CROSS-COUNTRY SKIING KIT WITH A CROSS-COUNTRY SKI BINDING AND WITH A CROSS-COUNTRY SKI BOOT

Abstract

A cross-country skiing kit with a cross-country ski binding and with a cross-country ski boot, wherein the crosscountry ski binding, for articulated connection of a cross-country ski boot to a cross-country ski, is provided with a substantially unyielding binding main body which has a stand surface for a sole of the cross-country ski boot, with a holder device which has a seat for pivotable arrangement of the cross-country ski boot about a pivot axis extending in the transverse direction of the binding main body, with an elastically deformable resetting element for resetting the cross-country ski boot from an upwardly pivoted position in the direction of the stand surface of the binding main body, wherein at least one substantially unyielding elevation is provided on the stand surface of the binding main body, to the rear of the pivot axis in the longitudinal direction of the binding main body, with which elevation the sole of the cross-country ski boot in its unloaded state is arranged at a distance from the stand surface of the binding main body.

Claims

1. A cross country skiing kit comprising a cross-country ski binding and a cross-country ski boot, wherein the cross-country ski binding comprises an articulated connection of a cross-country ski boot to a cross-country ski comprising, an unyielding binding base body, which comprises a standing surface for a sole of the cross-country ski boot, a holding device, which comprises a receptacle for pivotable arrangement of a pivot pin of the cross-country ski boot about a pivot axis extending in a transverse direction of the binding base body, an elastically deformable reset element for resetting the cross-country ski boot from an upwardly pivoted position in the direction of the standing surface of the binding base body, wherein the reset element is arranged on the cross-country ski binding, at least one unyielding elevation on the standing surface of the binding base body behind the pivot axis in a longitudinal direction of the binding base body, wherein with the unyielding elevation, the sole of the cross-country ski boot is arranged in an unloaded state at a distance from the standing surface of the binding base body, wherein the cross-country ski boot in the unloaded state approaches at most an angle other than zero to the standing surface of the binding base body.

2. The cross country skiing kit according to claim 1, wherein the elevation is formed on the standing surface as one piece with the binding base body.

3. The cross country skiing kit according to claim 1, wherein the elevation on the standing surface of the binding base body is manufactured from a hard plastic material.

4. The cross country skiing kit according to claim 1, wherein the elevation is provided on a first lateral edge region of the standing surface of the binding base body.

5. The cross country skiing kit according to claim 4, wherein a second elevation is provided on a second lateral edge region of the standing surface, wherein the second lateral edge region is opposite the first lateral edge regions of the standing surface of the binding base body.

6. The cross country skiing kit according claim 1 to 5, wherein the elevation on the standing surface comprises a front area ascending in the longitudinal direction of the binding base body, a rear area descending in the longitudinal direction of the binding base body, and an apex area between the front area and the rear area.

7. The cross country skiing kit according to claim 6, wherein the apex area is spaced in a longitudinal distance of 3 mm to 9 mm apart from the pivot axis of the holding device.

8. The cross country skiing kit according to claim 6, wherein the elevation on the standing surface is curved in an arc shape, in the longitudinal cross section.

9. The cross country skiing kit according to claim 6, wherein the elevation comprises a flat contact surface in the front area, arranged at an obtuse angle to a contacting front section of the standing surface of the binding base body, wherein the elevation comprises a flat flank in the rear area arranged at an obtuse angle to a contacting rear section of the standing surface of the binding base body.

10. The cross country skiing kit according claim 1, wherein the elevation comprises a maximum extension perpendicular to the primary plane of the standing surface of the binding base body of 0.5 mm to 2.5 mm.

11. The cross country skiing kit according claim 1, wherein the cross-country ski binding is mounted on a cross-country ski.

12. The cross country skiing kit according claim 1, wherein the elevation comprises a maximum extension perpendicular to the primary plane of the standing surface of the binding base body of 1.5 mm.

