FR2671734A1 - SKI BRAKE. - Google Patents

Abstract

Ski brake comprising two pivoting branches on either side of the edges of the ski. According to the invention, it comprises at least one piece (10, 18, 24, 26, 30, 36, 42, 47) forming a lock, intended to act on at least one branch (8, 80), an extension (13, 15) of a branch, or a member (14) for controlling a branch in order, once the boot is removed from the assembly, the binding branch thus normally released, to hold the latter in an inactive position while the rod of the element forms a certain angle with the longitudinal axis of the ski following a pivoting parallel to the upper face of the ski. Application to fitting-out of downhill skis comprising a boot binding of which at least one part is displaceable relative to the upper face of the ski.

Description

I

SKI BRAKE

  The present invention relates to a ski brake.

  It is traditional to equip alpine skis with a ski brake mechanism. Alpine skis are equipped with safety bindings intended to link the ski with a user's shoe. The principle of a safety binding is to allow, when a dangerous constraint is exerted on the skier's leg, particularly under the action of a twisting movement, or of falling forward, to separate the shoe and the ski Previously, the ankle of the skier was permanently connected to the ski by a so-called safety lanyard, which after heaving,

  ensured the loose retention of the ski vis-à-vis the skier's leg.

  It turned out that these safety straps increased the time of putting on and off the skis, requiring the skier to perform a precise maneuver, which is not always easy in winter conditions, and with gloves in Moreover, in the case of certain falls, the fact that the ski remains restrained in the leg, has a disadvantage because after heaving, the ski is subject to uncontrolled movements during which it can come crashing into the body of the skier,

  in a dangerous way, especially when the ski hits the skier's head.

  Consequently, it has been imagined to make ski brakes, that is to say a system associated with the ski, or with the binding, which is retracted when the skier's boot is in a position of attachment to the ski, and which passes in the active position, that is to say prevents the slipping of a

  free ski on the snow as soon as the skier's boot has left the binding.

  For this purpose, a ski brake system generally comprises two branches disposed on either side of a ski, capable of pivoting between a position in which they are parallel to the ski base plane, and above the sole thereof, and a position in which they are tilted down, and protrude from the plane of the sole,

  thus constituting an obstacle to the free sliding of the ski on the snow.

  The two branches of a ski brake can be secured to one

  on the other hand in the manner of a stirrup, or these branches may be inde-

  of each other, each associated with a spring element

  tending to tilt them downwards Furthermore, this system can

  be retracted inwards, above the upper face of the ski, to avoid any inconvenience when skiing, especially during a

  edge on a steep slope of hard snow.

  There are certain types of bindings with which the use of a traditional ski brake system is a problem.

  fasteners in which the fastening support element, which also carries

  the ski brake is mounted laterally displaceable, for example -5 following a pivoting movement, vis-à-vis the longitudinal axis of the ski Tel is particularly the case of the fasteners comprising a pivoting heel, or fasteners in which the two parts of the attachment namely stop and heel are mounted on a plate, itself pivoting about a central axis perpendicular to the plane of the face

superior of the ski.

  In such a case indeed, insofar as the release of the shoe is effected while the fixing support member is no longer aligned vis-à-vis the ski, at least one of the two branches of the brake

  ski can not play freely since it is hampered by the upper surface

ski.

  It is therefore detrimental to the proper functioning of the ski brake system and to the reliability of it. The object of the invention is to provide a ski brake, intended to be mounted on an element which, equipped with least part of the fastening members of a shoe, constituted by a

  stop and / or heel, is movable parallel to the upper face

  The ski brake is of the type comprising two branches pivoting each by a spring effect between a retracted position where it is practically practicable. parallel to the base of the ski and an active position in which it protrudes from the plane of the sole of the ski, each leg having an actuated extension

  from the sole of the shoe for its holding in stance position

  The object of the invention is to provide a ski brake, in which the release of the branches in the active position can be performed only when they are able to pivot freely to project from the sole of the ski This brake to ski is therefore intended to equip a fixing support element, capable of a momentary lateral displacement when the shoe is released, but with a return

  in position of alignment with the ski as soon as the end of the dechaus-

wise.

