Classifications

• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C13/00—Snow shoes
  • A63C13/005—Frames therefor
• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C13/00—Snow shoes
  • A63C13/001—Bindings therefor

Definitions

• the present invention relates to a snowshoe comprising a base structure forming a shoe zone and a lift zone.
• the lift zone includes a lateral overhang on each side of the shoe zone and extends toward the rear of the shoe zone to form a rear spatula.
• the snowshoe has advantageous characteristics of flexibility and ergonomics.
• Snowshoes are known objects for many years. They were originally designed to allow people to move on floors covered with a large amount of snow. They are also very widespread in the Nordic countries, frequently affected by heavy snowfall. However, these extreme conditions reflect less and less the reality of current racquet use. Indeed, today, they are mostly used in a "sport and recreation" by hikers. The followers being of very varied levels, starting from the beginner amateur to the expert hiker, the requirements of each of the levels are very different. This heterogeneity forces manufacturers to constantly develop new products to best meet the various expectations. Today we find several ranges of products, each with specific advantages. But manufacturers are still looking for innovative solutions that can bring greater comfort, and dynamic performance up.
• snowshoes are composed of a sieve, a front spatula, a rear portion and a fastening system.
• This Basic configuration makes it easy to move on the snow due to increased lift, avoiding sinking into the snow.
• the front and rear spatulas are further provided to allow an easy approach, with a roll of the foot, making walking easier by making it more natural.
• this goal is generally not achieved because of the size of the rackets, their shape, the shoe rack and their surface often making them unwieldy.
• the snowshoeing is often difficult, because the walker must lift the front of the racket, draw the racquet forward, and then lay flat, without being able to perform a natural and ergonomic foot .
• snowshoes have either a hinge or a double spatula, that is to say a spatula in the front of the foot and a other at the rear or a very raised front spatula associated with a substantially flat rear portion.
• a hinge or a double spatula that is to say a spatula in the front of the foot and a other at the rear or a very raised front spatula associated with a substantially flat rear portion.
• the shoes are fixed on a hinged support with the screen to facilitate the pivoting of the foot when walking. This articulation generates noise.
• the joints are rigid blocking the flexibility of shoes and foot. These supports are not suitable for steps on slopes. The absence of deformation of the support and the sieve implies a non-vertical installation of the foot which becomes non-aligned with the lower limb. These movements can be sources of pathologies.
• the document FR2912928 describes a snowshoe with a spatula at the front, a rear portion and a sieve.
• the foot is fixed on the racket by the front part of the shoe so that the back of the foot is movable on the racket.
• a pivoting attachment plate is mounted on the sieve frame with a hinge.
• the architecture allows the foot to pivot on the racket.
• a lateral articulation is also planned.
• the document US6006453 describes a snowshoe with a spatula at the front and a rear portion and a frame formed by rails, the foot being fixed on the racket only by the front part of the shoe.
• the spatulas are interchangeable and several sizes are available by adjusting the extension of the rails to adapt according to the use of the racket and the size of the user.
• the presence of the front spatula forces the user to lift their feet relatively high when walking, causing premature fatigue of the user.
• Asymmetric rackets are also known.
• the document FR2560055 describes asymmetrical snowshoes, with multi-point fixation, articulated, off-center, off-center, allowing easy movement on various snowy reliefs.
• the racket is characterized by its ease of use. To progress, the effort exerted by the user is considerably reduced thanks to the articulated fastening system, the rebalancing of the frame, the stabilizing fin and the crampon.
• This racket however, has the aforementioned drawbacks related to the presence of the front spatula, forcing the user to lift the foot relatively high.
• the document FR2768938 discloses a racket comprising a sieve surrounded by a frame, the contour defines the bearing surface, and a support piece which extends inside and on which the shoe is fixed. 'user.
• the outline of the frame is open. More specifically, it has an opening providing a solution of continuity between the outside and the inside of the frame where the support piece is located.
• This opening is intended to make flexible, or more flexible, parts of the frame that are located on both sides, the maximum flexibility being obtained at the point of opening.
• the frame of the racket is likely to deform in a different way on both sides of the opening and therefore to adapt to a difficult terrain configuration, that is to say not defining a only plan of support, which results in a better hanging.
• This racket has the aforementioned drawbacks related to the presence of the front spatula, forcing the user to lift the foot relatively high.
• the document US2010132225 describes a racket having a flexible attachment interface, a spatula at the front and a rear portion.
• the rear portion is made of softer material than the front. This feature allows the racket to cushion the support of the user's foot when walking to increase comfort.
• the racket has the aforementioned drawbacks related to the presence of the front spatula, forcing the user to lift the foot relatively high.
• the document US2014041258 describes a racket consisting of a long and wide sieve and a spatula at the front and a rear portion.
