FR2657025A1 - DEVICE FOR MOUNTING A SHOE ON A SKI. - Google Patents

Abstract

The present invention relates to a device for mounting a boot (2) on a ski (1), which is held between two safety bindings (3, 4) respectively immobilizing the front and the rear of the boot, comprising a longitudinal intermediate support plate (5) fixed to the ski. This device is characterized in that the intermediate support plate (5) rests freely on a support element (13) whose dimension, in the longitudinal direction of the ski, is less than that of the intermediate support plate (5), and which is mounted so as to be able to slide longitudinally below the intermediate support plate (5) and to be immobilized in an adjustable longitudinal position.

Description

The present invention relates to a device for

fitting a shoe on a ski.

  For the practice of alpine skiing the shoe of a skier is held between two safety fasteners, namely a stop before now the front end of the shoe and a heel now holding the rear end thereof. These two bindings are generally mounted on the upper surface of the ski by means of screws. Furthermore, the boot is resting on the ski in two zones situated substantially behind the front binding and substantially in front of the rear binding. These two zones correspond to the front of the ski. the sole and heel of the shoe, and their spacing is imposed by the length of the shoe It follows that the exchanges of forces between the ski and the shoe, in a vertical direction, necessarily pass through these two support zones. if the disturbances caused by the bindings themselves are not taken into account, the vertical forces that cause the ski to bend are located on the ski in c. are two zones and their spacing is imposed by the length of the shoe. To remedy this drawback, it has already been proposed, as described in international patent application WO 83/03360, to mount the front and rear fasteners on an intermediate support plate and to interpose, between this support plate and the upper surface of the ski, a support element constituted, in this case, by a layer of elastic damping material extending substantially over the entire length of the intermediate support plate Such a mounting device allows to better distribute, over the length of the layer of damping material, the vertical forces that the shoe transmits to the ski, but it does not allow to control the location of the areas in which the shoe transmits forces to the ski and therefore, this device does not allow to control the mechanical characteristics skiing, including its flexion in the area of

  skate, that is to say under the shoe.

  One of the aims of the invention is to propose a mounting device which overcomes these disadvantages, and which makes it possible in particular to control the location of the points.

support of the shoe on the ski.

  Another object of the invention is to propose a device that makes it possible to vary these points of support of the boot on the ski, and in this way to modify the mechanical response characteristics of the intermediate support plate to the stresses exerted on this plate

  by the skier's boot while skiing.

  For this purpose, this device for mounting a boot on a ski, which is held between two safety fasteners immobilizing respectively the front and the rear of the boot, comprising a longitudinal intermediate support plate attached to the ski and on which is mounted at least one of the two fasteners, and at least one support element interposed between the intermediate support plate and the upper surface of the ski, is characterized in that the intermediate support plate rests freely on the support element and this bearing element whose dimension, in the longitudinal direction of the ski, is smaller than that of the intermediate support plate, is mounted so as to slide longitudinally below the intermediate support plate and be immobilized in a position

longitudinal adjustable.

  The following will be described by way of non-limiting examples, various embodiments of the present invention, with reference to the accompanying drawing in which: Figure 1 is a schematic vertical and longitudinal sectional view of a mounting device a

  shoe on a ski according to the invention.

  FIG. 2 is a vertical and longitudinal sectional view, on a larger scale, of part of the

  mounting device o is a support pad.

  FIG. 3 is a vertical sectional view and

  transverse line along line III-III of FIG.

  FIG. 4 is a plan view of the base of the

  mounting device, in the developed state.

  Figure 5 is a vertical and longitudinal sectional view of an alternative embodiment of the mounting device. FIG. 6 is a vertical sectional view and

  cross-section taken along the line VI-VI of Figure 5.

  FIG. 7 is a vertical and longitudinal sectional view of another variant of the mounting device adapted to a ski having a section

cross section.

  FIG. 8 is a vertical sectional view and

  transverse line along line VIII-VIII of FIG.

  FIG. 9 is a vertical and longitudinal sectional view of another alternative embodiment of the mounting device adapted to a ski having a cross section

profiled.

  FIG. 10 is a vertical sectional view and

  cross-section taken along line X-X of FIG.

  Figure 11 is an elevational view of another alternative embodiment of the mounting device according to the invention. FIG. 12 is a vertical and longitudinal sectional view, on a larger scale, of the central portion

  of the mounting device shown in FIG.

