EP0929350A1

EP0929350A1 - Binding supporting plate for a ski

Info

Publication number: EP0929350A1
Application number: EP97934433A
Authority: EP
Inventors: Uwe Emig; Reinhold Geilsdörfer; Markus Gramlich
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-28
Filing date: 1997-07-19
Publication date: 1999-07-21
Also published as: DE19630367A1; US6079731A; WO1998004324A1

Abstract

A binding supporting plate (1) has a base plate (3) which faces the top side of a ski (6) and can be secured thereto and a bearing plate (3) arranged between the base plate (2) and the binding or shoe sole. An intermediate plate (4) made of an elastomer material which can be elastically deformed by the forces occurring between the ski (6) and the shoe during skiing is arranged between the base plate (2) and the bearing plate (3). A deformation of the intermediate plate (4) can cause the bearing plate (3) to move relative to the base plate (2) transversely to the longitudinal direction of the ski (6). The bearing plate (3) can be supported on the base plate (2) by guiding elements. The displacement of the bearing plate (3) transversely to the longitudinal direction of the ski (6) is limited by the guiding elements to a variable extent which depends on the elastic deformation of the intermediate plate (4).

Description

Binding carrier plate for a ski

The invention relates to a binding carrier plate for a ski composed of several elements, with a base plate facing the upper side of the ski and attachable thereon and a carrier plate arranged between the base plate and the binding or the shoe sole, on which the binding can be fastened.

Binding carrier plates are used to achieve better power transmission between the boot, the binding and the ski. They are also intended to increase the shoe position on the ski, which increases the edge pressure when the ski is edged and facilitates the initiation of turns. In addition, binding carrier plates are used to dampen vibrations, for which purpose intermediate layers and support surfaces made of rubber-elastic material are used.

In a known binding carrier plate of the type mentioned at the beginning, the base plate consists of a jacket shell which surrounds a cavity filled with rubber. The jacket shell is provided with several openings on the underside of the base plate, from which the rubber protrudes somewhat to form a contact surface. A support plate is arranged on the base plate, which is composed of two fixed end plates with fastening holes for the binding elements and an intermediate flexible plate held by the end plates, which forms the footprint for the shoe. To attach this known binding carrier plate, the end plates are screwed onto the ski, the screws penetrating holes in the base plate.

In the known binding carrier plates, the position of the binding and boot relative to the ski is immutable. The skiing properties can only be influenced by the overall height of the binding carrier plate and the shift in force that can be achieved when edging the ski.

In contrast, the invention is based on the object of creating a binding carrier plate of the type mentioned at the outset which improves the skiing properties of the ski by means of a controllable lateral displacement of the force transmission point between the shoe which is independent of the overall height the ski and which is able to effectively dampen ski vibrations and impacts from the slopes.

This object is achieved according to the invention in that an intermediate plate made of an elastomeric material is arranged between the base plate and the carrier plate, which can be elastically deformed by the forces occurring between the ski and the boot during skiing, in that the carrier plate is deformed by a deformation of the intermediate plate is movable relative to the base plate transversely to the longitudinal direction of the ski and can be supported on the base plate via guide elements which limit the movement of the carrier plate transversely to the longitudinal direction of the ski to a variable dimension dependent on the elastic deformation of the intermediate plate.

In the binding carrier plate according to the invention, the carrier plate with the binding and the shoe held by the binding can be moved transversely to the running direction of the ski with respect to the base plate and the ski. As a result, the center of the power transmission can be shifted from the center of the ski to one side or the other. This shift is controlled by the interaction of the elastomeric intermediate plate and the guide elements and limited to the driving conditions in which the ski is bent up in order to achieve a stronger edge pressure. If the ski is standing with its tread completely on the slope under normal load, the support plate is centered with respect to the base plate by the elastomeric intermediate plate and the guide elements and stabilized in this position.