• the racket is formed of a flexible material in which a plurality of cone-shaped circles joined together are provided. The circles can be deformed under the weight of the user, to compensate for terrain relief to ensure good support and improve comfort.
• the racket has the aforementioned drawbacks related to the presence of the front spatula, forcing the user to lift the foot relatively high.
• the document FR2999446 describes a racket which is in the form of an elongated plate called sieve on which is mounted a fixing for retaining the user's shoe, the attachment being of the type pivoting around a transverse axis (X, X '), said sieve comprising a part central located in the area occupied by the shoe, which is extended forward beyond the pivot axis (X, X ') by a front portion called spatula curved upwardly, and rearwardly beyond the central portion by a rear portion called heel.
• the screen is flexible at least longitudinally and at least in the central portion.
• the racket also has the aforementioned drawbacks related to the presence of the front spatula, forcing the user to lift the foot relatively high.
• W09506502 discloses a snowshoe formed of a semi-flexible platform comprising connecting means for binding the heel and the front of a shoe of the user to the platform.
• the latter is molded in a semi-flexible plastic material able to flex when walking. This feature makes a racket slightly flexible but not enough to achieve real comfort during the unwinding of the foot.
• the racket also has the aforementioned drawbacks related to the presence of the front spatula, forcing the user to lift the foot relatively high.
• Document FR2743501 discloses a walking rack, in particular on snow, consisting of a substantially flat platform, provided with reversible fastening members of the user's foot to said platform, made of cellular elastomer.
• This racket is light, rigid but with a certain elasticity. This feature allows the user to have a more comfortable snowshoe than conventional snowshoes.
• the racket however, has the aforementioned drawbacks related to the presence of the front spatula, forcing the user to lift the foot relatively high.
• the document U S20170225061 describes a substantially flat snowshoe, comprising a base structure forming a shoe zone and a lift zone surrounding the shoe area, except at the front, where the positioning of the fastener causes an overflow of the shoe in front of the racket.
• the tip of the foot is thus likely to catch or interfere with a possible obstacle, increasing the risk of falls potential.
• the natural course of walking is not respected.
• the invention provides different technical means.
• a first object of the invention is to provide a snowshoe flexible and ergonomic.
• Another object of the invention to provide a snowshoe having a good range and an optimal grip on all types of soil and varied terrain.
• Yet another object of the invention is to provide a snowshoe design simple and inexpensive.
• Another object of the invention is to provide a snowshoe facilitating walking and having the characteristics necessary for the user to have a more natural approach possible.
• the invention provides a snowshoe comprising a base structure forming a shoe zone and a lift zone and wherein the lift zone comprises a lateral edge on each side of the shoe zone, the front of the racket ending in a front spout corresponding to the front of the shoe zone and housing the front part of the shoe and the base structure being elastically deformable.
• the ergonomics and comfort are optimized.
• the user uses the racket in normal operation, with a roll of the foot respecting the biomechanics of the body, for comfort increased and improved performance.
• the racket also has increased safety, including avoiding falls.
• the front portion of the racket is raised.
• Such an arrangement forming a front zone that rises upwards avoids friction and interference with the ground and possible obstacles during walking.
• the basic structure comprises a main reinforcing element comprising at least three sectors substantially shaped "T" and respectively corresponding to bearing areas A of the first metatarsal B of the fifth metatarsal and C of the heel.
• This feature provides a sufficiently flexible racket to adapt to the relief of the ground, but otherwise rigid enough to provide a good level of lift and good grip.
• the main reinforcing element ensures the transfer of the side supports of the racket during canting support towards the different zones of the foot. These reinforcements are directed to the key ergonomic points of the foot.
• the main reinforcement is centered at the first metatarsal to the inner end of the racket to promote propulsion on steep hills. Stabilization of the upstream foot when walking in a slope is provided by reinforcing lines between the fifth metatarsal and the outer end of the racket.
• the base structure comprises a secondary reinforcing element having a level of rigidity lower than that of the main reinforcing element, said secondary reinforcing element extending between said sectors of the reinforcing element. main.
• the basic structure also comprises a comfort layer of expanded material or not, covering all or part of the main reinforcing element.
• This feature provides a racket simple design, comfortable, and inexpensive.
• the basic structure is elastically deformable. This characteristic makes it possible to respect the physiological walk, moreover by allowing an ergonomic and natural step of the foot.
• the basic structure comprises a solid surface.
• the absence of sieves, holes or perforations gives a better lift and allows to create a thermal insulation between the snow and the shoe.
• the snowshoe further comprises two lateral flanges, arranged on either side of the shoe zone.
• edges provide a good lateral support of the foot because of the good positioning of the shoe on the racket.
