FR3060402A1 - FIXING SYSTEM FOR HIKING SKI BOARD - Google Patents

Abstract

The present invention relates to: - a shoe attachment system (C) on a ski touring board comprising, on the one hand, a front stop comprising a base (E) fixed to the board and wedging means (K) and clamping means (S) of the front part of the boot (C) and secondly means for supporting the rear part of the boot comprising a beam (1) articulated on the base (E) and supporting, together, a displaceable carriage (2) provided with locking means and a heel piece (3) connected to said carriage by an elastic return element (5) and sliding axially on said beam (1) while being supported behind the heel of the shoe (C), characterized in that said heel piece (3) comprises a rear stop provided with a collar (4) intended to bear against the rear part of the upper of the shoe (C) and having a holding portion (42) and a boot portion (41) and - a running board data equipped with the fixing system.

Description

® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:

(to be used only for reproduction orders)

©) National registration number

060 402

62934

COURBEVOIE © Int Cl ⁸ : A 63 C 9/20 (2017.01)

PATENT INVENTION APPLICATION

A1

©) Date of filing: 20.12.16. ® Applicant (s): SKIS ROSSIGNOL- CLUB ROSSI- ©) Priority: GNOL Simplified joint stock company - FR. @ Inventor (s): BREGEON VINCENT, GELIN VINCENT, LIMANTON JULIEN, SERCLERAT (43) Date of public availability of the VINCENT, VAILLI JOHAN and GERVASONI REMI. request: 22.06.18 Bulletin 18/25. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): SKIS ROSSIGNOL- CLUB ROSSIGNOL related: Joint stock company. ©) Extension request (s): ® Agent (s): BUSNEL JEAN BENOIT.

154 / ATTACHMENT SYSTEM FOR HIKING SKI BOARD.

FR 3 060 402 - A1

The present invention relates to:

a system for fixing a boot (C) to a ski touring board comprising, on the one hand, a front stop comprising, a base (E) fixed on the board as well as wedging means (K) and tightening (S) of the front part of the shoe (C) and, on the other hand, means for supporting the rear part of the shoe comprising a beam (1) articulated on the base (E) and supporting, jointly, a movable trolley (2) provided with locking means and a heel piece (3) connected to said trolley by an elastic return element (5) and sliding axially on said beam (1) bearing behind the heel of the shoe ( C), characterized in that said heel piece (3) comprises a rear stop provided with a collar (4) intended to bear against the rear part of the upper of the shoe (C) and having a holding portion (42 ) and a portion of footwear (41) and,

- a hiking board equipped with the fixing system.

Attachment system for ski touring board [0001] The invention relates to a system for attaching a boot to a ski touring board as well as a hiking board equipped with said system.

PRESENTATION OF THE INVENTION The invention relates more particularly to a binding intended for a short and light gliding board allowing, at the same time, the uphill and downhill evolution on snowy terrain and the practice of skiing. short hike.

For the uphill evolution, the sole of the boards is generally provided with an anti-recoil strip called "sealskin" or an anti-recoil sole which prohibits its return to the rear.

For the downhill course, the seal skins mounted on each of the boards are removed to allow the skier to slide on the snow.

Some boards, such as that described, in particular, in application FR 15 55441, relatively short, have a fastening system in their central part intended for flexible shoes specifically designed for hiking.

Attachment systems for ski touring are described, in particular, in DE 10 2013 014755 and DE 10 2014 000830. These systems intended to hold shoes with flexible soles, comprise on the one hand, a base fixed on the board and provided with means for wedging and tightening the front part of the shoe and, on the other hand, a support member for the rear part of the shoe comprising a beam articulated on the base and supporting, on the one hand , a carriage capable of being moved axially then locked and, on the other hand, a heel piece connected to the carriage by an elastic return element and being capable of sliding axially on the beam while bearing on the shoe.

The support member of the rear part of the shoe is also provided with wedging and tightening means in the form of straps of adjustable length.

However, unlike the base, the presence of a strap on the rear support member is problematic because it makes putting on laborious and hinders automatic heaving in the event of a fall.

In addition, this strap is difficult to adjust and tends to relax with the movements of the foot because these fastening systems are intended for hiking shoes whose structure is light and deformable and the sole is flexible and not rigid shell alpine ski boots.

