Classifications

• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/001—Anti-friction devices
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/081—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with swivel sole-plate
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
  • A63C9/08535—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw
  • A63C9/0855—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw pivoting about a vertical axis
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
  • A63C9/08507—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws
  • A63C9/08521—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws pivoting about a vertical axis, e.g. side release
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
  • A63C9/08535—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw
  • A63C9/08542—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw pivoting about a transversal axis
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
  • A63C9/08557—Details of the release mechanism
  • A63C9/08571—Details of the release mechanism using axis and lever
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C9/00—Ski bindings
  • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
  • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
  • A63C9/08592—Structure or making

Definitions

• the present invention relates to a device for supporting a boot on a ski, which is associated with a safety front stop.
• the vast majority of modern safety ski bindings comprise a rear element for retaining the heel, generally called a heel piece and a front element for retaining the toe of the boot, generally called a toe-stop.
• the heel opens to release the boot from the ski in the event of excessive efforts linked to a stress on the leg in the forward fall.
• the front stop releases the shoe under the effect of excessive lateral forces, linked to a fall in torsion.
• Some front stops also allow the tip of the shoe to escape in the event of a rear fall.
• the front part of the sole does not rest directly on the ski, but on a support plate with a low coefficient of friction, this plate generally being integrated into the plate of mounting the front stop on the ski.
• the backing plate has a lining in anti-friction synthetic material, generally in P.T.F.E. (Polytetrafluorethylene) or a material with similar properties.
• P.T.F.E. Polytetrafluorethylene
• the support plate mobile. This is guided to move in a general transverse direction relative to the ski, so as to follow a trajectory identical to that of the sole, or close to the latter. Appropriate elastic means allow the backing plate to be returned to its normal position, centered on the ski, as soon as the lateral stress exerted by the boot has ceased.
• the sole support plate is carried by a pedal which is integral with the front stop.
• An embodiment of this type is described in particular in . document FR-A-2 k3 ⁇ 59.
• the trajectory of the support plate is therefore dependent on that of the front-stop jaw.
• the support plate will pivot around the same axis as the jaw, that is to say about an axis located in front of the shoe. This is not satisfactory because, in the vast majority of torsional falls, the shoe rotates around an (virtual) axis located between the middle part and the heel of the shoe, for example around an axis corresponding approximately. to that of the shin.
• the support plate is connected to the front stop by means of an elastically deformable connecting member such as a corrugated elastic wire.
• the present invention aims to solve these various problems by proposing a device for supporting a boot on a ski, which is associated with a safety front stop, and in which the sole support plate is movable and can follow a well-defined trajectory, which can be chosen to be identical or very close to that of the sole, the movement of this movable plate being nevertheless governed or controlled by the displacement of the front-stop jaw, but the movable plate nevertheless being able to move freely in an elastic manner and over a short stroke relative to an average position which is imposed on it by the trigger movement of the front stop.
• this device comprises guide means ensuring a movement along a predetermined trajectory, generally transverse to the ski, of a movable sole support plate, the device comprising a link which connects this movable plate to the front stop so that the opening of the latter causes or authorizes the transverse displacement of the movable plate, the connecting member being elastically deformable.
• this connecting member is a flexible tongue.
• the movable plate can pivot laterally around an axis centered on the ski and located under the boot.
• the means which provide the pivoting guide for the movable plate consist of a fixed cylindrical stud which engages in a hole in the support plate.
• these means consist of a fixed rib, with an arcuate outline, which engages in a complementary groove made in the plate.
• the device can advantageously be applied to a front stop of the type with pivoting body carrying the shoe retaining jaws; in this case, according to a preferred embodiment of the invention, this pivoting body is integral with a substantially vertical rod, centered on the ski, and fixed to the elastic connecting member.
• this rod engages in a lumen formed in one of the ends of the flexible tongue, the latter being secured by its other end to the movable plate.