The binding carrier plate according to the invention has numerous advantages. Compared to the prior art, improved skiing properties are achieved by a more favorable ratio of the bending angle of the skier's knees to the folding angle of the ski edge. The control behavior becomes more precise and the contact edge of the ski's control areas is reduced with the edge. The tendency of the ski to slip away when edging in steep terrain, on hard ground or with extremely tight turns is significantly reduced. Furthermore, higher cornering speeds can be achieved with long turns, whereby the skis run on a wider piece of the base with a flatter edge angle. Acceleration is increased at the exit of the curve. Another important property of the binding carrier plate according to the invention is the strong damping of the transmission of shocks and vibrations from the ski to the boot and the reduction of vibrations of the ski through the elastomeric intermediate plate, which enables a gentle and fatigue-free skiing. By varying the elasticity of the intermediate plate and the guide elements, the extent of the load-dependent displacement of the standing position can be varied within a wide range with a uniform overall height of the binding carrier plate. Since the properties of the binding carrier plate according to the invention simulate a greater overall height than their actual overall height, their overall height can remain relatively limited, which leads to a weight saving and makes it easier for the skier to get used to.

A particularly advantageous embodiment of the binding carrier plate according to the invention is one in which the guide elements consist of two groups of tension members which penetrate the intermediate plate and are anchored at one end to the base plate and at the other end to the carrier plate, viewed in the longitudinal direction, the Tension members of one group connect the left side of the base plate to the right side of the support plate and the tension members of the other group connect the right side of the base plate to the left side of the support plate. The described arrangement of the tension members ensures a stable central position of the support plate, with torsional forces about a vertical axis also being absorbed by the tension members. The desired lateral displacement of the carrier plate with respect to the base plate is only possible by compressing the elastomeric intermediate plate, the respective group of tension members limiting the deformation path and ensuring the parallel alignment of the carrier plate with the longitudinal axis of the ski. Furthermore, the tension members bring about a streamlining of the power transmission that is important for the control behavior. According to the invention, the tension members can consist of individual strips, strips or leaflets, the ends of which are anchored in the base plate or in the carrier plate. An embodiment in which a plurality of tension members consist of a continuous band, strip, rope, wire or the like is particularly advantageous. In this way, the integration of the tension members in the manufacture of the binding carrier plate can be considerably simplified. A braided, woven or twisted, high-strength fiber material, for example made of carbon fibers, glass fibers, plastic fibers or from metal threads, can be used as the material for the tension members. The ends of the tension members can be attached in a simple manner by casting them into the base plate and the support plate. If such a manufacturing process is not applicable, for example for reasons of material, then you can: According to a further proposal of the invention, the ends of the tension members are inserted into grooves in the base plate or in the carrier plate that are open to the intermediate plate, and that the grooves for fixing the ends of the tension members are potted with a suitable material, for example the material of the intermediate plate are. To protect the fastening ends and connecting pieces of the tension members, longitudinal grooves can be provided on the outside of the base plate or the carrier plate, in which the through holes open.

Another advantageous possibility for fastening the ends of the tension members provides that the base plate and the support plate have through-bores through which the tension members are guided, the ends of the tension members protruding from the holes being fixed to the respective plate. It is particularly advantageous here if a band, strip, rope or wire is passed through the through bores in a meandering manner to form the tension members. With this configuration, there is also the possibility of tensioning the individual tension members before their ends are fixed, and in this way providing the elastomeric intermediate plate with a compressive prestress.

If the tension members consist of a rigid element, for example a pin, a sheet metal strip or the like, which, when the distance between its fastening ends is reduced, cannot yield or deflect by bending, the ends of the tension members must be fastened in such a way that only tensile forces are transmitted, while a displacement with respect to the respective plate is possible under pressure.

According to a further proposal of the invention, the support plate can have on its underside facing the intermediate plate a guide element formed by a pin, a rib or the like and rigidly connected to the support plate and projecting with its free end into a recess in the base plate in which it is movable perpendicular to the plane of the plate and can be pivoted about a central axis running in the longitudinal direction of the plate. In this embodiment of the binding carrier plate, the position of the carrier plate relative to the base plate is stabilized by one or more guide elements arranged in the central plane perpendicular to the individual plates, and a defined pivoting movement of the carrier plate about the axis of the guide elements is predetermined, whereby the desired dependence of the lateral displacement of the carrier plate on the load on the elastically deformable intermediate plate is achieved when edging.

