EP1297869B1 - Snow glider, especially a ski - Google Patents

Abstract

Sliding board for use on snow, especially as a ski (1), comprises a sliding board body whose width can be altered by an expanding device (9) over at least part of its length. The expanding device expands the sliding board body as a function of the load or bending of the sliding board. <??>An Independent claim is also included for an expanding device for the above sliding board. Preferred Features: The expandable section is provided on the rear end (4) of the board body.

Description

The invention relates to a snow sliding board according to the preamble of claim 1.

Snow gliding boards and especially as skis are known in various designs. It is also known to provide a ski over a partial length with an outgoing from the rear end of the ski slot, in the area of the ski is then spreadable by means of a spreader device provided there in width so as to u. a. to change the course of the side edges (sidecut) or their curvature so that with increasing spread results in an increasing curvature or sidecut of the ski on its longitudinal sides. The spreading device is formed in the known case of two bearing elements fastened on both sides by the slot on the upper side of the ski body and a set screw running transversely to the slot, which is guided in a thread of a bearing element and is supported in the other bearing element. By turning the screw in one direction is thus an increasing spreading against the inherent elasticity of the ski body. By turning the screw in the other direction a reduction of the spread is possible by relieving the ski body.

Also known is a ski (FR 2 794 374), which is expandable to change its outer contour and for this purpose has at least one over a partial length of the ski extending slot with a spreading device, the expansion element is for example wedge-shaped. In one embodiment of this known ski, the expansion element is actuated via an actuating device and a coupling member, in dependence on the inclination of a ski boot shank. The coupling member is held for this purpose on the ski boot shaft.

It is also known (DE 84 22 316.2 U1) to provide screws or threaded pieces as expansion element.

Object of the present invention is to show a snow sliding, which is characterized by improved, dynamic driving characteristics. To solve this problem, a snow sliding board is designed according to claim 1.

In the snow gliding board according to the invention, a control of the spread, and thus the outer contour (indentation) of the gliding board body, which is dependent on the respective deflection of the snow gliding board, takes place. a dynamic spreading.

The dynamic or progressive spreading of the Schneegleitbretts and thus the dynamic deformation of the outer contour (retraction) of Schneegleitbretts done in the invention thus by the difference in length of the bending line of Schneegleitbretts and a staggered bending line or a route, such as an adapter or other control, which also may be integral part of the Schneegleitbretts or is mounted on this. As an adapter or control, for example u.a. Elements which are guided on the snow sliding board in guides and fixed to an area on Schneegleitbrett and act on a further, offset in the longitudinal direction of the Schneegleitbretten area drivingly on the spreading device or a spreading element of this device.

Fig. 1

und 2 in sehr vereinfachter Darstellung einen Ski in Seitenansicht im entspannten Zustand (Figur 1) und im gespannten Zustand (Figur 2);

Fig. 3

in Teildarstellung eine Draufsicht auf ein hinteres Ende des Skis der Figuren 1 und 2, zusammen mit einer möglichen Ausführungsform einer im Skikörper vorgesehenen Spreizvorrichtung;

Fig. 4

eine Darstellung ähnlich Figur 3, jedoch bei demontierter Spreizvorrichtung;

Fig. 5 - 8

Elemente der Spreizvorrichtung in Einzeldarstellung und in Draufsicht;

Fig. 9

in vereinfachter Darstellung einen Querschnitt durch einen Ski der Figuren 1 - 4 entsprechend der Linie I - I der Figur 3;

Fig. 10

in vereinfachter Darstellung einen Querschnitt durch einen Ski bei einer weiteren Ausführungsform der Erfindung.

Further developments of the invention are the subject of the dependent claims. The invention will be explained in more detail below with reference to the figures of an embodiment.
Show it:

Fig. 1

and FIG. 2 shows in a very simplified representation a ski in side view in the relaxed state (FIG. 1) and in the tensioned state (FIG. 2);

Fig. 3

in a partial view, a plan view of a rear end of the ski of Figures 1 and 2, together with a possible embodiment of a provided in the ski body spreader;

Fig. 4

a representation similar to Figure 3, but with disassembled spreading device;

Fig. 5-8

Elements of the spreading device in individual representation and in plan view;

Fig. 9

in a simplified representation of a cross section through a ski of Figures 1 - 4 according to the line I - I of Figure 3;

Fig. 10

in a simplified representation of a cross section through a ski in a further embodiment of the invention.

