FR2609408A1 - FIXING FOR BACKGROUND SKIING - Google Patents

Abstract

THE PRESENT INVENTION CONCERNS A BINDING FOR CROSS-COUNTRY SKIING. IN THIS BINDING, THE SHOE 2 IS REMOVABLE ARTICULATED ON THE SKI 1 AROUND AN AXLE 3 WHILE A STIRRUP 24 FOR RETAINING THE SHOE 2 AND ELASTICALLY RETURNING THIS LATEST TO A POSITION IN WHICH IT LIES FLAT ON THE SKI IS ITSELF ARTICULATED ON THE SKI 1 AROUND AN AXLE 17 PARALLEL TO THE AXIS 3 OF ARTICULATION OF THE SHOE; THE CALIPER 24 TAKES SUPPORT ON A ANTERIOR ZONE 54 OF THE SHOE 2 BY MEANS OF MEANS 27, 58 AUTHORIZING A RELATIVE SLIDING. THE FORM OF THE MEANS 27, 58 PROVIDED FOR THIS EFFECT ALLOWS TO INFLUENCE THE RETURN TORQUE APPLIED TO THE SHOE AS A FUNCTION OF THE INCLINATION OF THE LATTER IN RELATION TO THE SKIING.

Description

The present invention relates to a fixation

for cross-country skiing.

  More specifically, it concerns a fixa-

  of a type intended to cooperate with an anterior zone of a shoe and comprising for this purpose means of

  removable from said zone with respect to a ski, defined

  an axis of articulation of said zone with respect to the ski, a stirrup having two branches capable of laterally traversing said zone, respectively from

  and other of this, means of permanent articulation

  of the branches relative to the ski, around a same axis located on the same side of said zone of the boot as said axis of articulation of said zone with respect to the

  ski, means for releasably supporting said branches on the

  said zone, located opposite said axes with respect to

  the latter, and means of energy to apply

  said stirrup an elastic biasing rotation about the axis of articulation of the branches relative to a ski,

  in a given direction of support of the said

  vible said branches on said area and support said support means of said zone relative to the ski,

  as well as support of the shoe flat on the ski.

  In a fastener of this type, described for example by the international patent application WO 8503643, the respective axes of articulation of the branches of the stirrup and the anterior zone of the boot with respect to the ski are merged so that the zone front of the shoe and stirrup, recalled on this area by the

  means of energy, behave as an integral

  in relation to the ski when the foot is extended during the practice of skiing

background.

  As a result, for each orientation of the boot with respect to the ski, the applied return torque

  to the shoe by the stirrup, with reference to the axis of

  culation of the boot on the ski, merges with the torque applied to the caliper by the energizing means, with reference to the hinge axis of the stirrup branches relative to the ski; when the means of energization

  have a hairpin spring, as described in the application

  international patent application WO 8503643, the couple of

  applied to the shoe is therefore a function only of the position of the latter with respect to the ski, and the

elastic spring constant.

  The purpose of the present invention is to introduce

  an additional factor of choice as to the value of the booster torque applied to the boot as a function of

  the position of the latter in relation to the ski, for

  put to evolve this pair of reminder differently

  the torque applied to the stirrup by the energizing means

  tion, and thus access a complex evolution of the pair of booster of the shoe without being obliged to

  make use of energy resources themselves complex.

  For this purpose, the present invention proposes a fixation of the type indicated in the preamble, characterized in that the axis of articulation of the anterior zone of the boot relative to the ski is offset relative to the axis of articulation of the branches. compared to skiing and

  parallel to this axis, and that the means of support

  vible branches on the anterior area of the shoe

allow relative sliding.

  It is easy to see that the only dissociation

  tion of the respective axes of articulation of the

  the upper part of the shoe and the branches of the stirrup relative to the ski makes it possible to differentiate the torques applied by the energizing means respectively on the stirrup

  and on the shoe; in addition, the resultant slippage

  necessarily between the removable support

  branches of the stirrup on the anterior zone of the

  re and this area, during the pivoting of the shoe by

  compared to skiing, can be used to create an effect

  if of cam, allowing to influence in a predetermined way

  the evolution of the booster torque transmitted to the

  through the stirrup, depending on the direction

  tation of the boot with respect to the ski.

  By playing on this cam effect, thanks to an appropriate conformation of the removable support means

  branches on the anterior zone of the shoe, easily

  a person skilled in the art, it is possible, for example, to provide that the return torque applied to the

  shoe through the caliper grow more vi-

  the torque applied to the caliper by the means of

  when the slope of the boot relative to the ski increases, or that the restoring torque applied to the boot is constant over most of the rotational stroke of the boot relative to the ski, to increase suddenly when an inclination footwear, by

  relative to skiing, close to a predetermined maximum inclination

  mined is reached; these examples are by no means

  and a person skilled in the art will readily understand that

  vention provides access to a wide range of modes of variation of the return torque applied to the shoe, depending on the inclination of the latter relative to the

  on the ski, through the stirrup on which

the means of energization.

  The present invention, however, lends itself to particularly simple embodiments, such as

  it will be apparent from the description below, relating to

  some non-limiting examples of implementation, as well as annexed drawings which are an integral part of

this description.

