FR2695304A1 - Ski boot with adjustable inner front holding plate - having cord between plate and lever articulated on back of leg and adjusted by cursor on lever moved by adjuster screw - Google Patents

Abstract

The boot has a front inner plate which is connected to a lever (10), on the back of the leg, by a cord (9). The end of this is joined to a slider with a threaded hole (15) into which an adjustor screw (14), through the lever, is screwed. The threaded hole is crossed by a smooth cylindrical hole (18) opening on either side of the slider. This forms oblong spaces (18C,18D), on either side of the threaded hole's axis (X,X'), which allow the slider to rock and release it from the screw. It is moved by pulling the cord. USE - Ski boot with inner plate, holding foot, adjusted by turning adjustor screw on back of leg.

Description

DEVICE FOR CONTROLLING A MOBILE ELEMENT RELATIVE TO A FIXED ELEMENT,
ESPECIALLY IN A SKI SHOE
The present invention relates to a device for controlling and adjusting a mobile element with respect to a fixed element, in particular in an alpine ski boot, effected with at least one connecting means interacting between the mobile element to be controlled and the fixed element using a tensioning lever articulated on the latter, and intended to act in traction on said link by means of a slider with which it is provided and which cooperates with an adjustment screw integral with said lever tensioner, by means of a threaded hole intended to make it mobile in translation on the latter when the latter is maneuvered in rotation.

 Generally, known devices of this type have the disadvantage of being able to provide only a progressive adjustment of the tension on the link, whatever the initial position of the cursor. However, it can be very far from the desired position and this implies a rotation maneuver which is all the more long and tedious of the adjusting screw, to reach said position, as the thread of said adjusting screw has a small pitch. .

 The solution proposed in the request for French addition certificate No. 2 475 372 constitutes an advantageous solution for carrying out a rapid adjustment of the control device which is effected by means of a spring ratchet on which the end of the link and which cooperates with one of the teeth of a rack for a chosen position.

 Of course such an adjustment made for this device is faster than in the case of the screw with slider because the chosen position is reached directly, but unlike the previous solution, only an approximate adjustment can be obtained here at exclusion of any progressive, i.e. precise, adjustment between the teeth of the rack.

 It is the same for the device taught by Italian patent No. 1183 113 and in which the adjustment is carried out manually by sliding a carriage on an axis of the shoe, which carriage comprises a locking member operating by wedging on the 'axis, under the influence of a tensioning lever which carries the end of the link, whose position relative to the lever can be chosen by anchoring on one or the other of the teeth of a rack which is provided with said the sink.

 In this system, the difficulty consists in finding a compromise between the position of the carriage on the axis and the position of the link on the rack, so as to make it possible to tilt the tensioning lever.

This leads to trial and error in the choice of the tooth of the rack intended for anchoring the link.

In addition, such a device does not allow optimum adjustment because positioning of the carriage on the axis by manual traction can only provide random accuracy.

 The object of the present invention is to remedy these drawbacks by proposing a solution capable of allowing very rapid approximate adjustment which is immediately followed by precise adjustment, that is to say progressive, or even of the micrometric type.

To this end, the invention relates to a device for controlling and adjusting a movable element relative to a fixed element, in particular in an alpine ski boot, carried out by means of at least one interacting connecting means. between the mobile element to be controlled and a tensioning lever articulated on said fixed element on which it is supported in order to be able to act in traction on said link to
Using a slider which it is provided with, which cooperates with an adjustment screw integral with the tensioning lever by means of a threaded hole intended to make it movable in translation on the latter when the latter is operated in rotation , characterized in that the threaded hole of the slider, produced coaxially with respect to the axis of the screw, is crossed in the same plane by a cylindrical and smooth secant hole whose ends open on either side of the slider, proximity to those of the threaded hole to define together with them oblong openings, extending respectively on either side of the axis of said threaded hole, and constituting the through end portions of two internal and smooth clearance zones, arranged head-to-tail in extension of two opposite remaining threaded zones, which clearance zones are capable of allowing, in a single plane, the tilting of the cursor relative to the screw, in such a way as to be able to cause the simultaneous disengagement of the screw with respect to the two opposite threaded zones, for obtaining by sliding an approximate initial positioning of the cursor thus disengaged, by manual traction thereon, hence on the link, and to which traction is automatically followed by a reverse tilting of the cursor thus re-engaged for a new engagement of its threaded zones on the screw, to allow progressive adjustment to the optimum position sought, by action on said adjusting screw.