Finally, the deterioration of all or part of the heel requires the complete replacement of this part.

The present invention aims to solve these technical problems ergonomically by seeking to simplify and lighten the existing fastening systems while eliminating the presence of a strap at the back of the shoe. Thus, the invention provides a compact and adjustable, versatile fixing system, easy to put on and take off, which guarantees the stability and safety of the skier both during uphill and downhill movements.

This object is achieved, according to the invention, by means of a system for attaching a boot to a ski touring board comprising, on the one hand, a front stop comprising, a base fixed on the board as well as means for wedging and tightening the front part of the shoe and, on the other hand, means for supporting the rear part of the shoe comprising a beam articulated on the base and jointly supporting a movable carriage provided with locking means and a heel piece connected to said carriage by an elastic return element and sliding axially on said beam while resting behind the heel of the shoe, characterized in that said heel piece comprises a rear stop provided with a collar intended for lean against the rear part of the upper of the shoe and having a holding portion and a portion of footwear.

According to an advantageous characteristic, the holding portion of the collar is substantially vertical, while the fitting portion has a ramp flared upwards and backwards.

Preferably, the rear stop comprises a rigid frame which carries the collar.

According to another advantageous characteristic, the collar has a connecting portion with the rigid frame.

According to a first alternative embodiment, the rigid frame is delimited by at least two uprights whose upper ends are connected to the collar.

Preferably, the upper ends of the uprights are removably engaged in holes in the collar which thus forms a transverse connecting spacer.

According to a specific variant, the collar is in the form of a hoop.

It is expected, according to the invention, that the elastic return element has a stiffness such that the support efforts of the heel piece on the rear of the shoe are greater than 50N, whatever the size of the shoe. This arrangement makes it possible to get rid of the rear strap of the prior art.

According to a first alternative embodiment, the elastic return element consists of a ring of uniform thickness provided with an oblong central hole, the ends of the oblong hole being connected respectively to the carriage and to the heel piece.

According to another alternative embodiment, the elastic return element consists of a solid tongue of uniform thickness having a central constriction and provided at each of its longitudinal ends with an orifice for fixing, respectively, to the trolley and heel piece.

According to another characteristic, the heel piece has a central recess in which the carriage is embedded.

According to yet another characteristic, the central part of the beam has bridges delimiting cells in which are anchored pins carried by the underside of the carriage.

Preferably, these pins protrude on either side of the underside of the carriage.

To strengthen the holding of the pins in the cells, their front face is inclined downward and backward with an angle between 3 ° and 10 °.

At the same time, it is expected that the cross section of the bridges of the beam has bevelled longitudinal faces.

According to a specific embodiment, the carriage carries two lateral series of four pins, the pin located at the rear of each series being longer than the other three in order to avoid the risks of separation of the carriage during the bending of the beam.

According to yet another characteristic, the cells cooperate with a cam for locking the beam carried by the upper face of the board.

According to another specific variant, the lateral edges of the beam are raised by forming guide rails for the heel piece.

At the same time, the underside of the pad carries retaining lugs extending under the lateral edges of the beam.

Another object of the invention is a hiking board equipped with a fastening system as defined above.

Thanks to the invention, it becomes possible to keep the shoe in the binding in a reliable and secure manner by avoiding any other complementary means such as a strap.

In addition, the boot becomes easier and faster regardless of the model and size of the hiking shoe.

In the event of a fall, the absence of a strap at the rear part of the shoe makes it possible to release the foot immediately and avoid the risk of serious trauma.

Finally, the repair and maintenance of the binding are easy because the heel piece is made of several interchangeable parts and its longevity is increased by better resistance of the elastic return element ensuring the connection between the heel piece and the carriage .

BRIEF DESCRIPTION OF THE FIGURES Other characteristics and advantages of the invention will emerge on reading the description which follows, with reference to the appended and detailed figures below.

Figure 1 is a perspective view of an embodiment of the fixing system of the invention.

Figures 2A, 2B show side views of two alternative embodiments of the heel piece of the embodiment of the fastening system of Figure 1, in the presence of a hiking shoe.

2C shows a partial longitudinal sectional view of the embodiment of the fixing system of Figure 1.