13. The cross country skiing kit according to claim 6, wherein the apex area is spaced in a longitudinal distance of 6 mm apart from the pivot axis of the holding device.

14. The cross country skiing kit according to claim 3, wherein the hard plastic material is acrylonitrile butadiene styrene copolymers (ABS), polyamide, p polyoxymethylene (POM) or metal.

15. The cross country skiing kit of claim 14, wherein the metal is aluminum.

Description

[0026] The invention is subsequently explained in greater detail by way of preferred exemplary embodiments; however, it is not limited to them.

[0027] FIG. 1 schematically shows a section of a cross-country ski with a cross-country binding according to the invention, which comprises a yielding reset element in front of the pivot axis and an unyielding elevation behind the pivot axis for holding up the cross-country boot (see FIG. 2).

[0028] FIG. 2 shows the cross-country boot on the cross-country binding of FIG. 1 in the unloaded state shortly before the introduction of the gliding phase, wherein the cross-country boot is arranged by the elevation on the binding base body in a tilted position at a distance from the standing surface.

[0029] FIG. 3 shows a top view on the cross-country binding according to FIGS. 1, 2.

[0030] FIG. 4 shows a longitudinal edge of the cross-country binding in another embodiment according to the invention in which the elevation on the standing surface is formed as a segment of a cylinder.

[0031] FIG. 5 shows a longitudinal edge of the cross-country binding in another embodiment according to the invention in which the elevation on the standing surface is formed as a type of pitched roof

[0032] A cross-country binding 1 for pivotable connection of a cross-country boot 2 to a cross-country ski 3 is shown in FIG. 1. Such cross-country ski kits have been known in the prior art for a long time, such that in the following only the features essential for the invention shall be described.

[0033] Cross-country binding 1 comprises a binding base body 4, formed from an essentially unyielding (i.e., non-elastic) material, which comprises a guide rail 21 in a central area. On the upper side, binding base body 4 comprises a standing surface 5 for placing a sole 6 of the cross-country boot 2 (see FIG. 2). On the underside, binding base body 4 comprises an essential flat ski standing surface 22, which is mounted in the embodiment shown directly on cross-country ski 3. However, additional, in particular plate-shaped mounting elements (not shown) may be provided between binding base body 4 and cross-country ski 3. In this case, ski standing surface 22 is connected indirectly to cross-country ski 3. In addition, cross-country binding 1, as likewise known for a long time, comprises a holding device 7 for detachable connection to cross-country boot 2. Holding device 7 comprises a receptacle 8 for pivotable arrangement of a pivot pin 9 of cross-country boot 2 about a pivot axis 10 (see FIG. 3), which extends in the transverse direction of binding base body 4 (or in the transverse direction of cross-country ski 3). For this purpose, holding device 7 comprises two displaceably or pivotably mounted hooks 11, which hold pivot pin 9 on receptacle 8 in the connected state. To release cross-country boot 2, holding device 7 additionally comprises a handle 12, which is formed by a rotating handle in the embodiment shown. By rotating the rotating handle, hooks 11 may be pivoted between a release and a holding position.

[0034] In addition, cross-country binding 1 comprises a reset element 13, which is designated multiple times in the prior art as a flexor. Reset element 13 comprises an elastically deformable (rubber) material to press cross-country boot 2 from an upwardly pivoted position after the push-off (not shown) in the direction of standing surface 5 of binding base body 4.

[0035] In the embodiment shown, cross-country binding 1 additionally comprises at least one elevation 14, which projects from standing surface 5 of binding base body 4 and is located behind pivot axis 10 of holding device 7 when viewed in longitudinal direction 4a of binding base body 4 from its front end to its rear end. In the embodiment shown, elevation 14 is arranged completely behind pivot axis 10, when viewed in longitudinal direction 4a; however, it may suffice if elevation 14 starts in front of pivot axis 10 but reaches the maximum height (vertical extension) behind pivot axis 10.