  FIG. 1 shows a view, in side elevation, of a first embodiment of a fastener

  according to the invention while the ski is shod, the shoe

  sure hold by the binding resting flat on the ski.

  FIG. 2 shows a view from the front, in section through a plane marked II-II in FIG.

  transverse to a longitudinal direction

yenne skiing.

  - Figure 3 shows a top view of the front end of the shoe used in the

  case of this first embodiment of the attachment.

  FIG. 4 illustrates, in a view similar to that of FIG. 1, the boot of the ski in the case

of this embodiment.

  - Figure 5 shows, in a similar view

  to that of Figure 1, a position of this embodiment of

  during the practice of cross-country skiing, the heel (not shown) of the boot

is raised in relation to the ski.

  FIG. 6 illustrates, in a view similar to that of FIG. 1, the heaving of the ski in the case

of this embodiment.

  FIG. 7 shows a second embodiment of a fastener according to the invention, in a view

  similar to that of Figure 4 and with an identical position

  tick of the shoe in relation to the ski, that is to say

off the ski boot.

  FIG. 8 illustrates a third embodiment of an attachment according to the invention, in a view similar to that of FIG. 1, and for a position

  identical of the shoe with respect to the ski.

  FIG. 9 shows a fourth embodiment of an attachment according to the invention, in a view similar to that of FIG. 1 and for a position

  identical of the shoe with respect to the ski.

  - Figure 10 shows a top view of the shoe and a part of the binding, in the case of this fourth embodiment, while the ski is off. Reference will firstly be made to FIGS. 1 to 6, in which a longitudinal ski 1 has been illustrated.

  relative to which a shoe 2 is or may be

  abutting around a transverse axis 3, perpendicular to a median longitudinal plane 4 of the ski, by means of a fixation

According to the invention.

  By convention, in the case of this embodiment of the binding, as in the case of the embodiments which will be described later, it will be assumed that the ski 1 rests, flat, on a horizontal ground and one

  refer to such a position, just as we

  will race in a normal longitudinal direction of movement of the ski, from back to front; Naturally, the level and orientation indications which will appear thereafter do not imply any limitation as to the position in which a fastener according to the invention may be used, and may only be considered as indications.

  relative positioning of the various elements described.

  The ski 1 illustrated by way of non-limiting example

  FIG. 1 is of a type having an upper longitudinal rib 7 extending over most of the length of the ski and forming an integral part thereof.

  ci, between two longitudinal strips 8, 9 of superior face

  which in an area located in the immediate vicinity of

  fixation 5, can be considered as flat and co-

  planar; additionally, the shoe 2 presents

  a sole 10 hollowed with a longitudinal groove, conti-

  naked 11 likely to marry the rib 7 to allow the shoe 2 to occupy in particular a position shown in Figures 1 and 2, wherein the sole 10 rests flat on the strips 8 and 9 of the upper face of the ski 1, respectively on both sides of the rib 7; a

  such a conception is known in itself, and one can not

  It is not within the scope of the present invention to adopt another design, the rib 7 being for example reduced to a boss located in the immediate vicinity of the attachment 5 and for example attached to the ski with the sole function of ensuring the mounting of fixing 5 on

this ski.

  For this purpose, the rib 7, whose current section is for example trapezoidal converging upwardly as is apparent from the examination of Figure 2, or the localized boss replacing the rib 7 has, at least locally located at fastening 5, two flank faces 12, 13 parallel to the median longitudinal plane 4 and symmetrical to each other with respect to this plane, mutually connected upwardly by an upper face 14, for example flat and perpendicular to the

  plane 4, while these singing faces 12 and 13 connect

  tooth down respectively to the upper face strip

  8 and the upper face band 9.

  By way of non-limiting example, the axis 3 is located above the upper faoe 14 of the rib 7 or the localized bossace replacing it; to define this axis 3, the rib 7 carries

  in solidarity, by its face 14 and protruding on this-

  last, two chairs 34 and 35 symmetrical one of

the other in relation to plan 4.

  More specifically, each of the chairs 34 and 35 is delimited, in the direction of a distance from this plane 4, by a flat face 36, 37 coplanar with the face 12 or with the face 13, respectively; towards each other and towards the plane 4, the chairs 34 and 35 are

  delimited by flat faces, respectively

  38 and 39, mutually parallel, symmetrical to each other with respect to the plane 4; the faces 36 and 38 are mutually connected by a edge 40 as well as the faces 37 and 39 are mutually connected by a edge 41, these two edges 40 and 41 being defined one and the other

  by generators perpendicular to the plane 4.

  Along the axis 3, each of the edges 40 and 41 is hollowed out with a respective groove 42, 43 which, as seen more particularly with reference to the groove 42 in FIGS. 1, 4, 5, 6, is open towards the high and delimited downwards by a face such as hemicylindrical 44 of revolution about the axis 3; forward and backward of this axis 3, the hemicylindrical face such as 44 of each groove 42, 43 is connected upwards to plane faces

  such as 45, 46 mutually parallel, at least

  approximately perpendicular to the direction 6, and extending up to the edge 40, 41 of the chair 34, 35, which

  for example, is flat and horizontal at this location.

