FR2909564A1 - Shoe fixing device for use with ski, has movable parts that are formed such that pressure exerted on shoe's front part provokes movement of parts in space to make vertical and lateral shoe maintaining units become inactive - Google Patents

Abstract

The device has front and rear fixing elements with movable parts (20, 21) juxtaposed in a transverse direction. Each movable part is provided with lateral shoe maintaining units (22, 23) and vertical shoe maintaining units (24, 25) mounted pivotably to have space relative to each other. The parts (20, 21) co-operating with a pressure unit (3) are maintained together on front and rear parts of a shoe such that the units are active. The parts (20, 21) are formed such that pressure exerted on the front part provokes movement of the parts (20, 21) in the space to make the units become inactive.

Description

The present invention relates to a device for fixing a

  shoe on a ski, to securely maintain a shoe on a ski. The devices for attaching a boot to a ski comprise on the one hand a rear fastening element adapted to hold the rear part of the boot, through lateral holding means and vertical holding means, and to exert pressure on said rear portion for pressing said shoe forward, and secondly a front attachment member which is adapted to maintain the front of the shoe, through lateral holding means and vertical holding means, and to form abutment in response to the push exerted by said rear attachment member. The shoes have a suitable shape. They include a base having a standardized profile, which serves as an interface and allows cooperation with the front and rear fasteners. These fasteners are designed to allow the automatic release of the shoe in case of excessive effort.

  Thus the front fastening element can move laterally in case of lateral force to allow the shoe to escape the holding means, while the rear fastening element can retract backwards in case of forward effort, that is to say, when the heel comes off, so that the heel escapes the vertical holding means. The combination of these two functions allows the release of the shoe in all directions except in the case of a forward effort of the ski, that is to say when the shoe initiates a forward movement of the shoe. ski, which corresponds for example to the case of the skier's fall on the back of his skis and the meeting of an obstacle. This case is common in the beginner, and it can generate serious trauma. The present invention aims to overcome this disadvantage by providing a device for attaching a boot to a ski, which allows the release of the shoe 2909564 2 forwards and, possibly, also towards the rear, while retaining all other shoe release capabilities provided by known fasteners. The device for attaching a boot to a ski according to the invention comprises on the one hand a rear fastening element able to hold the rear part of the boot, through lateral holding means and vertical holding means, and exerting pressure on said rear portion to press said shoe forward, and on the other hand a front attachment member which is adapted to maintain the front of the boot, through lateral holding means and vertical holding means, and to form a stop in response to the pushing action exerted by said rear fastening element, and it is essentially characterized in that on the one hand said front fastening element 15 and / or said rear fastening element, comprises two pieces juxtaposed in the transverse direction, each provided with a lateral holding means and a vertical holding means, and which are pivotally mounted so as to be able to move away from one another. 'other; in that on the other hand said parts cooperate with a pressure means, of adjustable intensity, able to keep them close to one another and closed on the front part, and / or rear, of the shoe. so that said lateral holding and vertical holding means are active; and in that on the other hand said movable parts are shaped so that an excessive pressure of the boot exerted on said front or rear attachment causes the pivoting of at least one of said moving parts apart, so that said holding means become inactive.

According to an additional characteristic of the fixing device according to the invention, the vertical holding means are each in the form of an abutment, or overhang, extending horizontally and disposed on the outer side, and in which is intended to come to wedge a part of the shoe.

The shoe is prevented from being detached from the ski by being held by the vertical holding means of the moving parts, which become inactive during the pivoting of one or the other of said parts.

According to another additional feature of the fastening device according to the invention, it comprises means making it possible, after the holding means have been made inactive, to favor the escape of the boot towards the front, or towards the 'back.

According to a particular embodiment of the fastening device according to the invention, each movable piece has in the region between the lateral holding means and its pivot axis, an inclined ramp, lowered towards the location intended to receive the shoe.

During the spacing of one or both parts under the action of excessive pressure of the boot, it engages the ramps so as to escape completely from the attachment from the front, or from the rear according to the fixation considered.

According to another additional characteristic of the fixing device according to the invention, the pressure means, of adjustable intensity, comprises a spring means associated with a locking element adapted to come into contact with the moving parts so as to force them by pressure, to close on the shoe. According to another additional feature of the fastening device according to the invention, each movable part has on the opposite side, with respect to its axis of pivoting, to the lateral and vertical holding means, an extension 30 forming a lever, against which is supported a cam pressed by the spring means. According to a particular embodiment of the fastening device according to the invention, the two moving parts pivot in two distinct axes.

