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
  • A63C5/00—Skis or snowboards
  • A63C5/06—Skis or snowboards with special devices thereon, e.g. steering devices
  • A63C5/075—Vibration dampers
• • 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
  • A63C9/08557—Details of the release mechanism
  • A63C9/08564—Details of the release mechanism using cam or slide surface
• • 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
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C7/00—Devices preventing skis from slipping back; Ski-stoppers or ski-brakes
  • A63C7/10—Hinged stoppage blades attachable to the skis in such manner that these blades can be moved out of the operative position
  • A63C7/1006—Ski-stoppers
  • A63C7/1013—Ski-stoppers actuated by the boot
• • 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
  • A63C9/005—Ski bindings with means for adjusting the position of a shoe holder or of the complete binding relative to the ski
• • 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
  • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
  • A63C9/0841—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw
  • A63C9/0842—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw the jaw pivoting on the body or base about a transverse axis

Definitions

• the invention relates to a ski safety binding, which is intended to retain the front end of a boot on a ski, and to release this boot end when it exerts excessive stress on its binding.
• the invention relates to the support plate, which is associated with the retaining member of the front of the shoe, and on which the shoe sole rests.
• Support plates which are integral with the ski or the base of the binding; generally, these plates are constituted by a base plate to which an anti-friction surface is attached, most often a polytetrafluoroethylene plate. Such a support plate is for example described in patent FR 2533 832.
• Support plates which have a base plate integral with the ski, and a support plate movable laterally. This support plate, on which the sole rests, can move laterally with the sole. In this case, when the boot is released, the friction is located between the support plate and the base plate, and not between the bottom surface of the sole and the support of the boot on the ski.
• Patent FR 2 449 459 describes such a support plate, with a support plate which is movable laterally with the member which retains the front of the shoe.
• Patent DE 23 33 166 describes another embodiment, according to which the support plate is independent of the jaw, but it is connected to the base plate of the support plate by an elastic return device.
• the support plates which are currently known have the disadvantage that all the vibrations, jolts or shocks to which the ski is subjected, in a vertical direction, are transmitted directly to the boot.
• the boot is in fact in direct contact with the ski, by means of elements which are non-deformable in a vertical direction.
• shocks and vibrations are part of the information that the skier perceives through his skis, his shoes and his bindings. It is from this information that the skier controls his movements, for example to correct his position or initiate a turn or take an edge.
• shocks and vibrations if they are transmitted directly, are harmful because their amplitude is excessive compared to the level of other information that the skier receives. These shocks and vibrations temporarily mask other information.
• One of the objects of the invention is to provide a support plate for a binding, and in particular a front binding, which overcomes this drawback by filtering the information which is transmitted to the skier via his ski and his boot. so as to attenuate in particular the information of too great amplitude.
• the ski binding according to the invention is intended to retain the front end of a boot on a ski, and to release this boot end when it exerts excessive stress on its binding; it comprises a member for retaining the end of the boot, and furthermore comprises a support plate interposed between the boot and the ski, on which the front of the shoe sole rests, the support plate also having a support plate which is in contact with the shoe sole.
• the ski safety binding is characterized in that it also has a layer of shock absorbing material which is interposed between the support plate and the upper surface of the ski, so as to filter the vibrations transmitted by the ski to the boot. , while maintaining the conditions of contact and transverse sliding of the shoe relative to the support plate.
• FIG. 1 shows, in side view, a front attachment equipped with a support plate according to a first implementation of the invention.
• FIG. 1 is a top view of the support plate of Figure 1.
• FIG. 3 is a side view, in longitudinal section, of the support plate of Figure 1.
• FIG. 4 is a top view of the support plate of Figure 1, without the upper support plate.
• FIG. 5 is a general view showing a shoe on a ski, illustrating an advantageous application of the invention.
• FIG. 6 represents, in side view and in section, an alternative embodiment of the support plate of FIG. 3.
• FIG. 7 to 9 illustrate alternative embodiments of the invention in the case of a movable support plate with the jaw of the binding.
• FIG. 10 shows, in side view and in section, an alternative embodiment of the support plate.
• FIG. 11 to 13 show alternative embodiments of the support plate, adapted to particular forms of skiing.
• FIG. 14 shows, in side view and in section, a front attachment equipped with a support plate, according to another implementation of the invention.
• FIG. 15 shows, in top view, the support plate of Figure 14, in the absence of the probe.