• the shoe zone may comprise crampons and / or non-slip means to improve the support and prevent slipping of the foot on the racket. Efforts are better transmitted to the racket, and the overall performance is improved.
• These edges can also serve as a support for a clamping system.
• the lift zone is curved, preferably on the lateral overhangs. This feature avoids the accumulation of snow next to the shoe and stiffens the racket.
• each of the lateral overhangs has a lower surface, said bottom surface being raised on at least one of the two lateral overhangs.
• the basic structure is made of thermoplastic material, preferably included in the following families: thermoplastic polyurethane, thermoplastic elastomer such as polyethylene vinyl acetate or styrene butadiene styrene.
• the density of the polyethylene vinyl acetate is substantially 0.1 to 0.2, and thermoplastic polyurethane or thermoplastic elastomer of substantially 0.4 to 0.8.
• the material of the basic structure is expanded or not.
• the rear of the shoe area is asymmetrical and preferably with a clearance releasing the inner side.
• Such an embodiment avoids interference between the two back of the shoe area, and facilitates walking particularly at high speed, where the risk of collisions between rackets are higher.
• the rear of the shoe area is raised and / or twisted outwardly and / or has an opening.
• Such an arrangement with a rising portion avoids friction and interference with the ground and possible obstacles.
• the part raised makes it possible to obtain a more ergonomic and natural roll of the foot.
• This arrangement allows to evacuate the snow on the sides, avoiding projections.
• the twisted structure also provides stiffening of the racket.
• the possible opening also serves as a means of gripping and / or hooking.
• a shoe is integrated in the shoe zone.
• FIG 1 is a schematic representation of an example racket intended to be worn on the left foot, seen from above;
• FIG 2 is a schematic representation of the racket of Figure 1 elevation, with shaded representation symbolizing a shoe of a user for various sizes of shoes;
• FIG 3 is a schematic representation of another example racket, perspective view from the rear;
• FIG 4 is a schematic representation of the racket of Figure 3, seen in perspective from the front;
• FIG 5 is a schematic representation of the racket of Figure 3, elevational view
• FIG 6 is a schematic representation of the racket of Figure 3, seen in elevation from the rear.
• FIGS. 7a to 7g are schematic sections illustrating various examples of cross-sections of basic structures with various types of lateral edge profiles;
• FIG 8 is a schematic representation of an example of main and secondary reinforcement elements of a racquet base structure intended to be worn on the left foot;
• FIG. 9 is a schematic representation of another example of main and secondary reinforcement elements of a racquet base structure intended to be worn on the left foot;
• FIG. 10 is a schematic representation of yet another example of primary and secondary reinforcement elements of a racket base structure intended to be worn on the right foot.
• FIG. 11a to 11c are schematic sections illustrating various examples of longitudinal (FIG. 11a) and transverse (FIGS. 11b and 11c) sections of a racket provided with a comfort layer.
• FIGS. 1 and 3 illustrate, according to various points of view, an example of racket according to the invention.
• the racket 1 comprises a basic structure 2 comprising a shoe zone 3 and a lift zone 4 which surrounds the shoe zone 3, except at the front of the shoe zone. where the racket ends by forming a front portion 7.
• This front portion comprises a front nose 8 substantially corresponding to the front of the shoe zone 3.
• the user can use his snowshoes by walking in a manner similar to normal walking with shoes, by unrolling the foot, that is to say by first placing the heel, then the sole of the foot, and finally the front of the foot.
• the front nose 8 is preferably shaped curved, forming a kind of protective shell for the front end of the shoe.
• the lift zone 4 comprises a lateral overhang 5.
• the lift zone 2 extends beyond the shoe zone 3 to form the rear 3.
• the basic structure comprises a solid surface. The lift zone 4 thus provides an optimal weight distribution effect, for a minimal sink in the snow, and for a well-balanced approach. The continuity of the surface also provides good thermal insulation, protecting the feet from cold and moisture.
• the base structure 2 is preferably made from an elastically deformable material, giving it great flexibility of use.
• the deformability of the base structure allows the rear spatula to flex under the effect of the weight of the walker when the latter approaches his heel of the ground and the pose.
• the flexibility of the racket also allows to optimize the ergonomic behavior, in agreement and in respect of the biomechanics of the foot, which generates a walk with a roll of the foot, as previously mentioned.
• FIG. 5 and FIGS. 7a to 7g serve to illustrate the shaping of the lift zone 4 in a curved manner, preferably on the lateral overhangs 5.
• the lateral overhangs can thus be produced according to various types of profiles, as for example rectangular (FIG. 7a), with inclined outer walls (FIG. 7b), in an arc (FIG. 7c), flat (FIG. 7d), inclined outwards (FIG. 7e), or inwards (FIG. 7f), or in the form of "V" ( Figure 7g).
