JP2002017941A - Glide board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a glide board having improved energy absorption performance. SOLUTION: This glide board (10) has at least one entropy elasticity inlay (16) provided in an optional position on the board between an upper layer (12) and a layer beneath the upper layer (14 and, and the like). The area of a board surface that is located above the entropy elasticity inlay is raised with respect to the rest of the board surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a sliding board,
The present invention relates to a gliding plate provided with at least one entropy elastic inlay at any position on the gliding plate between the layer above and the layer below it. In the present invention, the sliding board means, for example, a ski or a snowboard.

[0002]

BACKGROUND OF THE INVENTION Vibrations (energy waves) caused by bumps on a sliding snow surface of a ski and absorbed by the ski, for example when skiing, are bindings. To the skier via This results in significant physiological stress, especially on the skier, and his skiing abilities fall. In order to reduce this stress, it is necessary to attenuate the knock phenomenon (energy wave) from the ski blade to the center of the ski over the front of the ski in as many different frequency ranges as possible.

It is already widely known to attach a vibration absorbing plate to a ski body, for example from EP-A-419,779, which comprises an upper layer with a high bending strength and underneath it. It is made of an intermediate layer with low bending strength. In addition, in the above-described ski, a cushioning sliding block made of an entropy elastic inlay is provided near the surface in the binding area in the ski body.

On the other hand, a ski manufacturing method for manufacturing a so-called shell ski having an entropy elastic buffer layer in the binding region below the upper layer has already been described in DE-A-3,914,189. Have been.

An object of the present invention is to further improve a sliding board so as to further improve the performance of absorbing impact energy (energy waves) when skiing.

[0006] This object is achieved by the technical features of the present invention as set forth in claim 1. According to this feature,
The area of the surface located above the entropy elastic inlay is raised relative to the rest of the gliding plate surface. Thus, the present invention provides an entropy elastic inlay that is thicker and has a corresponding elasticity as compared to other layer structures.

[0007] Preferred embodiments of the invention are set out in the dependent claims followed by the dependent claims.

Thus, it is preferable to provide an entropy elastic inlay serving as a friction body between the upper ply and the surface layer. However, as a variant, the one or more upper plies may be recessed near the entropy elastic inlay so that the entropy elastic inlay extends into the recessed area of the one or more upper plies.

[0009] An entropy elastic inlay may be provided on the gliding plate depending on the desired cushioning behavior of the ski, the entropy elastic inlay may be, for example, starting from the middle of the gliding plate to its tip or the middle of the gliding plate. Starting from the part and extending to its tail.

[0010] Alternatively, the entropy elastic inlay may be provided on both sides with respect to the imaginary centerline of the gliding plate in each region between the middle and tip of the gliding plate and between the middle and tail of the gliding plate. It may be provided. In general, it goes without saying that combinations of the above structures are possible.

According to another preferred embodiment, the entropy elastic inlay may be provided both in the edge region of the gliding plate surface and in the edge regions on both sides. In this case, in addition to vibration absorption or vibration isolation, knocking, for example, from another ski or from a flexible pole to the upper edge of the ski can be easily absorbed.

[0012] The at least one entropy elastic inlay is formed by pressing the gliding plate into a shape having a smooth surface in a region where the entropy elastic inlay is provided.
As a result, if the entropy elastic inlay is not provided, it can advantageously exhibit a high elastic behavior such that the surface layer swells beyond the smooth gliding plate surface. Thus, a gliding plate having a three-dimensional surface structure can be manufactured using the entropy elastic inlay.

[0013] One or both sides of the entropy elastic inlay may be covered with a reinforcing layer. Such a reinforcing layer may comprise a thin stainless steel layer, a thin aluminum layer, and a correspondingly thin polyester film, an epoxy fiberglass laminate or an epoxy carbon laminate. The reinforcement layer is of a thin dimension and shape so that a three-dimensional bulge can be created in the surface of the area of the entropy elastic inlay, in which case the corresponding component is placed in the mold cover to cause the bulge. There is no need to provide it and the entropy elastic inlay becomes arched after removal from the mold cover, resulting in a bulge.

[0014] The entropy elastic inlay may be comprised of a natural or synthetic rubber material. The natural rubber material used for producing the entropy elastic inlay is 1 to 10% by weight.
Of natural rubber material mixed with sulfur. The synthetic rubber material may comprise a copolymer made of styrene and butadiene. The entropy elastic inlay may consist of a foam made of a natural or synthetic rubber material.

According to another advantageous feature, a viscoelastic vibration-damping layer consisting of mixed-cell polyether urethane (PUR) sold under the trade name "Silomer®" may furthermore be used.

