Ski, or similar device for sliding on snow, having a mounting aid for a binding

Abstract

Ski or similar device for sliding on snow having a mounting plate (12) for a binding or for parts thereof, such as a binding plate and/or heel plate, which mounting plate is mounted on, especially bonded or welded to, the top face of the ski, wherein the mounting plate (12) is of foil-like form and is bondable or weldable onto the top face of the ski in such a manner that it effectively defines a structural unit therewith.

Claims

1. A device for sliding on snow, comprising: a ski having a top face; a mounting plate secured to the top face of the ski wherein the mounting plate is made of plastic material, said mounting plate comprising one or more elements that are configured to associate with a binding or parts thereof, wherein the mounting plate comprises two longitudinal edges and a central base portion, the edges being raised relative to the central portion so that they define an undercut longitudinal guide for the binding or a binding plate wherein the mounting plate is thin and flexible relative to the ski and is bonded with a thinner layer of adhesive over essentially its entire bottom surface directly onto the top face of the ski without screws and with essentially no intervening materials other than the adhesive in such a manner that it effectively defines a structural unit therewith and wherein the modulus of elasticity “E” of essentially all parts of the mounting plate are appreciably lower than that of the ski, the modulus of elasticity “E” of essentially all parts of the mounting plate being approximately from 500 to 2000 MPa, and the modulus of elasticity “E” of the ski being approximately from 10 to 60 GPa.

2. A device according to claim 1, wherein the mounting plate comprises an underside having a peripheral edge, the underside having a groove extending adjacent the peripheral edge, for accommodating excess adhesive.

3. A device according to claim 2, wherein the central base portion has an underside defining an underside level and the groove is bounded on its outside by a portion that projects beyond the underside level of the central base portion.

4. A device according to claim 3, wherein the groove has a depth of approximately from 0.15 mm to 0.25 mm relative to the underside level of the central base portion.

5. A device according to claim 1, wherein the mounting plate comprises an underside having positioning lugs or pins that correspond to corresponding positioning openings in the top face of the body.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

(1) FIG. 1 is a plan view of a mounting plate formed in accordance with the invention for bonding or welding over the whole face to the top face of a ski;

(2) FIG. 2 is a longitudinal section of the mounting plate according to FIG. 1 along the line II-II in FIG. 1;

(3) FIG. 3 is an inclined top view, in perspective, of a mounting plate corresponding to that according to FIG. 1;

(4) FIG. 4 is a lateral view of a mounting plate corresponding to that according to FIG. 1, showing positioning lugs or pins on the underside;

(5) FIG. 5 is a view from below of the mounting plate according to FIG. 1; and

(6) FIG. 6 is a cross-section of the mounting plate according to FIG. 1 along the line VI-VI in FIG. 1.

DETAIL DESCRIPTION OF THE INVENTION

(7) Shown in FIGS. 1 to 3 is a mounting plate 12 which is of foil-like form. It is a mounting plate that can be produced by injection moulding. In the central region it has two panels of channels 30, 31, and in the heel region it has locking recesses 36. Both the channels 30, 31 and the locking recesses 36 are integrally formed in the mounting plate. They co-operate lockingly with complementary locking projections on the underside of a binding or binding plate or heel plate. The mounting plate 12 according to FIGS. 1 to 3 is accordingly suitable for locating a front binding plate, with or without integral binding housing, at one end and locating a heel plate, formed separately therefrom, at the other end. The channels 30, 31 are each bounded by inclined tooth profiles, the inclined tooth profiles associated with the front channels 31 each having a rear vertical flank and an inclined front flank that slopes away forwards, whereas the inclined tooth profiles associated with the rear channels 30 are each defined by a front vertical flank and an inclined flank that slopes away rearwards. Accordingly, the binding or the binding housing or a binding plate needs to include a complementary locking means having a first locking unit active only towards the front and a second locking unit active only towards the rear so that, when the locking unit active only towards the front is released, the binding is displaceable only towards the front and, when the locking unit active only towards the rear is released, the binding is displaceable only towards the rear. The locking recesses 36 are by contrast symmetrically formed. They are separated from each other in each case by transverse lands 10.

(8) The mounting plate 12 according to FIGS. 1 to 3 is preferably bonded or welded to the ski top face at the ski manufacturer's. Since the mounting plate 12 bears against the ski top face over a large area, it is also possible for a bonding or welding join of correspondingly large area to be produced. The advantage of that large-area join has already been described hereinabove.

(9) The two longitudinal edges 37, 38 of the mounting plate 12 are raised relative to a central base portion 39, so that they define an undercut longitudinal guide for the binding or a binding plate. Furthermore, it can also be seen from FIGS. 1 and 2 that the mounting plate 12 comprises central longitudinal lands 40, which are interrupted by the front and rear locking channels 31 and 30 and also by the locking recesses 36 arranged in addition in the heel region.

