Support plate for skateboard

Abstract

A support plate comprising a base (1) intended to be fixed to a ski and a ski (2) capable of coming into contact with a boot held in a device for attaching said boot to the ski, said ski being integral with a pedal (3) rotatably fixed to said base so as to vary the vertical elevation of said ski, the rotatability of said pedal being generated by a translational movement of a slide (4) about a longitudinal axis of the ski; said slide comprising 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), intended to cooperate respectively with said left and right front slides and said left and right rear slides. Figure 2

Description

Title of the invention: Support plate for a sliding board

[0001] The invention relates to the field of snowboard bindings and more particularly to a support plate for such a binding. Its applications are in sliding sports, especially downhill skiing and ski touring.

[0002] Ski boot bindings generally comprise at least one retention element, configured to hold the boot on the ski board, and a support plate against which the boot sole rests when engaged with the retention element. The support plate includes a frame, fixed to the upper surface of the ski board, and a support plate on which the boot sole rests. Depending on the construction of the retention elements and the binding's ability to accommodate different types of ski boot soles, it may be necessary to provide height adjustment for the support plate.

[0003] Document EP 3117881 describes such a support plate with a height adjustment mechanism for the support plate, in which the support plate has a cam surface that cooperates with a ramp formed on the support plate frame. A screw / nut system oriented substantially along the longitudinal axis of the ski allows a horizontal movement of the nut to be converted into a vertical movement of the support plate. This device nevertheless has some drawbacks. First, the adjustment must be made from the front face of the toe piece, so such a system is only conceivable for a configuration in which the support plate and the front toe piece are fully integrated. In other words, the toe piece frame must provide a lower opening for the adjustment screw or for the adjustment tool.On the other hand, during the raising of the support plate, the nut also rises, and therefore the adjusting screw must be allowed some angular movement in the median plane. This angular movement of the adjusting screw introduces play in the mechanism and consequently leads to inaccuracies in the adjustment. Finally, the contact between the cam surface of the support plate and the chassis ramp also generates play and, therefore, inaccuracies in the skier's support. Indeed, the moments when the support plate is under the most stress are when the skier exerts strong pressure on one of the ski's edges. During these moments, only one side of the support plate is stressed, which is then subjected to a deformation moment around its longitudinal axis.As the support plate rests on the chassis at an oblique surface, this surface does not provide adequate resistance to the deformation induced by the aforementioned moment.

[0004] Document EP2786789 also presents a support plate with a height adjustment mechanism for the support plate. This device partially resolves the drawbacks described above. Indeed, since the designer limited the support plate to only two possible adjustment positions, it was possible to ensure contact between the support plate and the chassis, a horizontal surface, in each of these two positions. This chassis is much less sensitive to the effects of the deformation moment generated during strong edge grip. However, this adjustment is limited to only two positions. Furthermore, the adjustment can only be made when the boot is not in place on the binding.

[0005] Document EP 2886170 also describes a support plate with a height adjustment mechanism. In this construction, the pedal slides on an inclined ramp. Thus, the pedal moves longitudinally while its height varies.

[0006] The object of the invention is to provide a support plate for an alpine ski binding that solves the problems of prior art designs. In particular, the invention aims to provide a height-adjustable support plate that is independent of the binding's toe piece, allows adjustment even when the boot is in place on the binding, and resists deformations caused by excessive edge grip.

[0007] 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 skate being integral with a pedal rotatably fixed to said base so as to vary the vertical elevation of said skate, the rotational movement of said pedal being generated by a translational movement of a slider along a longitudinal axis of the ski; said slider comprises a front left slide, a front right slide, a rear left slide and a rear right slide and in that the base comprises a front left guide, a front right guide, a rear left guide and a rear right guide, intended to cooperate respectively with said front left and right sliders and said rear left and right sliders.

[0008] The slider comprises a main body which extends along a transverse axis of the ski, said main body comprising a control portion equipped with means transforming a rotary movement into a translational movement and disposed 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.

[0009] Preferably, the left anterior guide, respectively the right anterior guide, comprises a left anterior internal wall, respectively a right anterior internal wall, and a left anterior external wall, respectively a right posterior external wall; and in that the left posterior guide, respectively the right posterior guide, comprises a left posterior internal wall, respectively a right posterior internal wall, and a left posterior external wall, respectively a right posterior external wall.