In FIGS. 1-9, 1 generally designates a ski (alpine ski) whose ski body 2 is manufactured using the usual ski-boot materials and technologies. In the middle of the ski, d. H. between the front, the blade-forming end of the ski 3 and the rear end of the ski 4 a binding plate 5 is fixed on the upper side of the ski body 2, for example by means of a system (eg rail system), which is a stationary or substantially fixed one Ensures the position of the binding plate 5 between the two ends 3 and 4, but at the same time ensures a uniform bending line of the ski body 2 when loading, for example when driving through depressions in the field, even in the binding plate 5. Such fastening systems are known to the person skilled in the art. On the binding plate 5, the front and rear binding element are fastened, which are indicated schematically in Figures 1 and 2 with 6 and 7.

As particularly shown in FIGS. 3 and 4, the ski body 2 is slotted in a region 2 'which extends in the longitudinal direction of the body L from the end 4 in the direction of the binding plate 5 but ends at a distance from this binding plate, in the form of a wedge, ie. H. provided with an open towards this end 4 recess 8 which is formed coaxially with the longitudinal axis L of the ski body 2 and in the illustrated embodiment, starting from its open at the end 4 side towards the center of the ski body or binding plate 5 towards wedge-shaped. The recess 8 forms edges 8 'and at its closed end a circular extension 8 ", whose diameter is greater than the distance that the edges 8' at the transition to the extension 8 'from each other.

In the recess 8, a spreading device 9 is arranged, with which the ski body 2 in its portion 2 'and with the formed on both sides of the recess 8 Edge regions 10 can be spread against the inherent elasticity of the material of the ski body 2 or the edge regions 10 in the ski body transverse direction, as indicated in the figure 3 with the arrows A.

By this spreading the course of the steel edges having longitudinal sides or edge lines 11 (sidecut) of the ski body 2 is variable, between a "normal" course or a normal curvature, the edge lines 11 at not spread ski body portion 2 ', and gradients, in which with more or less spread ski body portion 2 'the edge lines 11 and thus the outer contour (indentation) have a course with a greater curvature. The structure of this spreading device 9 will be described in more detail below.

Via a control or coupling connection 12, which is formed in the illustrated embodiment substantially of a, preferably adjustable in length rod 13, the spreading device 9 is connected to the rear end of the binding plate 5, via a ball joint 14 on the binding plate 5 and a ball joint 15 on the spreading device 9. The rod 13 is located in a longitudinal axis L enclosing the center plane of the ski body 2 at a distance above the top of the ski body, so that when bending the ski body 2 from the state shown in Figure 1 in the in Figure 2 reproduced state via the control connection 12, a movement is exerted on the connected to the spreader 9 ball joint 15, in accordance with the arrow B in the direction of the ski end 4 out. In this way, depending on the degree of deflection of the ski body 2, a control of the spreading device 9 and thus in the illustrated embodiment an increasing with the degree of deflection of the ski 1 and the ski body 2 spreading the Skikörperabschnittes 2 'and increasing curvature of the edge lines 11th ,

The spreading device 9 and its functional elements are shown in more detail in Figures 3 - 9. The spreading device 9 consists in the illustrated embodiment of a frame member 16, which is substantially ironing or is formed bracket-like, with two substantially rectilinear legs or frame portions 17 which are connected to each other via a rounded frame portion 18 at one end. The frame member 16 is integrally made of a material having sufficient elasticity and strength, for example made of plastic.

The frame portions 17 and 18 are in cross section, for example, Z-shaped designed so that they cover the ski body 2 at least on the edge 8 'of the recess 8 and along the edge 8' also on the top and recess 8 to a gap 19 and the ski base Close.

The round frame section 18 is received by the extension 8 "of the recess 8. The frame sections 17 and 18 form an approximately Z-shaped profile in cross-section, as shown in Figure 9 for the frame sections 17, with the latter against the top the ski body 2 adjacent leg 17 ', with the adjoining, the edge 8' covering leg 17 "and with the adjoining, parallel to the underside 20 of the ski body extending leg 17 ''.

The frame portions 17 form between their legs 17 '"the slot 19, which is closed by a plate 17 resting on the leg 17''. The plate 21 is part of a spreading element 22 which is slidably provided in the direction of the longitudinal axis L by a predetermined Spreizhub SH in the space formed by the legs 17 "and 17"'. The expansion element 22 also includes an attached to the plate 21 Spreizhebelanordnung 23 with a connecting piece 24 which is connected to the plate 21 and lies with its longitudinal extent in the longitudinal axis L, and a plurality of expansion levers 25 has. These are hinged with an inner end on the connecting element 24 via film hinges and are on both sides of the connecting element 24 and the Spreizelementes 22 away.