  According to an axis 17 offset from the axis 3, parallel to the axis 3 and located in the non-linear example illustrated approximately the aploeb of the latter and more precisely slightly ahead of this plumb, at a level below oelui of this axis 3, the ski 1, for example the rib 7 or the localized boss replacing it, is pierced, from its face 12 to its faoe 13, a bore 15 having a cylindrical peripheral face 16 of revolution around 1 17 with a diameter such that the bore 15 is integral between the strips 8, 9 of the upper face of the skil, on the one hand, and the face

superior 14, on the other hand.

  A central section 18 of a rectilinear rod 19 is engaged along the axis 17 in the bore 15, with the possibility of rotation about the axis 17 relative to the rib 7 or to the localized boss replacing it; for this purpose, the rod 19 has, in its central section

  18, a cylindrical peripheral face 20 of revolution

  turn of the axis 17 with a diameter substantially identical to that of the face 16 of the bore 15; on either side of the rib 7 or the localized boss replacing it, the rod 19 extends coaxially so as to have two end portions 22 and 23 cantilevered above the upper face strip 8 and cantilevered above

  of the upper face band 9 of the ski 1, respectively.

  By these end portions 22 and 23, the rod 19 is secured, against any relative movement and in particular against relative rotation about the axis 17, with a stirrup 24, U-shaped, comprising in particular two branches 25 and 26 mutually connected by a straight cross member 27 parallel to the axis 17, at a level greater than that of this axis 17 under conditions

normal use.

  In the nonlimiting example illustrated, the two branches 25 and 26 are flat, parallel to the plane 4 with respect to which they are symmetrical to one another; in particular, they present to each other

  respective plane faces 87, BE mutually parallel

  the, symmetrical one of the other compared to the plane 4

  and spaced apart by a distance corresponding to

  sibly at the mutual spacing of the faces 12 and 13 with

  which they are respectively in sliding contact.

  More precisely, each of the branches 25 and 26 of the stirrup 24, respectively disposed of on each side and

  else of the rib 7 or the localized boss the replacement

  with a lower end zone, respectively

  29, 30 by which it is secured by all

  appropriate means, for example by interlocking and

  weaving, respectively with the extreme portion 22 of the tiae 19 and

  with the end portion 23 of this head 19; both branches

  25 and 26 extend beyond their connection

  integral with the cross-member 27, to end zones

  respective superiority31, 32 by which they

  connect, in solidarity with a spacer 33 pre-

  feeling a concavity turned upward and intended to receive the tip of a ski pole during the heaving, as is apparent from the examination of the sheet 6 and as will be described later, and possibly when donning; advantageously, the two branches 25 and 26 are made

  in one piece with the spacer 33, while the

  verse 27 is reported integrally, other embodiments being possible, however, without departing from the scope of the present invention; similarly, the branches 25 and 26 could have different shapes of the form described without departing from the scope of the present invention, and for example having a curved shape, with mutual symmetry by

  plan 4, between their lower end

  29, 30 and their upper end areas 31, 32; also, the crossbar 27 could be constituted by the spacer 33, judiciously arranged to ensure

  the function of the crossbar 27 which will be described later.

  In a manner known per se, means

  47 are planned to make an orienta-

  stirrup 24, in which the stirrup is raised

  perpendicular to the ski 1 of such

  so that the crossbar 27 is located vertically above the axis 17, above this axis, a privileged position towards which the energizing means 47 recall the stirrup 24 especially when it tilts forwards , in a sense schematized by an arrow 48, around

  of the axis 19 with respect to the ski 1 from this position.

  privileged position; the means of energization 47 were

  schematized as a helical spring 49 dis-

  placed in front of the stirrup 24, in a moderately

  yenne 50 ascending backward so that the spring 49 is supported by a rear end 51 on the stirrup 24, at a level higher than that of the axis 17, and by an anterior end 52 on a stop 53 reach integrally by the rib 7 of the ski 1 or by the localized boss replacing this rib, on the face 14; any means of energy known per se could

  be used for that purpose, whether it is a means of

  acting on the articulation of the stirrup 24 on the ski 1 as described in the French patent application N 86 15945 of November 17, 1986, or

  means of energization acting on the stirrup so as to

  wedged relative to the articulation of the latter on the ski, as shown schematically in Figure 1 and as described for example in the French patent application

N 86 15944 of November 17, 1986.

  To cooperate with the crossbar 27 of the stirrup

  24 and articulate around axis 3 on ski 1, the se-

  10 of the shoe 2 has an anterior projection 54 which, for reasons of simplicity, will be described with reference to the position of the shoe shown in FIGS.

  Figures 1 and 2, as well as with reference to Figure 3.

  It emerges from the fi gures 1 and 2 that the projection 54 is located entirely above the rib 7 or the localized boss replacing it and engaged inside the stirrup 24, between the crossbar 27 of the latter, its branches. 25 and 26 and the upper face 14 of the rib

  7 or localized boss replacing it.