The axis of the pivotable mounting can be formed, on the one hand, by the fact that the free end of the guide element has a thickening with spherical, cylindrical or knife-shaped contact surfaces, which is mounted almost without play on parallel side walls of the recess in the base plate. On the other hand, the pivot bearing can also be designed such that a space is provided on all sides between the walls of the recess in the base plate and the free end of the guide element, which space is filled with an elastomeric material, in particular the material of the intermediate plate. It can also be advantageous here if the guide element has the shape of a cone or a triangular prism which protrudes with its tip or edge into an analogously shaped recess in the base plate. In order to limit the pivoting movement of the carrier plate to a maximum value, fixed stops can be provided on the base plate, on which the carrier plate or the guide element can be supported.

The individual plates of the binding carrier plate according to the invention can have a rectangular cross section. Deviating from this, it can also be provided that the contact surfaces facing the intermediate plate on the base plate and the carrier plate are curved around an axis running in the longitudinal direction of the plate, the contact surface of the base plate being convex and the contact surface of the carrier plate being concave. This design of the binding carrier plate is particularly advantageous in connection with the crosswise arranged tension members and favors the lateral extension of the carrier plate when edging.

In order to avoid influencing the bending line of the ski by the binding carrier plate, according to a further proposal of the invention the base plate can consist of two parts which are arranged one behind the other in the longitudinal direction and are relatively movable. If the base plate is made in one piece, influencing the bending line of the ski can also be avoided by a known articulated suspension of the base plate. The invention is explained in more detail below on the basis of exemplary embodiments which are illustrated in the drawing. Show it

FIG. 1 shows a side view of a binding carrier plate mounted on a ski according to the invention,

2 shows a transparent top view of a binding carrier plate with cast-in tension members, FIG. 3 shows a cross section through the binding carrier plate according to FIG. 2 along the line III-III,

FIG. 4 shows a transparent top view of a binding carrier plate with rectangular, interconnected tension members,

FIG. 5 shows a cross section through the binding carrier plate according to FIG. 4 along the line V-V,

FIG. 6 shows a transparent top view of a binding carrier plate with tension members consisting of individual strips,

FIG. 7 shows a cross section through a binding support plate with tension members drawn in from the outside and formed by a rope or a wire,

FIG. 8 shows a cross section through an embodiment of a binding carrier plate with an elastically mounted guide element designed as a longitudinal rib,

FIG. 9 shows a cross section through a binding carrier plate with a non-resiliently mounted guide element formed by a rib,

FIG. 10 shows a cross section through a binding carrier plate with a prism-shaped, elastically mounted guide element and

Figure 1 1 is a side view of a binding support plate with a three-part base plate. The binding carrier plate 1 shown in FIG. 1 is exemplary of all further exemplary embodiments shown only in part or in a sectional view. It consists of a base plate 2, a support plate 3 and an intermediate plate 4 arranged between the base plate 2 and the support plate 3. The base plate 2 is fastened at its ends to a ski 6 by means of a screw connection 5.1 and an elongated screw connection 5.2. The carrier plate 3 and the intermediate plate 4 are shorter than the base plate 2 and at their front ends each surrounded by a bump 7 formed by the base plate 2 and thereby held in the longitudinal direction on the base plate 2. A gap is provided between the bumps 7 and the carrier plate 3, which gap is filled with a rubber-elastic material. The base plate 2 and the carrier plate 3 consist of a solid plastic which can be fiber-reinforced to increase the strength. Instead of plastic, a light metal can be used to manufacture the plates. The intermediate plate 4 is made of an elastomeric material, e.g. B. rubber, a thermoplastic polyester elastomer or the like. The ski binding, not shown, is fastened to the carrier plate 3, which is provided with a series of threaded holes for this purpose.