• This arrangement allows a good drive of the support plate by the pivoting body during its release movement, despite the divergence of the two trajectories, the rod being able to slide in the lumen of the flexible tongue. This training remains possible even if the retaining jaws are raised.
• the invention is also applicable to other types of front stops. It can thus be applied to a front stop comprising a pair of jaws articulated on a cross member which is movable transversely; in this case it is this cross which can advantageously be connected to the elastic connecting member.
• Another type of front stop comprises a pair of independent bent jaws which are articulated on a fixed body and each act on a central slide resiliently stressed.
• the support plate with a cam track cooperating with a follower member, the latter then being connected to the slide by the elastic connecting member.
• FIG. 1 is an exploded perspective view of a first embodiment of the invention applied to a front stop with pivoting body;
• - Figure 2 is a bottom view of the movable support plate fitted to this device;
• FIG. 3 is a longitudinal section of the support plate of Figure 2, the section plane being referenced III-III in Figure 2;
• FIG. 5B is a schematic side view, and on a small scale, of the front stop when it is biased in rear fall;
• FIG. 6 is a very schematic top view showing a variant of the guide means of the movable support plate;
• - Figures 7 and 8 are schematic views corresponding to two other possible embodiments of the invention applied to front stops of different type;
• Figure 8A is a partial view corresponding to Figure 8 which illustrates the possibility of offset of the support plate relative to its average position.
• the device shown in Figure 1 comprises a safety front stop 3, of a type known per se, which is carried by a base, or plate, 20 fixed to a ski by means of screws 21. It is a stop with a pivoting body 33 carrying side jaws 31, preferably adjustable in width, so as to adapt to the width of the toe of the shoe.
• the body 33 can pivot laterally, on one side and the other, around a vertical pivot, that is to say perpendicular to the ski, the axis of which is designated 30.
• This body 33 contains a mechanism for safety (not shown) comprising an elastic return system, of known type.
• the support plate 1 is a molded plate of mechanically resistant synthetic material, which, in a well-known manner, is provided at its upper part with a strip 10 of material with a low coefficient of friction, for example PTFE At its rear part , i.e. on the side corresponding to the back of the ski (towards the heel of the 39
• the part 1 1 of the support plate is pierced with a central hole 13. This is intended to engage on a cylindrical stud 25, of corresponding diameter, which forms an integral part of the fixed plate 20.
• the plate 20 In front of the stud 25, the plate 20 has a flat rib 22 which has an arcuate shape, centered towards the rear of the ski.
• a lining 23 with a low coefficient of friction for example in P.T.F.E.
• On the underside of the support plate 1 is provided a clearance corresponding to the rib 22, allowing below the support plate to come to bear on the anti-friction lining 23.
• Thicker parts 1 ⁇ , 15 provided under the plate 1 is positioned respectively at the rear and at the front of the rib 22. As will be seen below, these elements do not interfere with the pivoting of the support plate 1 around the stud 25.
• the plate 1 is fixed to the plate 20 by means of a screw 5.
• the latter has a threaded part of small diameter 51 which is screwed into a tapped hole 26 provided in the stud 25. It has a head 50 of large diameter which is housed in a cylindrical counterbore 12 bordering the hole 13 of the plate I.
• the screw 5 could be replaced by a non-removable link, in particular by a rivet.
• Holes 16 provided in the front part 17 of the plate 1 allow access to the screws 21 (using a screwdriver) for fixing the assembly on the ski.
• FIG. 2 we have designated by the reference 100 the underside of the support plate at its clearance between the rear elements 1 ⁇ and front 1 of greater thickness. It is the zone 100 which bears on the anti-friction lining 23.
• the front projecting element 15 has the general shape of a transverse rib. The latter carries in its central zone an elastically deformable member 6. It is a tongue 62, flat and of rectangular section. It extends longitudinally under the front part 17 of the support plate. Preferably the tongue 62 forms an integral part of the support plate, and comes from molding therewith. At its front end ibre, the tongue 62 has an enlarged head 61 in which is formed an elongated hole 60, or lumen, arranged longitudinally.
• the material constituting the tongue 62 is such that the latter can flex elastically laterally, over a limited stroke, for example over ten degrees on either side of the longitudinal axis of the plate 1.
• the body 33 of the front stop is integral with a vertical rod 32.
• the latter is located in the axis of the ski, behind the axis of rotation 30.
• the rod 32 engages in the lumen 60.
• the tip of the ski is to the right.
• the stop body 33 In the rest position, which is the position shown in the figure, the stop body 33 is immobilized by its elastic return system (not shown) in a position centered on the ski and its longitudinal axis is referenced Xo.