  For this purpose, the ski brake it concerns comprises at least one piece forming a latch, intended to act on at least one branch, an extension of a branch, or a control member of a branch to maintain it in the inactive position once the boot extracted from the binding therefore the branch released, as long as the axis of the element forms a certain angle with the longitudinal axis of the ski, as a result of pivoting parallel to the upper face of the ski . Under these conditions, during the movement of the fastening support element vis-a-vis the ski, the two branches, or a branch only, which is not likely to rotate freely, are held in the retracted position, although the shoe no longer acts to ensure their maintenance in this position As soon as the element is back in alignment with the ski, the branches of the ski brake can both play freely and switch to their active ski braking position, if the shoe

left this one.

  According to a first embodiment of this ski brake, the bolt piece is mounted on the ski and comprises a wing substantially parallel to the upper plane of the ski against the lower face of which at least one branch, an extension of a branch or a control member of a branch is intended to come to bear when the axis

  of the element forms a certain angle with the longitudinal axis of the ski.

  This latch piece can be attached to the upper face

  of the ski, or an integral part thereof, the wing against which comes to bear the end of a branch, or an extension thereof or a branch control member being shaped,

  as well as branches and their possible extensions, to allow

  be a free pivoting of the branches when the fixing support element is aligned with the ski, and ensure the retention of at least one of the branches when the longitudinal axis of this element forms a certain angle with the longitudinal axis of the ski the respective conformations of the latch piece and the branches, in one piece or in two pieces, it is possible to retain either one of the two branches selectively,

either to retain the two branches.

  The latch piece can also be mounted movable with respect to the ski, for example sliding longitudinally thereof, or pivoting, the latch piece being actuated by a ramp portion, formed on the fixing support member, in order to be kept in the retracted position when the fixing support element is aligned with the ski, and to move into the active position of retaining at least one of the two arms of the brake, as soon as the support element of

  fixture forms a certain angle with the longitudinal axis of the ski.

  According to another possibility, this attachment comprises two fingers oriented transversely to the ski, in the zone of the branches, protruding on both sides of the songs of the ski, above them, and of a length such that when the fixing support element is aligned with the ski, the branches can pivot freely from their retracted position to their active position, and when the fixing support member forms an angle with the longitudinal axis of the ski, the one of the fingers ensures the retention of the ski brake limb, whose movement of

  pivoting would be hindered by the body of the ski.

  Anyway, the invention will be well understood using the

  description which follows, with reference to the attached schematic drawing

  noting, as non-limiting examples, several embodiments of this ski brake:

  Figure I is a very schematic side view of the central part of

  tral of a ski equipped with a plate for mounting the bindings of the shoe; Figures 2 and 3 are two partial and enlarged views of the ski brake of Figure 1, respectively in longitudinal section and in FIG.

  top view partially in section, in the alignment position of the element

  mounting bracket and ski; Figures 4 and 5 are two views respectively of side and top with pivoting of the support element vis-à-vis the ski;

  Figures 6 and 7 are two views from above of a variant of

  the device of FIG. 2 respectively in the alignment position of the fixing support element with the ski and in an inclined position; Figures 8 and 9 are two views of another variant of execution

  of the device of FIG. 2 respectively in position of alignment of the element

  mounting bracket with the ski and in inclined position vis-à-vis thereof; Figure 10 is a partial longitudinal sectional view of another embodiment of this ski brake, wherein the bolt piece is longitudinally sliding to the ski; Figures 11 and 12 are two top views of the figure device, respectively in the alignment position of the support element fixing with the ski, and in an inclined position vis-à-vis the ski Figure 13 is a view similar to Figure 11 wherein the latch piece is pivotable about an axis parallel to the ski's top plane; Figure 14 is a top view of the device of Figure 13; Figure 15 is a view similar to Figure 10 wherein the latch piece is pivotable about an axis perpendicular to the upper plane of the ski; Figure 16 is a top view of this device

  Figures 17 and 18 are two views in longitudinal section corresponding to

  two devices constituting variants of the device of FIG. 2, in which the fin is provided directly in the section

ski.

  Figures 19 and 20 are two views from above of another device for retaining the branches of a ski brake; Figure 21 is a longitudinal sectional view of a device similar to that of Figure 2, mounted on a heel pivoting about an axis perpendicular to the ski plane; Figures 22 and 23 show, respectively in side view and from above, a device constituting a variant of the device of figure

  2 ensuring the retention of branches by action on the pedal of action-

of these.