[0016] Alternatively, the entropy elastic inlay may be comprised of a thermoplastic elastomer.

The structural details and advantages of the present invention will be described with reference to an embodiment shown in the drawings.

[0018]

DETAILED DESCRIPTION OF THE INVENTION A ski 10 (which is itself conventional) is shown in cross section in FIG. this is,
This is a so-called shell-type ski that covers the upper layer 12 in the form of a shell 13. The lower side of the ski is the same as
0 and a steel edge 22 attached to each side. A core 18 and an upper ply 14 (preferably having multiple layers) are deposited therein. For the production of the above-mentioned conventional skis, reference is made, for example, to DE-A-3,914,189. For example, the upper ply 14 of the embodiment as shown in FIG. 1 comprises, for example, epoxy fiberglass, laminate or prepreg, aluminum or epoxy carbon laminate or prepreg. An entropy elastic friction body 16 is provided between the upper ply 14 and the upper layer 12, and the entropy elastic friction body is based on a synthetic rubber material such as a copolymer made of styrene and butadiene in the present embodiment. Made of foam made. This entropy elastic inlay is centrally arranged in the illustrated embodiment and extends from the center of the ski to the tip or top bend of the ski, although details are not visible in the sectional view of FIG. The inlay 16 is bulging outward. This means that a portion of the upper layer 12 located above the entropy resilient inlay 16 bulges outward to create a raised area that protrudes beyond the gliding plate surface.

The embodiment of FIG. 2 is essentially the same as the embodiment of FIG. However, the area of the upper ply 14 where the entropy elastic inlay 16 is provided is interrupted so that the entropy elastic inlay 16 extends between the ski core 18 and the upper layer 12.

The features of the ski manufacturing method of the present invention can be explained with reference to FIGS. FIG. 3 shows a cross-section of the ski 10 during pressurization between an upper mold part 24 and a lower mold part 26, wherein the entropy elastic inlay 16 has an upper layer 12 and a core (individually shown in FIG. 3). Not). The upper ply 14 is interrupted in the area of the entropy elastic inlay 16.

FIG. 4 shows a ski manufactured according to the molding procedure of FIG. 3 after removal from the dies 24, 26. Due to the elastic behavior of the entropy elastic inlay, the surface layer 12 is pressed outward in the region where the upper ply 14 is interrupted, and a corresponding raised region as shown can be obtained. Thus, a slightly higher height position is obtained due to the elastic behavior of the entropy elastic inlay. The three-dimensional or three-dimensional design of the ski surface obtained in this way is necessary in the prior art and can be achieved without using a mold cover for the upper part 24 of the mold, which had to be a three-dimensional original design. .

FIGS. 5 and 6 show the position of the entropy elastic inlay 16 on the ski 10. In FIG. 5, for example, the entropy elastic inlay is located at the center line of symmetry of the layers in the front part and the rear part of the ski.

In FIG. 6, the ski 10 is shown with an entropy elastic inlay 16 mounted on both sides in the region before and after the binding between the upper layer and the core. In this way, in addition to the vibration damping effect, the effect of absorbing the impact on the edge is achieved.

[0024] The entropy elastic inlay may advantageously comprise a foam material made from a natural or synthetic rubber material. Thermoplastic elastomers can also be used.
The weight of the ski can be substantially reduced by using these lightweight materials. Conventionally, it is necessary to use a thermoplastic inlay to obtain a three-dimensional design of the surface portion and to use a mold cover of a design corresponding to the inlay, and as a result, a ski having a three-dimensional design surface portion is required. It was relatively difficult to make.

A further embodiment of the ski of the present invention is shown in FIG. 7, in which the upper ply 14
Are pulled down on core 18 as shells on both sides. The entropy plastic or viscoelastic layer 16 is provided both in the edge region of the surface 13 and in the regions on both sides. The advantage of this embodiment is that, in addition to the anti-vibration effect, knocking on the upper edge of the ski, which may occur due to impact on the edge from another ski or a flexible pole, for example, is due to the entropic elasticity. This means that the shock-absorbing layer absorbs much better than in designs where only the surface in the region of the upper edge is provided.

FIGS. 8 and 9 show an embodiment in which the shock absorbing means is embodied as a shock absorbing system using a reinforcing layer.
Is shown in In the embodiment of FIG. 8, a one-sided reinforcing layer is provided. The entropy elastic layer 16 is covered with an upper reinforcing layer 23 on the surface in this embodiment.

The viscoelastic layer of the embodiment shown in FIG. 9 is covered on the upper side by an upper reinforcing layer 23 and on the lower side by a lower reinforcing layer 23 '.

