EP2078542A1 - Device for attaching a boot to a snowboard - Google Patents

Abstract

The device has lower front and rear support elements (10, 18) on which bottom parts (9, 17) of front and rear ends (3, 5) of a shoe sole are supported, respectively. The support element (10) is extended from a lower part of a body (7) of a front safety fixation i.e. stop (4), to form a front monoblock assembly (11). The support element (18) is extended from a lower part of a body (15) of a rear safety fixation i.e. heelpiece (6) to form a rear monoblock assembly (19). The support element (10) has an upper surface that is provided with a sliding plate i.e. antifriction plate.

Description

The present invention relates to a device for retaining a snowboarding board on snow such as a ski or the like.

In a manner known per se, the boot of the skier, in the case of a so-called alpine type ski, is held on the ski so as to be triggerable, by its front end, by a front safety fastener commonly called a "stop" and, its rear end, and in particular its heel, thanks to a rear safety fastener commonly called "heel".

Each of the bindings, stop and heel are designed to retain the corresponding front and back end of the sole of the shoe. For the front is the stop that fits and retains the front end and for the back is the heel that snaps and retains the rear end, while the underside of the sole is supported for the front on a front lower support element and for the rear on a rear support element.

It is known that, for good skiing, the boot must, in a position of restraint on the ski, be in a precise and precise longitudinal position on the ski, to allow proper skiing practice. Thus, the manufacturers affix in the manufacture of skis to make a marking, which must correspond to the middle of the sole of the shoe, when it is retained on the ski. Similarly, ski boot manufacturers indicate by marking the middle of the shoe. When mounting the ski bindings, the front and rear bindings must be fixed to the ski in determined longitudinal positions, so that the middle of the shoe matches the marking made on the ski.

In the traditional way the front and rear lower support elements are constituted by independent elements respectively of the stop and the corresponding heel, which poses a major problem of positioning when adjusting in longitudinal position of the abutment and / or the heel.

Thus, the device for retaining a boot on a board gliding on snow the shoe that is retained by its front end, by a front fastener security commonly called "stop" and, by its rear end, including his heel by means of a rear safety fastener commonly referred to as "heel", the abutment and the heel piece comprising a body respectively on which is pivotally mounted about a respectively vertical and horizontal axis a retaining jaw respectively, while the device comprises a front lower support element on which the underside of the front end of the sole is supported, and a lower rear support element on which the underside of the rear end of the sole is supported, is according to the invention, characterized in that the rear lower support element of the heel is constituted by the extension of the lower part of the body to form a one piece rear assembly, which is of one and the same piece

According to a complementary feature, said extension extends at least in the space disposed inside the jaw under the rear of the sole of the boot while a ski brake is pivotally mounted on the rear element of the boot. lower support.

According to another feature, in order to allow the removal of the brake, the transverse pivoting hole of the latter, made in the support element, is open downwards while the support element comprises in addition two clearances forward leading to the front and down.

Note that the one-piece assembly, consisting of the body and its lower back support element is made of plastic, such as an acetal resin, polypropylene or polyamide.

Let us add that according to another characteristic, the rear one-piece assembly cooperates with a slide made in a rear retaining piece, to be able to slide longitudinally and be locked in longitudinal position chosen by means of a latch system, while the longitudinal sliding of the one-piece assembly is made through a slide made in the rear retaining piece, while each of the side edges of the rear one-piece assembly comprises a lateral groove which extends over the entire length of the assembly which is in cooperation with the slide.

According to the preferred embodiment of the invention, the transverse pivoting arms of the ski brake which pivot in the transverse pivoting hole are held downwards in the mounted position by the lateral edges of the retaining piece, while the lower abutment support is constituted by the extension of the lower part of the body to form a front monobloc assembly.

10- A device for retaining a boot on a snowboard on snow according to the preceding claim, characterized in that the lower bearing member comprises a sliding plate.

Other features and advantages of the invention will become apparent from the description which follows with reference to the accompanying drawings which are given by way of non-limiting examples.

The figure 1 is a side view of a ski equipped with retaining fasteners of the invention, the shoe being in the retaining position.

The figure 2 is a side view of the front stop, without the jaw and its elastic system, that is to say the stop body and its extension serving as a downward support for the shoe.

The figure 3 is a side view of the rear heel piece, without the jaw or its heaving lever, or its elastic system, that is to say the heel piece and its extension serving as a downward support for the shoe.

The figure 4 is a perspective representation of the monoblock assembly before.

The figure 5 is a perspective representation of the rear monobloc assembly.

The figure 6 is a perspective top view showing the retaining pieces.

to the figure 7 is a view similar to the figure 5 , but the one-piece rear assembly with its ski brake.

As it appears in figure 1 , the boot (1) of the skier is held on the ski (2) triggerably, by its front end (3), by a forward safety fastening (4) commonly called "stop" and, by its rear end, and in particular its heel (5), thanks to a rear safety fastener (6) commonly called "heel".

The boot (1) must, in the retaining position on the ski, be in a longitudinal position (Pc) determined on the ski. This position must be such that the middle of the sole (Mc) corresponds to a marking (Ms) usually made on the ski (2) by its manufacturer.