According to one variant, the two moving parts pivot on two pivots of convergent axes.

According to another additional feature of the fixing device according to the invention, the two moving parts each comprise an arm pivotally mounted along an axis parallel to the ski plane and converging towards the front or towards the rear of the ski, according to said movable parts are part of an attachment respectively front or rear, said arm comprising at the upper end above said pivot axis, the vertical holding means, and below said pivot axis, the lateral holding means.

According to another additional feature of the fastening device according to the invention, the lateral holding means are each in the form of a wall substantially perpendicular to the ski plane, and forming with the longitudinal axis of the latter an open angle towards the location provided for receiving the shoe. During an excessive pressure of the boot against one and / or the other side holding means of one or both moving parts, the thrust against the oblique wall or walls generates the spacing of the one or more parts , and therefore the release of the shoe. According to another additional feature of the fastening device according to the invention, the lateral holding means comprises a member pivotally mounted along an axis perpendicular to the direction of the thrust of the boot, and carrying two rollers in free free rotation on pivot pins. axes parallel to said pivot axis of said element, and against which rollers is intended to come to bear the shoe. According to a particular embodiment of the fastening device according to the invention, the rear fastening element 30 comprises a support plate carrying lateral and vertical holding means, and which is pivotally mounted along an axis transverse to the ski, or in longitudinal translation, on a shoe fixed to said ski. The advantages and characteristics of the device according to the invention will become more clearly apparent from the description which follows and which refers to the appended drawing, which represents several non-limiting embodiments thereof. In the accompanying drawing: - Figure 1 shows a schematic simplified perspective view a fastening device according to the invention. - Figures 2a, 2b and 2c show schematic plan views of the same device in different operating configurations. - Figure 3 shows a partial schematic view in 10 pers of a variant of the same device. - Figure 4 shows a partial schematic perspective view from below of a variant of the same device. FIGS. 5a and 5b show partial perspective views of another variant of the same device, in two different operating configurations. - Figure 6 shows a partial schematic plan view of another variant of the same device. FIGS. 7a and 7b show partial perspective views of another variant of the same device, in two different operating configurations. - Figure 8 shows a schematic perspective view of a portion of the device shown in Figures 7a and 7b. FIGS. 9a and 9b show partial perspective views of another variant of the same device, in two different operating configurations. With reference to FIG. 1, it is possible to see a device for attaching a boot to a ski according to the invention, in this case a front binding, knowing that the present invention can also be applied to a rear binding 30 like this. will be seen further. This front fixing device essentially comprises a support plate 1 intended to be fixed on the ski, not shown, a locking means 2 of the shoe, not shown, and cooperating with the latter, a pressure means 35 3.

The locking means 2, intended to cooperate with the rear attachment, not shown, comprises two parts 20 and 21, of symmetrical shapes, pivotably mounted on the plate 1 through two pivots, respectively 10 and 11, in so that you can move away from each other. The pivoting of the moving parts 20 and 21 is made on the opposite side to that intended to come into contact with the boot. Note that the support plate 1 has a stop 12 which projects from the plane against which can slide the movable parts 20 and 21, and between them so as to allow their pivoting only outwardly. Note also that it is possible, according to one variant, that the moving parts 20 and 21 can pivot on the same pivot, the parts 20 and 21 being in this case configured differently. The moving parts 20 and 21 each comprise a lateral holding means of the shoe, respectively 22 and 23, and a vertical holding means, respectively 24 and 25. The lateral holding means 22, 23, consists of a vertical wall 20 positioned the outer side of the moving parts 20, 21, and intended to come laterally in contact with a portion of the front of the boot, while the vertical holding means 24, 25, is in the form of an overhang , which extends above the lateral holding means 22, 23, and which is intended to cover a part of the front of the boot, which bears on the plate 1, in order to prevent its detachment . It should be noted that the vertical walls constituting the lateral holding means 22, 23 are oblique with respect to the longitudinal axis of the ski, so as to form an open angle towards the end intended to receive the front portion of the ski. the shoe. In addition, the moving parts 20 and 21 have, between the pivots 10 and 11 and the lateral holding means 22 and 23 and vertical 24 and 25, an inclined plane, respectively 26 and 27, lowering towards the zone of 2909564 7 receipt of the shoe. The lowest end of the inclined planes 26 and 27 is intended to receive the end of the shoe, so that it is maintained between the inclined planes 26 and 27 and the overhangs 24 and 25, and between the The pressure means 3 comprises elastic means 30, in this case compression springs, which bear on a flange 13 of the support plate 1, and which pushes a cam 31 against the moving parts 20. and 21. The cam 31 is supported on two levers 28 and 29 of the moving parts, respectively 20 and 21, which extend on the opposite side, with respect to the pivot axes, to the lateral holding means 22 and 23, and vertical 24 and 25. The cam 31 is inserted between the ends of the levers 28 and 29, and under the thrust of the springs 30 30, it tends to deviate and thus to bring the two moving parts 20 and 21 closer together to close them on the shoe. It will be understood that the resistance to the spacing of the moving parts 20 and 21 depends on the intensity of the thrust of the springs 30. With reference to FIGS. 3a, 3b and 3c, it is possible to see the same fastening device and a shoe of which is represented only the base E of standardized profile intended to cooperate with the fixing device.