  For this purpose, the projection 54 is delimited,

  in the sense of a distance from the long-distance

  dinal median 4 of the ski if we assume the shoe 2 connected thereto by the attachment 5, for example in the position shown in Figure 1, by two lateral faces 56, 57 planar, parallel to the plane 4, symmetrical l one of the other

  in relation to this plane and mutually spaced from one

  substantially equal to the distance between the respective faces 38 and 39 of the chairs 34 and 35 so that, as it appears in particular in Figure 2, the projection 54 can be interposed between the chairs 34 and 35, with sliding contact between the faces 56, 57 and the faces 38

and 39, respectively.

  Down and forward respectively

  The protrusion 54 is delimited by a singing face 55 whose shape is indifferent since it does not interfere with the joint pivoting movements of the shoe 2 and the binding, with respect to the ski 1, will be described later; for example, downwards, the face 55 has a planar shape and extends a face (not referenced) delimiting the groove 11 of the sole upwards while, towards the front, this face 55 is convexly bent for then present an anterior area of ascerdante plane shape forward if

  reference is made to the position illustrated in ficure 1.

  Upwardly, the projection 54 is delimited by an upper face 58 to which the anterior face as well as the lateral faces 56 and 57 are connected upwards; the upper face 58 is perpendicular to the median longitudinal plane 4 of the ski and for example, as illustrated, flat although another shape may be

  also chosen, as will appear later; the

  this upper 58 of the projection 54 has a state of over-

  face clean to promote a cleaving of the cross 27 of the stirrup 24 on it and, in the position shown in Figure 1, has a rearward ascending orientation so as to have an anterior end 59 whose spacing vis- with respect to the axis 17 is smaller than the spacing of the crossbar 27 with respect to this axis,

  and a posterior end 60 whose distance vis-à-

  screw of the axis 17 is to him higher than the spacing

  crossbar 27 relative to this axis; more precise-

  a distance from the upper face 58 of the protrusion

  54, with respect to the axis 17, greater than the separated spacing

  crossing 27 of this axis 17 is reached between the former

  anterior tremity 59 of the upper face 58 and an area 61 of this face located directly above the axis 17 in the position illustrated in Figure 1; so,

  in this position, the stirrup 24 can not reach the

  privileged description described above because

  relies on the face 58 of the protrusion 54 between the end

  anterior tee 59 of this face 58 and the zone 61, in com-

  providing the stirrup 24 with a slight inclination towards the front,

  from axis 17 in relation to its privileged position

  principal point. In addition, along an axis 62 coincides with the axis 3 in the position illustrated in FIGS. 1 and 2, the projection 54 carries integrally, for example by imprisonment in the constituent material, a tiae

  63 with zones 64 and 65 cantilevered respectively

  relative to the face 56 of the projection 54 and with respect to the face 57 of this projection by a distance from

  more equal to the thickness of the chairs 34 and 35, measured

  the axis 3 between the faces 36 and 38 or between the faces 37 and 39, respectively; these areas cantilevered 64 and

  present respective peripheral faces cvlin-

  revolution dies around the axis 62 with a diameter

  substantially identical to that of the semi-circular

  cylinders such as grooves 42 and 43 chairs 34 and 35 so that, by pressing the end zones 64 and 65 of the rod 63 on the bottom faces such as 44 grooves 42 and 43, establishes a contact guiding

  protrusion 54 at rotation around axes 3 and 62 conferring

  due to the chairs 34 and 35, that is to say with respect to the ski 1; such contact is established in particular in the position illustrated in fi gures 1 and 2, in which the crossmember 27 also bears on the upper face 56 of the projection 54 between the zones 59 and 61 of the latter. With the provisions just described, the operation of the fastener is as follows. It is assumed that, initially, the ski 1 is loosened, so that the stirrup 24 occupies its privileged position in which the crossbar 27 is located at

  in line with axis 17, under the action of the energy

47.

  Then, to wear the ski, the user can in a manner not shown apply the tip of his stick a thrust in the direction 48, that is to say forward and down, to the spacer 33 of the stirrup 24

  to clear up chairs 34 and 35 and in particular

  gorges 42 and 43 of these; the user may also dispense with the use of his stick for this purpose if, as shown in FIG. 4, he applies to the crossbar 27 a thrust forwards by means of the zore

  front of the faoe 55 of the protrusion 54 of the shoe 2, suitable for

  positioned; he becomes particularly

  easy, by a downward movement of the shoe 2, of

  the protrusion 54 between the chairs 34 and 35 and

  the end zones 64 and 65 of the rod 63 in the grooves

  42 and 43, until the sole 10 of the shoe 2 rests on the ski 1 by the side face strips 8 and 9 thereof, which corresponds to a confusion of the axes 62 and 3; it is ensured a correct engagement of the end zones 64 and 65 of the rod 63 in the grooves 42 and 43 chairs 34 and 35, when, according to a preferred embodiment described in more detail in the French patent application N of the same day, the shoe 2 is guided in its downward movement towards the ski 1 by bosses such as 66, carried in solidarity by the

  ski 1 and projecting upwards respectively

  above the upper face strip 8 and above the

  upper face strip 9 to penetrate into cranta-

  transverse lower layers such that the sole 10 presents downwards in its respective zones respectively

  on either side of its groove 11; therefore the se-

  melle 10 of the shoe 2 thus rests on the ski, or the user releases the spacer 33 from the tip of his stick and leaves the stirrup 24 back in direction 9R reverse direction 48 to its preferred position under the action of energizing means 47, the stirrup 27 escapes the

  the anterior zone of the projection 55 of the protrusion 54 and the stirrup 24

  by the energizing means 24 moves back in the direction 98; in either case, the crossbar 27 passes the anterior end 59 of the upper face