FIG. 2D represents a perspective view of the rear stop of the fastening system of FIG. 1.

Figures 3A and 3B show bottom views of the embodiment of the fastening system of Figures IA and IB, respectively, with the beam, in the heaving position and without the beam, in the boot position.

Figure 4 is a detail view in section of the assembly between the carriage and the beam of the fixing system of the invention according to the embodiment of Figure 1.

Figures 5A and 5B show perspective views of two alternative embodiments of the elastic return element of a fastening system according to the invention.

For clarity, identical or similar elements are identified by identical reference signs in all of the figures.

DETAILED DESCRIPTION OF EMBODIMENTS Naturally, the embodiments illustrated by the figures presented above are given only by way of nonlimiting examples. It is explicitly provided that we can combine these different modes and variants to propose others.

The gliding board on which the fastening system of Figure 1 is intended to be mounted, is used for the practice of ski touring and allows to evolve both uphill and downhill.

Such a binding system for ski touring comprises, in a traditional manner, a front stop comprising a base E fixed on the board (not shown), wedging means K and clamping means S of the front part d 'a shoe C (visible in Figures 2A and 2B).

In the embodiment of Figure 1, the clamping means S consist of a strap which is advantageously adjustable in the transverse direction to position the attachment loop on the top of the foot, regardless of the size of the shoe. More specifically, the strap S is produced in a single part and can slide inside a channel A produced inside the base E.

This fastening system further comprises means for supporting the rear part of the shoe C. These support means consist of a beam 1 articulated on the base E and intended to jointly support a carriage 2 and a heel 3 connected to the carriage 2 by an elastic return element 5. The return element 5 is mounted between the beam 1 and the heel 3, as illustrated in FIGS. 3A and 3B.

The articulation of the beam 1 comprises a transverse axis X housed in conduits, both in the rear end of the base E and in the front end of the beam 1 and nested in one others. This articulation allows, in known manner, the upward and forward pivoting of the support means for the rear part of the shoe. The shoe used is preferably a shoe with a flexible sole, this articulation makes it possible to maintain the flexion of the shoe in the area of the metatarsals.

The longitudinal position of the carriage 2 on the beam 1 is adjustable depending on the size of the shoe C. For this purpose, the carriage 2 is movable longitudinally and its final position can be locked. The movement of the carriage 2 also causes the heel 3 to move along the beam 1.

The heel piece 3 comprises a horizontal shoe 31 on which the heel of the shoe C rests. The shoe 31 has, on the one hand, a central slot 32 in which the carriage 2 is embedded and, on the other hand, longitudinal guide lugs 33 which slide on the lateral sides of the beam 1.

When the position of the carriage 2 on the beam 1 is adjusted and locked to adapt to the length of the shoe, the shoe 31 can still slide axially on the beam 1 with a small longitudinal movement by exerting traction on the return element 5, in particular, at the time of putting on and taking off. In the final position for longitudinal adjustment of the carriage 2 and under the action of the return element 5, the heel piece 3 abuts and bears behind the heel of the shoe C, as illustrated in FIGS. 2A and 2B.

In known fastening systems, the support means for the rear part of the shoe are generally associated with a second strap mounted at the rear of the heel and making it possible to immobilize the shoe. The invention aims to improve these fastening systems by seeking to overcome this strap without weakening the holding of the shoe and improving the safety of the skier.

For this purpose and according to the invention, the heel piece 3 extends rearwards and upwards by a rear stop intended to come into contact with the rear part of the upper of the shoe. In the illustrated embodiment, this rear stop comprises a rigid frame 34, the upper part of which carries a collar 4 having a holding portion 42 and a fitting portion 41. This collar is a collar open towards the front of the fastening system . Indeed, this collar rests against the rear part of the shoe and does not cover the front part of the upper of the shoe which remains completely free.

The collar 4 is made of a material different from that of the rigid frame 34 and is made, preferably, of a more flexible material, intended to marry and to bear against the rear part of the rod. shoe C. In another embodiment not shown, the collar and the frame could be made in one piece.

The profile of the collar 4 can be adapted to different models and sizes of shoes and is therefore made, at least on its holding portion 42, in a deformable or malleable material of the plastic or elastomer type (for example, TPU d '' a hardness between 35 and 50 ShoreD) whose surface condition can be adapted locally to the material of the shoe to strengthen their mutual bonding contact.

