WO1991012860A1

WO1991012860A1 - Ski with integrated binding securing plates

Info

Publication number: WO1991012860A1
Application number: PCT/AT1991/000027
Authority: WO
Inventors: Wolfgang Nussbaumer
Original assignee: Kästle Aktiengesellschaft
Priority date: 1990-02-21
Filing date: 1991-02-13
Publication date: 1991-09-05

Abstract

A ski with at least one metal binding securing plate (10) in the ski body beneath the binding securing region and beneath at least one upper facing layer (3), whereby the upper facing layer (3) has one or more apertures already made during the production of the ski for the binding securing bolts, the limiting edges of which in the upper facing layer (3) surround the binding securing bolts with some clearance. The binding securing plate (10) is preferably secured in the body of the ski to at least one elastic layer (11, 12).

Description

Ski with integrated binding attachment plates

The invention relates to a ski with at least one metal binding fastening plate arranged in the ski body below the binding fastening region with at least one upper belt layer underneath.

The arrangement of a binding attachment plate in the ski body, which serves to receive the bolts of the binding attachment screws, is generally known. It is also known that, inter alia, also due to the connection between the binding parts and the ski body, in particular when the ski boot is clamped in, forces and tensions arise due to the flexing of the ski according to use, which not only stresses the material of the ski or the connection between the ski and binding parts, but also have an unfavorable influence on the bending characteristic of the ski. In addition, when the ski bends, there are changing distances between the toe and back of the binding, which in turn can lead to changing forces between the binding and the ski boot. On the other hand, shocks and vibrations of the ski are transmitted to the skier largely without damping via the conventional constructions of the binding attachment, unless relatively expensive additional damping devices are used.

The object of the invention is to largely avoid such harmful influences on the connection between the ski body, binding parts and ski boot in a ski construction of the type mentioned.

This is achieved according to the invention in that at least one top flange layer has one or more recesses for the passage of the bolts of the binding fastening screws, which are already prefabricated during ski manufacture, and the boundary edges of the recess (s) in the top flange layer contain the bolts of the binding fastening bolts at least in the longitudinal direction of the ski by far which include in Threaded holes engage in the binding attachment plate (s), which are preferably mounted in the ski body over at least one layer of elastomeric material.

Usually, the binding attachment plate is arranged in a recess of the ski core below the top flange. A single binding attachment plate extending over the binding area can be used for the assembly of the binding, or e.g. also a separate binding attachment plate for the front and rear jaws of the ski binding. Strip-shaped binding fastening plates or individual plates oriented in the longitudinal direction of the ski for each screw position are also conceivable.

Due to the fact that the boundary edges of the recesses in the upper belt layer surround the bolts of the binding fastening screws at a distance, the bolts in the openings of the belt layer can move transversely to their axis without hitting the opening edges. This in turn means that small compensatory movements between the upper flange and the ski binding are permitted without local tension peaks or notch effects occurring. The transverse mobility of the binding fastening screws offers a good possibility that the binding fastening plate, preferably mounted on at least one elastomeric damping layer in the ski body, actually transmits the damping effect to the ski binding.

The measure according to the invention, according to which the boundary edges of the prefabricated recesses in the upper chord layer

Enclosing bolts at a distance is particularly important if the belt layer is made of metal. In the case of an upper chord consisting of layers of both reinforced plastic and metal, it is sufficient if the recesses which have been made in the upper chord layer (or the upper chord layers) are made of metal. However, the prefabricated recesses according to the invention are not absolutely necessary in the "more flexible" layer made of reinforced plastic. It is sufficient if this belt layer when inserting the binding fastening screws are pierced through them.

The prefabricated recesses of the top flange layer can be elongated holes extending in the longitudinal direction of the ski, the length of which, at least to a small extent, also the width thereof, is greater than the diameter of the screw bolts of the fastening screws. Instead, a single prefabricated recess in the upper chord layer can be provided for the passage of all binding fastening screws. However, it is also possible for the prefabricated recesses for the binding fastening screws to be laterally open edge recesses in the upper belt layer.

The effect according to the invention, in particular with regard to the damping effect, can be further improved if the recesses in the upper belt layer are filled with a filler which is soft and preferably elastomeric in comparison with the material of the upper belt layer. In this case, even the filler body arranged in the recesses in the upper belt layer can protrude somewhat from the ski surface.

The preferred elastomeric mounting of the binding attachment plate (s) in the ski body can advantageously be realized in that the binding attachment plate (s) is (are) arranged directly or indirectly between layers of elastomer material. An elastomeric material is understood to be a polymeric material with rubber-elastic behavior. The elastomeric material can be cross-linked, as is the case with rubber, but can also show thermoplastic or visco-elastic behavior. Finally, the term "elastomeric material" also includes flexible foams.

