EP0907390B1 - Pair of skis for alpine skiing - Google Patents

Abstract

A pair of skis for alpine skiing, with asymmetrically waisted skis (1, 2), each ski (1, 2) at its outside comprising a sidecut (24) of heavier curvature than at its inside; to facilitate parallel guiding of the skis when going through curves, with equally loaded skis (1, 2), the waisting at the outside of each ski (1, 2) is rearwardly offset relative to that at the inside by a distance (X) in the range of centimeters, and the beginning of the waisting (24) at the outside of each ski (1, 2), following upon the shovel region, is outwardly offset as compared to the waisting (25) at the inside, by a distance (Y) in the range of millimeters; in this manner, when going in curves, when the two skis (1, 2) are guided at a distance (D) in the range of decimeters from each other, with the outer ski (1) rearwardly offset in travel direction relative to the inner ski (2), the waistings (24; 15) of the outside of the inner ski (2) and of the inside of the outer ski (1) describe at least approximately concentric arcs (16, 26).

Description

The invention relates to a pair of skis for alpine skiing, with asymmetrically tailored skis, with each ski on the outside has a more curved side shape cutout than on the inside.

With conventional skiing technique, when cornering the outer ski (i.e. the ski on the outside of the curve) one Ski pairs are loaded, whereas the inner ski is more or less unloaded remains. Accordingly, this skiing technique is suitable for cornering primarily the shape of the inside of each Outside skis important. For easier swing initiation have already been the most diverse in this context Ski geometries suggested, cf. e.g. the AT 387 147 B and the Corresponding FR 2 559 673 A, where for easier bow riding A specific, strong waist, especially in fresh snow It is also proposed that the front and rear folds in to pass straight sections. A comparable ski with straight sections in the blade area and in the end area and with a strong waist is also in DE 41 12 950 A1 described. There is also a different curvature of the Side shape cutouts on the inside or outside of the Skis, to adapt the driving behavior to the desired one Operating conditions, disclosed. According to the DE 41 12 950 A1 the curvature on the inside of the ski stronger be than those on the outside of the ski. On the other hand, result derive from the aforementioned FR 2 559 673 A and also from the AT 316 376 B ski geometries in which the outer sides of the Skis more curved side cutouts than the inside exhibit. According to AT 316 376 B, this situation follows then when the skis of a pair of skis, in which the preferred inside the skis is stronger than the outside, to be exchanged, so instead of a special suitability for short turns one for long giant slalom turns to achieve.

The well-known ski training has in common that they are for a conventional skiing technique are designed in which especially "on the inner edge" of the outer skis (or valley skis) is driven, with the respective shape or geometry of the Side shape cutout on this inside the suitability for shorter or longer turns, for easier turn initiation etc., is obtained.

A new skiing technique is the so-called "carving" technique, at that the skier tries when cornering, both skis load as evenly as possible; this new technology has its Exit taken from snowboarding, and similar to that of Snowboarding is made using the carving technique a swing under the same load on both skis, i.e. a Cornering, initiated simply by the legs in Area of the knee joints "folded", then the arch both on the inner edge of the outer ski and on the outer edge of the inner ski to be driven. Here the well-known Skis consistently cause problems because of the waists of the Given the inner edge of the outer ski or the outer edge of the inner ski Arches are not "parallel" to each other, but to each other to cut. This leads when cornering using the carving technique to the fact that the indoor ski is not or only with difficulty can be run parallel to the outdoor ski; it comes to crossing the skis, or the inner ski becomes the outer ski pulled away, causing falls.

It is now the aim of the invention, a pair of skis of the above To provide a way to remedy this and according to his training a special suitability for the carving skiing technique has.

The pair of skis according to the invention is of the type mentioned at the beginning characterized in that the waist on the outside each ski compared to that on the inside by a measure in the cm range is set back, when cornering, when the two skis at a distance from each other in the dm range the outer ski set back in the direction of travel compared to the inner ski, the waists of the outside of the Inner skis and the inside of the outer skis at least approximately Describe concentric arcs.