[0010] In one embodiment of the invention, the adjustment means comprise an adjustment screw body adapted to cooperate with said control portion; said adjustment screw body being disposed along the longitudinal axis of the ski; and the adjustment means also comprise an adjustment screw head rotationally fixed with said adjustment screw body by means of a cardan joint and disposed along an axis X52 making an angle [3] between 20° and 45°, preferably between 20° and 30° with the longitudinal axis of the ski, said adjustment screw head being capable of being driven in rotation by the user.

[0011] The other objects, features and advantages of the present invention will become apparent from an examination of the following description and the accompanying drawing, comprising the following figures:

[0012] [Fig-1] [Fig. 1] is a rear perspective view of the support plate

[0013] [Fig.2] [Fig.2] is an exploded front perspective view of the support plate

[0014] [Fig.3] [Fig.3] is a longitudinal sectional view along plane P3, when the pedal is in the low position

[0015] [Fig.4] [Fig.4] is a longitudinal sectional view along plane P3, when the pedal is in high position

[0016] [Fig. 5] [Fig. 5] is a cross-sectional view along plane P5

[0017] [Fig.6] [Fig.6] is a perspective view cut along plane P6

[0018] [Fig.7] [Fig.7] is a cross-sectional view along plane P7

[0019] Figure 1 shows a perspective view of the support plate according to the invention. This plate The support plate is designed to be attached to a ski near the toe piece of the safety binding. The support plate comprises a base 1, a pedal 3, and a pad 2. The base is screwed onto the ski or onto an interface, itself attached to the ski, using screws. The screws are not visible in [Fig. 1]. However, the two rear recesses 12, into which the two rear screws are inserted, and one of the two front holes 13, which allow the passage of the front screws, can be seen. They are referred to as rear recesses 12 because they are located in the rear part of the base, that is, in the part of the base that faces the rear of the ski. It should be noted that the front holes 13 allow the passage of screws that simultaneously secure the toe piece to the ski and the support plate.

[0020] 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 ski pad 2, which is placed on the pedal 3, is designed to ensure contact with the sole of the boot. A slide 21 is provided between the pedal 3 and the ski pad 2 to allow the latter to slide laterally during lateral release of the toe piece. A transverse spring 22 ensures the return of the ski pad 2 to its central position.

[0021] Figures 3 and 4 show, in 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, each of which is received in a cavity 14 formed in the rear part of the base 1. The rear projections 31 and the edges of the cavities 14 are drilled to receive the shafts 11. The shafts 11 are coaxial, aligned and oriented transversely and allow the pedal to pivot about the transverse axis defined by the alignment of the two shafts 11. Two longitudinal springs 32 are placed between the pedal and the base to force the pedal towards the lower position and thus ensure contact with the slider.

[0022] The pivoting movement of the pedal 3, and consequently the height of the pad 2 supporting the shoe sole, is generated by the longitudinal translational movement of the slider 4. The lower surface of the pedal 3 forms an inclined plane 33, while the central portion of the slider 4 comprises ramps 464, 465 that cooperate with the inclined plane 33. When the slider is in the forward position, as shown in [Fig. 3], the distal portion of the inclined slope 33 is in contact with the ramps 464 and 465. The pad 2 is then in the lower position. When it is in the rearward position (see [Fig. 4]), the proximal portion of the inclined slope 33 is in contact with the top of the ramp. The pad 2 is then in the upper position. All intermediate pad heights are possible by positioning the slider in an intermediate position.

[0023] Figure 5 shows a view from below of the support plate, allowing visualization of the rear projections 31 of the pedal in the recesses 14, as well as the springs 32 that constrain the pedal 3 so that the inclined slope remains in constant contact with the slide ramp. For ease of reading the drawing, the slide 4 and the pedal height adjustment mechanism 5 are shown in a darker shade in this figure.

