JPH0268083A - Ski, especially, ski for alpine and tour - Google Patents

Abstract

PURPOSE: To provide an effective buffering of the steel edge area highly keeping stability of the tracks of skis in the snow and running corresponding thereto by providing the ski with a horizontal layer consisting of each viscous flexible material attached on the steel edge on the edge side of about central 1/3 part of a ski 1, especially at the central part of the core. CONSTITUTION: Between a steel edge 10 and an aluminum lower girth 9, each foil bar piece 11 consisting of an elastomer material is placed to equalize stress between steel edges on one hand and lower girths on the other hand. Each of them constitutes an integrated structure and the structure of both outer core parts 5 and 6 extended only along the central 1/3 part of a ski is extremely important. The core parts 5 and 6 respectively consist of plural laminated horizontal layers 12 and 13 which are alternatively constituted of a viscous flexible material 12 and a comparatively hard but flexible material 13, for instance ABS material. Rubber, especially soft rubber, is preferably used as the viscous flexible material.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to skis, and more particularly to alpine or touring skis having an upper part, a center part, and a lower part.

According to the current state of the art, such skis are manufactured by adhesion of several layers. The core of such multilayer skis generally consists of wood or rigid foam (PU core) coated on the sides with a thermosetting synthetic resin layer material. The upper part of the ski comprises an aluminum plate and/or a GFK laminate as an upper girth attached to the core. On top of this is usually placed an ABS plastic layer, which in an additional processing step is decoratively formed by a multilayer coating. The lower part also consists of an aluminum layer or of glass fiber reinforced plastic, which layer forms a so-called lower girth and is adhered to the underside of the ski core.

On the other side of the lower girth a running coating is usually applied directly, the sides of which need to be bounded by a steel crown. The running surface is made of polyethylene, preferably transparent polyethylene, and has 1 to 2 +n
It has a thickness of m. The running surface can be decoratively formed on the side facing the ski core by means of diffusion markings or screen printing. The print profile can be seen through the transparent polyethylene surface.

The upper surface of the ski is usually decoratively formed by screen printing. A transparent film is then applied to the stamped upper surface. When the ski core is made of wood, it is preferred that the ski core consists of wooden boards that are perpendicular to the running surface and are glued together. However, flat wood plank structures are also known.

Finally, the configuration known from European Patent Application No. 232 484 is such that the ski core has at least three plates juxtaposed but not joined on the sides, so that both outer core parts and the inner core Relative movement between the two parts is possible while the other torsional strengths of the two parts remain unchanged. In this embodiment, the steel edge is connected to the upper girth layer via a strip-like layer which serves as a damping element and is made of a viscous flexible material, the width of which approximately corresponds to the width of the outer core. Although this structure is highly effective, it is extremely expensive to manufacture. Furthermore, it has been found that implementing this known structure over the entire length of the ski, as proposed in European Patent Application No. 232,484, is detrimental to the spur characteristics.

The invention provides a ski of the type mentioned at the outset, i.e. an integral ski core, in such a way that an effective damping of the steel edge area is achieved, while maintaining a high degree of fidelity of spurt and corresponding running stability. The aim is to improve the skis you have.

This object is achieved according to the invention by the features of claim 1. A corresponding significance of the invention is that only the central region of the ski is provided with a steel edge damping element, which is an integral part of each of the ski cores, i.e. as proposed in European Patent Application No. 232 484. The point is that it is not a part that is separated from the inner core, as is often the case. limiting the buffer area to the center of the ski, and
By fixedly connecting the buffer member to the ski core,
Firstly, effective steel edge damping and, secondly, consistent spur fidelity and running stability are simultaneously achieved. Skis made according to the invention are such that the skier is not prone to fatigue, even on particularly hard surfaces. This is because it is precisely in the pindung region that optimal damping is guaranteed.

Rubber, especially soft rubber, is suitable as the viscous flexible cushioning material. Particularly suitable are porous materials in which the pores are interconnected by fine conduits, and the pores can be filled with a fluid medium such as, for example, silicone fat. Fibrous materials are also suitable for shock and energy mitigation.

