DE60014752T2 - downhill - Google Patents

Abstract

Ski (1) comprises tip zone, skate zone and heel zone. Ski also comprises series of grooves (21-26) parallel to longitudinal of ski. External grooves (21, 23, 24, 26) are used to reinforce longitudinal ends of ski (7, 8). Middle grooves (22, 25) are lon than external grooves so as to ensure good longitudinal guiding of ski.

Description

Technical area

The This invention relates to the field of gliding sports and more specifically said the alpine skier. It refers in particular to the family the alpine skier with a narrow waist and with a relatively narrowed sideline.

State of the art

generally known the current tendency is to improve simplicity, i.e. the maneuverability and the comfort in particular by a gain in weight. These can by reducing the length the skis are preserved. So for about 10 years the average Length of a slalom ski to over 30 cm, being of average size over 2 m close to one size today Reached 1.70 m. The bulk of the size reduction was also made in the last years.

Complementary became observed that to obtain a sufficient load bearing surface the width of the skis, in particular in the vane zone, steadily increasing.

So In the same time interval, the width of the blade zone is one Slalomskis starting from about 85 mm at 102 mm, resulting in a Increase of twenty percent (20%) corresponds to the main part in the last few years.

In addition, will also observed a further modification with respect to alpine skis, namely the Tendency to accept increasingly waisted sidelines. This results from a development of alpine skiing technique.

The swings Namely, or curves are increasingly "cut", that is, the slipping of the Skiing is increasingly reduced at the end of the curve and very often not exists. In this case, the leadership of the swing is preferably carried out on the edge, which gives a gain in precision and speed provides. More specifically, the tendency for waisting the Sideline based on the increase in the difference between the width the blade zone and the width of the sliding zone (ski center) measured become.

So this difference has roughly doubled over the last decade, and the substantial increase focused on the last couple Years.

Under consideration the different developments of the dimensions of skis occurs such a problem of stability on when the ski is flat and at high speed on the Snow rests. It is going to happen a tendency to flutter in the transverse direction is observed, which is obvious to the skier as disturbing proves and increases the risk of falls.

Consequently is a first problem, its solution the invention makes the task of the transverse stability of a relatively short skis when flat and at high speed resting on the snow.

Further leads the Technique of curve cutting and driving the curve substantially on the edge to a problem of stopping the front and rear Ski ends in the curve with reduction of slippage or "chattering" phenomena.

Consequently is a second problem, the solution of which is the invention for Task that makes the stop and thus the bending and torsional rigidity a short ski, especially in its front and back Zones, such that a sufficient pressure around the edges while driving a cut Momentum is ensured.

The Invention aims at the simultaneous solution of these two problems, by proposing a short ski whose hold at high speed is greatly improved both when he is on the edge by the Pressure on the front and rear ends of the ski is increased, as well, when driving in a straight line, adding lateral friction to be controlled.

Disclosure of the invention

• – eine Länge von weniger als 1800 mm;
• – eine maximale Breite im Bereich der Schaufelzone zwischen 100 und 140 mm;
• – eine minimale Breite im Bereich der Gleitzone zwischen 60 und 100 mm.

The invention thus relates to an alpine ski having a blade zone, a sliding zone and an end zone, which comprises:

• - a length of less than 1800 mm;
• A maximum width in the area of the blade zone between 100 and 140 mm;
• - A minimum width in the range of the sliding zone between 60 and 100 mm.

• – einen unteren Teil, der von einem Gleitbelag gebildet wird, der durch metallische Kanten begrenzt ist und durch eine Verstärkungsschicht bedeckt ist,
• – einen Zwischenteil, der von einem Kern und Seitenwangen gebildet wird,
• – und einen oberen Teil.

The ski has a composite structure and comprises:

• A lower part formed by a sliding lining bounded by metallic edges and covered by a reinforcing layer,
• An intermediate part formed by a core and side cheeks,
• - and an upper part.