Jointly, the elastic return element 5 has a stiffness such that, when it is under tension, due to the positioning and maintenance of the shoe C in the binding, the support efforts of the heel piece 3 on the rear of the shoe C and, in particular, of the frame 34 on its lower part and its heel, on the one hand, and of the collar 4 on its upper, on the other hand, are greater than 50N. These support forces are preferably between 50N and 200N, depending on the size of the shoe. This preload applied to the shoe ensures that it is held and locked sufficiently and reliably for the uphill and downhill movements.

With these conditions, the fitting of the shoe in the fastening system is accompanied by a stretching of the return element 5 allowing a retraction of the heel between 5mm and 40mm relative to its rest position in which the shoe 31 is in contact with the carriage

2. The invention thus provides a compromise between easy putting on and secure holding of the shoe in the uphill and downhill binding.

As illustrated in Figures 2A, 2B and 2C, the collar 4 has a holding portion 42 in its lower part which is substantially vertical to ensure the maintenance of the shoe in the fastening element when the shoe is in position pavement. The collar 4 also includes a portion of footwear 41 in its upper part which has a flared upper ramp for guiding the shoe to facilitate putting on, that is to say the entry of the shoe into the heel 3 of the system of fixation.

This ramp is inclined upwards and backwards by an angle a between 25 ° and 45 ° and, preferably, around 35 ° relative to the vertical.

The ramp of the fitting portion 41 has a height HI of between 15 and 30mm and preferably around 20mm and its front face is smooth to facilitate the sliding of the shoe during putting on and allow the heel to position themselves correctly. The footwear therefore has the effect of rolling back the shoe 31 by tensioning the return element 5 to allow the shoe to descend and be introduced into the fastening system.

The holding portion 42 has a height H2 of between 10 and 30mm and preferably between 15 and 20mm and the surface condition of its front face is preferably grained in order to ensure contact of friction with the material of the shoe and, as a result, better grip on the upper of the shoe and better hold in the fastening system.

The collar also has a connecting portion 43 with the rigid frame 34.

In the embodiment shown in the accompanying figures, the frame 34 is delimited here by at least two uprights 34a, 34b whose upper ends are connected to the connecting portion 43 of the collar 4 while being engaged in orifices 40 thereof and locked, for example, by clipping.

The collar 4 thus forms a transverse connecting spacer between the uprights 34a, 34b.

The removable mounting of the collar 4 on the frame 34 makes it possible, on the one hand, to adapt the collar to the type of shoe by choosing, in particular, a suitable form of collar 4 and, on the other hand, to easily replace it in the event of breakage or wear. Any other reversible mounting means could of course be used.

The uprights 34a, 34b, of the frame 34 have a height H3 of between 30 and 80mm and, preferably, between 40 and 50mm, this in order to position the collar 4 at an optimal vertical position at the rear of the shoe upper. These uprights 34a, 34b are here produced in the form of triangular dihedral delimiting, behind the shoe 31 and towards the front of the binding, a housing for the rear part of the shoe. The shoe 31 and the frame 34 are produced here in one piece from a sufficiently rigid material (aluminum, plastic filled with glass fibers such as, for example, charged polyamide or charged ABS, etc.) to ensure the transmission of forces on the collar 4.

In the embodiment illustrated by the appended figures, the uprights 34a, 34b are perforated to optimize the flexibility of the frame 34 and lighten the structure of the heel piece.

According to other variants not shown, the frame may take the form of a shoe or a shell whose geometries are complementary to that of the lower part of the shoe C.

The variants of Figures 2A and 2b apply to different hiking shoes. In the variant of FIG. 2A, the uprights 34a, 34b of the frame 3 are short because the shoe is relatively low while in the variant of FIG. 2B, the uprights 34a, 34b are higher to adapt the frame 3 to a rising shoe. It is expected that the height H3 of the amounts is between 30 and 80mm, depending on the size and type of shoe; an interesting compromise for the adaptation to many forms of shoes being that H3 is between 40 and 50mm.