[0024] The adjustment mechanism 5 for the height of the pedal 3 includes, 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 and the rear bridge 156 are integral with the base 1. The screw body 51 is threaded and engages with a tapped hole 49 provided in the control portion 461 of the slide 4. The rotation of the body of The screw generates the longitudinal movement of the slide 4. The screw head 52 is connected to the screw body 51 by a universal joint. It is oriented about an axis X52 which makes an angle [3] between 20° and 45°, preferably 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 a third bridge 157. In the embodiment shown in the figures, the base is obtained by injection molding of a thermoplastic material, and the front bridge 151 and rear bridge 156, as well as the third bridge 157, are integral parts of the base.

[0025] The existing universal joint between the screw body and the screw head necessitates positioning the tool used to adjust the pedal height along an axis that forms an angle [3] with the longitudinal axis. Advantageously, this allows the support plate height to be adjusted when the boot is in place on the ski, i.e., held by the toe piece and the heel piece of the ski binding.

[0026] The slide 4, a perspective view of which can be seen in [Fig. 2], comprises, on the one hand, a main body 46 oriented transversely. Said main body 46 has a control portion 461 equipped with means for transforming a rotary motion into a translational motion and disposed 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 motion into a translational motion consist of a tapped hole 49 provided 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 anterior slide 42, respectively the right anterior slide 43, extends forward from the main body of the slide, while the left posterior slide 44, respectively the right posterior slide 45, extends backward from the main body.

[0027] The front slides 42 and 43, respectively the rear slides 44 and 45, have a length, Lo, along 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.

[0028] 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 formed 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 should be noted that the anterior internal wall left 1522 and the right anterior internal wall 1532 are placed at the base of the anterior bridge 151.

[0029] 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 cross-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 formed 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 should be noted that the left anterior internal wall 1542 and the right anterior internal wall 1552 are located at the base of the posterior bridge 156.

[0030] The particular configuration of the slide ensures good positional stability, regardless of the forces to which it is subjected. Consider, for example, the case of a left turn made by the skier. When such a turn is made at high speed and requires strong edge grip, the skier's boot exerts a significant vertical force on the left side of the ski 2. This vertical force is transmitted entirely to the pedal 3. However, due to the possible slippage between the inclined slope 33 and the ramp 41 of the slide, this vertical force generates a horizontal force that acts on the left side of the slide and tends to cause it to rotate. Advantageously, thanks to the various slides 42, 43, 44, 45, this rotation is largely impeded.Indeed, the left anterior slide 42 rests against the left anterior internal wall 1522 and the right anterior slide 43 rests against the right anterior external wall 1531. Simultaneously, the left posterior slide 44 rests against the left posterior external wall 1541 and the right posterior slide 45 rests against the right posterior internal wall 1552.

[0031] The invention is not limited to the single embodiment described herein by way of example.

Claims

Demands

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 skate being integral with a pedal (3) rotatably fixed to said base so as to vary the vertical elevation of said skate, the rotatability of said pedal being generated by a translational movement of a slider (4) along a longitudinal axis of the ski;characterized in that the slide comprises a main body (46), a left front slide (42), a right front slide (43), a left rear slide (44) and a right rear slide (45), the left front slide (42), respectively the right front slide (43), extending forward from the main body of the slide, while the left rear slide (44), respectively the right rear slide (45), extending backward from the main body; 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.

2. Support plate according to claim 1 characterized in that said slider (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 disposed 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).

3. Support plate according to claim 2 characterized in that said left anterior guide (152), respectively said right anterior guide (153), comprises a left anterior inner wall (1522), respectively a right anterior inner wall (1532), and a left anterior outer wall (1521), respectively a right posterior outer wall (1531); and in that the left posterior guide (154), respectively the right posterior guide (155), includes 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).

4. Support plate according to any one of claims 2 to 3 further comprising means for adjusting the longitudinal position of the slider (4), said adjustment means comprising an adjustment screw body (51) adapted to cooperate with said control portion (461); said adjustment screw body (51) being disposed along the longitudinal axis of the ski.

5. Support plate according to the preceding claim further comprising an adjustment screw head (52) rotationally fixed to said adjustment screw body (51) via a universal joint and disposed along an axis X52 making an angle [3] between 20° and 45°, preferably between 20° and 30° with the longitudinal axis of the ski, so as 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 toe piece and the rear heel piece of the ski binding, said adjustment screw being capable of being driven in rotation by the user.