The ski also has at least one stiffening groove in the lower part, parallel to the central longitudinal plane, said groove giving the lining and the lower reinforcement a complementary deformation to a ribbing on the genann form reinforcing element, which improves its properties of bending stiffness.

With In other words, the ski according to the invention in the region of its covering one or more grooves, which simultaneously ensure a longitudinal guidance, when the ski is in a straight track and the lower reinforcement element an additional Give rigidity, which proves to be particularly effective, to increase the pressure on the edges when driving a swing.

With In other words, the ski has at least one groove passing through Deformation of the lower elements, namely the lining and the lower gain which covers this is made.

On this way it is possible for the ski, lateral Counteract dislocations when lying flat on the snow, and thanks to the same grooving, stiffness is created the better transmission allows the loads in the area of the edges.

Of the Ski of the invention is characterized in that it also has two arrangements of stiffening grooves which are parallel in its lower part to the middle longitudinal plane are attached, these grooves the lining and the reinforcement a complementary Give deformation to a ribbing in said reinforcing element and to improve its flexural stiffness properties, wherein a first groove arrangement is arranged in the region of the end zone and a second groove arrangement in the region of the blade zone is present is and in each arrangement the near the middle longitudinal plane arranged grooves a greater length than which have the grooves near the edges.

at a particular embodiment the grooves are exclusive in the blade zone or end zone, whereas the sliding zone has no groove.

On this way the stiffening in the zones is favored, the one increase the loads during require cornering. Thus, if the ski is a wider one Shovel, the grooves exclusively in the area of the blade zone to be available.

at the particular embodiment, in which the sliding zone of grooves is free, those in the end zone and The grooves present in the vane zone are colinear in that they are mutually adjacent are arranged aligned or offset from one another.

The Shape of the grooves may have a favorable profile. So wise in a preferred form, the grooves have a width greater than 5 mm, which can reach up to 15 mm, and a depth of more than 2 mm, which can reach up to 8 mm.

at a preferred form, the grooves have a circular arc-shaped cross-section which allows a good channeling of snow in the area of the covering. In contrast, their front and Stiff ends steadily, to only small fractures of the inclination to the inner reinforcements to cause.

Short description of drawings

The embodiments The invention and the resulting advantages are better the following description of embodiments with reference on the attached Drawings in which:

1 is a bottom view of a ski that does not have the features of the invention.

2 a sectional view of the ski of 1 along the plane labeled II, II.

3 is a bottom view of a ski according to an embodiment variant.

4 a sectional view of the ski of 3 along the plane labeled IV, IV '.

Embodiments of the invention

The invention relates to a ski 1 for adults, which has a short length L, typically below 180 cm.

The ski 1 can be divided longitudinally into three contiguous zones, namely a first vane zone 2 which is arranged in front, a sliding zone 3 on which the safety ties are mounted, and an end zone 4 behind the glide zone 3 ,

The skis invention tie to the family of skis, their blade zone 2 has a maximum width L ₁ between 100 and 140 mm.

Complementary indicates the sliding zone 3 of the ski a minimum width L ₂ between 60 and 100 mm. In this way, the skis of the present invention include, but are not limited to, the single family of skis paraboliques, which are intended for the technique known by the name "carving".

These skis, which are shorter than those used in the past, have a very fitted look Sideline, which allows the execution of strongly impressed by the edge curves, ie with a minimum of slipping.

Like in the 2 illustrated, such a ski has 1 in a sectional view a covering 6 which is intended to come in contact with the snow, and forms the sliding surface.

This topping 6 becomes laterally by metallic edges 7 . 8th Limited, which are intended to penetrate into the snow during the turns.

As in 2 represented, is this covering 6 with a reinforcing element 9 covered, which is present over a large part of the width of the ski. This reinforcing element 9 may have various configurations and may be, for example, a metallic reinforcement made of steel or an aluminum alloy. It may also be a fibrous reinforcement and glass fibers containing Kevlar ^® fibers or carbon fibers.

This ski has at least one in the covering 6 attached groove 10 parallel to the middle longitudinal plane 5 on.