According to a variant not shown, the orifices 40 of the collar 4 are produced in the form of conduits forming "passers-by" in which the ends of the uprights 34 are introduced and can slide in the vertical direction. In this case, the ends of the uprights 34 are advantageously provided with notches cooperating detachably with reliefs formed on the internal wall of the conduits to delimit predetermined positions for adjusting the vertical position of the collar 4 relative to the shoe 31.

The collar 4 is in the form of a hoop and preferably has lateral fins 4a, 4b which participate in the lateral support of the rear of the shoe. These fins can be longer or shorter to adapt to different shoe shapes. Where appropriate, these fins 4a, 4b have a transverse elasticity allowing them to pinch the lateral flanks of the shoe C, thereby strengthening its retention in the fastening system.

Figures 3A and 4 show the beam 1 supporting the heel piece 3 and the carriage 2. As illustrated in Figures 1 and 3A, the length of the beam at rest, before fitting, is greater than the cumulative length of the heel piece 3 and the carriage 2. After attaching a shoe, the heel piece 3 retreated onto the beam 1 by pulling on one of the ends of the return element 5, the other end being fixed on the carriage 2, itself previously locked on the beam 1. The rear stop of the heel therefore applies a compressive force to the rear of the shoe which is determined by the stiffness of the selected return element 5.

As illustrated in a bottom view by FIG. 3A, the central part of the beam 1 comprises bridges 11 delimiting cells 10 making it possible to lighten the structure and in which pins 21 are anchored carried by the lower face carriage 2.

As illustrated in Figure 1, the side edges 12 of the beam 1 are raised by forming two guide rails of the heel piece 3. The cross section of the beam 1 thus has a shape in reverse Omega (Ω) or in U which stiffens it by compensating for the weakness of the perforated central part.

In parallel, the underside of the shoe 31 of the heel piece 3 carries retaining tabs in the vertical direction and guide 33 in the longitudinal direction extending under the lateral edges 12 of the beam 1 (FIGS. 3A and 3B) . Where appropriate, the upper face of the lateral edges 12 of the beam carries transverse notches cooperating with complementary notches located under the heel piece 3 in order to delimit predefined stop positions on the beam 1.

The carriage 2 carries pins 21, projecting on either side of its underside. These pins are intended to be anchored in the cells 10 to lock the position of the carriage 2 on the beam 1, prior to fitting.

In order to optimize the resistance to mechanical stresses to which the carriage 2 is subjected, the pins 21 are distributed here in two lateral series of four pins, as illustrated in FIG. 3A.

The pin located at the rear of each series is longer than the other three in order to avoid the separation of the carriage 2 when the beam 1 bends when lifting, especially during the uphill movement.

In order to restrict the lifting of the beam 1, in particular, during the downhill movement, the invention optionally provides for mounting on the ski board, under the beam 1 and behind the heel piece 3, a locking cam (not shown) cooperating with the cells of the beam 1 to prevent it from lifting.

As illustrated in detail in Figure 4, at least the front face 21a of the pins 21 is inclined downward and towards the rear of the fixing element with an angle between 3 ° and 10 °. This configuration which can be accompanied by a cross section with bevelled faces 11a of the bridges 11, makes it possible to optimize the support forces F of the pins 21 against the bridges 11 and to secure the anchoring and the locking of the carriage 2 on beam 1.

The return element 5 provides the elastic connection between the heel piece 3 and the carriage 2 and allows, by extension, to adjust the spacing necessary to introduce and fix the shoe C. This return element is essential because it guarantees keeping the shoe on the board and must therefore be mechanically resistant over time and whatever the constraints applied to the binding.

The return element 5 is fixed by its front end 5a to a lug 22 carried by the underside of the carriage 2 and, by its rear end 5b, to a similar lug 35 carried by the underside of the heel piece 3, as illustrated by the bottom view of FIG. 3B. The lugs 22, 35 have a bent end facing outwards, making it possible to block the return element 5, thereby avoiding the risk of escape.

FIG. 5A shows a first embodiment of the invention in which the return element 5 consists of a ring with an oblong central hole 50 of uniform thickness. The pins 22, 35 are introduced at the respective longitudinal ends 5a, 5b of the central hole of the ring, as illustrated in FIG. 3B.