[0036] In contrast to reset element 13, elevation 14 is designed as essentially unyielding so that the underside of sole 6 of cross-country boot 2 is arranged, in the unloaded state before a weight transfer to a heel area of cross-country boot 2, at a distance from standing surface 5 of binding base body 4. When loading cross-country binding 1 with the weight of the skier, sole 6 of cross-country boot 2 is brought into full surface contact (aside from the interstices of the sole profile naturally) with standing surface 5 of binding base body 4 under elastic deformation in the area of elevation 14. This embodiment facilitates a reduction of the oscillating movement of cross-country ski 3 with respect to cross-country boot 2 when lifting cross-country ski 3, in that an angle a of, for example, 8° to 13° is not exceeded between the underside of the sole of cross-country boot 2 and standing surface 5. This is achieved in that sole 6 is mechanically clamped between elevation 14 (for example, lens shaped in the top view) and pivot axis 10. Sole 6 is slightly elevated by elevation 14 so that sole 6 is pressed in its front area against elastically deformable reset element 13, by which means an elastic reaction force is generated in reset element 13.

[0037] In the embodiment shown, elevation 14 is formed as one piece with binding base body 4. Binding base body 4 is hereby preferably formed from a hard plastic material, in particular from acrylonitrile butadiene styrene copolymers (ABS), polyamide, preferably fiber reinforced polyamide, or from polyoxymethylene (POM) or from a metal, in particular from aluminum.

[0038] As is clear in the embodiment shown in FIG. 3, two identical elevations 14 are provided which are arranged on opposite lateral edge regions 15 of binding base body 4. Due to this double-sided arrangement of elevations 14, an increased torsional stability is achieved, as the forces are built up on both sides, namely in the direction of dashed-dotted lines 23.

[0039] As is clear from FIGS. 1, 2, elevation 14 on standing surface 5 comprises a front area 16 ascending in the longitudinal direction of binding base body 4, a rear area 17 descending toward the back in the longitudinal direction of binding base body 4, and an apex area 18 between front area 16 and rear area 17. Apex area 18 comprises the maximum vertical extension with respect to sections 19, 20 of standing surface 5 contacting elevation 14.

[0040] Apex area 18 is preferably located in a longitudinal spacing b from pivot axis 10 of holding device 7 (see FIG. 2) of 3 mm to 9 mm, in particular from 5 mm to 7 mm, preferably essentially 6 mm. Elevation 14 hereby preferably comprises a maximum extension c perpendicular to the main plane of standing surface 5 of binding base body 4, i.e., a height of 0.5 mm to 2.5 mm, preferably from 1 mm to 2 mm, in particular essentially 1.5 mm (see FIG. 4). It follows that the height of elevation 14 is depicted as exaggerated in the drawings.

[0041] Elevation 14 may have different geometries, as are illustrated by way of FIGS. 1 to 5.

[0042] According to FIGS. 1, 2, elevation 14 is essentially flat in front area 16, wherein front area 16 is arranged at an obtuse angle to a contacting front section 19 of standing surface 5 of binding base body 4. Rear area 17 of elevation 14 is likewise essentially flat, wherein rear area 17 is arranged at an obtuse angle to a contacting rear section 20 of standing surface 5 of binding base body 4. Front area 16 is steeper with respect to ski contacting surface 22 than rear area 17 of elevation 14. Apex area 18 between front area 16 and rear area 17 is curved in an arc shape in the longitudinal cross section, i.e., in the cross section perpendicular to pivot axis 10.

[0043] According to FIG. 4, elevation 14 a standing surface 5 is curved in an arc shape, in particular a circular arc shape in the longitudinal cross section (i.e., in the cross section perpendicular to pivot axis 10). Thus, elevation 14 is formed as a segment of a cylinder.

[0044] According to FIG. 5, front area 16 and rear area 17 are each formed as essentially flat, wherein front area 16 and rear area 17 are arranged in essentially the same obtuse angle to front section 19 of the standing surface or to rear section 20 of standing surface 5 on both sides of elevation 14.