  58 of the protrusion 54 of the shoe and continues its movement.

  in direction 68 to abut on this face 58 and, through the projection 54, retain the

  end zones 64 and 65 of the rod 63 in coaxial support con-

  the bottom faces such as grooves 42 and 43 of chairs 34 and 35; the assembly formed by the ski 1, the shoe 2 and the fastener 5 is then in the manner illustrated in FIG. 1, the cross-member 27 being slightly offset forwardly relative to the respective plumbs 6eE axes

  3 and 17 and elastically supported on the upper face

  58 of the protrusion 54, by the energizing means

47.

  So, during the practice of skiing, everything

  foot extension movement translates as a pivot-

  joint use of shoe 2 and stirrup 24 around

  of their respective axes 3 and 17 of articulation with

  ski port 1, in the direction 48 when the heel moves away from the ski 1 and in the direction 98 when the heel returns on the ski 1, as shown in Figure 5; the end zones 64 and 65 play the role of provisional hinge pins of the boot 2 with respect to the ski 1; the

  dissociation of the two axes 3 and 17 then leads to a

  sliding of the cross member 27 on the upper face.

58 of the protrusion 54 and a person skilled in the art easily understands that by giving the face 5Es an appropriate shape, creating a predetermined cam effect, it can thus be

  at the front protrusion 54 of the shoe 2 in a predetermined manner, proportional or non-proportional, the torque applied by the energizing means 47 to the stirrup 24, with reference to the axis 17, in the form of a pair of reminder which is exerted around axis 3 and which can be

  predetermine the evolution according to the angular position

  shoe 2 relative to the ski 1; the choice

  the shape to be given to the face 58 according to this evolution.

  predetermined, freely chosen, is the domain of

  normal skills of a person skilled in the art.

  To remove, the user brings the shoe flat on the ski 1, which brings the stirrup 24 in its position shown in Figure 1; then, from

  tip of the stick and as shown in Figure 6, the use of

  The driver applies a thrust in direction 48 to the spacer 33, which frees the face 58 from the action of the cross member 27 and allows the clearance of the end zones 64 and 65 of

  the rod 63, vis-à-vis the two grooves 42 and 43 of the chai

  his 34 and 35 by an upward movement of the shoe

2 compared to the ski 1.

  The embodiment of FIG. 7 is completely identical to that of FIGS. 1 to 6, with

  the exception of the shape of the singing of articula-

  the front protrusion of the boot relative to the ski; therefore, we find in Figure 7 the same references as in Figures 1 to 6 to designate elements

identical or similar.

  More precisely, while the songs 40 and 41 of the chairs 34 and 35 present upwardly a

  flat shape, substantially horizontal, both in

  than in front of Gorges 42 and 43 in the case of

  embodiment illustrated in FIGS. 1 to 6, this

  tion is kept in front of each gorae such as

  42 in the case of the embodiment shown in FIG.

  re 7; in fact, in the case of the embodiment of FIG. 7, the planar vertical face such as 45 delimiting rearwardly each groove such as 42 is connected upwardly to an area such as 68 ascending towards the rear of the edge such as 40 of the chair such as 34; this zone 68 is for example plane, perpendicular to the median longitudinal plane 4 of the ski 1, in the case of the example

  non-limiting example shown in Figure 7; both areas

  the 68 of the songs 40 and 41 of the chairs 34 and 35 are

  intended to replace bosses such as 66, ab-

  in this embodiment, to facilitate an automatic boot of the ski, that is to say a footwear using a tilting of the stirrup 24 in the direction 48 by action of the front zone of the face 55 of the protrusion 54 of the boot on the crossbar 27 of the stirrup 24; it is easy to conceive that when donning, since the user has thus pushed the cross 27 sufficiently far forward for the end zones 64 and 65 of the rod 63 of the anterior projection 54 of the shoe 2 are placed above and immediately ahead of the respective upper ends such as 69 areas such as 68 songs 40 and 41 chairs 34 and 35, it is sufficient to let the shoe 2 freely down to the ski, the areas such as 68 songs 40 and 41 chairs 34 and 35 behaving as guide ramps of the end zones 64 and 65 of the rod 63 inwardly of the grooves 42 and 43, respectively; as and when the shoe 2 down to the ski 1, the areas such as 68 ramp ramp to the entire shoe 2 a forward movement relative to the ski 1, fi although the area front of the face 55 continues to progressively push forward the crossbar 27,

  tilt the stirrup 24 until the crossbar 27 is

  eg to the action of this anterior zone in narvenant the connection of the latter with the upper face 58 of

  projection 54, immediately before the fall of the ex-

  tremes 64 and 65 of the rod 63 in the grooves 42 and 43 of the chairs 34 and 35; when the end zones 64 and 65 of the rod 63 coaxially support inside these grooves 42 and 43, the assembly formed by the boot 2, the ski 1 and the fastener 5 occupies the illustrated position

  in Figure 1; during skiing and in skiing

  the functioning of this variant of

  fixing 5 is in all respects identical to that

  which has been described with reference to FIGS. 1 to 6.