  FIG. 1 represents the central part of a ski 2 on which is pivotally mounted about an axis 3, perpendicular to the ski plane, a plate 4. This plate 4 is equipped with elastic means, not represented in the drawing, intended to ensure its preferential maintenance in alignment with the ski, in normal conditions of use On the plate 4 are mounted a stop 5 and a heel 6 intended to ensure the retention of a shoe 7 of the skier A plate 4 is associated with a ski brake comprising in particular two branches 8 and 80 capable of pivoting between a retracted position shown in Figure 1, and an active position shown in Figure 4 in which the branch 8 protrudes from the lower plane of the ski and is likely to brake it on the snow The two branches 8 and 80 are pivotally mounted in bearings 9, and subjected to the action of resilient elements ensuring their tilting to the active position The pivoting assembly of

  branches 8, 80 is made in known manner, and these branches are susceptible

  It is not possible to retract the two sides of the ski in such a way that they are not known. In the embodiment shown in FIGS. 2 to 5, the ski is equipped with a part 10 forming a latch, having a generally S-shaped profile, one wing 12 of which is fixed on the upper face of the ski, and one of which Another wing It is turned backwards In this embodiment, each branch 8, 80 is articulated in a bearing 9, and is provided with an extension 13 to the front, the extensions 13 of the two branches, independent l one of the other, being associated with a pedal 14 which, when actuated by the shoe 7 of the skier, acts on the extensions of the branches to maintain them in

  position retracted as shown in Figures 1 and 2.

  As shown in FIG. 3, the ends of the two prolon-

  13 of the branches are spaced apart from one another in a direction transverse to the ski, and the latch piece, centered on the longitudinal axis of the ski, has a width less than the spacing between the ends of the extensions 15 two branches 8, as is clear from Figures 3 and 5 Thus, when the plate 4 is aligned with the ski, as shown in Figure 3, the two branches 8, 80 can play freely that is to say rotate when the shoe no longer exerts any action on the pedal 14 During a heaving with torsion resulting in an angulation of the plate 4 relative to the ski, the longitudinal axis of the plate being no longer contained in the plane longitudinal median of the ski, but forming an angle with it, the pedal 14 being released, the end 15 of an extension 13 corresponding to the branch which is above the upper face of the ski, comes to bear on the underside of the wing 11 In this way, as shown in FIG. 4, the branch 8 situated outside the ski being free, can pivot towards the active position, while the branch 80 remains in the retracted position as long as the axis of the support element of fixation

  did not return in alignment with the ski axis.

  This arrangement therefore makes it possible to perform a delayed release of one of the two branches, so that the operation of the ski brake is not disturbed by the instantaneous pivoting movement.

  of the plate relative to the ski during the heaving movement.

  Figures 6 and 7 show an alternative embodiment of

  FIGS. 2 to 5, in which the two branches are independently

  the ends 16 of their extension 13 are parallel to the longitudinal axis 17 of the plate 4, and spaced apart from one another, the latch piece 18 being centered on the longitudinal axis of the ski, and having a width greater than the spacing between the ends 16 of the extensions of the two branches The upper wing of the piece 18 forming a latch comprises two symmetrical recesses 19

  relative to the longitudinal median plane of the ski, and arranged at a distance from

  corresponding to the distance between the extremities 16

  as free passage of these ends when the longitudinal axis 17 of the plate 4 is located in the longitudinal median plane of the ski as shown in Figure 6 In this case, the two branches can pass

  immediately from the retracted position to the active position.

  If the plate 4 pivots with respect to the ski, as shown in FIG. 7, the ends 16 of the extensions 13 of the two branches 4 engage under the wing of the piece 18 forming a lock, preventing any pivoting of the two branches. is that when the plate 4 is returned to the alignment position with the ski that the ends 16 can pass through the recesses 19, the two branches will be released

  and will be able to move from their retracted position to their active position.

  Figures 8 and 9 show another variant of this arrangement.

  in which the same elements are designated by the same references.