• the support plate 1 is therefore also centered on the ski by means of the rod 32 and the connecting tongue 62.
• the lumen 60 is positioned in such a way that in this rest position the rod 32 is at the rear end of the light.
• the support plate 1 can, if necessary, move slightly, by pivoting around the axis Y, on either side of its average position Xo. This is particularly interesting if, despite the presence of the anti-friction plate 10, the friction appearing between the shoe and the support plate is high, for example in the case where a frozen snow pad has .
• FIG. 5 represents the device during a lateral release, which occurs during a high stress of the shoe in torsion.
• the front stop body 33 pivots about the axis 30, as shown by the arrow F.
• the lateral displacement of the rod 32 secured to the body 33 in turn causes lateral displacement, on the same side , of the support plate 1. This pivots about the axis Y_ as shown by the arrow G.
• the distances between the rod 32 and the axis 30 on the one hand and between the end 61 of the tongue 62 and the axis Y on the other hand are chosen such that the travel of the support plate corresponds faithfully to that of the shoe.
• the axis Y is also located under the shoe, for example at the level of the arch of the foot, the trajectories also coincide satisfactorily.
• the support plate accompanies the sole so that the relative sliding between the underside of the sole and the lining 10 are extremely limited. Because, in addition, the movable support plate rests on the fixed base 20 by means of an anti-friction lining 23, the release of the boot is done in a particularly gentle and safe manner.
• Figure 5 is designated by the reference X the longitudinal axis of the support plate in an intermediate position of release.
• the base plate 1 has some additional freedom of motion with respect to the X direction, that could be called “middle management" r
• the plate 1 can pivot around the Y axis, on one side or the other of the X axis, independently of the movement of the front stop.
• an additional pivoting in the same direction as the initial direction of movement, of the support plate whose longitudinal axis is referenced X '.
• This additional pivoting, of a few degrees is symbolized by the arrow G '. It causes an elastic bending of the tongue 62.
• a similar movement could be observed in the other direction.
• the tongue 62 regains its normal rectilinear shape while the front stop returns to its position centered on the ski , bringing the movable plate into this same position.
• the pivot axis of the support plate 1, referenced Z is not materialized by a cylindrical stud.
• the guide of the plate 1 is ensured by a part, or rib 27, having an outline in an arc of a circle integral with the mounting plate of the front stop.
• a groove of complementary shape is formed in which the rib 27 engages.
• the radius of curvature II is such that the axis 2 is located in a zone corresponding to the average axis of rotation of the shoe in the binding, for example at the level of the tibia.
• suitable means not shown, are provided which hold the movable plate on the rib 27.
• the movable support plate is of identical design or similar to that of Figures 1 to 5.
• the front stop is different type. It is a front stop of the same general type as those described for example in documents DE-A-3,539,969 and DE-A-3,905 ⁇ * f5. It comprises a pair of parallel longitudinal rods 70 which are articulated at the front on vertical axes 71. At their end directed towards the rear, the rods 70 are articulated on a cross-member 73 by means of axes 75. On these same axes are articulated the jaws 72 serving to retain the tip of the shoe.
• An elastic mechanism makes it possible, in a well known manner, to normally maintain the rods 70 parallel to the axis of the ski while keeping the two jaws 72 closed.
• tripping takes place in two stages.
• the rods 70 in a first phase, pivot jointly as is symbolized by the arrows j_ while the cross member 73 moves transversely (arrow 3).
• the actual triggering mechanism which is not shown, is such that beyond a certain transverse displacement stroke, at least the outer jaw 72 is free to pivot outward, as symbolized by arrow K.
• the shoe can then, in a second phase, disengage from the binding.
• the cross member 73 carries a control rod 7k.
• the two arms 85 are normally folded inwardly of the ski and enclose the tip of the boot, retaining the latter in a position centered on the ski.
• the curved end 91 of the member 9 is trapped in the bottom (top) of the "V" cam 19, keeping the plate 1 centered on the ski.

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• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Window Of Vehicle (AREA)

Applications Claiming Priority (3)

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ID=9427366

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• 1992
  • 1992-02-27 FR FR9202619A patent/FR2687927B1/fr not_active Expired - Fee Related
  • 1992-12-28 DE DE69211361T patent/DE69211361T2/de not_active Expired - Fee Related
  • 1992-12-28 AT AT93917421T patent/ATE138819T1/de not_active IP Right Cessation
  • 1992-12-28 WO PCT/FR1992/001239 patent/WO1993016770A1/fr active IP Right Grant
  • 1992-12-28 EP EP93917421A patent/EP0627947B1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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