  The embodiment of the binding according to the invention 105 which is illustrated in FIG.

  great analogies with the one illustrated in the last

  7 and which has just been described as a supplement

  description of Figures 1 to 6, so that we find

  identical, or with the modifications that will

  be described now, under the same incremental

  100, the elements described with reference to the

Figure 7.

  An essential difference between

  105 illustrated in Figure 8 and the attachment 5 illustrated in Figure 5 is that the maintenance of the

  protrusion 154 154 of the shoe 102 in articulated support

  releasably abutting around the axis 103 in the grooves such that 142 such songs as 140 chairs 134 134 of the ski 101, when the latter is shod, does not result from the support of a cross equivalent to the crossbar 27, absent in the case of this embodiment, on the upper face 158 of the anterior projection 154 of the shoe 102, which face 158 has in the case of this embodiment an indifferent form since it is clean to avoid any contact with the spacer

133 of the stirrup 124.

  In the case of this embodiment, each

  one of the branches such as 125 of stirrup 124 is

  rearward, of a respective notch such as 170

  sufficiently flared backwards and downwards to de-

  totally guarantee a virtual coaxial extension of

  such as 142 songs such as 140 chairs

  134 in the position of the stirrup 124 illustrated in FIG. 8 as well as in any position of this stirrup 124 angularly offset, in the direction 148, with respect to

  this position; upwards, each notch 170 is delimited

  fitted by a face such as 171 ascending backward in the position illustrated in Figure 8, that is to say facing downwards and backwards; in this embodiment, the face such as 171, perpendicular to the

  median longitudinal plane of the ski, is flat but

  It would also be possible to present other shapes, chosen according to the evolution that one wishes to give to the restoring torque applied to the boot 102 as a function of the angular position of the latter, about the axis 103, with respect to the ski 101 as it will appear further; the face 171 has a clean surface state to facilitate

a slip.

  Indeed, each face such as 171 is intended to constitute a sliding support ramp, towards

  back and down, of the respectively

  corresponding to 125 of the stirrup 124 on a bar 163 integral with the anterior projection 154 of the shoe 102 as has been said about the rod 63, that this

barrette 163 replaces.

  More specifically, the strip 163, which is rectilinear

  , is partially embedded in the anterior projection 154 of the shoe 102 in an orientation such that it is perpendicular to the median longitudinal plane

  ski when the latter is fitted, and formally

  port to the two lateral faces such as 156 of the anterior projection 154 of the shoe 102 a projection over a distance greater than the thickness of each of the chairs such as 134, measured parallel to the axis 103, so as to form a projection by relative to each of these chairs such as 134 in the sense of a distance from the median longitudinal plane of the ski, and thus engage in the notches such as branches 170 such

than 125 of the stirrup 124.

  The plate 163 has a mean plane 172 disposed vertically when the boot rests flat on the ski as illustrated in FIG. 8, and is delimited respectively towards the front and towards the rear by plane faces 173, 174 parallel to the plane 172 relative to which they are placed symmetrically one of the other; downwards and upwards, with reference to the position illustrated in FIG. 8, the plate 163 is delimited by semicylindrical faces, respectively and 176, the first of which is of revolution about an axis which is confuses with the common axis 103 such gorges

  that 142 songs such as 140 chairs 134, for

  the role of a trunnion engaged in these throats and

  the guide of the shoe 102 to the rotation about the axis 103 relative to the ski 101 when the latter

  is shod, as it has been said from pins 64 and 65 de-

  finished by the rod 63; the second 176 of these hemi-

  cylindrical is itself of revolution about an axis 177 parallel to the axis 103 and disposed above it

  last in the position shown in Figure 8; Cha-

  one of the upper faces such as 171 notches such as 170 branches such as 125 of the stirrup 124 is sliding downwardly on this face 176

  of the bar 163 when the ski is shod.

  Those skilled in the art readily understand that the cooperation between the hemicylindrical upper face 176 of the bar 163 and each of the ramp faces such as 171 is in every respect analogous to the cooperation between the crossbar 27 of the stirrup 24 and the upper face.

  58 of the anterior projection 54 of the shoe 2.