These in the coating 6 existing groove 10 is due to deformation of the lower elements of the ski, namely the pad 6 and the reinforcing member 9 , generated. So has the reinforcing element 9 , which is above the surface 6 is arranged, also a groove 11 on, which forms a throat, in which the rib 10 the lining is fitted.

That's how the throat forms 11 of the reinforcing element a rib 12 which the reinforcing element 9 Gives flexural rigidity.

On This way, the zones of the ski in which these grooves exist are, an increased rigidity, which is especially for exercise of stresses in the area of the edges while driving a curve as welcome proves.

At the ski the 1 shows the surface 6 two grooves 10 . 15 on that along the middle longitudinal plane 5 of the ski and arranged by a flat zone 16 of the covering in the area of the sliding zone 3 are separated from each other.

In the illustrated form, the grooves present in the front and rear regions of the lining are 10 . 15 arranged in the same orientation, but the different grooves could be offset from each other.

How to get in 3 sees, includes the ski according to the invention grooves 21 - 26 which are associated with each other as an arrangement of mutually parallel grooves. The outer grooves 21 . 23 . 24 . 26 are especially intended to ski near the edges 7 . 8th to reinforce.

To ensure a good longitudinal guidance, have the grooves 22 . 25 near the middle longitudinal plane 5 lie, a greater length than that of the grooves 21 . 23 . 24 . 26 closer to the edges 7 . 8th lie.

Like in the 2 shown, the geometry of the groove 10 adopt a preferred profile. In order to limit the interruptions of the curvature and to simplify the manufacture, as far as possible rounded profiles are used, with abrupt interruptions of the slope are not excluded at certain points.

So shows the in 2 Ski shown a groove whose profile is a semi-ellipse whose width is between 5 and 15 mm and the depth between 2 and 8 mm.

Equally wise the longitudinal ends These grooves on a profile with gently progressive slope, which limits the deformation of the internal reinforcements.

• – eine gute Stabilität, wenn er in gerader Spur trotz seiner großen Breite verwendet wird;
• – eine gute Kapazität der Einprägung in der Kurve, insbesondere, wenn diese geschnitten wird.

From the foregoing, it is apparent that the ski according to the invention simultaneously comprises:

• Good stability when used in a straight track despite its great width;
• - a good capacity of the impression in the curve, especially if this is cut.

Claims (5)

Alpine skiing ( 1 ) with a blade zone ( 2 ), a sliding zone ( 3 ) and an end zone ( 4 ) and: - a length (L) of less than 1800 mm; A maximum width (L ₁ ) in the region of the blade zone ( 2 ) between 100 and 140 mm; - a minimum width (L ₂ ) in the region of the sliding zone ( 3 ) between 60 and 100 mm, said ski having a composite structure comprising: - a lower part composed of a sliding lining bounded by metallic edges and covered by a reinforcing layer; - An intermediate part, which is composed of a core and side walls; - and an upper part; characterized in that it also has two arrangements of stiffening grooves ( 21 - 23 . 24 - 26 ) in the lower part parallel to its central longitudinal plane ( 5 ), these grooves ( 21 - 26 ) the covering ( 6 ) and give the reinforcement a complementary deformation to a Ribbing ( 12 ) in said reinforcing element and to improve its bending stiffness properties, wherein a first groove arrangement ( 21 - 23 ) is arranged in the region of the end zone and a second groove arrangement ( 24 - 26 ) is present in the region of the blade zone and in each arrangement the grooves arranged close to the middle longitudinal plane ( 22 . 25 ) a greater length than that of the grooves ( 21 . 23 . 24 . 26 ) near the edges ( 7 . 8th ) exhibit. Ski according to claim 1, characterized in that at least two of the grooves are colinear. Ski according to claim 1, characterized in that the grooves have a width above 5 mm and preferably near 10 mm. Ski according to claim 1, characterized in that the grooves have a depth above 2 mm and preferably near 5 mm. Ski according to claim 1, characterized in that the grooves have a cross section in the form of an elliptical arc.