  The mounting device according to the invention which is shown schematically in Figure 1, is intended to immobilize, on a ski 1, a ski boot 2 shown in phantom This ski boot is held between two safety fasteners, namely a stop before 3, now the front end of the shoe 2, and a heel 4, now the rear end of this shoe The front stop 3 and the heel 4 are respectively fixed on the two opposite end portions of a support plate rectangular intermediate 5, elongated longitudinally. The shoe also rests on two support plates 3a and 4a of the support plate 5, respectively located behind the front stop 3 and in front of the heel 4 These two support plates 3a and 4a are traditional, and in particular, the front support plate 3 has a sliding surface intended to facilitate the lateral movement of the boot when released from the abutment before 3 The shoe, for its part, has two bearing surfaces by which it rests on the two support plates 3a and 4a These two bearing surfaces are standardized and, for example, they comply with the standard

  DIN 7880 Part 1, which is currently in force.

  The spacing between the support plates 3a and 4a is therefore imposed in this case by the length of the shoe, as well as by the distance separating the two front and rear fasteners. In addition, the vertical support forces of the shoe on the support plate 5 pass through these two

support plates 3a and 4a.

  The intermediate support plate 5 is arched so as to form an upper horizontal platform 5a extending at a distance from the upper surface 1a of the ski 1, and which is extended at its two ends by two end portions 5b, 5 c arched downwards One of the end portions 5b is fixed rigidly to the ski 1, by means of a screw 6, while the other end portion 5c has an oblong hole 7, elongated longitudinally, which is crossed by a screw 8 engaged in the ski 1 Therefore the end portion c can move slightly in the longitudinal direction relative to the ski, to take into account the variation of camber of the ski during the practice of skiing, this displacement being

  limited according to the length of the oblong hole 7.

  The mounting device according to the invention further comprises, below the upper horizontal platform 5a of the intermediate support plate 5, a base 9 of rectangular shape, longitudinally elongated, whose width corresponds substantially to the width of the ski 1 and which is fixed on it, at its two ends, by means of screws 11 passing through holes 12 drilled in both

  opposite end portions of the base 9 (Figure 4).

  In this embodiment of the invention the intermediate support plate 5 rests freely on two support elements 13, spaced from one another in the longitudinal direction, which are interposed between the horizontal platform 5 a of the plate 5 and the base 9, in the zones o are mounted the two fasteners 3,4 These bearing elements 13 are constituted by pads of elastic or rigid material whose longitudinal positions can be adjusted at will according to the characteristics of mechanical response that is desired from the intermediate support plate 5 during the practice of skiing The support plate 5 is supported on the ski by means of the pads 13, so that the props forces transmitted by the shoe to the support plate 5 are then transmitted to the ski by the pads 13, and vice versa in the opposite direction Since the longitudinal position of the pads is adjustable, the vertical forces that it s the ski is subjected are located in adjustable areas in a longitudinal direction, although the shoe rests on traditional bearing surfaces The support pads 13 are constituted by transversely extending parallelepipedal blocks, whose vertical dimension corresponds substantially at the distance normally separating the underside of the horizontal platform 5a from the plate 5 and the upper face of the base 9 The pads 13 extend over the entire width of the intermediate support plate 5 and the base 9, as shown in the drawing, or only on a part of

this width.

  Each pad 13 is immobilized in its desired longitudinal position by any appropriate means. For example, each pad may have, in its central part, an upper projection 14 extending upwards through a longitudinal slot 15 provided in the horizontal platform. of the support plate 5 On the vertical projection 14 and above the horizontal platform 5a of the support plate 5 is mounted to rotate, about a horizontal and transverse axis 16, a locking lever 17 This lever presents at its lower part, a cam profile 18 such that when the lever 17 is lowered to the horizontal locking position, the cam profile 18 clamps the horizontal platform 5a of the support plate 5 on the support pad under -jacent 13, which ensures the immobilization of the support pad 13 against

any longitudinal displacement.

  The platform 5a of the support plate 5 is retained against an upward movement by means of flanges 19 forming an integral part of the base 9 These flanges 19 are formed from side tabs adjoining the base 9 (FIG. 4), which are bent vertically upwards then horizontally, in the direction of the vertical and longitudinal plane of symmetry of the mounting device. Each flange 19, once thus folded up, therefore comprises a vertical wing 19 a , extending upwardly from a longitudinal edge of the base 9, and an upper horizontal flange 19b, bent inward and extending just

  above the upper face of the platform 5 a.