  To ensure the guidance of the shoe 102 to the rotation about the axis 103 relative to the ski 1, each notch such as aue 142 is open not only upwards, but also to the front as shown in Figure 8 o it is noted that, if we find a plane and vertical face such as 145 delimiting the groove such as 142 to the rear, this groove such as 142 is also delimited by a bottom face such as 144 which corresponds to the face 44 with the exception that its angular development, with reference to the axis 103, is limited to 90; forward, this face such

  that 144 connects directly to a horizontal surface su-

  such as 178 of the song such as 140 of the chair such as 134; the support of each ramp surface such as 171 on the face 176 of the wafer 163 ensures the maintenance of the wafer 163 resting by its face 175 against the bottom face such as 144 of each such groove 142; naturally, the face 175 of the bar 163 has substantially the same diameter as the bottom faces such as 142 grooves 144 of the chairs such as 134. However, according to a variant shown schematically in phantom in Figure 8, each of the faces 175, 176 could be replaced, in its function, by a cylindrical face of revolution respectively about the axis 103 or about the axis 177, with an unchanged diameter; then, each of the faces 175 and 176 would constitute the peripheral face of a respective rod 179, 180, forming

  trustee, jointly and severally

  axis 103 or along the axis 177 in the projection

  154 of the boot 102, in the manner of Tiae 63.

  It can be seen that in the case of this embodiment, a ramp such as 168 corres-

  laying at all points on ramp 68 and, like this

  nière, ascending backward from the face such that 145 of each groove such as 142; naturally, each ramp such as 168 could be replaced, in its guiding function of the boot during fitting,

  by a boss in any point comparable to the boss 66.

  The embodiment of FIGS. 9 and 10 differs exclusively from the embodiment of FIGS. 1 to 6 in that the grooves carried by the chairs integral with the ski and the journals carried by the

  anterior projection of the shoe are replaced

  and by a groove carried by the protrusion of the boot, having the shape of an open hook towards the

down in a manner known per se.

  As a result, we find in Figures 9 and 10,

  under the same references, the elements described in

  this in Figures 1 to 6, with the exception of grooves 42 and 43

  chairs 34 and 35 and rod 63 defining the

  chills through its end zones 64 and 65; however, there is the hinge pin 3 of the anterior projection 54 of the boot 2 on the chairs 34 and 35 of the ski 1,

  in the position already described with respect to the axis 17 of Ar-

  ticulation of branches such as 25 of stirrup 24 on

  the ski 1 and relative to the crossbar 27 connecting rigidly

  parallel to axis 3, the two branches

than 25 of the stirrup 24.

  In the case of this embodiment, the

  two chairs 34, 35 are connected in solidarity, followed by

  the axis 3, by a rod 81 forming a trunnion, laauelle

  has a cylindrical peripheral face 84 of revolution

  around axis 3; additionally, the face 55 of the projection 54 of the shoe 2 has, close to its connection with the groove 11 of the sole 10 of the shoe 102, a groove 82 open downwards if one refers to the illustrated position in Figure 9, that is to say in the direction of a distance relative to the face 58 and relative to the cross 27 when the latter cooperate as shown in Figure 9; this groove 82 is delimited upwards by a semicylindrical bottom face 83 of revolution about an axis 62 defined as in the case of the embodiment described

  with reference to FIGS. 1 to 6, with a sensing diameter

  equal to that of the face 84 of the rod 81; rearward and forward, the face 83 is connected downwardly to flat faces 85, 86 mutually parallel, facing each other and connecting the face 83 to the

face 55 of the protrusion 54.

  The operation of this binding is in

  any point similar to that of the fixation described in

  1 to 9, in particular with regard to

footwear and heaving.

  Naturally, the modes of implementation of the invention which have just been described are only non-limiting examples, and a person skilled in the art can design other embodiments that are not outgoing.

  not within the scope of the present invention.

  In particular, instead of cooperating with a

  anterior projection of the shoe, the stirrup of the

  tion can cooperate directly with the

  top of this shoe, suitably shaped for this purpose; likewise, instead of being located behind the removable axis of articulation of the boot on the ski and under this axis, the permanent hinge axis of the stirrup on the ski can be positioned differently when the relative positioning of these two axes, taking into account the shape and relative positioning of the means ensuring the support of the stirrup on the projection or the end

  front of the shoe, will be suitable to avoid any risk

  that of buttressing under normal conditions of use

  fixing, as is easily conceivable by a person skilled in the art; the skilled person can make the necessary adaptations to the provisions just described without departing from the scope of the

present invention.

Claims (10)