In this way, the binding attachment plate is given a "rubber-elastic embedding" to a certain extent, which has a tension-equalizing effect, but also has a vibration-damping effect. This measure also prevents unwanted stiffening in certain areas and thus improves the bending characteristic of the ski. Furthermore, the rubber Mielastic embedding of the binding attachment plate to compensate for the changing forces between the binding parts and the ski boot.

In the usual case that the binding attachment plate is arranged in a recess of the ski core below the upper flange, the elastomeric layer arranged above the binding fastening plate can directly adjoin the overlying upper flange layer. . . . . .. ....

The fastening plate can, however, also be arranged in an attachment above the top flange or in an attachment between two top flange layers, a layer of elastomeric material being arranged at least in the region between the fastening plate (s) and the top flange layer underneath is.

The elastomeric layers, on or between which the binding attachment plate or the binding attachment plate are arranged, expediently each extend at least over the length of the binding attachment plate in question. But it is also possible, and especially with regard to the damping effect of the elastomeric layers, it is also advantageous if one or the other of the elastic layers extends over the length of the binding attachment area. The width of the elastomeric layer can correspond to the width of the binding attachment plate, but can also be wide to the extent of the ski width.

It can also be part of Vo in the sense of the effect according to the invention if there is a margin for the binding fastening plate between the front and / or rear end edge of the binding fastening plate and the front or rear boundary surface of the ski fastening plate, which, however, has a soft, preferably elastomeric Material can be filled.

The elastomeric layers according to the invention can have film thicknesses of up to 0.5 mm thickness, but also greater layer thicknesses exhibit. The latter has a favorable effect on the damping effect.

For the effect of the rubber-elastic embedding of the binding attachment plate, it is of course more favorable if the elastomeric layers lie directly on the binding attachment plate or are glued directly to the binding attachment plate. This will be the rule in particular if the binding attachment plate is arranged in the ski core under the top chord. In particular, however, when the binding attachment plate is located in an attachment above the top flange or between two top flange layers, a "neutral" intermediate layer, e.g. made of a core material (foam, light wood, honeycomb core material or the like), in which case e.g. the elastomeric layer can be formed as an intermediate layer between the attachment and the top belt layer underneath. In this case, it is even possible to dispense with the elastomeric layer which is otherwise also provided over the binding attachment plate, especially if the top of the attachment either through no belt layer (but rather only through an unreinforced surface layer) or merely from reinforced plastic (i.e. not made of metal) existing belt layer is covered.

The invention is explained in more detail below with the aid of exemplary embodiments.

1 shows a ski cross section of a first exemplary embodiment; Fig. 2 is a partial plan view of the associated top chord layer; Fig. 3 is a plan view of the binding attachment plate of the first embodiment. 4 shows the ski cross section of a second exemplary embodiment; in FIG. 5 this includes a partial plan view of the top chord and in FIG. 6 a plan view of the binding attachment plate; 7 is a partial longitudinal section of the ski according to the second exemplary embodiment. 8 shows the ski cross section of a third exemplary embodiment and FIG. 9 shows the ski cross section of a fourth exemplary embodiment. 10 shows the ski cross section of a fifth exemplary embodiment, FIG. 11 is the associated side view of a ski section, and FIG. 12 shows a top view of an upper belt layer.

The ski according to Figs. 1-3 has - as can be seen in Fig. 1, a surface layer 1 e.g. made of ABS plastic. There is an upper belt layer 2 made of reinforced plastic, e.g. made of a glass fiber plastic laminate. The top chord also has another top chord layer 3 made of metal, e.g. made of an aluminum alloy. Under the top chord 2,3 is the core 4 made of conventional core material (light wood, foam, honeycomb core material or the like.) Laterally, the core is through the side walls 5, z. made of phenolic resin, limited. The following layers are arranged below the core: the lower chord layer 6 made of metal, e.g. made of an aluminum alloy, also an intermediate layer e.g. made of wood or plastic (possibly, fiber-reinforced), the tread surface 8 e.g. made of polyethylene, and finally the steel edges 9.

In a recess of the core 4, the binding attachment plate 10 is made of metal, e.g. made of an aluminum alloy. A rubber sheet 11 is located above the binding attachment plate 10 and a rubber sheet 12 below the binding attachment plate 10. The rubber sheet 11 has the same length and width as the binding attachment plate 10. The rubber film 12, on the other hand, has a width which corresponds to the width of the ski and it extends at least over the longitudinal extent of the binding attachment plate.

The upper belt layer made of metal has - as can be seen from FIG. 2 - prefabricated elongated recesses 3, the length of which, to a small extent, the width of which is larger than the diameter of the screw bolts of the binding fastening screws. A filler body 14 made of a relatively soft material, in particular an elastomeric material, is inserted into these recesses 13 material such as rubber or appropriately adjusted plastic material (PU, ABS).