5B shows a second embodiment of the invention in which the return element 5 consists of a solid tongue of uniform thickness having a central constriction 51 and provided, at each of its longitudinal ends 5a , 5b, of an orifice 50a, 50b. for fixing, respectively, to the pins 22, 35 of the carriage 2 and the heel piece 3.

These two forms of elastic return elements illustrated make it possible to increase their resistance at the level of the areas in contact with the pins 22.35. Preferably the return element 5 is made with an elastomeric material but it is possible, in other embodiments not shown, to use a return spring.

It follows from the above that the invention allows to provide a fastening system for a shoe with flexible sole, the shoe being held by a strap on the front and only by the rear support of the heel against the back of the shoe. This support is obtained by applying a sufficient compression force to the rear of the shoe to block it during the use of the gliding board up and down.

The compression force is chosen in such a way that the support of the shoe is sufficient but also that the shoeing force is not too great so that the shoeing remains easy improved by the slope of the ramp forming the portion of the fastening system.

This compromise has been found and is fitting which is chosen by the fitting of the rear stop

Claims (12)

1. System for attaching a boot (C) to a ski touring board comprising, on the one hand, a front stop comprising, a base (E) fixed on the board as well as wedging means (K) and tightening (S) of the front part of the shoe (C) and, on the other hand, means for supporting the rear part of the shoe comprising a beam (1) articulated on the base (E) and supporting, jointly, a movable trolley (2) provided with locking means and a heel piece (3) connected to said trolley by an elastic return element (5) and sliding axially on said beam (1) bearing behind the heel of the shoe ( C), characterized in that said heel piece (3) comprises a rear stop provided with a collar (4) intended to bear against the rear part of the upper of the shoe (C) and having a holding portion (42 ) and a portion of footwear (41). 2. Fastening system according to claim 1, characterized in that the holding portion (42) of said collar (4) is substantially vertical, while the fitting portion (41) has a ramp flared upwards and towards the back. 3. Fastening system according to claim 1 or 2, characterized in that the rear stop comprises a rigid frame (34) which carries the collar (4). 4. Fastening system according to claim 3, characterized in that said collar (4) has a connecting portion (43) with said rigid frame (34). 5. Fastening system according to one of claims 3 or 4, characterized in that said rigid frame (34) is delimited by at least two uprights (34a, 34b) whose upper ends are connected to the collar (4). 6. Fastening system according to one of claims 3 to 5, characterized in that the upper ends of the uprights (34a, 34b) are removably engaged in holes (40) of the collar (4) which thus forms a spacer cross link. 7. Fastening system according to one of the preceding claims, characterized in that the collar is in the form of a hoop. 8. Fastening system according to claim 1 or 2, characterized in that said elastic return element (5) has a stiffness such that the support efforts of the heel piece (3) on the rear of the shoe (C) are greater than 50N, regardless of the size of the shoe. 9. Fastening system according to one of the preceding claims, characterized in that said elastic return element (5) consists of a ring of uniform thickness provided with an oblong central hole (50), the ends of the hole oblong being connected respectively to the carriage (2) and to the heel piece (3). 10. Fastening system according to one of claims 1 to 8, characterized in that said elastic return element (5) consists of a solid tongue of uniform thickness having a central constriction (51) and provided each with its longitudinal ends (5a, 5b) of an orifice (50a, 50b) for fixing, respectively, to the carriage (2) and to the heel piece (3). 11. System of fixing according to 1 'a of claims previous, characterized in that the heel piece (3) present a central recess (32) in which is embedded said carriage (2). 12. System of fixation according to 1 'a of previous claims, characterized in what the central part of said beam (1) includes of bridges (11) delimiting cells (10) in which come to anchor pions (21) carried by the face lower of said carriage (2). 13. System of fixation according to the previous claim , characterized in this that said pins (21) protrude of leave and else of the face lower carriage (2) • 14. System of fixation according to 1 'a of Claims 12 or 13, characterized in that said carriage (2) carries two lateral series of four pins (21), the pin located at the rear of each series being longer than the other three. 15. Fastening system according to one of claims 12 to 14, characterized in that said cells (10) cooperate with a cam for locking the beam (1) carried by the upper face of the board. 16. Hiking board equipped with a fastening system according to one of the preceding claims.