For example, a thickness of 0.025 mm, 0.038 mm,
Layers made of 0.051 mm, 0.127 mm or 0.254 mm stainless steel can be used as reinforcement layers. Also, layers made of aluminum having a thickness of 0.127 mm, 0.203 mm, 0.254 mm or 0.305 mm can also be used. 0.036 mm thick polyester films can also be used, as are epoxy glass fiber laminates or epoxy carbon laminates. The elasticity of the viscoelastic layer is sufficient to achieve the required three-dimensional shaping after the ski is removed from the mold, despite the provision of the reinforcing layer. The reinforcing layer on the other side is thin so that the surface of the viscoelastic layer area is three-dimensionally shaped after removal from the mold, even if it is provided, and even if no corresponding part is provided in the mold. Need to be selected.

According to an embodiment of the present invention, the entropy elastic shock absorbing layer is made of mixed cell type polyether urethane (PUR). Such cellular polyether urethane is known under the trade name “Silomer®”.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an embodiment of a ski according to the present invention.

FIG. 2 is a view similar to FIG. 1 showing a second embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a mold and a ski placed therein during a manufacturing process.

FIG. 4 is a cross-sectional view of the ski of FIG. 3 after being removed from the mold.

FIG. 5 is a view showing an embodiment of the ski of the present invention in which an entropy elastic layer is provided at various positions.

FIG. 6 is a view showing another embodiment of the ski of the present invention in which an entropy elastic layer is provided at various positions.

FIG. 7 is a cross-sectional view of another embodiment of the ski of the present invention, and (a) is a partially enlarged view.

FIG. 8 is a sectional view of another embodiment of the ski of the present invention, and (a) is a partially enlarged detailed view.

FIG. 9 is a cross-sectional view of another embodiment of the ski of the present invention, and (a) is a partially enlarged detailed view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Ski 12 Upper layer 14 Upper ply 16 Entropy elastic layer 18 Core 20 Running surface 22 Edge 23, 23 'Reinforcement layer

Claims (15)

[Claims] 1. A gliding plate, wherein at least one of the gliding plates is located at any position on the gliding plate between an upper layer and a layer located below the gliding plate.
A gliding plate provided with two entropy resilient inlays, wherein a region of the surface located above the entropy resilient inlay is raised relative to a remaining gliding plate surface. 2. The sliding board according to claim 1, wherein the at least one entropy elastic inlay is provided between the upper ply and the surface layer. 3. The one or more upper plies are concave near the entropy elastic inlay, and the entropy elastic inlay extends into a recessed region of the one or more upper plies. The sliding board as described. 4. The method according to claim 1, wherein the entropy elastic inlay extends from the middle of the gliding plate to its tip or extends from the middle of the gliding plate to its tail. The sliding board according to any one of the above. 5. An entropy resilient inlay is provided on both sides with respect to the imaginary center line of the gliding plate in each region between the middle portion and the tip portion of the gliding plate and between the middle portion and the tail portion of the gliding plate. The sliding board according to any one of claims 1 to 3, wherein: 6. The sliding board according to claim 1, wherein the entropy elastic inlay is provided both in the edge region of the sliding board surface and in the edge areas on both sides. 7. The at least one entropy elastic inlay is formed by pressing the gliding plate into a shape with a smooth surface in the area where the entropy elastic inlay is provided, and consequently if the entropy elastic inlay is provided. The sliding board according to any one of claims 1 to 6, wherein the sliding board exhibits a high elasticity behavior such that the surface layer swells beyond the surface of the sliding board that would otherwise be smooth. 8. The sliding board according to claim 1, wherein one or both sides of the entropy elastic inlay are covered with a reinforcing layer. 9. The sliding board according to claim 8, wherein a layer made of stainless steel, aluminum, polyester film, epoxy glass fiber laminate or epoxy carbon laminate is used as the reinforcing layer. 10. The sliding board according to claim 1, wherein the at least one entropy elastic inlay is made of a natural or synthetic rubber material. 11. The sliding board according to claim 10, wherein the natural rubber material used for producing the entropy elastic inlay comprises a natural rubber material mixed with 1 to 10% by weight of sulfur. 12. The sliding board according to claim 10, wherein the synthetic rubber material used for producing the entropy elastic inlay comprises a copolymer made of styrene and butadiene. 13. The sliding board according to claim 10, wherein the entropy elastic inlay comprises a foam made of a natural or synthetic rubber material. 14. The sliding board according to claim 10, wherein the at least one entropy elastic inlay comprises a thermoplastic elastomer (TPE). 15. The sliding board according to claim 10, wherein the entropy elastic inlay is made of foamed polyether urethane (PUR).