Support plate for sliding board

Abstract

Support plate comprising a base (1) intended to be fixed to a ski and a skate (2) capable of coming into contact with a boot held in a device for fixing said boot to the ski, said support plate comprising adjustment means making it possible to vary the height of the skate relative to the base, said adjustment means comprising an adjustment screw body (51), arranged along the longitudinal axis of the ski, and an adjustment screw head (52) integral in rotation with said adjustment screw body (51) by means of a cardan joint; said adjustment screw head being arranged along an axis X52 making an angle β of between 15° and 45°, preferably of between 20° and 40° with the longitudinal axis of the ski and said adjustment screw head being capable of being driven in rotation by the user Figure 5

Description

Title of the invention: Support plate for sliding board

[0001] The invention relates to the field of bindings for sliding boards and more particularly relates to a support plate for such a binding. It is applicable to sliding sports, in particular downhill skiing or ski touring.

[0002] Shoe bindings on sliding boards generally comprise at least one retaining element, configured to hold the shoe on the sliding board, and a support plate on which the sole of the shoe rests, when it is engaged with the retaining element. The support plate comprises a frame, fixed on an upper face of the sliding board, and a support plate on which the sole of the shoe rests. Depending on the construction of the retaining elements and the ability of the binding to accept different types of ski boot soles, it may be necessary to provide an adjustment of the height of the support plate.

[0003] Document EP 3117887 describes such a support plate with a support plate height adjustment mechanism in which the support plate has a cam surface which cooperates with a ramp provided on the support plate frame. A screw / nut system oriented substantially along the longitudinal axis of the ski makes it possible to convert a horizontal movement of the nut into a vertical movement of the support plate. This device nevertheless has some drawbacks. First of all, the adjustment must be made via the front face of the stop, so that such a system is only designed for a configuration in which the support plate and the front stop are fully associated. In other words, it is necessary for the stop frame to provide a lower passage for the adjustment screw or for the passage of the adjustment tool.On the other hand, during the elevation of the support plate, the nut also rises and it is therefore necessary to allow the adjustment screw the possibility of a certain angular movement in the median plane. This angular movement of the adjustment screw is a source of play in the mechanism and consequently of inaccuracy in the adjustment. Finally, the contact between the cam surface of the support plate and the ramp of the chassis also generates play and, consequently, of inaccuracy of the supports for the skier. Indeed, the moments when the support plate is most stressed are the moments when the skier exerts strong pressure on one of the edges of the ski. At these times, only one of the sides of the support plate is stressed, which is then subjected to a deformation moment around the longitudinal axis.Since the support plate rests on the frame at an oblique surface, this surface does not provide adequate resistance to the deformation induced by the above-mentioned moment.

[0004] Document EP2786789 also presents a support plate having a mechanism for adjusting the height of the support plate. This device partly resolves the drawbacks set out above. Indeed, the designer having limited himself to having only two possible positions for adjusting the support plate, it was possible to have for each of these two positions a contact between the support plate and the chassis which is a horizontal surface, which is much less sensitive to the effects of the deformation moment generated during strong edge grips. Nevertheless, this is an adjustment limited to only two positions. Furthermore, the adjustment can only be made when the boot is not in place on the binding.

[0005] The objective of the invention is to propose a support plate for an alpine ski binding which solves the problems of the constructions of the prior art. In particular, the invention aims to provide a height-adjustable support plate, which is independent of the front stop of the binding, which allows adjustment even when the boot is in place on the binding and which resists deformations generated by excessive edge grip.

[0006] The objective of the invention is achieved by providing a support plate comprising a base intended to be fixed to a ski and a skate capable of coming into contact with a boot held in a device for fixing said boot to the ski, said support plate comprising adjustment means making it possible to vary the height of the skate relative to the base, said adjustment means comprising an adjustment screw body, arranged along the longitudinal axis of the ski, and an adjustment screw head integral in rotation with said adjustment screw body by means of a cardan joint; said adjustment screw head being arranged along an axis X52 making an angle [3 between 15° and 45°, preferably between 20° and 40° with the longitudinal axis of the ski and said adjustment screw head being capable of being driven in rotation by the user.

[0007] In a preferred embodiment of the invention, the skate is integral with a pedal rotatably fixed to said base so as to vary the vertical elevation of said skate, the rotary movement of said pedal being generated by a translational movement of a slider along a longitudinal axis of the ski.

[0008] In a preferred embodiment, the slider comprises a left anterior slide, a right anterior slide, a left posterior slide and a right posterior slide and in that the base comprises a left anterior guide, a right anterior guide, a left posterior guide and a right posterior guide, provided to cooperate respectively with said left and right anterior slides and said left and right posterior slides.

[0009] In a preferred embodiment, the slider comprises a main body which extends along a transverse axis of the ski, said main body comprising a portion of control equipped with means transforming a rotary movement into a translational movement and arranged between a left lateral portion and a right lateral portion; said left lateral portion, respectively said right lateral portion, being equipped with a left ramp, respectively a right ramp.