Advantageously, the viscous flexible horizontal layer consists of two outer, but integral parts of the core, each having an integral construction according to claim 3, but fixedly connected to the remaining core. According to claim 3, the outer core portions each consist of a plurality of superimposed horizontal layers, said horizontal layers comprising a viscous flexible material and a relatively hard but flexible material, such as acrylonitrile (IJ lubutagene). - Alternately composed of styrene (ABS) or the like.

Further details of the structure of the ski according to the invention are given in claim 4, and by means of the features according to claims 8 and 9, each ski can be appropriately assigned to a pair of even skis, or the left and right skis can be This is particularly suitable for classification into skis.

Thereby, a distinction is made between damping at the inner edge on the one hand and damping at the outer edge on the other hand, and in extreme cases it would also be possible to limit the damping structure to only the particularly loaded inner edges.

When constructing the outer core according to claim 3, the horizontal layers each extend to the lateral boundaries of the ski, so that no special side walls are required. This also simplifies the manufacture of skis according to the invention.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The ski 1 shown in the drawings has an upper part, a central part and a lower part. The center part consists of an inner core part made of an upright wooden board 4 and a main core 2 divided into two outer core parts 5.6, and the outer core parts 5.6 are each attached to the inner core part. Therefore, the core 2 is constituted as a whole. The upper part consists of an aluminum vi, 7 glued to the ski core 2 and an ABS layer 8 coated thereon. This layer can be printed using conventional methods. After printing, a transparent varnish is further applied in a conventional manner. The lower part of the illustrated multilayer ski 1 consists of an aluminum temporary 9 attached to the underside of the ski core 2 and a running surface 3 made of, for example, colored polyethylene, attached to this temporary. On the side of the aluminum lower girth 9 facing towards the ski core 2, a steel edge 10 formed at right angles on both sides along the running surface 3 is arranged, between this steel edge 10 and the aluminum lower girth 9. are each provided with thin foil strips 11 of elastomeric material for equalizing the stresses between the steel edge on the one hand and the lower girth on the other hand. In this respect, the structure is similar to known structures.

The construction of the two outer core parts 5.6, each of which is constructed in one piece and which extends only in the central - area of the ski, is of great importance. The core 5.6 each consists of a plurality of superimposed horizontal layers 12, 13, which alternately contain a viscous flexible material (horizontal layer 12) and a relatively rigid but flexible material (horizontal layer 12). Some material (horizontal layer 13), for example ABS
It is made up of materials. Rubber is a viscous flexible material.
It is particularly suitable to use soft rubber. The thickness of the viscous flexible layer 12 is in the range of approximately 0.3 to 1.5 mm, particularly preferably approximately 0.5 to 0.8 mm.

The width of the outer core 5.6 is equal to the steel edge 10 in the illustrated embodiment.
This corresponds to approximately twice the installation width of the

The outer core 5.6 is preferably of continuous taper or lancet-like design in the longitudinal direction starting from its center or ski center in each case to the end of the ski I, and is therefore preferably formed into individual horizontal layers 12.6. 13, in particular the ABS layer 13, is correspondingly designed in the form of a lancet.

As already mentioned at the outset, in special embodiments the longitudinal flexibility of the two outer cores 5.6 of each ski can be different, for example by different numbers of viscous flexible horizontal layers 12. be able to. In this case, the longitudinal flexibility of the outer core, which is respectively assigned to the inner half of the ski, is greater than the longitudinal flexibility of the outer core, which is assigned to the outer half of the ski. The length, height and/or width of both outer cores 5.6 of each ski can also be of different dimensions, preferably in each case the length of the core attached to the inner half of the ski. All or one of the length, height and width are each made larger than the corresponding dimensions of the core attached to the outer half of the ski.

In the illustrated embodiment, the uppermost horizontal layer and the lowermost horizontal layer 13 of the outer core 5.6 are each made of a relatively hard material, e.g. ABS.
It consists of

The aforementioned different hardness or damping effect of the two outer cores 5.6 can also be obtained by using viscous flexible horizontal layers 12 of different thicknesses.

As mentioned at the outset, the shovel portion and the rear end of the ski are each formed in a conventional manner.

That is, it does not have the type of shock absorbing elements mentioned above, and as a result the ski still has a high twisting strength and a correspondingly high degree of spur fidelity and thus good running characteristics.