According to FIG. 3, the binding attachment plate 10 can be provided with edge incisions 15 in order to achieve better flexibility.

When mounting the binding, holes are drilled for the binding fastening screws which can penetrate into the core 4. The binding fastening screws then cut with their thread into the borehole wall, in particular also into the borehole wall of the binding fastening plate 10 made of metal. An exception is the upper belt layer 3 made of metal, which already has prefabricated recesses 13.

The ski according to the exemplary embodiment according to FIGS. 4-7 has a similar layer structure to the exemplary embodiment according to FIGS. 1-3, namely a surface layer 1, e.g. made of plastic, an upper belt layer 2 made of reinforced plastic, another upper belt layer 3 made of metal.

A binding attachment plate 10 made of metal is in turn arranged in a recess of the ski core 4. Below this binding attachment plate there is in turn a rubber film 12, the length and width of which correspond to the dimensions of the binding attachment plate. An elastomeric layer 11, which has a greater layer thickness than the rubber sheet 12, is arranged above the binding attachment plate 10, between the latter and the upper belt layer 3 made of metal. This elastomeric layer can be made, for example, of rubber or rubber-elastic polyurethane, ABS or the like consist. The elastomeric layer 11 extends over the entire width of the ski. Their longitudinal extent, as can be seen from FIG. 7, is greater than the longitudinal extent of the binding attachment plate 10. The front and rear end edges of the elastomeric layer 11 are chamfered, ie towards the ends of a layer thickness that runs out. From Fig. 7 it is also evident that between the front edges of the binding attachment plate and the recess in the core 4 can be a small margin, but can penetrate into the elastomeric material from the layer 11 or 12.

In contrast to the exemplary embodiment according to FIG. 1, the upper belt layer 3 made of metal does not have individual elongated openings 13, but rather a larger recess 13 for the passage of all binding fastening screws. A filler body 14 made of a soft, preferably elastomeric filler is arranged in the recess 13.

The binding fastening plate 10 in turn has edge incisions 15 (FIG. 6).

The embodiment according to FIG. 8 differs from that according to FIGS. 4 to 7 only in that the filler body not only has a recess in the upper belt layer made of metal, but also the upper belt layer 2 made of reinforced plastic and the cover layer 1 Plastic penetrates and towers over the ski surface. Due to the soft elastomeric material of the filler body 14, a contact surface with good damping properties for the ski binding and the ski boot is achieved in this way. 8, the binding attachment plate 10, which is arranged in a recess of the core 4, is also embedded according to the invention between two elastomeric layers 11 and 12.

In contrast to the previously described Ausführungsbeispie len in the embodiment of FIG. 9, the Bindungsbe mounting plate 10 is not arranged in a recess of the ski core so not under the top flange, but in an attachment above the continuous top flange layer 3 made of metal, for example made of an aluminum alloy. This attachment, which extends at least over the longitudinal extent of the binding attachment area, consists of the actual attachment body 16 made of core material (foam, light wood, honeycomb core material or the like, which essentially determines the shape of the attachment) in a recess of this attachment body 16 the binding plate 10 is made of metal. The top body is covered by a cover layer made of plastic, for example ABS plastic, which extends over the entire length of the ski and, if appropriate, also by a top belt layer 2 made of reinforced plastic which also extends over the length of the ski. In contrast to the previous exemplary embodiments, according to FIG. 2, an elastomeric layer 12 is arranged only below the binding attachment plate 10 and this, moreover, not directly below the binding attachment plate, but indirectly with the interposition of a "neutral" layer (attachment body 16). . Because in the embodiment according to FIG. 9 the binding fastening screws do not penetrate the upper belt layer 3 made of metal, one elastomeric layer 12 is essentially sufficient to achieve the effect according to the invention. However, it is of course also possible, in the exemplary embodiment according to FIG. 9, that is to say when the binding fastening plate is arranged in an attachment above the upper belt layer 3 made of metal, between the binding fastening plate 10 and the layers 1, 2 above it to arrange an elastomeric layer, for example a rubber film. Finally, one could also provide a further rubber film immediately below the binding attachment plate 10.