  In this case, the extensions of the two branches 8, 80 are integral with each other, and their central portion forms a U 22 whose core 23 is perpendicular to the longitudinal axis 17 of the plate La. 24 forming a latch is centered on the longitudinal axis of the ski, and has a width greater than the width of the core of the U. This part 24 comprises in its upper flange, a central recess 25 of width at least equal to the width In this way, when the longitudinal axis 17 of the plate 4 is located in the longitudinal median plane of the ski, as shown in FIG. 8, the two arms 8 of the brake can play freely, the ends of their extensions freely passing through the recess 25. On the contrary, when the axis 17 of the plate 4 forms an angle with the longitudinal median plane of the ski, as shown in FIG. 9,

  the core 23 of the U-shaped portion 22 bears against the lower face

  In this way, the ski brake can not be triggered as long as the plate 4 is not locked.

  returned to the realignment position on the ski.

  In the embodiment shown in FIGS. 10 to 12, the lock piece 26 is slidably mounted axially on the ski, and subjected to the action of a compression spring 27 tending to move it rearwardly. that is to say in a position in which its flange 28 is capable of locking the end 15 of the extension of each branch The rear edge of the lower part of the piece 26, bears on a profiled edge 29 forming a ramp that includes the plate 4 The ramp 29 is shaped, as shown in FIGS. 11 and 12, to maintain the front position, that is to say in the retracted position, as shown in FIGS. 10 and 11, of the lock 26 when the axle longitudinal 17 of the plate 4 is in the longitudinal median plane 20 of the ski, and to allow the displacement of the piece 26 forming a latch under the expansion action of the spring 27, as shown in FIG. 12, when the axis 17 of the plate 4 forms a certain angle

with the axis of the ski.

  In this case again, the branches 8, 80 of the brake can pivot freely when the plate is in alignment with the ski, while at least one of the branches is locked in its movement by the flange 28 of the lock 26, when the plate makes an angle with the median plane

  longitudinal of the ski, and that the shoe of the skier is released.

  FIGS. 13 and 14 show an alternative embodiment of this ski brake in which the same elements are designated by

  the same references as before.

  In this embodiment, the latch piece 30 is pivotally mounted about an axis 32 transverse and parallel to the ski plane, and subjected to the action of a torsion spring 33 holding its upper end 34, forming a beak, in the retracted position vis-à-vis the ends of the extensions of the branches 8, 80 The locking member 30 bears against the front part, forming a ramp 35, of the recess that includes the plate As shown in FIGS. and 14, this ramp 35 is shaped such that, when the axis 17 of the plate 4 is contained in the longitudinal median plane 20 of the ski, the rocking latch is in the retracted position, as shown in FIG. 13, while when the plate 4 forms a certain angle with the ski axis, as shown in phantom in FIG. 14, the ramp 35 acts on the latch 30 to cause it to tilt towards

  the back, position in which its spout 34 ensures the restraint of the extremities

  extend the branches 8, 80 of the ski brake.

  In the embodiment shown in Figures 15 and 16, the piece 36 forming a latch is oblong and pivotally mounted

  freely around an axis 37 perpendicular to the upper plane of the ski.

  The piece forming a latch is centered on the longitudinal axis of the ski, and has a width less than the spacing between the ends 15 of the extensions 13 of the branches 8, 80 The piece 36 forming a latch bears against a ramp 38 formed in a edge of the plate 4, this ramp comprising control slopes shaped so that when the axis 17 of the plate 4 is located in the longitudinal median plane 20 of the ski, the latch 36 is aligned with the axis of the ski, and allow free passage of the ends 15 of the extensions of the branches 8, 80, whereas when the axis 17 forms an angle with the axis of the ski, the latch 36 has pivoted thus preventing, as shown in FIG.

  mixed lines in Figure 16, the pivoting of the branch 80 of the brake.

  In this case again, only when the plate is perfectly

  realigned with the ski that it will be possible to the two branches of the

brake to move to the active position.

  FIGS. 17 and 18 correspond to two variant embodiments of the device of FIG. 2. In this case, the piece forming a lock is not attached to the ski, but forms an integral part of the structure of the latter. In the form of FIG. execution shown in Figure 17, the wing 39 ensuring the retention of the ends of the branches is an integral part of the ski and protrudes from the upper plane thereof, while in the embodiment shown in Figure 18, the wing 40 end restraints

  branches are arranged inside the ski's thickness.