  According to a variant the base 9 could be removed and the pads 13 would then directly in contact, by their lower faces, with the upper surface of the ski 1 In this case the vertical retention of the platform 5 would be provided by independent flanges 19, with vertical and cross section in the form of an open C-shape

  upwards, directly attached to the ski 1.

  In the alternative embodiment shown in Figures 5 and 6 the mounting device comprises an intermediate support plate 21, cantilever, which supports only the heel 4, the front stop, not shown, being fixed either directly on the ski, in the same way as the heel 4, that is to say by means of another support plate 21 cantilever independent The support plate 21 is constituted by a rectangular plate whose end is free and the rear end is secured to an anchor block 22 fixed to the ski The support plate 21 which extends cantilevered forwardly from the rear anchor block, rests freely on a bearing pad 23, adjustable longitudinal position, which is applied directly to the upper surface of the ski 1 This support pad which is constituted by a parallelepipedal block extending in the transverse direction, is traversed from part of a longitudinal hole threaded in which is engaged a longitudinal worm 24 This worm comprises, at its rear end, a head rotatably mounted in the anchor block 22, without being able to move in translation in the longitudinal direction This head 25 is accessible from the rear to be able to turn the worm 24 The front end of the worm 24 is free and it located a little behind

  relative to the free end of the support plate 21.

  This support plate 21 is held upwards by an upwardly open C-shaped flange 26 which is fixed on the upper surface 1a of the ski 1, by its lower core 26a, between the heel piece 4 and the free end of the platform 21 The flange 26 whose core 26 has extends over the entire width of the ski 1, comprises two lateral and vertical wings 26b, 26c extending upwards, which are extended , at their upper ends, by two horizontal wings 26 d, 26 e folded towards one another and holding the support plate 21 towards the

  top From the above description it can be seen that

  turning the worm 24 in one direction or the other, it is possible to move longitudinally the support pad 23, under the support plate 21, to place it in the desired longitudinal position in which it is immobilized by following his coupling with the screw

endless 24.

  According to one variant, several skids 23 may be traversed by the same screw so as to be able to be moved

  simultaneously in the longitudinal direction.

  In the variant embodiment shown in FIGS. 7 and 8, the mounting device according to the invention is associated with a ski 27 having a profiled cross-section. This ski 27, whose lower part has a rectangular cross-section, is extended towards the high by a central longitudinal projection 27a of cross section

  rectangular (or trapezoidal) but of smaller width.

  In this way the upper projection 27 has ski 27 delimits,

  with its lower part two side rabbets 27b, 27c.

  On the upper horizontal face of the projection 27a of the ski 27 is fixed a rectangular plate 28, whose width is a little larger than that of the upper projection 27, so that its lateral parts are overhanging with respect to the two rabbets The intermediate support plate 5 of the mounting device shown in FIGS. 7 and 8 is of the type described above with reference to FIG. 1. It is however fixed by its two end parts 5b, 5c and 5c. on the plate 28 carried by the upper projection 27a of the ski 27 Again two two support pads 29, with an adjustable longitudinal position, are interposed between the horizontal platform 5a of the support plate 5 and the plate 28 which have substantially the same width As best seen in Figure 8, each pad 29 has a width greater than that of the upper platform 5a of the plate 5 and the plate 28, and it comprises two side portions 29a having upper horizontal grooves 29b and lower 29c in which are respectively engaged the side portions of the platform 5a and the plate 28 Thus the support pad 29 is held up on the ski 27 as a result of the engagement of the side portions of the plate 28 in the lower grooves 29c of the shoe 29, and in turn the upper platform 5a is held upward as a result of the engagement of its lateral extremes in

  the upper grooves 29b of the pad 29.

  In the variant embodiment shown in FIGS. 9 and 10, the mounting device is associated with a ski 27 of the type with a profiled cross-section, that is to say with an upper projection with a rectangular cross section or

  trapezoidal, and it includes a door support plate

  false 21 on which is fixed only the heel 4 La

  posterior end portion 21a of the carrier plate

  21 is arched towards the ski and is fixed, by means of a screw 6, on the upper surface of the upper projection 27a of the ski 27 The support plate 21 rests freely on two support pads 31 which are interposed between the side parts of the underside of the

  support plate 21 and the two rabbets 27b, 27c of the ski 27.