In the embodiment of the binding carrier plate shown in FIGS. 2 and 3, the base plate 2 is connected to the carrier plate 3 by two groups of tension members 8, 9, which are arranged crosswise to one another. Each group of tension members 8 and 9 is formed by a rope running in a substantially diagonal plane of the binding support plate, so that two adjacent tension members 8 and 9 at one end by a connecting piece 10, 12 and 11, 13 with each other are connected. The connecting pieces 10 between the tension members 8 and the connecting pieces 11 between the tension members 9 run inside the base plate 2. The connecting pieces 12 of the tension members 8 and the connecting pieces 13 of the tension members 9 run inside the carrier plate 3.

The contact surface 14 of the base plate 2 facing the intermediate plate 4 has a convex-cylindrical shape and that of the contact plate 4 facing the intermediate plate 4

1 5 of the carrier plate 3 has a concave-cylindrical shape, the axis of curvature lying in each case in the longitudinal center plane common to the two plates. According to the shape of the contact surfaces 14, 15, the intermediate plate 4 is also cylindrically curved.

The mode of operation of the binding carrier plate is explained below on the basis of the illustration in FIG. 3. Is the binding carrier plate 1 when bending the ski by an angle a by a pair of forces? 2 loaded, the intermediate plate 4 is thereby elastically deformed and the carrier plate 3 moves to the left into the position shown in broken lines. The extent of this displacement and the deformation of the intermediate plate 4 is determined here by the tension members 8, which absorb a considerable part of the forces introduced and influence and limit the relative movement between the carrier plate 3 and the base plate 2 by their pivoting radius. The lateral displacement of the carrier plate 3 causes the force application via the shoe to be displaced in the direction of the running edge of the ski and thereby ensures better edge pressure and an improvement in the driving properties in the manner described at the outset. The tension members 9 are completely relieved in this process and somewhat compressed in the axial direction. The flexibility of the material used allows this without further ado.

The exemplary embodiment of the binding carrier plate 1 shown in FIGS. 4 and 5 corresponds in its basic structure and its mode of operation to the exemplary embodiment according to FIGS. 2 and 3. The two groups of tension members 8, 9 are here formed by preformed, braided or woven bands of high-strength fibers or threads are formed, which in turn are connected to one another by connecting pieces 10 to 1 3. The exemplary embodiment further shows that the contact surfaces 14, 15 can also be flat, as a result of which the shear stress on the intermediate plate 4 is reduced and the pressure stress is increased when folding.

FIG. 6 shows a variant of the binding carrier plate 1, in which the tension members 8, 9 consist of individual strips arranged at a distance from one another.

In the exemplary embodiments according to FIGS. 2 to 6, the base plate

2, the intermediate plate 4 and the carrier plate 3 are produced by casting or injection molding. Here, the tension members 8, 9 are inserted with their connecting pieces 10 to 13 in the intended position in the mold and with the Pour over the board material. This can be done, for example, in such a way that the space between the base plate 2 and the support plate 3 to be filled by the intermediate plate 4 is designed as a wall of a casting mold that can be divided on the tension members 8, 9 for producing the base plate 2 and the support plate 3. After these two plates have been cast, this intermediate space can then be filled with the elastomeric material of the intermediate plate.

In contrast, the exemplary embodiment shown in FIG. 7 is intended for mounting the tension members 8, 9 following the manufacture of the base plate 2 and the carrier plate 3. For this purpose, the base plate 2 and the carrier plate 3 have through bores 1 6 or slots through which the tension members 8, 9 can be inserted or pulled from the outside inwards. The tension members 8, 9 can be mounted on the one hand before the intermediate space between the contact surfaces 14, 15 is poured out with the elastomeric material of the intermediate plate 4. On the other hand, the tension members 8, 9 can also be mounted after the mounting of the intermediate plate 4 between the base plate 2 and the support plate 3 by drilling through the elastomeric material of the intermediate plate 4 before mounting the tension members 8, 9 or piercing during assembly. If the tension members 8, 9 are mounted after the assembly of the intermediate plate 4, there is also the possibility of generating a defined compressive prestress of the intermediate plate 4 by appropriately tensioning the tension members 8, 9. In order to protect the fastening ends of the tension members 8, 9 and the connecting pieces 10 to 13, longitudinal grooves 17 are provided on the outside of the base plate 2 and the carrier plate 3, in which the bores 16 open.