[0010] Other objects, features and advantages of the present invention will become apparent upon examination of the following description and the accompanying drawing, comprising the following figures:

[0011] [Fig-1] [Fig. 1] is a rear perspective view of the support plate

[0012] [Fig.2] [Fig.2] is an exploded front perspective view of the support plate

[0013] [Fig.3] [Fig.3] is a longitudinal sectional view, along plane P3, when the pedal is in the down position

[0014] [Fig.4] [Fig.4] is a longitudinal sectional view along plane P3, when the pedal is in the up position

[0015] [Fig.5] [Fig.5] is a sectional view along plane P5

[0016] [Fig.6] [Fig.6] is a perspective view cut along plane P6

[0017] [Fig.7] [Fig.7] is a cross-sectional view along plane P7

[0018] [Fig. 1] shows in perspective the support plate according to the invention. This plate support plate is intended to be secured to a ski near the front stop of the safety binding. The support plate comprises a base 1, a pedal 3 and a skate 2. The base is screwed onto the ski or onto an interface, itself fixed to the ski, by means of screws. The screws are not visible in [Fig.l]. However, we can see the two rear cups 12 in which the two rear screws are inserted and one of the two front holes 13 which are used for the passage of the front screws. We speak here of rear cups 12 because they are placed in the rear part of the base, that is to say, in the part of the base which is directed towards the rear of the ski. It will be noted that the front holes 13 are used for the passage of screws which ensure at the same time the securing of the front stop to the ski and that of the support plate.

[0019] The pedal 3 is pivotally mounted relative to the base 1 by means of two shafts 11 oriented perpendicularly to the longitudinal axis of the ski. The skate 2, which is placed on the pedal 3, is provided to ensure contact with the sole of the boot. A slide 21 is provided between the pedal 3 and the skate 2 to allow the latter to slide transversely during lateral release of the front stop. A transverse spring 22 ensures the return to the central position of the skate 2.

[0020] Figures 3 and 4 show, in a longitudinal section, the pedal 3 in two extreme positions of its rotational movement relative to the base 1. The pedal 3 has two rear projections 31 which, each, are received in a cavity 14 formed in the rear part of the base 1. The rear projections 31 as well as the edges of the cavities 14 are pierced so as to receive the shafts 11. The shafts 11 are coaxial, aligned and oriented transversely and allow the pedal to pivot along the transverse axis defined by the alignment of the two shafts 11. Two longitudinal springs 32 are placed between the pedal and the base in order to force the pedal towards the low position and thus ensure contact with the slider.

[0021] The pivoting movement of the pedal 3 and, consequently, the height of the pad 2 supporting the sole of the shoe, is generated by the longitudinal translational movement of the slider 4. The lower surface of the pedal 3 constitutes an inclined plane 33, while the central portion of the slider 4 comprises ramps 464, 465 which cooperate with the inclined plane 33. When the slider is in the forward position, as shown in [Fig. 3], it is the distal portion of the inclined slope 33 which is in contact with the ramps 464 and 465. The pad 2 is then in the low position. When it is in the rear position, (see [Fig. 4]) it is the proximal portion of the inclined slope 33 which is in contact with the top of the ramp. The pad 2 is then in the high position. All intermediate heights of the pad are possible by positioning the slider in an intermediate position.

[0022] [Fig. 5] shows a view from below of the support plate allowing the rear projections 31 of the pedal to be viewed in the cavities 14 as well as the springs 32 which constrain the pedal 3 so that the inclined slope always remains in contact with the ramp of the slider. For reasons of ease of reading the drawing, a darker shade has been given in this figure to the slider 4 and to the mechanism 5 for adjusting the height of the pedal.

[0023] The mechanism 5 for adjusting the height of the pedal 3 comprises in particular an adjustment screw body 51 and a screw head 52. The screw body 51 is fixed longitudinally and held in its position by means of a front bridge 151 and a rear bridge 156. The front bridge 151 as well as the rear bridge 156 are integral with the base 1. The screw body 51 is threaded and is engaged with a tapped hole 49 formed in the control portion 461 of the slider 4. The rotation of the screw body generates the longitudinal movement of the slider 4. The screw head 52 is connected to the screw body 51 by a cardan joint. It is oriented along an axis X52 which makes an angle [3 of between 20° and 45°, preferably of between 20° and 30°, with the longitudinal axis. In the described embodiment, the angle [3 is approximately 25°. The screw head 52 is held in its oblique position relative to the longitudinal axis by means of a third bridge 157.In the embodiment presented in the figures, the base is obtained by injection of a thermoplastic material and the front 151 and rear 156 bridges as well as the third bridge 157 are an integral part of the base.

[0024] The mechanical cardan connection existing between the screw body and the screw head makes it necessary to place the tool used to adjust the height of the pedal along an axis which makes an angle [3 with the longitudinal axis. Advantageously, this makes it possible to to be able to adjust the height of the support plate when the boot is in place on the ski, i.e. held by the front stop and the rear heel of the ski binding.