In the pair of skis according to the invention is characterized in that the respective skis not only on the outside compared to the Have a more pronounced curvature on the inside, but also the waistline on the outside of each Skis compared to the one on the inside (which takes into account the fact that a Cornering of the inner ski before the outer ski is led) maintain at least approximately concentric course of the arches, the waists on the outside of the inner ski or on define the inside of the outer ski. Through that approximately "parallel" arcs, the inner edge of which of the outer ski and the outer edge of the inner ski, despite the load on the inner ski, it also succeeds when driving the carving technique with the two skis when cornering a relatively wide ski guide generally parallel to each other to hold so that blending or the like is avoided.

To ensure parallel ski guidance when cornering through the Relocation of the outside waist in connection with the greater curvature of the outside waist if possible it is of particular advantage if the Center of curvature of the waists of the inside of the Outer skis and the outside of the inner skis at a center-to-center ski distance from about 30 cm to 50 cm, especially about 40 cm to 45 cm, and when the outer ski is set back compared to the inner ski from approx. 10 cm to 25 cm, in particular approx. 15 cm to 20 cm, essentially coincide.

To drive according to the concentric arcs that through the inner edge of the outer ski and the outer edge of the Inner skis are defined, with comparatively generally suitable, i.e. for any type of arch (tight or elongated) to facilitate suitable radii of curvature, it has also proven to be proven to be advantageous when the start of the waist at the The outside of each ski adjoins the shovel area in the Comparison to the waistline on the inside by a measure in the mm range is offset to the outside, the waist on the Ski outside is designed to extend to the rear. To this Way it becomes possible to change the radii of curvature of the outside or inside waists not too much from each other to differ or the extent of the relocation of the Waist on the outside of the respective ski opposite to keep that on the inside low; the difference of Radii of curvature can be, for example, only 2 m, or less than Amount to 10%. So can the radii of curvature with a pair of skis with a ski length of approx. 200 cm on the inside of the skis each with about 28 m and on the outside with about each 26 m; for shorter skis, for example with a length of 170 cm, the corresponding radii of curvature 26 m or 24 m. The preferred one Relocation of the waist on the outside of each ski compared to the waist on the inside (or in comparison for a symmetrical ski training) in the range of approx. 1 mm to (preferably) 1.5 mm shorter ski lengths (approx. 170 cm) and approx. 2 mm to 4 mm, preferably 2.5 mm, for larger ski lengths (about 200 cm).

On the other hand, it has been aimed at for attempts The concentricity of the arches has been shown to be possible and advantageous, that or if - more or less regardless of the ski length - the degree of setback of the beginning of the outside Waist of each ski in the area adjacent to the ski shovel is about 4 cm. Such a small setback is above all then easily possible if, as mentioned, the Waist start offset on the outside of the ski is.

For the desired parallel guidance of the skis when cornering has also become a version of the ski geometry as Conveniently proven, according to the waist on the outside every ski in the area of the ski end ends further back than that Waist on the inside of the ski. This training ends thus the outside waist of every ski - despite the greater curvature - behind the waist on the inside of the ski, seen in the direction of travel. It is for driving according to "parallel" sheets, if the measure by which the waist on the outside compared to that on the Inside ends further back, less than the measure of Reset the start of the waist in the adjacent area the ski shovel. In particular, it can be provided here that - again surprisingly essentially for all common Ski lengths equal - the degree of recessing the outside Waist in the ski end area is about 3 cm.