• FIG. 1 shows a safety binding 1, which is intended to retain the front end of a boot on a ski 2.
• the front binding is of any suitable type.
• the binding 1, shown in Figure 1 has a body 3 which is movable in rotation around a base 5, secured to the ski 2.
• the binding also comprises a jaw 4, which constitutes with the body 3 a one-piece assembly.
• the jaw 4 has means for retaining the front end of the shoe, in particular means ensuring lateral and vertical retention towards the top of the shoe.
• the jaw 4 can be adjusted in height to adapt to soles of different thickness, by known means, for example a vertical screw 10 which connects the body 3 to the base 5, and which adjusts the vertical position of the body .
• any other suitable means is suitable.
• the binding 1 also has a support plate 6, on which the front end of the shoe sole rests.
• the binding 1 In response to the lateral stresses of the shoe, the binding 1 opposes a restoring force.
• the jaw 4 lets out the front of the shoe, which is thus released.
• the lateral release of the front of the shoe is also accompanied by a sliding of the sole on the support plate 6, in a transverse direction.
• the support plate 6 has, in its upper part, a support plate 8. It is on this support plate that the sole rests.
• the support plate is rigid enough to support the front of the shoe without deformation, and it has, on its upper surface, in the contact zone of the shoe, means for attenuating the friction between the sole and the plate.
• the support plate 8 is equipped with a sliding plate 9 in its zone of contact with the sole of the shoe. This sliding plate 9 is for example constituted by a polytetrafluoroethylene plate bonded to the support plate 8.
• the support plate 6 also comprises, in its lower part, under the support plate 8, a base plate 1 i, which is in abutment against the upper surface of the ski. As shown in Figures 2 and 3, the base plate 11 is extended forward by a portion 12 which is engaged under the base 5 of the binding. The base plate 11 is thus held against the ski by means of the screws which assemble the base 5 to the ski. The screw holes are visible at 13 in Figure 2.
• the support plate 6 has a layer 16 of a damping material.
• the layer 16 has a substantially constant thickness, in the absence of a shoe, and extends substantially under the entire surface of the support plate 8. It is secured by each of its faces from one side to the support plate 8, on the other to the base plate 11, for example by adhesion (bonding) or by fitting into a housing of the support plate 8, or the base plate 11.
• the plate 11 has a projecting spoiler 40.
• This spoiler continuously extends the upper surface of the support plate 8.
• it constitutes a rear stop for the layer 16, and prevents the backward creep of this layer during its compression.
• the material of the layer 16 is chosen for its qualities of elasticity and mechanical damping, so as to dampen the vibrations and shocks to which the ski is subjected and which are transmitted to the boot.
• This material is of any suitable type, it is for example a thermoplastic material whose Shore A hardness is between 10 and 95 for a thickness of 2 to 6 mm, and which moreover has qualities of elasticity, that is to say elastic return, and damping. Possibly, the material may be of the viscoelastic type. Also, the material can have a progressive stiffness depending on its compression, for example because of its shape, or the material of which it is composed. For this purpose, for example, vertical recesses may be present in the central part of the layer 16.
• the front of the shoe is supported on the support plate 8 by means of the sliding plate 9.
• the front of the sole rests on a rigid support and, in the event of lateral release, the front slides relative to this rigid support, or more precisely the sliding plate 9 of this support.
• the conditions of contact and sliding of the shoe are not modified compared to a traditional support plate.
• the layer 16 absorbs shock and vibration from the ski. These shocks and vibrations therefore reach the support plate 8 and the shoe with an attenuated amplitude.
• FIG. 4 represents, on a ski portion 2, the binding 1 of FIG. 1, which is intended to retain the front of a shoe, as well as a rear binding element 20, which is intended to retain the rear end of the shoe.
• the front fastening element 1 has a support plate 6, on which the front end of the shoe rests.
• the rear end of the boot, for its part, is supported on a bearing surface 21, which, in this case, consists of the upper surface of the brake of the rear binding 20.
• a layer of shock absorbing material 22 is interposed between the bearing surface 21 and the upper surface of the ski 2.
• the material used for the layer 22 has a greater stiffness than that used for the layer of shock absorbing material 16 of the front support plate 6.
• the support surface 21 of the boot is guided so as to be able to move only in a vertical plane and parallel to the longitudinal axis of the ski.
• the movement of the bearing surface 21 is essentially a translational movement in a vertical direction.
• the surface 21 is articulated around the axis of rotation 23 of the brake arms. This articulation hinders any rolling movement of the surface 21. In this way, the skier perceives by the front of his shoe information which is filtered and absorbed by the layer 16 of the front support plate 6.
• the lateral movements which it gives, and which are transmitted by the boot to the ski pass mainly through the heel of the boot, through the layer 22 situated under the rear bearing surface 21.
• the forefoot was more sensitive to perceive information coming from the snow.