• Each of the lateral overhangs 5 has a lower surface 16, said lower surface 16 being raised on at least one of the two lateral overhangs 5, as shown in the examples of FIGS. 7d, 7e, 7f and 7g.
• the side overhangs are flexible enough to marry the various obstacles of the terrain type hole, pebble, or other.
• the basic structure 2 is advantageously made of a thermoplastic material, preferably included in the following families: thermoplastic polyurethane, thermoplastic elastomer. Polyethylene vinyl acetate or styrene butadiene styrene is advantageously used.
• the material of the basic structure 2 may be expanded or unexpanded, depending on the applications.
• the rear of the shoe zone 3 is preferably asymmetrical and advantageously comprises a clearance 15 releasing the inner side.
• the rear of the shoe zone 3 is raised and / or twisted outwardly. It preferably comprises an opening 19.
• the base structure 2 comprises a main reinforcing element 20 provided to provide sufficient rigidity for the transfer the weight of the walker is well distributed over the entire surface of the racket.
• the main reinforcing element 20 comprises at least three sectors 21, 22, 23 respectively corresponding to bearing zones A of the first metatarsus, B fifth metatarsal and C of the heel.
• the main reinforcing element 20 is designed to transmit the possible forces that can be received by the sectors 21, 22, 23 towards the rest of the basic structure 2. As shown in the example of Figure 8a, the main reinforcing element 20 has for example a profile substantially shaped "T".
• the sectors 21, 22 may extend in adjacent zones of lateral overhangs 5.
• the heel area 23 may also extend into the lateral overflow area 5 toward the back of the heel and / or on each side thereof.
• the base structure 2 comprises a secondary reinforcing element 30.
• This element of secondary reinforcement has a level of rigidity lower than that of the main reinforcing element 20.
• the secondary reinforcing element 30 is arranged between the sectors 21, 22, 23 of the main reinforcing element 20.
• the base structure 2 also comprises a layer 40 of foam comfort foam or not, covering all or part of the main reinforcing element 20, as shown in the examples of Figures 1 1a , 1 1 b and 1 1 c, in axial central section in Figure 1 1 a, and at different longitudinal positions of the racket for Figures 1 1 b and 1 1 c.
• a thermoplastic material is used to produce the comfort layer.
• two lateral flanges 9 are arranged on either side of the shoe zone 3.
• the lateral flanges 9 are preferably integral with the basic structure 2, for maximum robustness.
• the main reinforcement may also comprise a cubo-scaphoidal sector 24, 25, which extends substantially between the support zones of the scaphoid and the cuboid.
• the cubo-scaphoid zone 24, 25 extends on either side in the zone of the adjacent lateral overhangs 5.
• the main reinforcing element comprises a cubo-5th metatarsal axis extending substantially between the bearing zones of the cuboid 24 and the 5th metatarsal 22.
• FIG. 10 also illustrates that the main reinforcing element may comprise lateral sectors 26, 27 extending on at least one portion of each of the lateral overhangs 5. As a variant, these lateral sectors 26, 27 are interconnected. .
• the reinforcement structure described above may be used on one or more other types of rackets, for similar functions.
• the racket comprises a cover rod 10 extending longitudinally from said front nose 8 to the kick and laterally between each of the side flanges 9.
• the rod cover with the front spout 8 and the side flanges 9 form a housing 6 of front shoe, adapted to house the front part of the shoe.
• the cover rod 10 is preferably constituted by a unitary piece covering the boot from the front nose 8 up to on the kick.
• This unitary piece is generally elastic, either with an elastic material or with areas of elasticity.
• the Elastic material is an elastic fabric, preferably substantially waterproof.
• the fabric is expanded and preferably comprises neoprene.
• the rod cover 10 covers the entire surface located between the front nose 8 on the one hand, and at least one of the lateral flanges 9 d ' somewhere else.
• a clamping element 18 such as a lacing or a strap or a belt, cooperates with the cover rod 10.
• Such a clamping element 18 may be coupled to one or more blockers 14, as shown in the example of Figure 2.
• the rod cover 10 is made removably, and / or extends to form a gaiter integral with said cover rod 10.
• the cover rod 10 and the front nose 8 are monobloc.
• the previously described fixing system can be used on one or more other types of rackets, for similar functions.
• Reference numbers used in the figures can be used in the figures.

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

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• 2017
  • 2017-12-15 FR FR1771366A patent/FR3075060B1/fr active Active
• 2018
  • 2018-11-29 CA CA3076032A patent/CA3076032A1/fr active Pending
  • 2018-11-29 US US16/652,293 patent/US11154767B2/en active Active
  • 2018-11-29 WO PCT/IB2018/059478 patent/WO2019116143A1/fr unknown
  • 2018-11-29 EP EP18821750.9A patent/EP3723878A1/de active Pending

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