  In the embodiment shown in Figures 19 and 20, the ski is equipped with two fingers 42, oriented transversely to the ski and disposed at the two arms 8, 80 of the brake The ends of these two fingers each exceed one of the ski edges of a value such that when the fixing support element, in this case the plate 4, is aligned with the ski that is to say when its axis 17 is located in the longitudinal median plane of ski, each branch can pivot freely beyond the end of the corresponding finger, as shown in Figure 19 In contrast, when the axis 17 of the plate forms an angle with the longitudinal median plane of the ski, one of Finger 42 forms a retaining element for the branch 8 which is above it, as shown in FIG. 20 When the plate 4 returns to the alignment position on the ski, this branch 8 is released by the finger 42. FIG. 21 represents an execution variant in lacquer lle a piece 10 forming a latch, similar to the part 10 shown in Figure 2, that is to say, fixed on the ski body, acts on the ends of the extensions of the branches 8, 80 of a ski brake, mounted on a support member 43 pivoting about an axis 44 perpendicular to the ski plane, this element 43 being intended for the sole mounting of a heel

  fixing the back of the shoe.

  In the embodiment shown in Figures 22 and 23 wherein the same elements are designated by the same references, the rear stop is itself pivotable relative to the plate and the brake control pedal connected to the stop, the forming a latch acting not on the branches of the brake or on the extensions thereof, but on the pedal 14 For this purpose, it is provided in a portion 46 of the plate groove 47 in which is intended to come s' engage the front end 48 of the pedal 14 when the element bearing the heel forms an angle with the axis of the plate This groove 47 is delimited by an upper wing having a central recess 49 which allows, when the element or plate bearing the heel is aligned with the ski and with the plate, let the pedal freely, as shown in solid lines in Figure 23 This same figure 23 shows, in phantom, a position in which the plate 46 forms an angle with the ski and wherein the heel has pivoted relative to the plate in a reverse direction, so that the front end 48 of the pedal 14 is in the retaining position therein groove 47 When the plate 46 and the heel return to the alignment position with the ski, the ski brake can be released, the pedal

  14 being no longer retained by the groove 47 since it can pass through the

  49 of this groove.

  As is apparent from the foregoing, the invention brings a great improvement to the existing technique, providing a ski brake mounted on a movable element relative to the upper plane of the ski, and whose triggering is controlled so that the branches of the brake can only be released if they do not meet

  no obstacle constituted by the ski or a part associated therewith.

  It goes without saying that the invention is not limited to the embodiments of this device described above as examples.

  it encompasses all the variants.

Claims (12)