• the heel is the area through which the skier leads his ski, no doubt due to its location in the axis of the tibia.
• the damping, carried out by the layer 13 under the front of the sole, is of the multidirectional type. Indeed, the support plate 8 is not guided in any direction. It is somehow floating on layer 13.
• the damping produced by the layer 22 is mainly vertical due to the guiding of the bearing surface 21.
• the purely vertical movements of the heel towards the ski are damped, but the lateral movements which the skier performs, for example in the turns or the edges, are transmitted directly to the ski.
• the base plate 11 and the support plate 8 are connected to one another, continuously, towards the front, by an elastically deformable zone 48, which constitutes in a way an elastic hinge.
• the layer of damping material 16 is interposed between the support plate 8 and the base plate 11.
• the base plate 11 is extended towards the rear by a spoiler 49, which has a face 50 oriented towards the layer 16.
• This face 50 constitutes a stop for the rear edge of the layer of damping material 16, the goal is to limit its work in shearing and to favor its work in compression.
• FIG. 7 represents a fixing 95, with a jaw 96 movable relative to a fixed body 97.
• fixing 95 has a construction similar to the fixing described in French patent application No. 2 625 911.
• the jaw 96 is connected to the body by arms 94, and it is guided by arms 94 in its lateral movement.
• the support plate 89 is integrally connected to the jaw 96, and it accompanies the jaw 96 in its lateral movement.
• the base plate 98 is fixed, it merges with the base 99 of the body 97, and extends this base backwards.
• the layer of damping material 91 is embedded in a housing 99 of the base plate 98, and, moreover, this layer 91 is surmounted by a sliding plate 90.
• FIG. 8 represents an alternative embodiment, according to which the layer 91 is interposed between the upper surface of the ski and the base plate 102.
• the base plate 102 is slightly raised relative to the upper surface of the ski.
• a notch 100 is located between the base plate 102 and the base 99 of the binding, so as to allow movement of the base plate 102 relative to the ski, in a vertical direction.
• FIG. 9 is another variant according to which the layer 91 of shock absorbing material is situated above the plate 104 movable with the jaw 105, and this layer 91 is moreover surmounted by a support plate 101 on which the shoe rests .
• FIG. 10 a variant construction of the plate of FIGS. 1 to 4 is shown, according to which the support plate on which the shoe rests is constituted by a plurality of cylindrical profiles 109, which are embedded in the layer 116 of cushioning material.
• the profiles 109 are oriented in a substantially transverse direction, and they are located in a substantially horizontal plane. In the transverse direction, the profiles 109 are rectilinear, or slightly curved, the center of curvature being located in the heel area of the shoe.
• FIG. 11 represents, in section through a vertical and transverse plane, a ski 142.
• the ski 142 has, at its upper surface, at least in the region of the front binding, an edge 145, of width less than the width of the ski, so that two recesses 146 and 147 are present on each side of the edge 145.
• the layer of damping material consists of two segments 149 and 150, respectively located in each of the recesses 146 and 147.
• the plate support 143 has a bridge shape, with two pads 153 and 154, which bear respectively on each of the segments 149 and 150.
• the support plate 143 is surmounted by a sliding plate 144.
• each shoe 153, 154 increased by the height of a segment 149, 150, is substantially greater than the height of the edge 145 of the ski.
• These heights can, moreover, be determined so that the upper surface of the ski 156 constitutes a stop for the support plate 143, which limits the vertical downward movement of the support plate 143.
• FIG. 12 represents a ski 160, the cross section of which has a U shape, at least in the zone situated behind the front binding.
• the layer of shock absorbing material 161 is located inside the U-shaped profile, and it is embedded between the two lateral flanges 162 and 163 of the ski 160.
• the support plate 165, and the sliding plate 166, are located at- above the layer of damping material 161.
• the height of this layer 161 is greater than the depth of the recess 167 of the ski. It can be determined so that the upper surfaces of the two lateral edges 162 and 163 constitute a stop which limits a vertical downward movement of the support plate 165.
• FIG. 13 shows another variant with a ski 170 having, in section, at least behind the front binding, a U shape.
• the layer of damping material 171 is embedded in the recess 172 of the ski, and has a height less than the depth of the recess 172.
• the layer 171 is surmounted by the support plate 173 which, in its lower part, has dimensions allowing it to penetrate into the recess 172. As in the previous case, it is possible to provide flanges 174 of the support plate 173 which , after a determined compression of the layer 171, come to bear on the lateral edges 175, which border the recess 172.
• FIG. 14 shows a binding 201 which is mounted on the upper surface 204 of a ski 202.
• the binding 201 is of a known type, for example according to patent application FR 81.22577.
• the embodiment shown comprises a pivot 203, integral with the ski 202.
• a body 205 is articulated relative to the pivot 203 around one or the other of two converging support lines that the pivot has on its rear side, corresponding to the right side of the figure.