In the embodiment of the binding carrier plate 1 shown in FIG. 8, the base plate 2 has in its contact surface 14 a central longitudinal groove 18 into which a rib 19 protruding from the contact surface 15 of the carrier plate 3 projects with its free end. Between the walls of the longitudinal groove 18 and the rib 19 there is an intermediate space 20 which is filled with the elastomeric material of the intermediate plate 4. This forms an elastic joint which prevents a parallel displacement of the carrier plate 3 with respect to the base plate 2 and also a rotation of the carrier plate 3 with respect to the base plate 2 about a vertical axis, but at the same time permits a lateral pivoting movement of the carrier plate 3 with respect to the base plate 2 if the carrier plate 3 is loaded with a force inclined to the plane of the plate, as when folding the ski, and the intermediate plate 4 is compressed accordingly on one side. The dash-dotted line illustrates this state of deformation, which leads to a shift in the position of the binding and boot relative to the ski, which improves the driving properties.

Figure 9 shows a modification of the embodiment of Figure 8, in which the joint is formed by a thickening 21 in the form of a bead with cylindrical outer surfaces at the free end of the rib 19 and parallel wall surfaces of the longitudinal groove 18 against which the cylindrical outer surfaces abut. The intermediate plate 4 consists of two parts which are arranged on both sides of the rib 19.

In the exemplary embodiment shown in FIG. 10, the rib 19 has the shape of a triangular prism, the base of which lies in the plane of the contact surface 15 and which forms an integral component with the carrier plate 3. With its free edge, the prism projects into a V-shaped longitudinal groove 18 in the base plate 2, a space 20 remaining between the prism and the walls of the groove, which, as in the exemplary embodiment according to FIG. 8, is filled with the elastomeric material of the intermediate plate 4 is. This embodiment has the advantage that the prismatic shape of the rib 19 gives the support plate 3 a high degree of rigidity, so that the base plate 2 can be made softer in order to have less influence on the bending behavior of the ski. The deformation behavior with the ski turned over is again illustrated by a broken line.

Figure 1 1 shows a binding carrier plate 101, in which the base plate 2 consists of three successive plate parts 2a, 2b, 2c, each separated by a gap 22 filled with the elastomeric material of the intermediate plate 4. For their attachment to the ski, the plate parts 2a, 2b, 2c have fastening holes 23 which are accessible from above through holes 24 in the carrier plate 3 and the intermediate plate 4. The plate parts 2a, 2b, 2c are connected to the carrier plate 3 by the intermediate plate 4 and by tension members 8, 9 in accordance with the exemplary embodiment according to FIG. 6 and thereby also to one another. As a result of this connection via the carrier plate 3, the flap parts 2a, 2b, 2c can be moved relative to one another to a limited extent, particularly in the longitudinal direction and in the bending direction of the ski, the movements being compensated for by elastic deformations of the intermediate plate 4. The flap parts 2a, 2b, 2c can therefore follow the respective deflection of the ski, so that the bending behavior of the ski is practically not changed by the binding carrier plate 101. However, the overall deformability of the intermediate plate 4 in the longitudinal direction of the ski is so low that the required positional stability of the carrier plate with binding and boot is given.

Claims

claims

1 . Binding support plate composed of several elements for a ski, with a base plate facing the upper side of the ski and attachable thereon and a support plate arranged between the base plate and the binding or the shoe sole, on which the binding can be fastened, characterized in that between the base plate (2) and the carrier plate (3) an intermediate plate (4) made of an elastomeric material is arranged by the between the ski (6) and the

The forces occurring during skiing when skiing are elastically deformable such that the support plate (3) can be moved transversely to the longitudinal direction of the ski (6) by deformation of the intermediate plate (4) relative to the base plate (2) and can be supported on the base plate (2) via guide elements, which limit the movement of the carrier plate (3) transversely to the longitudinal direction of the ski (6) to a variable dimension dependent on the elastic deformation of the intermediate plate (4).