To prevent that due to the relocation of the Beginning of the outside waist of each ski between them Start of the waist and the so-called contact point in front of it, where the contact of the ski tread with the ground starts, and from where the upward-curved ski shovel extends stretches, one plows against the direction of travel broadening ski training is obtained, the one could have a braking effect, it is also from Advantage if the outside of each ski before the start of the Fitting straight to the blade part as well as diverging or preferably designed to run parallel to the longitudinal axis of the ski is. On the inside, the waist can be more conventional in itself Way from the concave curvature steadily to the convex Skip the curvature in the bucket area. This transition as well the transition to the straight part of the ski outside and from this in the convex shovel part on the outside of each ski can also be created by smoothly lining up curve sections, so-called Splines.

Fig.1 in einer schematischen Draufsicht ein Skipaar, und zwar nicht maßstäblich, sondern hinsichtlich der Form der außenseitigen Taillierung des Innenskis stark übertrieben, um so den erfindungsgemäß zu erzielenden Effekt besser zu veranschaulichen;

Fig.2 in einer schematischen Draufsicht, in größerem Maßstab, ein vergleichbares, ungefähr maßstäblich gezeichnetes Skipaar; und

Fig.3 ausschnittsweise in einer Draufsicht, in vergrößertem Maßstab, verglichen mit Fig.2, Details hinsichtlich der Versetzungen der außenseitigen Taillierung jedes Skis im Vergleich zur innerseitigen Taillierung.

The invention is explained in more detail below with reference to an especially preferred exemplary embodiment illustrated in the drawing, to which, however, it should not be limited. In detail, the drawing shows:

1 shows a schematic top view of a pair of skis, not to scale, but rather exaggerated with regard to the shape of the outside waist of the inner ski, in order to better illustrate the effect to be achieved according to the invention;

2 shows a schematic plan view, on a larger scale, of a comparable, approximately to-scale pair of skis; and

3 shows a detail in a top view, on an enlarged scale, compared to FIG. 2, details regarding the displacements of the outside waist of each ski compared to the inside waist.

In Figure 1 is a top view of a pair of skis schematically Shown cornering, the outer ski in the curve, the Outside ski 1, opposite the inner ski in the curve, the inner ski 2, set back in the direction of travel 3. The two skis 1, 2 are fitted, with the outer ski in the left ski in Fig. 1 1, a conventional symmetrical waist is shown, i.e. the side shape cutout 14 on the outside (i.e. from other side of the ski 2) and the side shape cutout 15 have the same curvature on the inside of the ski 1. For the Inner ski 2 has an outer side shape cutout 24 ' same curvature as the side shape cutout 25 on the inside illustrated with a dash-dotted line. Thereby when cornering, for example according to Fig. 1 with a right turn, due to the inside waist of the outer ski 1 or the outside waist of the inner ski 2 sheets 16 or 26 ' fixed, which are not concentric, cf. also the Center of curvature M or M ', but at a distance in front the skis 1, 2 cut each other. This leads to the fact that both skis 1, 2 while cornering using the Carving technology is not easily performed in parallel can be, but rather that the indoor ski 2 relative to The outer ski 1 runs away to the side or with the outer ski 1 crossed. The decisive factor here is, in particular the fact that the inner ski is usually used when cornering 2 seen in the direction of travel in front of the outer ski 1, as also shown in Fig.1. Beyond that too to take into account the center-to-center distance D of the two skis 1, 2, relative to the new carving skiing technique large and in the range of 30 cm to 50 cm, about 40 cm to 45 cm. Although this ski distance D by a more curved side shape cutout 14 or 24 'on the respective ski outside, compared to the inside Side shape cutout 15 or 25, could be compensated, i.e. by correspondingly large radii of curvature R for the curvature the inside side shape cutouts 15 and 25 in comparison to smaller radii of curvature r for the curvature of the outside Side shape cutouts 14 and 24 ', but lie through the longitudinal offset of the skis 1, 2 the centers of curvature (see M or M 'in Figure 1) still apart; with that will continue intersecting sheets 16 and 26 'obtained with the Inside of the outer ski 1 or the outside of the inner ski 2 be driven on.