The ski according to the exemplary embodiment according to FIGS. 10-12 has essentially the same structure in the region of the core and the lower flange or the tread as the exemplary embodiment according to FIG. 1. However, the structure in the region of the upper flange including the binding fastening plate is different in some cases . Under a surface layer 1, for example made of plastic, there is an upper belt layer 2 made of reinforced plastic and another upper belt layer 3 made of metal. This upper belt layer 3 made of metal has lateral edge recesses 13 in the binding fastening area, as can be seen in particular from FIG. 12. Under the top chord layer 3 there is a layer 11 made of elastomeric material and underneath this layer 11 the binding attachment plate 10 made of metal is arranged. The binding attachment plate 10 extends over the entire width of the ski. Their lateral front edges are therefore exposed (Fig. 11). The elastomeric layer 11 and the upper belt layer 3 made of metal are also exposed and visible to the side, the latter except for the area of the edge recess 13 in which there is a filler insert 14 made of soft, preferably elastomeric plastic. The elastomeric layer 11 does not extend over the entire length of the ski, but protrudes at the front and rear beyond the longitudinal extent of the binding fastening plate 10 and encloses the front and rear end edge, the binding fastening plate. In the area of the edge recesses 13, the screw bolts of the binding fastening screws pass through to the binding fastening plate 10. A rubber film can optionally also be arranged under the binding fastening plate 10.

If desired, e.g. the ski bodies shown in FIGS. 1, 4 and 10 are surrounded by a plastic sheath which encloses the side surfaces and the ski surface.

As binding fastening screws, which are shown in the drawings as little as the ski binding parts to be fastened, e.g. the standardized ski binding screws according to ÖNORM S4032 can be used.

Claims

Patent claims

1. Ski with at least one binding attachment plate (10) made of metal arranged in the ski body under the binding attachment area and below at least one top belt layer (2, 3), characterized in that at least one top belt layer (3) has one or more, already recesses (13) prefabricated during ski manufacture for the passage of the screw bolts of the binding fastening screws and the boundary edges of the recess (s) (13) in the upper belt layer (3) surround the screw bolts of the binding fastening screws at least in the longitudinal direction of the ski at a distance which engage in threaded bores of the binding fastening plate (10), which is preferably mounted in the ski body over at least one layer (11, 12) made of elastomeric material.

2. Ski according to claim 1, characterized in that the prefabricated recesses (13) having upper belt layer (3) is an upper belt layer made of metal.

3. Ski according to claim 1 or 2, characterized in that in the case of an upper chord consisting of layers (2, 3) made of reinforced plastic and metal, the upper chord layer (s) (3) made of metal has the prefabricated recess (13) ( exhibit) .

4. Ski according to one of claims 1 to 3, characterized in that in an upper belt consisting of layers (2, 3) made of reinforced plastic and metal, only the upper belt layer (s) (3) made of metal, the prefabricated recesses ( 13) has (have).

5. Ski according to one of claims 1 to 4, characterized ge indicates that the prefabricated recesses (13) of the upper chord layer (3) are elongated holes extending in the longitudinal direction of the ski, the length of which, preferably also the width, is greater than the diameter of the Screw of the fastening screws.

6. Ski according to one of claims 1 to 4, characterized by a single prefabricated recess (13) in the .Oberurtschicht (3); for the passage of all binding fastening screws.

7. Ski according to one of claims 1 to 4, characterized ge indicates that the prefabricated recesses (13) for the binding fastening screws are edge recesses of the upper belt layer (3).

8. Ski according to one of claims 1 to 7, characterized ge indicates that the recesses (13) of the upper belt layer (3) with a soft compared to the material of the upper belt layer, preferably elastomeric ren filler (14) are filled.

9. Ski according to claim 8, characterized in that in the recesses (13) of the upper belt layer (3) an¬ arranged filler body (14) projects beyond the ski surface.

10.Ski with at least one binding plate made of metal arranged in the ski body under the binding fastening area, optionally according to one of claims 1 to 9, characterized in that the binding fastening plate (s) (10) immediately or indirectly between layers (11, 12 ) is (are) made of elastomeric material.

11.Ski with at least one binding plate made of metal arranged in the ski body under the binding fastening area, optionally according to one of claims 1 to 10, characterized in that the binding fastening plate (10) in an attachment above the upper flange (3) or in An attachment is arranged between two upper belt layers (2, 3), a layer (12) made of elastic material being arranged at least in the area between the binding attachment plates (10) and the upper belt layer (3) underneath .

12.Ski according to claim 11, characterized in that the elastomeric layer (12) is formed as an intermediate layer between the attachment and the underlying upper belt layer (3) and that between the elastomeric layer and the binding attachment plate (s) ( 10) a layer (16) made of core material is arranged.

13.Ski according to one of claims 1 to 12, characterized ge indicates that at least one of the elastomeric layers (11, 12), on or between which the binding attachment plate (10) is located, over the length of the binding attachment area extends beyond.

14.Ski according to one of claims 1 to 13, characterized ge indicates that between the front and / or rear end edge of the binding attachment plate (10) and the front or rear boundary surface of the ski body recess for the binding attachment plate (10) if necessary, there is a space filled with soft, preferably elastomeric material.

15.Ski according to one of claims 1 to 14, characterized ge indicates that the binding attachment plate (10) has edge incisions (15).