions, etc., the overlapping tread portions 24; 28 replaced and replaced by others. It is of course also possible to provide the ski 1 only in the front region 4 with a superimposed tread portion 24, if desired, or to superimpose this portion 24 by at least one further section. The same naturally also applies to the rear region 8. Moreover, it is conceivable to use the transition region 34 or 38 (shown in FIG Fig. 1 ) also subdivide the base tread 10 into sections so that, for example, the base tread 10 can be releasably secured to the ski 1 in the central region 6. This allows them to be replaced to possibly adapt to changing snow conditions or to post-processing.

The Fig. 3-5 At a Aufkantwinkel α of 0 °, the second sidecut 22 of the ski 1 serves as a guide. This second sidecut 22 continues, as in Fig. 3 can be seen from the base detailing 12 in the central region 6 of the ski 1 and the second sidecut 22 of the overlapping tread portions 24; 28 together. At a Aufkantwinkel α of about 0 ° the ski serves the second sidecut 22 as a guide and causes due to the very small curvature stable straight running.

Will now as in the Fig. 4-5 can be seen, the Aufkantwinkel increased α, which means that the skier ankantet the ski over the longitudinal axis, there is a change in the active edge. At a Aufkantwinkel α of about 0 °, the active edge is formed by the sidecut 2. At a Aufkantwinkel of about 10 ° and larger, the base beading 12 forms the active edge. As in the FIGS. 3 and 5 visible, rejects the active edge Fig. 3 , formed by the central region 6 of the base insert 12 and the areas of the waisting of the overlapping tread portions 24, 28 in the front region 4 and in the rear region 8, a much smaller radius of curvature than the active edge in Fig. 5 , which is formed only by the base detail 12. This has the consequence that at a Aufkantwinkel α of at least 10 °, a minimum radius can be driven, so the ski is curve-oriented.

The mixing region, that is to say the region with an upright angle α between 0 ° and approximately 10 °, is shown schematically in FIG Fig. 4 shown. Here it is apparent that, depending on the upright angle α, the active edge varies. If the Aufkantwinkel α larger, the active edge in the front and in the rear area 4; 8 increasingly formed by the base detailing. If it is smaller, the edge of the overlapping tread portions 24; 28 in these areas as a guide. Consequently, the ski 1 according to the invention does not have, as is known from the prior art, essentially only one fixed radius of curvature, but allows the almost infinitely variable variation of the radius of curvature within the limit radii defined by the base waist 12 and in FIG Fig. 3 shown mixed second sidecut 22 are defined. Thus, the ski according to the invention is a snow gliding device, which is much more versatile, user-friendly and easier to control due to its novel "three-dimensional" tread design.

In the 6 and 7 is a modified embodiment of a ski according to the invention in plan view and in side view. All parts already on the basis of Fig. 1-5 are described, have the same reference numerals. In this respect, reference is made to the preceding description. The embodiment according to the 6 and 7 differs from the above-described embodiment in that the front and rear superimposed tread portions are each formed in the form of longitudinal skids 24 'and 28'. The outer boundary of these longitudinal skids is made by steel edges 27, 27 'and 29, 29', while the inner boundary is formed by an inwardly rounded step. Alternatively, it is also conceivable that the runners are formed from the outside to the inside sloping flat to the level of the base tread 10. It is also conceivable that the runners are limited on the inside, at least in the outer, opposite regions by a step relative to the base tread, while in the mutually facing areas, this step-shaped boundary merges into a stepless.

reference numeral

1

Snow glider, or ski

2

Tread face

3

top

4

front area

5

shovel

6

middle area

8th

the backstage area

10

Base tread

12

Basistaillierung

17, 17 '

steel edge

20

second tread

22

second sidecut

24, 24 '

superimposed tread portion

26, 26 '

survey

27, 27 '

steel edge

28, 28 '

superimposed tread portion

29, 29 '

steel edge

34

crossing

38

crossing

40

Fastener, or screw

50

elast. element

60

active edge

α

edging angle

Claims (13)

1. Snow-gliding device, in particular, a carving ski, with a basic running surface (10), which extends over a front (4), central (6) and rear region (8) and is waisted (12) in the longitudinal direction,
   characterised in that,
   only in the front (4) and optionally also in the rear region (8) of the basic running surface (10), but not in the central region, the latter is overlaid with at least one additional running-surface portion (24, 24'; 28, 28'), which, with a part, namely the central part, of the basic running surface (10), defines a second running surface (20) with a second waist (22) with a substantially-larger radius of curvature.
2. Snow-gliding device according to claim 1,
   characterised in that
   the basic-running surface (10) and the running-surface portions (24, 24'; 28, 28') overlaid on the latter at the front and optionally at the rear are matched to one another in such a manner that, in the event of a change of the edge angle (□) of the snow-gliding device, in particular, of the ski, a corresponding change of the active, that is to say, effective radius of the waist defined by the basic-running surface and overlaid running surface(s) takes place.
3. Snow-gliding device according to claim 2,
   characterised in that
   with an increasing edge angle (□), the active radius becomes correspondingly, increasingly smaller.
4. Snow-gliding device according to any one of claims 2 or 3,
   characterised in that,
   in the case of an edge angle (□) of approximately 0°, the active radius is maximal, and in the case of an edge angle (□) of at least 8° to 12°, in particular 10°, is minimal.
5. Snow-gliding device according to any one of the preceding claims,
   characterised in that
   the waist (12) of the basic-running surface (10) and/or the second waist (22) is formed substantially from one or more constructively, mutually-matched circular curves.
6. Snow-gliding device according to any one of the preceding claims,
   characterised in that
   the radius of curvature of the waist (12) of the basic-running surface (10) and/or of the second waist (22) decreases from the front region (4) and optionally from the rear region (8) towards the central region (6).
7. Snow-gliding device according to any one of the preceding claims,
   characterised in that
   the second waist (22) provides a substantially-constant radius of curvature over the front region (4) and optionally the rear region (8) towards the central region (6).
8. Snow-gliding device according to any one of the preceding claims,
   characterised in that
   the basic-running surface (10) and the running-surface portion (4) (24; 28) overlaid on the latter are limited at the sides by steel edges (17; 27; 29) or comparable edges and define a corresponding "side cut".
9. Snow-gliding device according to any one of the preceding claims,
   characterised in that
   the overlaid running-surface portion(s) (24, 24'; 28, 28') are attached in a detachable manner to the running-surface side (2) of the snow-gliding device (1), in particular of the ski, in particular by fastening screws (40) capable of being activated from the upper side (3) of the ski.
10. Snow-gliding device according to any one of the preceding claims,
    characterised in that
    the front and optionally the rear overlaid running-surface portion (24, 24'; 28, 28') extends respectively outwards from the basic running layer (10) in the direction towards the front or the rear projecting increasingly over the basic running surface (10).
11. Snow-gliding device according to any one of the preceding claims,
    characterised in that
    the overlaid running-surface portion(s) (24, 24'; 28, 28') are attached to the ski with the interposition of resilient elements (50), in particular of an elastomer layer, in particular with shock-absorbing effect
12. Snow-gliding device according to any one of the preceding claims,
    characterised in that
    the additional running-surface portions (24'; 28') are formed in the manner of a runner.
13. Snow-gliding device according to claim 12,
    characterised in that
    at the front and optionally at the rear, the additional running-surface portions (24', 28') are formed respectively by two runners disposed at a spacing distance from one another in the transverse direction of the ski, which are limited at the outside by a steel edge (27, 27'or respectively 29,29') and taper towards the inside either in a flat or in a stepped manner to the level of the basic running surface (10).

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