However, in order to make the most typical of the carving skiing technique possible same load on outer ski 1 and inner ski 2 without the It would be possible to allow the danger of crossing skis 1, 2 required with the "inner edge" of the outer ski 1 or the "outer edge" of the inner ski 2 "parallel" arches 16, 26, i.e. concentric arcs 16, 26, with one and the same center M to drive. This is done in the present pair of skis achieved a special ski geometry, which is subsequently based on the Fig.3 will be explained in more detail. Especially the waistline, i.e. the concave curved side shape cutout 24, on the outside of each ski 1, 2 in comparison for waist, i.e. to the concave curved side shape cutout 15 or 25, on the inside of the respective ski 1, 2 to put back, which in connection with the smaller Radius of curvature r to achieve the outside waist of concentrically running arches 16, 26 at least approximately allows. Because here the longitudinal offset of the waists is still should be relatively large, which, among other things, with regard to a stable straight driving with such skis can be disadvantageous the waist on the outside of the ski is preferred shifted to the outside, this outward shift on The start of the waist, next to the ski shovel, is strongest and this outward displacement towards the rear end of the ski Zero runs. This is greatly exaggerated in Fig.1 for the right one Ski, the indoor ski 2, illustrated, this drawing Exaggeration is also related to the fact that the radii of curvature R, r are drawn briefly in relation to the ski length.

In Figure 2, the two skis 1, 2 are comparable Cornering (see sheets 16 and 26) approximately to scale drawn, the longitudinal offset of the respective outside Waist of skis 1, 2 compared to the inside The waist is in the area adjacent to the respective ski shovel 7, but especially in the area of the ski ends 8. More clear however, these geometric relationships result from the plan view drawn on a larger scale according to FIG. 3. at the ski drawn there, e.g. the ski 2, the concave begins curved side shape cutout 25 on the inside of the ski 2 at a point 9, which lies further forward, in the longitudinal direction of the ski seen as the point 10 of the beginning of the concavely curved Side shape cutout 24 on the outside of the ski 2. This Displacement in the longitudinal direction of the ski is in Figure 3 with dimension X specified. Furthermore, the outside waist, i.e. the Curve of the outside side shape cutout 24, in comparison to a dotted symmetrical formation, thus in comparison to a waist like that at the (left) inside of the ski 2 would correspond to a dimension Y offset to the outside, in the front section of the ski, adjacent the ski shovel 7. This outward displacement of the outside The waist is towards zero at the end of the ski, but is on Ski end 8 still a longitudinal offset of the outside waist (outside side shape cutout 24) to the rear by Dimension x compared to the waist on the inside of the ski 2, determine. The dimension x is preferably smaller than that Dimension X, as can be seen from the illustration in Figure 3. It is otherwise it is also possible that the waist (side shape cutout 24) on the outside of each ski 1, 2 to the extreme Ski end is enough.

Between the transverse lines running through positions 9 and 10 is concave on the outside of the ski 2 following the curved side shape cutout 24 (or 14 in the case of Skis 1) a straight section 11 is provided, which is preferred runs parallel to the longitudinal axis of the ski 2, possibly also diverging forward relative to the longitudinal axis of the ski to so in this area a plowing backwards Avoid geometry with the appropriate braking effect.

In the area of the transitions from and to this straight section 11 on the respective outside of the ski as well as in the area of the Concave-convex transitions near the respective ski shovel 7 or the limit curves are made at the respective ski end 8 individual smoothly merging curve pieces, so-called Splines, formed.