(10) In respect of the locking elements of the binding, or of parts of the binding, associated with the locking channels 30, 31 and with the locking recesses 36, it should also be mentioned that they are preferably integral components of the binding or of parts of the binding. The locking elements are preferably formed as tabs joined in one piece with the binding, a binding housing or a binding plate and/or a heel plate, on the underside of which tabs there is formed a locking projection which co-operates with the locking channels 30, 31 and locking recesses 36. The locking channels and locking projections can, of course, also be provided in converse manner on the mounting plate on the one hand and on the binding or a heel plate on the other hand. Attention is at this point again drawn to the fact that the mounting plate has approximately the same values in terms of thermal expansion tensile strength flexural strength and torsional rigidity

(11) as the associated fastening portion on the ski. In order that the flexural behaviour of the ski is not affected or is affected only to a small extent, the mounting plate 12 has a modulus of elasticity “E” that is appreciably lower than that of the ski body, especially a modulus of elasticity corresponding to that of the top lamina defining the top face of the ski. The mounting plate 12 then behaves like an integral component of the ski body or of the top lamina.

(12) As already stated at the outset, the thickness of the mounting plate 12 is approximately from 1.5 to 3.5 mm, preferably approximately 3.0 mm. The thickness of the mounting plate naturally also depends on the material used therefor, which in turn also affects the required strength of the mounting plate, especially of the guide edges 37, 38.

(13) FIG. 4 is a lateral view of the mounting plate according to FIG. 1 from which it can be seen that there are provided on, especially formed on, the underside of the mounting plate 12, that is, on the side facing the top face of the ski, two approximately centrally arranged positioning pins 41, longitudinally spaced from each other, that correspond to corresponding positioning openings—not shown here—in the top face of the ski. By that means bonding of the mounting plate 12 to the top face of the ski is possible at the particular location provided without there being any risk of slippage.

(14) Furthermore, it can also be seen from FIG. 4 that there are provided at the two longitudinal sides of the mounting plate 12, here in the region of the undercut longitudinal guide, two projections 42, 43 longitudinally spaced from each other which act as a movement stop for a binding or binding plate pushed onto the mounting plate 12 from the front, that is from the left in FIG. 1, on the one hand, and for a heel plate pushed onto the mounting plate from the rear, that is from the right in FIG. 1, on the other hand. The front projection 42 acts as a stop for movement of the binding or binding plate towards the rear, whereas the rear projection 43 limits displacement of the heel plate towards the front.

(15) According to FIGS. 5 and 6, there is provided on the underside of the mounting plate 12, that is, on the side facing the top face of the ski, a groove 45 for accommodating excess adhesive, which extends close to the peripheral edge 44. The groove 45 is bounded on the outside by a land 46 that projects slightly, that is, by about 0.1 mm, beyond the underside level 47 of the central base portion 39. As a result, a correspondingly narrow gap is formed between the underside of the central base portion 39 of the mounting plate on the one hand, and the top face of the ski on the other hand, that gap region being bounded at the edge side by the groove 45. The groove 45 furthermore has a depth of approximately from 0.15 to 0.25 mm relative to the central base portion 39, that is, to the underside level 47 thereof. As a result of that construction, a uniformly thin distribution of adhesive between mounting plate 12 and ski top-face is achieved, which ensures an extremely high degree of bonding between those two components, with the result that the binding detaches from the mounting plate rather than the mounting plate detaching from the ski top face.

(16) Referring to FIGS. 1 and 6, it should also be mentioned that the transverse extent of the channels 30, 31 and locking recesses 36 corresponds to approximately from 35% to 65% of the total width of the mounting plate 12.

(17) Finally, in terms of the total concept it should be mentioned, in addition, that the mounting plate shown makes it possible in a simple manner for the binding to be positioned in front of, in, or behind the centre of gravity of the ski or similar device for sliding on snow. Furthermore, the heel plate can be adapted in a simple manner to different sizes of shoe.

(18) In respect of both of the above-mentioned projections 42, 43 which act as stops, it should be mentioned, in addition, that their spacing is approximately from 30 mm to 40 mm.

(19) In FIG. 6 there is otherwise shown, in addition, a portion of a ski body 11 having a ski top-face 13.

(20) All of the features disclosed in the application documents are claimed as being important to the invention, insofar as they are novel, individually or in combination, with respect to the prior art.

REFERENCE NUMERALS

(21) 10 transverse land

(22) 11 ski

(23) 12 mounting plate

(24) 13 ski top-face

(25) 30 channel

(26) 31 channel

(27) 36 locking recess

(28) 37 longitudinal edge

(29) 38 longitudinal edge

(30) 39 central base portion

(31) 40 longitudinal land

(32) 41 positioning pin

(33) 42 front projection

(34) 43 rear projection

(35) 44 peripheral edge

(36) 45 groove

(37) 46 land

(38) 47 underside level of the central base portion 39

(39) 48 adhesive-accommodating region