Each spreading lever 25 is articulated with its free end to a frame portion 17, so that when moving the spreader 22 a spreading apart of the frame portions 17 and thus the spreading of the edge portions 10 of the ski body 2 takes place. The expansion element 22, which is covered at the top of the ski by a cover plate 26, has at its binding plate 5 closer to the end of a coupling portion which is generally denoted by 27 in the figures and to which the ball joint 15 is attached.

The expansion levers 25 each form Spreizhebelpaare with two expansion levers 25, each of which projects beyond a longitudinal side of the expansion element 22. In the non-spread state, the expansion lever 25 of each Spreizhebelpaares form with its longitudinal axis an angle smaller than 180 °, which opens to the free ends of the frame portions 17 toward. In the frame portion 17 is rotatable about an axis perpendicular to the ski base 20 a knob 28 with an eccentric control surface 28 'is provided which cooperates with the frame portion 18 adjacent end 29 of the spreader 22, in such a way that when remote control connection 12 by turning the knob 28 and 22 different spreading conditions of the ski body portion 2 'can be adjusted by moving the spreader, so in contrast to the above-described dynamic, ie From the deflection of the ski body 2 dependent spreading a static spread is achieved.

By varying the design of the expansion lever 25, for example by different angular position and / or length of these levers, the characteristic of the spreading of the ski or the deformation of the ski outer contour (indentation) can be influenced.

FIG. 10 shows in a very simplified illustration and in section a ski 1a whose ski body 2a is in turn slit in a ski body portion starting from the rear end in the direction of the binding area or a binding plate there, with a slit 30 at the top of the ski Skikörpers 2a in a trough-like, extending in the longitudinal direction of the ski body recess 31 passes with a greater width. At the two edges 30 ', the slot 30 is provided in each case with a groove 32 open towards this edge, which extends in the longitudinal direction of the ski body 2a at least over a partial length of the slot 30. In the slot 30 and in the groove-shaped recesses 32 engages a wedge formed or acting spreading element 33, which is part of the spreading device 9a and in the longitudinal direction of the ski body 2a by a certain amount is displaceable. On the expansion element 33, the ball joint 15 is provided for the control connection 12, with which the expansion element 33 is in turn connected to the binding plate 5. The slot 30 with the grooves 32 is wedge-shaped in at least one subregion. In principle, there is also the possibility that the slot 30 is rectilinear and the grooves 32 are wedge-shaped in at least one subregion.

The invention has been described above by means of exemplary embodiments. It is understood that numerous other changes and modifications are possible without thereby departing from the inventive idea underlying the invention.

Thus, it was assumed above that in the dynamic control of the course of the edge lines 11 ski body 3, the spreading device 9 or 9a is controlled via a rod having a control connection 12. Of course, other connections are conceivable. Furthermore, it was assumed above that the control of the spreading device 9 or 9a takes place via the binding plate 5. Of course, it is also possible to produce the control connection 12 to the respective spreading device 9 or 9a with a binding element, for example with the binding element 7.

In the above, it was further assumed that with increasing deflection of the ski body 2 or 2a, an increasing spreading of the expandable ski body portion 2 'takes place. Of course, with a corresponding design of the spreading device, other spreading characteristics are conceivable, for example vice versa a maximum spreading with relieved ski and a decrease of the spreading with increasing load of the ski.

It has been assumed above that the control of the respective spreading device 9 or 9a takes place via a coupling or control connection, namely by the difference in length between the length of the coupling rod 13 and the bending line of the ski 1 or 1a during bending. Of course, other measures are conceivable that cause the dynamic control of the respective spreading device due to the difference in length between the bending line of the ski and a relative to this bending line radially offset further bending line or route. In particular, it is also possible to provide at least one adapter or control element offset relative to the bending line of the ski, which is fixed to an area on the ski body and movably guided in driving directions in the longitudinal direction of the ski at least at another area offset in the longitudinal direction of the ski is connected to the expansion element of the respective spreading device. The adapter or control element is provided, for example, as part of a binding plate or outside the binding attachment region so that, in principle, any binding can be mounted on the ski without the need for adaptation between binding and spreading device. In the above description of possible embodiments of the invention, it was assumed that the respective ski 1 or 1a is slotted in the rear region over a partial length. Of course, it is also possible to slit the ski body instead of or in addition thereto in a front area and to provide there at least one spreading device, or to slit the ski body over its entire or nearly entire length and to provide in the region of this slot with at least one spreading device ,

LIST OF REFERENCE NUMBERS

1, 1a

ski

2, 2a

ski body

2 '

expandable ski body section

3, 4

ski body

5

binding plate

6, 7

binding element

8th

Slot or recess in the ski body

8th'

edge

8th"

renewal

9, 9a

spreading

10

border area

11

Borderline (sidecut)