The abutment (4) intended to retain the front of the boot by the front end of the sole, is constituted in a manner known in that of a body (7) on which is mounted pivotally about a vertical axis (X, X '), a retaining jaw (8). The body of the abutment comprises, in a manner known per se, an elastic system, generally a compression spring which is intended to hold the jaw in a centered position, while allowing it to pivot laterally in order to release the boot in the event of a dangerous solicitation for the skier's leg, the lateral pivoting being done against the action of the elastic system.

The jaw (8) of the abutment (4) is intended to hold the front end (3) of the boot both laterally and vertically upwards. For this purpose the jaw (8) engages the front of the sole of the boot while the underside (9) of the front end (3) of the sole is supported downward on a front lower support member (10).

According to the invention the front lower support element (10) is constituted by the extension of the lower part of the body to form a front monoblock assembly (11), which is of one and the same piece. Said lower support element (10) extends towards the center of the ski, at least in the space disposed inside the jaw under the front of the sole. The one-piece front assembly (11) is for example made of plastic material by injection, said plastic being for example an acetal resin, polypropylene or polyamide or other.

It will be added that the upper surface (100) of the front lower support element (10) advantageously comprises a sliding plate (101), such as an anti-friction plate made for example of polyethylene or of polytetrafluoroethylene (PTFE). Note that the top of the front lower support element may also include a movable plate laterally to accompany the lateral displacement of the shoe.

Furthermore the stop is slidably mounted longitudinally on a front retaining piece (12) integral with the ski and for example fixed on the upper surface (13) of the ski (2). Thus the lower part of the one-piece front assembly (11) constituted by the body (7) and the support element cooperates with a slideway made in the support piece, to be able to slide longitudinally and be locked in longitudinal position chosen by to a lock system.

In other words, the stop (4) is slidably mounted on the front retaining piece (12) to be retained after adjustment in position, in a given longitudinal position. For this purpose the front monobloc assembly (11) cooperates with the front retaining piece by means of a slide and slider system, while the stop comprises a movable latch advantageously biased in the locking position by an elastic system such as a spring , said latch comprising a toothing, intended to cooperate with complementary means made on the front retaining piece (12) such as a toothing (14) constituted by a succession of teeth. The latch can be lifted preferably manually or with a suitable tool to allow easy adjustment. Note that the front slide (120) of the front retainer (12) is open rearwardly, so that the stop can be removed from its rear retaining piece by sliding backwards. Of course, one could provide an opening to the front without departing from the scope of the invention.

In order to effect the sliding and retention of the stop (4) in the front slide (120), each of the side edges of the front one-piece assembly (11) comprises a lateral groove (110) which extends over the length of the one-piece front assembly (11). It has therefore been understood that because body (7) extends from its lower part towards the rear to form the front lower support member (10) the length (L1) of sliding in the slide is important which allows a perfect sliding, and excellent restraint up.

The heel (6) intended to hold the heel of the boot by its rear end of the sole, is constituted in known manner by either a body (15) on which is mounted pivotally about a transverse horizontal axis ( Y, Y '), a retaining jaw (16). The body (15) of the heel (6) comprises in known manner an elastic system, generally a compression spring which is intended to hold the jaw in the heel holding position, while allowing it to pivot upwards in order to to release the boot in case of dangerous solicitation for the skier's leg, the lateral pivoting being against the action of the elastic system.

The jaw (16) is intended to fit the rear of the sole of the shoe while the underside (17) of the rear end of the sole is supported downward on a rear lower support element (18) .

According to the invention the rear lower support element (18) is constituted by the extension of the lower part of the body to form a rear monobloc assembly (19), which is of one and the same piece. Said rear support member (18) extends towards the center of the ski, at least in the space disposed inside the jaw under the rear of the sole. The rear monoblock assembly (19) is for example made of plastic material made by injection, said plastic being for example an acetal resin, polypropylene or optionally loaded polyamide, or other.

Furthermore the heel (6) is slidably mounted longitudinally on a rear retaining piece (12 ') integral with the ski and for example fixed on the upper surface (13) of the ski (2). Thus, the lower portion of the rear one-piece assembly (19) constituted by the body (15) and its front extension constituting the lower rear support member (18) cooperates with a slideway made in the support piece, in order to be able to slide therein. longitudinally and be locked in longitudinal position chosen through a lock system.

In other words, the heel (6) is slidably mounted on the retaining piece (12 ') to be retained after adjustment in position, in a given longitudinal position. For this purpose the rear monoblock assembly (19) cooperates with the retaining piece (12 ') by means of a slide and slider system, while the said attachment comprises a movable latch advantageously biased in the locking position by an elastic system such as a spring, said lock comprising a toothing, intended to cooperate with complementary means made on the front retaining piece such as a toothing (14 ') constituted by a succession of teeth. The lock can be lifted preferably manually or with a suitable tool to allow easy adjustment. Note that the rear slide (120 ') of the rear retaining piece (12') is open towards the rear so that the heel piece can be removed from its rear retaining piece by sliding backwards.