  1 ski brake, intended to be mounted on an element which, equipped with at least a portion of the fastening members of a boot, constituted by a stop and / or heel, is movable parallel to the upper face of the ski during of a release movement of the shoe vis-à-vis the fastening means thereof, and comprising two branches each pivoting by a spring effect between a retracted position o it is substantially parallel to the ski and a position active in which the ends protrude from the plane of the sole of the ski, each leg having an extension actuated from the   sole of the boot for retention in the retracted position,   in that it comprises at least one piece (10, 18, 24, 26, 30, 36, 42, 47) forming a latch, intended to act on at least one branch (8,   ), an extension (13, 15) of a branch, or a control member (14)   of a branch for, once the shoe extracted from the set therefore the branch-attachment normally released, maintain it in the inactive position, as long as the axis of the element forms a certain angle with the longitudinal axis ski, as a result of parallel pivoting on the upper face of the ski.   2 ski brake according to claim 1, characterized in that the piece (10, 18, 24, 26, 30, 36) forming a latch is mounted on the ski and comprises a flange (11, 28, 34) substantially parallel to the plane ski against the underside of which at least one branch (8), an extension (13, 15) of a branch or a member (14) for controlling a branch is intended to bear when the axis of the element   forms a certain angle with the longitudinal axis of the ski.   Ski brake according to claim 2, characterized in that   that the piece (10) forming a lock is fixed on the ski.   Ski-brake according to Claim 2, characterized in that the bolt-forming part (39, 40) forms an integral part of the structure. ski.   Ski brake according to claim 4, characterized in that the wing (39) against the lower face of which at least one branch, an extension of a branch or a control member of a branch is intended to bear, is arranged above the plane of the face superior of the ski.   6 ski brake according to claim 4, characterized in that the flange (40) against the underside of which at least one branch, an extension of a branch or a control member of a branch   is intended to take support, is arranged in the thickness of the ski.   Ski brake according to any one of claims 1   to 6, characterized in that the two legs (8, 80) are independent of each other, the ends (15) of their extensions (13) are spaced from each other in a direction transverse to the ski, the bolt piece (10) being centered on the longitudinal axis of the ski, and having   a width less than the distance between the ends of the extensions two branches.   Ski brake according to one of claims 1   at 6, characterized in that the two branches (8, 80) are independent of one another, the ends (16) of their extensions (13) are   parallel to the longitudinal axis of the fastening support member, and spaced   each other, the bolt piece (18) being centered on the longitudinal axis of the ski, having a width greater than the spacing between the ends of the branch extensions, and having two symmetrical recesses (19). in relation to the longitudinal median plane   ski, at a distance corresponding to the distance between these two extremes.   mites (16), and allowing their free passage, when the longitudinal axis   of the element (4) is located in the longitudinal median plane of the ski.   Ski brake according to one of claims 1   at 6, characterized in that the extensions of the two branches are integral with each other, and their central part forms a U (22) whose core (23) is perpendicular to the axis of the element ( 4) mounting bracket, the latch piece (24) being centered on the longitudinal axis of the   ski, having a width greater than the width of the soul of the U and   both a central recess (25) of width at least equal to the width of the core of the U, in order to allow the free play of the branches (8), when   the longitudinal axis of the element (4) lies in the longitudinal median plane ski.   Ski brake according to one of the claims   1 to 6, wherein the actuation of the branches to the retracted position   is achieved by means of a pedal (14) operable by means of   shoe sole (7), characterized in that the front portion (48) of the pedal (14) is shaped to bear against the lower face of the wing of the piece (47) forming a latch when the axis of the fastening element (4) forms a certain angle with respect to the longitudinal axis of the ski, the bolt piece having a central recess (49) of width at least equal to that of the front edge of the pedal (14), allowing the free passage thereof when the longitudinal axis of the element (4) is located in the longitudinal median plane. ski.   A ski brake according to claim 2, characterized in that the piece (26) forming a latch is slidably mounted axially on the ski and subjected to the action of a spring (27) tending to move it towards its locking position. extension of the limbs (8), an edge of this latch piece, located on the side opposite the spring (27), bearing on a profiled edge (29), forming a ramp, which comprises the element (4) fixing support, this ramp being shaped to hold the latch part (26) in the retracted position,   when the axis (17) of the element (4) is located in the longitudinal median plane   dinal (20) of the ski, and to allow the displacement of the piece (26) under the action of the spring (27) when the axis of the element (4) forms a certain angle with the axis of the ski.   12 ski brake according to claim 2, characterized in that the piece (30) forming a latch is pivotally mounted about an axis (32) transverse and parallel to the ski plane and subjected, on the one hand, to the action a spring (33) tending to keep it in the retracted position and, on the other hand, the action of a ramp (35), which comprises the element (4) fixing support, tending to tilt it to the locking position of at least one branch, when the axis (17) of the element   (4) forms a certain angle with the longitudinal axis of the ski.   13 ski brake according to claim 2, characterized in that the piece (36) forming a latch is of oblong shape, pivotally mounted about an axis (37) perpendicular to the upper plane of the ski, and intended to cooperate with a ramp ( 38) delimited by an edge of the element (4) fixing support, the respective shapes of the piece (36) forming a latch and the ramp (38) being such that when the axis (17) of the element is located in the longitudinal median plane (20) of the ski the bolt piece is oriented in the same plane and leaves a free passage to the ends of the extensions of the branches (8), which are arranged on both sides of it, while that, when the axis of the element forms a certain angle with the longitudinal axis of the ski, the piece (36) forming a latch is pivoted correspondingly and ensures the retention of the end   extension of one of the branches (8).   14 ski brake according to claim 1, characterized in that it comprises two fingers (42) which, oriented transversely to the ski and arranged at the two branches (8, 80), each protruding from one of the songs of the ski (2) of such a value that, when the axis of the fixing support member is located in the longitudinal median plane (20) of the ski, each leg (8) can pivot freely beyond the end corresponding finger (42), whereas when the axis of the element forms a certain angle with the longitudinal axis of the ski, one of the fingers (42) forms   a stop for the branch (8) which is above him.