  These two pads 31 are aligned transversely and are housed, in an adjustable longitudinal position, under the heel 4 Each pad 31 is pierced right through a longitudinal hole which is traversed by a longitudinal guide rod 32 whose two ends , folded upwards, are fixed to the support plate 21 Each pad 31 can slide longitudinally along the rod 32 associated therewith, being held in position by simple friction Finally the support plate 21 is held upwardly, near its free anterior end, by means of a vertical screw 33 passing through a hole drilled in the plate 21, screwed into the upper projection 27a of the ski 27 and whose head bears on the upper face of the plate 21 Figures 11 and 12 show an alternative embodiment in which the intermediate support plate 5 is not connected to the ski 1 at both ends It extends horizontally, in s all, above the base 9 and it rests on the two bearing pads 13 adjustable longitudinally It is retained transversely and vertically by the flanges 19 from the base 9, as in the case of the form of The embodiment shown in Figure 1 Moreover it is maintained in the longitudinal direction by a device 34, located between the two pads 13, under the central portion of the plate 5, which however allows a vertical displacement this central portion 34 This device is constituted by two female elements 35 and male 36 engaged one in the other vertical sliding In the non-limiting embodiment shown in Figures 11 and 12 the female element 35 is constituted by an upper cylindrical stud fixed to the lower face of the intermediate support plate 5 and the male element 35 is a lower cylindrical stud fixed to the upper face of the base 9 The upper cylindrical stud 35 has an annular shape nular and in its central recess 35 is engaged a central stud 36a of the stud 36 extending upwards The two studs 35 and 36 thus provide a retention of the intermediate support plate 5 to the

  both longitudinally and transversely.

  Naturally a reverse arrangement of the one described above could be adopted, that is to say that the lower pad 36 could have an annular shape and the upper pad 35 could carry a nipple extending downwards and engaged in the central recess of the lower stud

ring 36.

  Since the retention of the intermediate support plate 5 in the transverse direction is ensured by the flanges 19 coming from the base 9, the device 34 could comprise, according to a variant, means preventing any displacement of the plate 5 only in the longitudinal direction. These means could comprise a vertical finger secured to the plate 5 (or the base 9) and engaged closely between two stops integral with the base 9 (or the plate 5), these two stops being arranged on both sides. another finger in

the longitudinal direction.

Claims (22)