In FIG. 2a, it can be seen that, under the action of a thrust exerted by the rear attachment, not shown, the front of base E is sandwiched between the side walls 22 and 23, which are not visible, and recessed under the overhangs 24 and 25. In FIG. 2b, in the case of an excessive increase of the thrust in the axial direction, due to the obliquity of the walls 22 and 23, the thrust of the boot causes the symmetrical spacing. movable parts 20 and 21. With reference to FIG. 2c, it can be seen that in the case of an excessive increase in the thrust in a non-axial and therefore lateral direction, only one of the moving parts, in this case the movable part 20, pivots, while the other, the moving part 2909564 8 21 remains blocked against the stop 12. The shoe can therefore escape laterally similar to existing fasteners. In both cases, the shoe advancing, and thus by removing one and / or two moving parts 20 and 21, escapes the lateral holding means 22 and 23 and vertical 24 and 25, and through the ramps 26 and 27 the exhaust of the shoe can be carried forward. It should be noted that the exhaust function forwards or backwards in the case of a rear attachment can be provided by elements other than the ramps 26 and 27. It is thus possible to design, for example, means such as ramps integral with the support plate 1, and discoverable during the movement of the moving parts 20 and 21. It is also possible to design suitable means, during the displacement of the moving parts 20 and 21, under the action of the latter or under the action of means spring, to lift under the shoe so as to cause it. Referring now to FIG. 3, a variant of the fixing device according to the invention can be seen, essentially with regard to the pressure means 3 and its connection with the two moving parts 20 and 21. Thus, the levers 28 and 29 are each provided with a pivot, respectively 32 and 33, carrying a grooved roller, respectively 34 and 35, while the pressure means comprises a spring 36 which pushes a ball 37 against the rollers 34 and 35, in space separating them. The prestressing of the spring 36 is of course adjustable, which makes it possible to adapt the triggering force.

Note that in this variant, the triggering force is greater than that encountered during the movement of the binding, which ensures the safety of the skier by guaranteeing the accuracy of the trigger. Referring now to FIG. 4, another variation of the same fastener can be seen. The levers 28 and 29 also comprise rollers 34 and 35, and the pressure means comprises a ball 37 pushed back by a spring, which is not visible, against the rollers 34 and 35. In this variant, the action of the spring is exerted in the opposite direction to that of the previous embodiment, against the effect is the same.

Advantageously, this arrangement makes it possible to arrange the spring under the moving parts 20 and 21, in the support plate 1 for example, and thus to reduce the bulk. With reference to FIGS. 5a and 5b, another variant of the fastening device according to the invention can be seen, which differs from that shown in FIG. 3 in that the pivots 10 and 11 are not parallel and form an angle with the plane of the support plate 1, so that their free ends converge towards each other. This architecture allows the spacing of moving parts, of which only one, 21, is represented, is accompanied by a raising movement. It will be noted that this embodiment also allows the boot to escape from the binding during an increase in vertical force exerted on the vertical holding means 24 and 25, since the movement of the moving parts 20 and 21 has a vertical component. Referring now to Figure 6, we can see another variant of the fixing device according to the invention, which relates more particularly to the lateral support of the shoe. Thus, the lateral holding means of each of the moving parts 20 and 21 always has an oblique component with respect to the axis of the ski, and consists of a support element 4, which takes place under the overhang, not shown, which constitutes the vertical holding means, pivotally mounted on a pivot 40 with an axis perpendicular to the direction of the thrust of the boot, and carrying two rollers 41 and 42 mounted in free rotation on pivots, respectively 43 and 44, parallel to the pivot 40, and against which rollers 41 and 42, comes to bear the extreme lateral edge of the base E.