Basically, the outer core portion 5.6 is disposed close to the shovel-shaped portion and the rear end of the ski, so that the height of the outer core portion does not decrease excessively in proportion to the decrease in the height of the ski body. It is preferable to arrange it within a range. In that case, the lancet-like structure of the outer core 5.6 is more prominent than the lancet-like structure of the ski body.

A further embodiment, which is not described in detail here, is characterized in that both longitudinal sides of the skid are cut with long grooves filled with a viscous flexible material, in particular soft rubber. In this case, no special outer core other than the integral structure is provided. This is a modified version corresponding to the ski according to the invention.

[Brief explanation of the drawing]

The drawing is a partial perspective view of a ski according to the invention. Symbol in the diagram

Claims (1)

[Claims] 1. An aluminum plate 7 and glass fiber reinforced plastic (GFK) whose central part is composed of a core 2 made of a single piece of wood and/or a rigid foam, and whose upper part is joined to the ski core 2. A plastic foil 8 made of, for example, acrylonitrile-butadiene-styrene (ABS) is placed on the plastic.
is pasted, the foil is painted (synthetic resin) with decoration applied in an additional processing step as the case may be, and the lower part is made of aluminum and/or glass fiber reinforced plastic (GFK). Garth 9
and a running coating 3, in particular made of polyethylene, whose sides are preferably bounded by steel edges 10, and between the lower girth 9 and the steel edges 10 there is in each case a thin strip of stress-equalized elastomer. In a ski, in particular an alpine or touring ski, consisting of an upper part, a center part and a lower part, on which the pieces 11 are arranged, the core 2 is attached to the steel edge 10 in the center part, in particular on the edge side of one area in the center of the ski 1. A ski characterized in that it comprises horizontal layers 12 each consisting of one viscous flexible material. 2. the viscous flexible horizontal layer(s) 12 is the outer core 5;
6. Ski according to claim 1, characterized in that the outer core is fixedly attached to the inner core. 3. The outer core portions 5, 6 each consist of a plurality of superimposed horizontal layers 12, 13, said horizontal layers being made of a viscous flexible material 12 and a relatively hard but flexible material 13, such as ABS,
3. Ski according to claim 2, characterized in that it is constructed alternately of wood, aluminum, etc. (ABS=acrylonitrile-butadiene-steel) 4. One item of claims 1 to 3, characterized in that the viscous flexible material is rubber, especially soft rubber, elastic rubber, etc., especially porous material. Or the skis listed in multiple items. 5. The thickness of the viscous flexible layer(s) 12 is approximately 0.3
Ski according to one of claims 1 to 4, characterized in that it is in the range mm to 1.5 mm, preferably about 0.5 mm to 0.8 mm. 6. The width of the outer core 5, 6 corresponds in each case to at least the installation width of the steel rim 10, preferably twice the installation width of the steel rim 10. Or the skis listed in multiple items. 7. The outer cores 5, 6 are each continuously tapered or lancet-shaped in the longitudinal direction starting from their center towards the end of the ski 1, and are therefore advantageously formed in individual horizontal layers 12.
Ski according to one or more of claims 1 to 6, characterized in that both or one of and 13 are correspondingly formed in the form of a lancet. 8. The vertical flexibility of both outer core parts 5, 6 of each ski 1 is different, and in particular the vertical flexibility of the core parts attached to the inner half of each ski is different from that of the outer core parts 5, 6 of each ski 1. Ski according to one or more of claims 1 to 7, characterized in that the longitudinal flexibility of the core attached to the halves is greater than that of the core. 9. All or one of the lengths, heights and widths of both outer core parts 5, 6 of each ski 1 are different, and the core parts attached to the inner half of the ski respectively are different from each other in the outer half of the ski. Ski according to one or more of claims 1 to 8, characterized in that the length, height and width of the core are greater than all or one of the dimensions associated with the core. 10. One or more of claims 1 to 9, characterized in that the uppermost horizontal layer and the lowermost horizontal layer 13 of the outer core parts 5, 6, respectively, are made of a relatively hard material, such as ABS, aluminum, etc. The skis listed in.