• a return spring 206 is housed inside the body. This spring 206 bears at its front end against a threaded plug 207, which is screwed into a threaded orifice in the body, and which makes it possible to adjust the initial stress of the spring at rest. At its rear end, the spring 206 bears against the front face 208 of the pivot 203, by means of a support piece 209.
• a jaw 210 in which the front end of the shoe sole engages, constitutes, with the body, a one-piece assembly.
• a screw 211 substantially vertical, and screwed into the pivot 203, makes it possible to adjust the height of the body 205 and of the jaw 210.
• the body 205 is in fact coupled to the screw 211 at its head 212, for all movements vertical of this head.
• the body 205 and the jaw 210 can pivot laterally, under the lateral stresses of the shoe, and against the return action of the spring 206, which tends to return the jaw 210 to the rest position, that is to say centered on the longitudinal axis of the ski.
• the body 205 and the jaw 210 can also pivot in a limited manner, in a vertical plane, around the head 212 of the screw 211. This movement takes place against the return action of the spring 206, and it also causes a reduction in the effort that the shoe must overcome in order to push the jaw laterally, if necessary until the shoe is released by the jaw.
• the binding 201 also includes a compensation mechanism.
• This compensation mechanism shown is of a known type, for example from French patent application No. 82.20852. It comprises a feeler 233 on which the front end of the shoe sole rests.
• This probe 233 constitutes the support plate of the shoe.
• the upper surface of the probe 213 is coated with a plate of an anti-friction material, such as for example polytetrafluoroethylene, on which the sole of the shoe rests.
• the probe 213 comprises a support plate 233 is carried by a base 237 constituted for example by a thin metal plate.
• the front part of the base 237 is sandwiched between the pivot 203 and the upper surface 204 of the ski.
• the rear part 238 of the base 237 is folded over the rear edge 239 of the probe 213.
• This assembly constitutes a sort of transverse articulation, and allows the support plate 233 to pivot relative to this zone around a transverse axis.
• a lever 220 In the front zone of the probe is a lever 220 with two arms, which is articulated relative to the base 237 about a transverse axis 221.
• the rear arm 222 of the lever 220 extends, from the axis 221, backwards and upwards.
• the front edge of the plate 233 is supported on the rear end of the arm 222.
• the front arm 223 of the lever 220 has, seen in section in the plane of the figure, a square shape, with, starting from the axis 221, a horizontal part bearing on the base 217, then a vertical part. The upper end of this vertical part bears against the lower end of a substantially vertical nail 225, which is anchored in the lower part of the jaw 210.
• a plate 247 is also interposed between the base 237 and the upper surface 204 of the ski 202.
• the plate 247 is for example secured to the ski by the screws which retain the pivot 203 to the ski.
• the plate 247 In its rear part, in the region of the probe 233, the plate 247 has a recess 248. Inside this recess 248 extends a layer of damping material 250. Preferably, this layer extends in the rear part of the recess 248, at least in the region of the rear edge 239 of the probe 233.
• FIG. 15 shows ribs 249 in the housing 248. These ribs maintain the layer 250 in position.
• the thickness of the layer 250 is greater than the depth of the recess 248. In this way, the base 237 is substantially prestressed upwards by the layer 250.
• the plate 247 immediately behind the fold 238, the plate 247 has a rim 251, the substantially vertical front face 252 of which constitutes a support for the rear part of the layer 250.
• the recess 248 is bordered laterally by two edges 254 and 255, on which the base 237 comes to bear beyond a determined compression of the layer 250.
• Figure 16 illustrates the operation of the compensation mechanism.
• the boot exerts, relative to the ski, a force F, via the probe 233, and it is assumed that the energy resulting from this force is fully absorbed by the layer of material 250.
• This layer 250 is flattened, until the base 237 comes into contact with the edges 254 and 255 of the plate 247.
• the layer 250 is retained in its rear part by the vertical face 252 of the flange 251.
• the material 250 works mainly compression, and works little in shear.
• Advantageous damping characteristics are thus obtained. These characteristics can be modified by varying the distance between the face 252 and the rear part of the layer 250.
• the operation of the compensation mechanism is a combination of the two operating modes which have been described with respect to FIGS. 16 and 17.
• the stresses which exist between the boot and the ski in a vertical direction are either absorbed by the layer of damping material 250, or else are transmitted to the lever 220.
• a stress on the boot relative to the ski can either be absorbed and filtered by the layer 250, or else be transmitted by the lever 220, or else be partly filtered. and partly transmitted to lever 220.

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

Applications Claiming Priority (4)

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• 1990
  • 1990-12-13 EP EP91901807A patent/EP0506806A1/de not_active Withdrawn
  • 1990-12-13 JP JP3502088A patent/JPH05502601A/ja active Pending
  • 1990-12-13 WO PCT/FR1990/000910 patent/WO1991008808A1/fr not_active Application Discontinuation
  • 1990-12-13 US US07/859,500 patent/US5303950A/en not_active Expired - Fee Related

Non-Patent Citations (1)

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