Experiments have shown that skis as shown and with conventional ski lengths, about 170 cm to 205 cm, the longitudinal offset of the waists at the front (dimension X) or at the back (dimension x) consistently the same and for example 4 cm or 3 cm can, with the outward displacement of the outside Waist in the front ski area (dimension Y) with the ski length changes; The dimension Y is for ski lengths in the range of 200 cm 2.5 mm, possibly 2.2 mm to 2.3 mm (2.5 mm is preferred) Viewed as maximum, although dislocations up to 4 mm are also possible); for shorter ski lengths, about 170 cm, The dimension Y is preferably approximately 1.5 mm, under certain circumstances even about 1 mm. Without this move Y would be Longitudinal offset X correspondingly larger (e.g. twice or 3 times as much) large). The radii of curvature R and r depend on Different ski lengths and can be used for ski lengths of approx. 200/205 cm for example 28 m or 26 m, with ski lengths of 170 cm for example, be 26 m / 24 m.

The largest ski width in the area of the shovel 7 can be like Studies have shown in the ski geometry described approx. 10 cm, with a ski length of approx. 200 cm, whereas the greatest width at the end of the ski 8 is approx. 8 cm with this ski length is. The width at the narrowest, approximately in the middle Location of the ski with a ski length of 200 cm is approximately 6 cm. With ski lengths of 170 cm, the corresponding values can roughly as follows: maximum width on the ski shovel 7: 8.8 cm; greatest width at the end of the ski: 7.6 cm; least Width (ski center): 6 cm.

The skis 1, 2 can be made according to conventional construction methods be made, for example, according to the sandwich construction or after Shell construction.

Claims (9)

1. Pair of skis for alpine skiing with symmetrically cut skis, each ski being cut in a more pronounced curvature on the outer side than on the inner side, characterised in that the cut on the outer side of each ski (1, 2) is farther offset than that on the inner side by an amount (X) in the cm-range, and when the two skis (1, 2) are guided at a distance (D) apart from one another in the dm-range when travelling round a bend with the outer ski (1) farther back in the direction of travel than the inner ski (2), the cuts (24; 15) of the outer side of the inner ski (2) and the inner side of the outer ski (1) describe an at least approximately concentric arc (16, 26).
2. Pair of skis as claimed in claim 1, characterised in that the curvature mid-point (M) of the cuts of the inner side of the outer ski (1) and the outer side of the inner ski (2) essentially coincide at a middle-to-middle ski distance of approximately 30 cm to 50 cm, in particular approximately 40 cm to 45 cm, and with a rearward offset of the outer ski (1) from the inner ski (2) of approximately 10 cm to 25 cm, in particular approximately 15 cm to 20 cm.
3. Pair of skis as claimed in claim 1 or 2, characterised in that the amount (X) of rearward offset of the start of the outer-side cut of each ski (1, 2) in the region adjacent to the ski tip (7) is approximately 4 cm.
4. Pair of skis as claimed in one of claims 1 to 3, characterised in that the start of the cut (24) on the outer side of each ski (1, 2) adjoining the tip region is outwardly offset from the cut (25) on the inner side by an amount (Y) in the mm-range, the cut (24) on the ski outer side extending towards the rear.
5. Pair of skis as claimed in claim 4, characterised in that the amount of offset of the outer-side cut (24) of each ski (1, 2) towards the outside is in the range from 1 mm to 4 mm, preferably 1.5 mm to 2.5 mm.
6. Pair of skis as claimed in one of claims 1 to 5, characterised in that the cut (24) on the outer side of each ski (1, 2) in the region of the ski end terminates farther back than the cut (25) on the ski inner side.
7. Pair of skis as claimed in claim 6, characterised in that the amount (x) by which the cut (24) on the outer side terminates farther to the rear than that on the inner side, is smaller than the amount (X) of the rearward offset of the start of the cut (24) in the region adjacent to the ski tip (7).
8. Pair of skis as claimed in claim 7, characterised in that the amount (x) of the rearward offset of the outer-side cut (24) in the ski end region is approximately 3 cm.
9. Pair of skis as claimed in one of claims 1 to 8, characterised in that the outer side of each ski (1, 2) extends in a straight and diverging arrangement before the start of the cut to the tip and preferably parallel with the ski longitudinal axis.

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