  1. Device for mounting a shoe (2) on a ski (1,27), which is held between two safety fasteners (3,4) respectively immobilizing the front and the rear of the shoe, comprising a plate intermediate longitudinal support (5,21) fixed to the ski and on which is mounted at least one of the two fasteners (3,4), and at least one support element (13,23,29,31) interposed between the intermediate support plate (5,21) and the upper surface of the ski (1,27), characterized in that the intermediate support plate (5,21) rests freely on the support element (13,23,29,31 ) and this bearing element (13,23,29,31) whose dimension, in the longitudinal direction of the ski, is smaller than that of the intermediate support plate (5,21), is mounted so as to be able to slide longitudinally below the intermediate support plate (5,21) and be   immobilized in an adjustable longitudinal position.   2. Device according to claim 1 characterized in that the intermediate support plate (5) carries the two safety fasteners (3,4), and at least two support elements (13,29) are mounted sliding longitudinally under the plate intermediate support (5), respectively in the   areas where the two bindings are mounted.   3 Device according to claim 2 characterized in that the intermediate support plate (5) is fixed to   both ends (5b, 5c) on the ski (1.27).   4. Device according to claim 2 characterized in that the intermediate support plate (5) is free at both ends, means (19) are provided to retain it in the transverse and vertical direction and means (34), arranged under the central portion of the plate (5), are provided to retain the plate (5) in the longitudinal direction while allowing a slight vertical movement of the central portion of the plate (5). 5. Device according to claim 4 characterized in that the means (34) provided for retaining the intermediate support plate (5) in the longitudinal direction comprise a male element (36,36 a) integral with the ski (1) (or the intermediate support plate (5)) and a female element (35, 35 a) integral with the intermediate support plate (5) (or ski (1)) and in which the male element is engaged (36,36 a).   6. Device according to claim 1 characterized in that the intermediate support plate (21) supports a single security attachment (4), it extends cantilever from an anchor point (22, 21 a) and at least one support element (23,31) is arranged below the cantilever support plate (21), in the zone where the fixation is mounted. of security.   7. Device according to any one of the preceding claims characterized in that each support element (13,29,31) is held in position by friction. 8 Apparatus according to any one of   Claims 1 to 6, characterized in that it comprises   means (14-18,24) for locking the support element in position.   9. Device according to claim 8 characterized in that each support element (13) has in its central part, an upper projection (14) extending upwardly through a longitudinal slot (15) in the support plate (5), and on this vertical projection (14) and above the support plate (5) is rotatably mounted, about a horizontal and transverse axis (16), a locking lever (17) which has, at its lower part, a cam profile (18) such that when the lever (17) is lowered to a horizontal locking position, the cam profile (18) squeezes the   support plate (5) on the underlying support element (13).   10. Apparatus according to claim 8 characterized in that the support element (23) is traversed right through a threaded longitudinal hole in which is engaged a longitudinal worm (24) whose head (25) is rotatably mounted in an anchoring block (22) fixed to the ski, without being able to move in translation in the direction longitudinal.   11. Device according to any one of   preceding claims characterized in that it comprises   means (19; 26; 29a, 29b, 29c; 33) of vertical retention of the   intermediate support plate (5,21) upwards.   12 Apparatus according to claim characterized in that the vertical retaining means are constituted by flanges (19) formed by cambered legs from a base (9) fixed to the ski and on which slides the bearing element ( 13), each flange (19) comprising a lateral vertical wing (19 a) and a horizontal wing   upper (19b) folded over the support plate (5).   13. Apparatus according to claim 11 characterized in that the lateral retaining means are constituted by an independent flange (26), vertical section and transverse C-shaped open upwards, whose lower core (26 a) is attached to the ski and whose horizontal upper wings (26d, 26e), extending towards each other, are located above the plate intermediate support (21).   14 Apparatus according to claim 11 characterized in that the vertical retaining means are constituted by side portions (29 a) of the support element (29) which are attached to the ski, at their lower parts, and hooked to the intermediate support plate   (5) at their upper parts.   Device according to Claim 14, characterized in that each support element (29) comprises, in its lateral parts (29a), upper grooves (29b) into which the lateral parts of the intermediate support plate ( 5), and lower grooves (29c) in which parts are engaged   protruding provided on the upper surface of the ski (27).   16. Device according to claim characterized in that the vertical retaining means are constituted by a vertical screw (33) passing through a hole drilled in the intermediate support plate (21), which is screwed into the upper part (27 a) of the ski (27) and whose head is supported on the upper face of the support plate (21).   17 Apparatus according to any one of   preceding claims characterized in that the element   support (13,23), of elastic or rigid material, is constituted by a parallelepipedal block extending   substantially across the width of the ski (1).   18 Apparatus according to any one of   1 to 16, associated with a ski (27) having a   profiled cross-section comprising a lower portion with a rectangular cross-section extended upwards by a longitudinal central projection (27 a) of rectangular or trapezoidal cross-section but of smaller width, so as to delimit two lateral rebates (27 b, 27 c ) characterized in that the support element   (29,31) is engaged in the rabbets (27b, 27c) of the ski (27).   19. Apparatus according to claim 18 characterized in that on the upper horizontal surface of the projection (27 a) of the ski (27) is fixed a rectangular plate (28), whose width is a little larger than that of the protrusion upper (27 a) so that its lateral parts are overhanging with respect to the two side rabbets (27 b, 27 c) and the intermediate support plate (5) is fixed by its two end parts (5 b, 5 c) on the plate (28) carried by the upper projection (27 a) of the ski (27).   20. Device according to claim 19 characterized in that two bearing pads (29), with an adjustable longitudinal position, are interposed between the horizontal platform (5 a) of the support plate (5) and the plate (28).   which have substantially the same width.   21. Device according to claim 20 characterized in that each pad (29) has a width greater than that of the upper platform (5 a) of the plate (5) and the plate (28), and it comprises two side portions (29a) having upper (29b) and lower (29c) horizontal grooves in which are   engaged respectively the lateral parts of the platform form (5a) and plate (28).   22. Apparatus according to claim 18 characterized in that an end portion (21a) of the support plate (21) is arched towards the ski, it is fixed by means of a screw (6) on the surface upper projection (27a) of the ski (27), the support plate (21) extends cantilevered and rests freely on two support pads (31) which are interposed between the lateral parts of the the lower face of the support plate (21) and the two rabbets (27b, 27c) of the ski (27), these two pads (31) being aligned transversely, and each pad (31) is pierced from one side to the other, a longitudinal hole which is traversed by a longitudinal guide rod (32) whose two ends,   folded upwards, are fixed to the support plate (21).