  1. A binding for cross-country skiing intended to cooperate with an anterior zone (54, 154) of a shoe (2, 102) and comprising for this purpose means (34, 35, 63, 134, 163, 81, 82 ) for releasably supporting said zone (54, 154) with respect to a ski (1, 101), defining an axis (3, 103) of articulation of said zone (54, 154) with respect to the ski (1, 101), a stirrup (24, 124) having two branches (25, 26, 125) capable of laterally running along said   zone (54, 154) respectively on either side of this   ci, means (19, 119) of permanent articulation of the branches (25, 26, 125) with respect to the ski (1, 101), around a same axis (17, 117) situated in the same city of said zone   (54, 154) of the shoe that said shaft (3, 103) of   of said zone (54, 154) relative to the ski (1,   101), means (27, 58, 163, 171) for releasably   said branches (25, 26, 125) on said zone (54, 154),   located opposite said axes (3, 17, 103, 117) by   to it, and means of energy (47) for   apply to said stirrup (24, 124) an elastic request   that of rotation about the axis (17, 117) of articulation of the branches (25, 26, 125) with respect to a ski (1, 101), in a direction (68, 168) determined to support said means (27, 58, 163, 171) for releasably supporting said branches (25, 26, 125) on said zone (54, 154) and for supporting said means (34, 35, 63, 134, 163, 81, 82 ) of said zone relative to the ski (1, 101), as well as support of the shoe (2, 102) flat on the ski (1, 101),   characterized in that the axis (3, 103) of   ticulation of the anterior zone (54, 154) of the shoe   (2, 102) relative to the ski (1, 101) is shifted by   port to the axis (17, 117) of articulation of the branches (25, 26, 125) relative to the ski (1, 101) and parallel to this axis (17, 117), and in that the toyens (27, 117) , 58, 163, 171) for releasably supporting the limbs (25, 26, 125) on the anterior zone (54, 154) of the boot (2, 102) allow relative sliding. 2. Fastening according to claim 1, characterized in that the axis (3, 103) of articulation of said zone (54, 154) relative to the ski (1, 101) is shifted rearwardly relative to the articulation axis (17, 117) of the branches (25, 26, 125) relative to the skiing (1, 101).   3. Fastening according to any one of the claims   1 and 2, characterized in that, with reference to a position   support of the toyens (27, 58, 163, 171) for releasably supporting said branches   (25, 26, 125) on said zone (54, 154) for supporting the means (34, 35, 63, 134, 163, 81, 82) of said zone (54, 154) relative to the ski ( 1, 101) and support of the shoe (2, 102) flat on the ski (1,   101), the axis (3, 103) of articulation of said zone (54, 154) with respect to   ski-wear (1, 101) is located at an intermediate level between the respective levels of the hinge axis (17, 117) of the branches (25, 26, 125) relative to the ski (1, 101) and means (27, 58, 163, 171)   releasably supporting said legs (25, 125) on said area (54, 154).   4. Fastening according to any one of the claims   1 to 3, characterized in that the rvyens (34, 35, 63, 134, 163, 81, 82) of removable support of said zone (54, 154) relative to a ski (1, 101) having on the ski (1, 101), along said axis (3, 101) of articulation of said zone (54, 154) with respect to a ski (1,   101), at the throat a groove (42, 43, 142) open upwards and sus-   able to receive coaxially, armibly, a trunnion   (64, 65, 175) of said zone (54, 154).   5. Fixing according to any one of   Claims 1 to 3, characterized in that the means   (34, 35, 63, 134, 163, 81, 82) movable support of said zone (54,   154) with respect to a ski (1, 101) have on the ski (1, 101) followed by   said articulation axis (3, 103) of said zone (54, 154) with respect to a ski (1, 101), two grooves (42, 43, 142) open upwards and capable of receiving coaxially, anovible way,   two pins (64, 65, 175) coaxial with said zone (54, 154).   6. Fixing according to any of the   claims 4 and 5, characterized in that it comprises, immediately behind the or each groove (42, 43, 142), an access ramp (68, i68) descending towards the front and towards said groove ( 42, 43, 142) for guiding said associated trunnion (64, 65, 175) to a coaxial bearing position of said trunnion (64, 65, 175) in said throat (42, 43, 142) when donning.   7. Fixing according to any one of   claims 1 to 3, said zone (54) presenting towards the   a hook shape (82) open downwards, characterized by   in that the means (34, 35, 63, 134, 163, 81, 82) for releasably supporting said zone (54, 154) relative to a ski (1, 101) comprising on the ski (1, 101) along said articulation axis (3, 101) of said zone (54, 154) relative to a ski (1, 101), a trunnion (81) on which said hook shape (82) can engage in a removable manner.   8. Fixing according to any of the   Claims 1 to 7, characterized in that the means (27, 58, 163, 171) for releasably supporting the limbs (25, 26, 125) on the anterior zone (54, 154) of the shoe (2, 102) comprise a rigid cross member (27) integral with said   branches (25, 26) and connecting them with each other   to said axes (3, 17), and a ramp (58) for sliding support for said crossbar (27), arranged on said   zone (54) and facing upwards in a position of   the shoe (2) flat on the ski (1).   9. Fixing according to one of the respec-   Claims 1 to 7, characterized in that the means (27, 58, 163, 171) for releasably supporting the limbs (25, 26,) on the anterior zone (54, 154) of the shoe (2, 102) comprise at least one trunnion (176) secured to said zone (154) and parallel to said axes (103, 117), and a ramp (171) sliding on said trunnion (176) arranged on said branches (125) and facing the bottom in a bearing position of the means (163, 171) for releasably supporting said branches (125) on said zone (154), for supporting the means (134, 163) of said zone (154) relative to the ski (101) and shoe support (102) flat on the ski (101).   10. Fastening according to any of the   Claims 1 to 7, characterized in that the means (27, 58, 163, 171) for releasably supporting the limbs (25, 26,) on the anterior zone (54, 154) of the shoe (2, 102) comprise two coaxial journals (175) integral with said zone (154), respectively on either side thereof, and two ramps (171) for sliding support on these journals (175), respectively arranged on one and the other of said branches (125) and facing downwards in a bearing position of the means (163, 171) for releasably supporting said branches (125) on said zone (154) for supporting the means (134, 163) of said zone (154) relative to the ski (101) and of support of the boot (102) to flat on the ski (101).