Such a construction makes it possible on the one hand to limit the friction between the lateral holding means and the base E, by replacing it with a bearing, and on the other hand to control the direction of the force on the moving parts. . Indeed, the effort of each roller 41, 42, is defined by the pivot 43, 44 of the roller 41, 42 and the point of contact of this roller 41, 42, with the base E. The point of competition of two forces of the rollers 41 and 42 and the axis of pivoting of the element 4 defining the direction of the force of the base E on the moving part, 20, 21. In the preceding variants, the direction of the stress is defined by the normal to the contact surface, disturbed by the angle of adhesion or friction. Control of this direction allows the correct adjustment between axial force and the lateral effort of triggering the fastener. Referring now to Figures 7a and 7b, we can see another variant of the fixing device according to the invention, approaching that previously described. Thus, the fixing device comprises similar lateral holding means, namely for each one an element 4 pivotally mounted on an axis 40, which is not visible, and carrying two rollers 41 and 42 pivotally mounted on pivots, respectively 43 and 44. this embodiment, the pivot 40, not visible, is carried by an arm 5, shown in more detail in Figure 8, which comprises a body 50, provided with a lateral cut 51 in which is engaged and can rotate there the element 4 along the axis X of the pivot 40, surmounted by an overhang 52 intended to constitute the vertical holding means, and pierced transversely, above the cutout 51, a hole 53 intended for the passage of a pivot, not shown, Y axis perpendicular to the X axis and oblique to the longitudinal axis of the ski, so as to allow the pivoting of the arm 5 on the movable part 20, 21. The positioning of the hole 53 above the cut 51, 35 and therefore above the means of maintenance n side, allows, because of the presence of the shoe that prevents the pivoting of the arm 2909564 5, that the retraction of the vertical holding means namely the raising of the overhang 52 by pivoting the body 50, to operate only through the spacing of the moving parts 20 and 21. The operation is identical to that of the embodiments described above, the maintenance is ensured in the same way, but after triggering the release is faster. Note that it is perfectly possible to design the replacement of the element 4 by a vertical wall and oblique 10 converging towards the front. Referring now to Figures 9a and 9b, one can see the application of the invention to a rear binding ski. This rear attachment thus comprises a support plate 6 carrying a locking means 7 of the boot, and a pressure means 8. The locking means 7 is composed, in identical manner to the locking means 2, of two parts 70 and 71 pivotally movable on pivots 60 and 61, the moving parts 70 and 71 each comprising a lateral holding means of the shoe, respectively 72 and 73, and a vertical holding means 74 and 75, respectively. 6 is, in the manner of a conventional rear attachment pivotally mounted along a transverse axis Z, on a shoe 9 intended to be fixed to the ski, in order to define two positions, one of opening and the other of closing .

In the closed position, the operation is identical to that of a front attachment, and that is to say that the release can be realized laterally but also towards the rear in case of an axial overpressure from the front to the back. Note that a rear attachment comprising a device 30 according to the invention can be in another form. The locking of the boot can thus be provided through a longitudinal translation of the plate 6 on the shoe 9. It will also be noted that, whatever the embodiment, the pivots 10 and 11 can be replaced by a single on which are pivoted the two moving parts.

This construction can not of course be applied to the embodiment shown in Figures 5a and 5b where the pivoting of the movable parts 20 and 21 is accompanied by a raising movement due to the inclination of the pivots 10 5 and 11.