In order to effect the sliding and retaining of the heel (6) in the slide (120 '), each of the side edges of the rear one-piece assembly comprises a lateral groove (110') which extends along the length of the rear one piece assembly (19), at least in its part in cooperation with the slide. It is understood that thanks to the fact that the body (15) is extended by its lower part forward to form the rear lower support element (18) the length (L2) of sliding in the slide is important which allows a perfect sliding, and excellent retention upwards.

It has been understood that the rear support element (18) serves as a downward support for the heel, but it will also be added that this element that is part of the rear one-piece assembly also serves as a retainer for the brake ski (20). Thus the ski brake (20) is pivotally mounted on the rear lower support member (18) and thus on the rear one piece assembly (19). It will also be added that the brake is removably mounted so that it can be easily removed from its support (18), once the heel removed from its retaining slide. In order to allow the removal of the brake, it will be noted that the transverse pivoting hole (180) of the latter, made in the bearing element (18), is opening towards the bottom (BA) as shown more particularly to the figures 3 , 5 and 7 , while the support member further comprises two front clearances (181, 181 ') opening towards the front (AV) and down (BA). Furthermore, it has also been understood that the transverse pivoting branches (200a, 200b) of the ski brake that pivot in the transverse pivoting hole (180) are held downwards in the mounted position by the lateral edges (121a, 121b) of the retaining piece (12 ').

Note that the retaining slides (120, 120 ') may not be made by pieces attached to the ski as illustrated but be an integral part of the ski. It should also be added that the two front (120) and rear (120 ') retaining slides can be either independent or monobloc made by a single piece advantageously mono material. When they are independent they can advantageously comprise a central reciprocal nesting.

Of course, the invention is not limited to the embodiments described and represented by way of examples, but it also includes all the technical equivalents as well as their combinations.

Claims (12)

Device for retaining a shoe (1) on a board for gliding on snow (2) the boot being retained by its front end (3), by a front safety fastening (4) commonly known as a "stop" and, by its rear end, and in particular its heel (5), thanks to a rear safety attachment (6) commonly called "heel", the stop (4) and the heel (6) comprising a body respectively (7, 15) on which is pivotably mounted about a vertical and horizontal axis respectively a retaining jaw respectively (8, 16), while the device comprises a front lower support member (10) on which rests the underside (9) of the front end (3) of the sole, and a lower rear support member (18) on which the underside (17) of the rear end (5) of the sole is supported, characterized in that the lower back support element (18) of the heel piece is constituted by the extension of e the lower part of the body (15) to form a rear one piece assembly (19), which is in one and the same piece Device for retaining a boot on a board for gliding on snow, according to the preceding claim, characterized in that said extension extends at least in the space disposed inside the jaw under the rear of the soleplate of the boot and that a ski brake (20) is pivotally mounted on the lower back support member (18). Device for retaining a boot on a gliding board on snow, according to the preceding claim, characterized in that, in order to allow the removal of the brake, the transverse pivoting hole (180) of the latter, made in the support member (18), is open downwardly while the support member further comprises two front clearances (181,181 ') opening towards the front (AV) and downward (BA). Device for retaining a boot on a snow-sliding board according to any one of the preceding claims, characterized in that the one-piece assembly (19) constituted by the body (15) and its rear lower support element (18) is made of plastic. Device for retaining a boot on a gliding board on snow according to the preceding claim, characterized in that the plastic material is an acetal resin, polypropylene or polyamide. Device for retaining a boot on a snow gliding board according to any one of the preceding claims, characterized in that the rear one-piece assembly (19) cooperates with a slide made in a rear retaining piece (12 '). , to be able to slide longitudinally and be locked in selected longitudinal position through a lock system. Device for retaining a boot on a gliding board on snow according to the preceding claim, characterized in that the longitudinal sliding of the one-piece assembly is done through a slide (120 ') made in the rear retaining piece, while that each of the side edges of the rear one-piece assembly comprises a lateral groove (110 ') which extends over the entire length (L2) of this assembly (19) which is in cooperation with the slide. Device for retaining a boot on a gliding board on snow according to the preceding claim, characterized in that the transverse pivoting branches (200a, 200b) of the ski brake which pivot in the transverse pivoting hole (180) are retained towards the bottom in the mounted position by the side edges (121a, 121b) of the retaining piece (12 '). Device for retaining a boot on a snowboard according to one of the preceding claims, characterized in that the lower bearing element (10) of the abutment (4) is constituted by the extension of the lower part of the body (7) to form a front one-piece assembly (11). Device for retaining a boot on a snowboard according to the preceding claim, characterized in that the lower support element (10) comprises a sliding plate (101). Device for retaining a boot on a gliding board on snow according to the preceding claim, characterized in that the stop (4) is slidably mounted longitudinally on a front retaining piece (12) integral with the ski. Device for retaining a boot on a gliding board on snow, according to the preceding claim, characterized in that the lower part of the front one-piece assembly (11) constituted by the body (7) and the support element cooperates with a slide made in the support piece, to be able to slide longitudinally and be locked in selected longitudinal position through a lock system.

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