12

control connection

13

coupling rod

14, 15

ball joint

16

frame element

17.18

frame section

17 ', 17 ", 17"'

leg

19

slot

20

ski base

21

plate

22

spreader

23

lever member

24

joint

25

spreading lever

26

end plate

27

coupling portion

28

knob

28 '

cam

29

The End

30

slot

31

deepening

32

groove

33

spreader

A

spreading

B

control movement

L

longitudinal axis

SH

Spreizhub

Claims (14)

1. Snow sliding board, in particular ski, with a sliding board body (2, 2a) which can be varied in its width by spreading by a spreading device at least on a spreadable portion (2') formed by a part length (2') of the sliding board body (2, 2a), characterized in that the spreading device (9, 9a) brings about the spreading of the sliding board body (2, 2a) depending on the deflection of the snow sliding board.
2. Snow sliding board according to Claim 1, characterized in that a control or an adapter, which actuates the spreading device (9, 9a) or a spreading element (22) of the spreading device (9) on account of a length difference between the bending line of the sliding board body (2, 2a) during bending and a section offset radially in relation to this bending line, is provided for the spreading of the sliding board body (2, 2a) depending on the deflection of the snow sliding board.
3. Snow sliding board according to Claim 1 or 2, characterized in that the spreading device (9, 9a) or its spreading element (22, 33) is connected via a coupler (12) transmitting tensile and/or pushing forces, preferably via a coupling rod (13) which acts on a coupling or connecting point (15) of the spreading device (9, 9a), to a further action or coupling point (14) on the snow sliding board offset in a longitudinal direction of the sliding board body (2, 2a), and in that at least one of these coupling points is offset radially in relation to the bending line of the sliding board body (2, 2a) with respect to its bending axis.
4. Snow sliding board according to one of the preceding claims, characterized in that the at least one spreadable portion (2') is provided in the sliding board body (2, 2a) offset in a longitudinal direction (L) of this body in relation to a binding region (5).
5. Snow sliding board according to one of the preceding claims, characterized in that the at least one spreadable portion (2') is provided at a rear end (4) of the sliding board body (2, 2a).
6. Snow sliding board according to one of the preceding claims, characterized in that the sliding board body (2, 2a) is provided on the part length (2') with at least one slot or a slot-like opening (8, 30) and the spreading device (9, 9a) brings about spreading of the sliding board body (2, 2a) in the region of this slot or in edge regions (10) formed between the at least one slot (8, 30) and longitudinal sides of the sliding board body.
7. Snow sliding board according to one of the preceding claims, characterized in that the spreading element (22) of the spreading device (9) has at least two spreading levers (25) which with an inner end are provided pivotably on a common support (23), which is displaceable in the longitudinal direction of the recess or of the slot (8) for spreading, and with outer ends are articulated on a bearing (17) provided or formed at the edge (8') of the recess (8), and in that the spreading levers (25), which with their longitudinal extent enclose an angle with one another, are pivotable for reducing and/or increasing this angle when the spreading device (9) is actuated.
8. Snow sliding board according to Claim 7, characterized in that the longitudinal extent of the recess (8) is the bisector of the angle formed between the two spreading levers (25).
9. Snow sliding board according to Claim 7 or 8, characterized in that a number of spreading lever pairs in each case having two spreading levers (25) are provided.
10. Snow sliding board according to one of Claims 7-9, characterized by a frame element (16) with two leg-like frame portions (17) which are interconnected at one end via a further frame portion (18), and in that the spreading levers (25) are with their outer ends mounted pivotably in the first frame portions (17), the first frame portions (17) being provided for example at the longitudinal edges of the recess (8).
11. Snow sliding board according to one of Claims 7-10, characterized in that the spreading levers (25) are part of a lever element (23) which has a connecting element (24) on which the spreading levers (25) are articulated with their inner ends.
12. Snow sliding board according to one of Claims 7-11, characterized in that the spreading levers (25) and the associated connecting element (24) are made in one piece from plastic.
13. Snow sliding board according to one of the preceding claims, characterized in that the spreading element (33) is an element acting in a wedge-like manner.
14. Snow sliding board according to one of the preceding claims, characterized in that the spreading element (33) of the spreading device (9a) is displaceable by at least one spreading travel in an axial direction, preferably in the direction of the longitudinal axis of the sliding board body, and at least one spreading or control surface extending continuously and/or in steps is formed on the spreading element (33) and/or on the sliding board body (2a) in the region of the recess (30).

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