Claims (13)

  1) Apparatus for attaching a boot to a ski comprising on the one hand a rear binding element adapted to hold the rear part of the boot (E), through lateral holding means (22, 23; , 42) and vertical holding means (24, 25; 52), and exerting pressure on said rear portion for pressing said shoe (E) forward, and secondly a front fastening member which is adapted to maintain the front of the shoe (E), through lateral holding means (22, 23; 4, 41, 42) and vertical holding means (24, 25; 52), and to form a stop in reaction to the push exerted by said rear fastening element, characterized in that firstly said front fastening element, and / or said rear fastening element, comprises two parts (20, 21; 70, 71) juxtaposed in the transverse direction, each provided with a lateral holding means (22, 23; 4, 41, 42) and a vertical holding means (24, 25; 52), and ui are movably mounted pivotably so as to be able to deviate from one another; in that on the other hand said movable parts (20, 21; 70, 71) cooperate with a pressure means (3; 8) of adjustable intensity, able to keep them close to each other and closed again. on the front and / or rear part of the boot (E) so that said lateral holding means (22, 23; 4, 41, 42) and vertical holding means (24, 25; 52) are active; and in that on the other hand said movable parts (20, 21; 70, 71) are shaped so that an excessive pressure of the boot (E) exerted on said front or rear attachment causes the pivoting to be effected at a distance of at least one of said movable parts (20, 21; 70, 71) so that said holding means (22, 23; 4, 41, 42; 24, 25; 52) become inactive.   2) Fastening device according to claim 1, characterized in that the vertical holding means (24, 25; 2909564 14 52) are each in the form of a stop, or overhang, extending horizontally and arranged on the side outside, and in which comes is intended to come to wedge a part of the shoe (E). 5   3) Fastening device according to any one of the preceding claims, characterized in that it comprises means (26, 27) allowing, after the holding means (22, 23, 4, 41, 42; , 25; 52) have been made inactive, to favor the escape of the shoe (E) forwards or backwards.   4) Fastening device according to claim 3, characterized in that each movable part (20, 21; 70, 71) has, in the region located between the lateral holding means (22, 23, 4, 41, 42) and its pivot axis (10, 11), an inclined ramp (26, 27), lowered towards the location intended to receive the shoe (E).   5) Fastening device according to any one of the preceding claims, characterized in that the pressure means (3; 8), of adjustable intensity, comprises a spring means 20 (30; 36) associated with a locking element ( 31; 37) adapted to come into contact with the moving parts (20, 21; 70, 71) so as to force them, by pressure, to close on the shoe (E).   6) Fastening device according to claim 5, characterized in that each movable part (20, 21; 70, 71) has on the opposite side, with respect to its pivot axis (10, 11), lateral holding means (22, 23; 4, 41, 42) and vertical (24, 25; 52), a lever extension (28, 29) against which a cam (31) pressed by the spring means (30) bears. .   7) Fastening device according to claim 6, characterized in that the lever extension (28, 29) carries a grooved roller (34, 35), while the spring means (36) pushes a ball (37) against said rollers (34, 35) in the space separating them. 2909564 15   8) Fastening device according to any one of the preceding claims, characterized in that the two movable parts (20, 21; 70, 71) pivot in two distinct axes (10, 11). 5   9) Fastening device according to claim 8, characterized in that the two movable parts (20, 21; 70, 71) pivot on two pivots (10, 11) of convergent axes.   10) Fastening device according to any one of the preceding claims, characterized in that the two movable parts (20, 21; 70, 71) each comprise an arm (5) pivotally mounted along an axis (Y) parallel to the plane of the ski and converging towards the front or towards the rear of the ski, according to whether said movable parts (20, 21; 70, 71) form part of an attachment respectively front or rear, said arm (5) comprising at the end above said pivot axis (Y), the vertical holding means (52), and below said pivot axis (Y), the lateral holding means (22, 23; 4, 41, 42).   11) Fastening device according to any one of the preceding claims, characterized in that the lateral holding means are each in the form of a wall (22, 23) substantially perpendicular to the ski plane, and making with the longitudinal axis of the latter an open angle towards the location intended to receive the shoe (E). 25   12) Fastening device according to any one of claims 1 to 10, characterized in that the lateral holding means comprises a member (4) pivotally mounted along an axis (X) perpendicular to the direction of the push of the shoe (E ), and bearing two rollers (41, 42) freely free rotating on pivots (43, 44) with axes parallel to said axis (X) of pivoting of said element (4), and against which rollers (41, 42). is intended to come to support the shoe (E).   13) Fastening device according to any one of the preceding claims, characterized in that the rear fixing element comprises a support plate (6) carrying lateral holding means (22, 23, 4, 41, 42) and vertical (24, 2909564 16 25; 52), and which is pivotally mounted along an axis (Z) transverse to the ski, or in longitudinal translation, on a shoe (9) fixed to said ski.