2. Binding support plate according to claim 1, characterized in that the guide elements consist of two groups of tension members (8, 9), which

Pass through the intermediate plate (4) and are anchored at one end to the base plate (2) and at the other end to the support plate (3), the tension members (8, 9) of one group showing the left side of the base plate ( 2) connect the right side of the base plate (3) and the tension members (8, 9) of the other group connect the right side of the base plate (2) with the left side of the base plate (3).

3. Binding carrier plate according to claim 2, characterized in that the tension members (8, 9) consist of individual strips, tapes or leaflets, the ends of which are anchored in the base plate (2) or in the carrier plate (3).

4. Binding support plate according to one of claims 2 or 3, characterized in that a plurality of tension members (8, 9) consist of a continuous band, strip, rope, wire or the like.

5. binding carrier plate according to one of claims 2 to 4, characterized in that the tension members (8, 9) (8, 9) made of a braided, woven or twisted, high-strength fiber material, e.g. made of carbon fibers, glass fibers, plastic fibers or metal threads.

6. binding carrier plate according to one of claims 2 to 5, characterized in that the ends of the tension members (8, 9) in the base plate (2) or the carrier plate (3) are cast.

7. binding carrier plate according to one of claims 2 to 5, characterized in that the ends of the tension members (8, 9) in the intermediate plate (4) open grooves in the base plate (2) or in the carrier plate (3) are inserted and that the grooves for fixing the ends of the tension members (8, 9) are cast with a suitable material, for example the material of the intermediate plate (4),

8. Binding support plate according to one of claims 2 to 5, characterized in that the base plate (2) and the support plate (3) have through holes (16) through which the tension members (8, 9) are passed, the protruding from the holes Ends of the tension members (8, 9) are fixed to the respective plate.

9. binding carrier plate according to claim 8, characterized in that a band, strip, rope or wire to form the tension members (8, 9) in a meandering course through the through holes (16) is passed.

10. Binding carrier plate according to one of claims 8 or 9, characterized in that on the outside of the base plate (2) or the carrier plate (3) longitudinal grooves (17) are provided, in which the through holes

(16) open.

1 1. Binding carrier plate according to one of claims 2 to 10, characterized in that the tension members (8, 9) consist of a rigid element and the ends of the tension members (8, 9) are fastened such that only tensile forces are transmitted.

1 2. Binding carrier plate according to claim 1, characterized in that the carrier plate (3) on its the intermediate plate (4) facing the underside formed by a pin, a rib (1 9) or the like. Rigidly connected to the carrier plate (3) Has guide element which projects with its free end into a recess (18) in the base plate (2), in which it can be moved perpendicular to the plane of the plate and pivoted about a central axis running in the longitudinal direction of the plate.

1 3. Binding support plate according to claim 12, characterized in that the free end of the guide element has an almost play-free on parallel side walls of the recess in the base plate (2) thickened with spherical, cylindrical or knife-shaped contact surfaces.

14. Binding support plate according to one of claims 1 or 12, characterized in that a space is provided on all sides between the walls of the recess in the base plate (2) and the free end of the guide element, which with an elastomeric material, in particular the material of the Intermediate plate (4) is filled.

1 5. Binding support plate according to one of claims 1 or 1 2 to 14, characterized in that the guide element has the shape of a cone or a triangular prism which protrudes with its tip or edge into an analogously shaped recess in the base plate (2).

1 6. Binding carrier plate according to one of the preceding claims, characterized in that fixed stops are provided on the base plate (2), on which the carrier plate (3) or the guide element can be supported.

1 7. binding carrier plate according to one of the preceding claims, characterized in that the individual plates of the binding carrier plate have a rectangular cross section.

1 8. binding carrier plate one of the preceding claims, characterized in that the intermediate plate (4) facing contact surfaces on the

Base plate (2) and the carrier plate (3) ver in the longitudinal direction of the plate running axis are curved, the contact surface of the base plate (2) being convex and the contact surface of the carrier plate (3) being concave.

9. Binding support plate according to one of the preceding claims, characterized in that the base plate (2) consists of a plurality of parts lying one behind the other in the longitudinal direction and relatively movable.