[0025] The slide 4, a perspective view of which is visible in [Fig.2], comprises on the one hand a main body 46 oriented transversely. Said main body 46 comprises a control portion 461 equipped with means transforming a rotary movement into a translational movement and arranged between a left lateral portion 462 and a right lateral portion 463; said left lateral portion, respectively said right lateral portion, being equipped with a left ramp 464, respectively a right ramp 465. Said means for transforming a rotary movement into a translational movement are constituted by a tapped hole 49 formed in the control portion 461 which cooperates with the adjusting screw body 51. In addition to the main body 46, the slide 4 comprises four slides 42, 43, 44, 45.The left front slide 42, respectively the right front slide 43, extends from the main body of the slide forward, while the left rear slide 44, respectively the right rear slide 45, extends from the main body backward.

[0026] The front slides 42 and 43, respectively the rear slides 44 and 45 have a length, Lo, in the longitudinal direction of between 10 and 20 mm and a width, La, of approximately 6 mm. They are separated by a distance, D, greater than 10 mm.

[0027] The left anterior slide 42, respectively the right anterior slide 43, is retained laterally in a left anterior guide 152, respectively in a right anterior guide 153. As can be seen in [Fig.6], the left anterior guide 152, respectively the right anterior guide 153, is constituted by a left anterior external longitudinal wall 1521 and by a left anterior internal wall 1522, respectively by a right anterior external longitudinal wall 1531 and by a right anterior internal wall 1532. It will be noted that the left anterior internal wall 1522 and the right anterior internal wall 1532 are placed at the base of the anterior bridge 151.

[0028] The left posterior slide 44, respectively the right posterior slide 45, is retained laterally in a left posterior guide 154, respectively in a right posterior guide 155. [Fig.7] shows a sectional view of the base 1 and the slide 4 at the level of the posterior bridge 156. The left posterior guide 154, respectively the right posterior guide 155, is constituted by a left posterior external longitudinal wall 1541 and by a left anterior internal wall 1542, respectively by a right anterior external longitudinal wall 1551 and by a right anterior internal wall 1552. It will be noted that the left anterior internal wall 1542 and the right anterior internal wall 1552 are placed at the base of the posterior bridge 156.

[0029] The particular configuration of the slide ensures good positional stability, and this regardless of the forces to which it is subjected. Let us take for example the case of a turn to the left made by the skier. When such a turn is made at high speed and requires a strong edge grip, the skier's boot exerts a significant vertical force on the left side of the skate 2. This vertical force is fully transmitted to the pedal 3. On the other hand, due to the possible sliding between the inclined slope 33 and the ramp 41 of the slide, this vertical force generates a horizontal force which is exerted on the left part of the slide and tends to make it pivot. Advantageously, thanks to the different slides 42, 43, 44, 45, this rotation is largely hindered. Indeed, the left front slide 42 comes to bear against the left front internal wall 1522 and the right front slide 43 comes to bear against the right front external wall 1531.Simultaneously, the left posterior slide 44 comes to bear against the left posterior external wall 1541 and the right posterior slide 45 comes to bear against the right posterior internal wall 1552.

[0030] The invention is not limited to the single embodiment described above as an example.

Claims

Claims

1. Support plate comprising a base (1) intended to be fixed to a ski and a skate (2) capable of coming into contact with a boot held in a device for fixing said boot to the ski, said support plate comprising adjustment means making it possible to vary the height of the skate relative to the base, said adjustment means comprising an adjustment screw body (51); said adjustment screw body (51) being arranged along the longitudinal axis of the ski, characterized in that the adjustment means further comprises an adjustment screw head (52) integral in rotation with said adjustment screw body (51) by means of a cardan joint and arranged along an axis X52 making an angle [3 between 15° and 45°, preferably between 20° and 40° with the longitudinal axis of the ski, said adjustment screw being capable of being driven in rotation by the user.

2. Support plate according to claim 1 characterized in that said skate is integral with a pedal (3) fixed in a rotatable manner to said base so as to vary the vertical elevation of said skate, the rotary movement of said pedal being generated by a translational movement of a slider (4) along a longitudinal axis of the ski.

3. Support plate according to claim 2 characterized in that said slide comprises a left front slide (42), a right front slide (43), a left rear slide (44) and a right rear slide (45) and in that the base comprises a left front guide (152), a right front guide (153), a left rear guide (154) and a right rear guide (155), provided to cooperate respectively with said left and right front slides and said left and right rear slides.

4. Support plate according to claim 3 characterized in that said slide (4) comprises a main body (46) which extends along a transverse axis of the ski, said main body comprising a control portion (461) equipped with means transforming a rotary movement into a translational movement and arranged between a left lateral portion (462) and a right lateral portion (463); said left lateral portion, respectively said right lateral portion, being equipped with a left ramp (464), respectively a right ramp (465).

5. Support plate according to claim 4 characterized in that said left front guide (152), respectively said right front guide (153), comprises a left anterior internal wall (1522), respectively a right anterior internal wall (1532), and a left anterior external wall (1521), respectively a right posterior external wall (1531); and in that the left posterior guide (154), respectively the right posterior guide (155), comprises a left posterior internal wall (1542), respectively a right posterior internal wall (1552), and a left posterior external wall (1541), respectively a right posterior external wall (1551).

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