The invention will be better understood and other characteristics thereof will be highlighted with the aid of the description which follows, with reference to the appended schematic drawings, illustrating, by way of nonlimiting example, how the invention can be performed and in which:
Figure 1 is a side view of a ski boot equipped with a device for adjusting one of its parts, according to the invention.

 FIG. 2 is a perspective view on a larger scale of a tensioning lever provided with the adjustment device of FIG. 1.

 Figures 3, 4, 5 show in longitudinal section a tensioning lever according to Figure 2 respectively, in an initial position, during a coarse adjustment to another position, during a final fine adjustment.

 Figure 6 shows in perspective a tensioning lever according to an alternative embodiment of the elastic return means of the cursor.

 FIG. 7 is a cross-sectional view of the tensioning lever along line VII VII of FIG. 6.

 Figure 8 is a partial top view of Figure 7 showing the cursor on the tensioning lever screw.

 Figure 9 is a longitudinal sectional view of the cursor alone.

 Figures 10 and 11 illustrate the two ends of the cursor seen in elevation respectively along E and F.

 FIG. 12 is a partial view of a screw cooperating with the slider according to FIGS. 9 to 11.

 By way of nonlimiting example, the control and adjustment device 1 finds its application in a ski boot with central and 'or mixed entry 2 which is constituted in known manner by a rigid shell of which a shell base 3 is surmounted a rod 4 consisting of a rear part or rear cover 5, and a front part or front cover 6, at least one of these parts being capable of being articulated relative to the other, and / or by relative to the shell base 3, via a transverse axis 7.

 According to the present example, it is proposed to control and adjust in tightness an internal holding plate 8, of the foot in the shoe 2, by means of the device according to the invention.

 Of course, other cases of application can be envisaged, such as for example: the closing of the boot proper by relative action on the front cover 6 and rear rear 5 of the rod 4; adjusting the position of part of the shoe; the adjustment of a means of control of the bending etc ...

 Consequently, as illustrated in FIG. 1, and in general, the device 1 makes it possible to control and adjust a mobile element, in this case the aforementioned plate 8, relative to a fixed element, here the rear cover 5.

 This operation is carried out by means of a connecting means such as a flexible and inextensible link 9, interacting between said plate 8 to be controlled and adjusted and a tensioning lever 10. The latter is articulated on the rear cover 5 on which it is supported, thanks to a housing 12 formed in the lower part of a recess 17 ensuring the at least partial retraction of said lever 10 in the volume of said rear cover.

 The lever 10 is intended to act in traction on said link 9 by means of a cursor 13 in connection, on the one hand, with said link 9 which has passed through a transverse hole 9 ', and, d on the other hand, with an adjustment screw 14 integral with said tension lever 10. This adjustment screw 14 passes through said cursor 13 through a threaded hole 15 (see FIG. 2), so as to make it movable in translation during an action in adjustment on a control button 16 of the wash 14.

In known manner the tensioning of the link 9 according to a chosen value, is effected by tilting the lever 10 in the niche 17, by bracing on the spout 1 1 in place in its housing 12
According to the invention, and as visible in FIGS. 9, 10 and 11, the threaded hole 15 of the slider 13, produced coaxially with respect to the axis XX 'of the screw 14, is crossed along the same plane, by a cylindrical and smooth secant hole 18 of axis W ', the ends 18A, 18B of which open on either side of the cursor 13, near those 15C, 15D, of the threaded hole 15, to jointly define openings oblong 19A, 19B. These latter extend respectively on either side of the axis XX 'of the threaded hole 15 and constitute the parts of the through ends of two smooth and internal clearance zones 18C, 18D. These zones are arranged head to tail in extension of two opposite threaded zones 15A, 15B, remaining after the drilling operation of the aforementioned secant hole 18.

 As shown particularly well in Figures 3, 4 and 5, illustrative of the operation of the device, the clearance zones 18C, 18D, resulting from the drilling of the secant hole 18, are capable of allowing, in a single plane, the tilting of the cursor 13 by relative to the fixed screw 14, so as to be able to simultaneously cause the disengagement (fig. 4) of the screw 14 relative to the two opposite threaded zones 15A, 15B. The cursor 13 is tilted by manual pressure on it in a direction F1 and the resulting disengagement allows obtaining, by sliding in a direction F2, a new initial coarse positioning of the cursor 13 taking place by manual traction on the latter, hence on link 9.

 This traction is followed by a voluntary or automatic reverse tilting of the cursor 13 (fig.5) for a new engagement of its threaded zones 15A, 15B on the screw 14. A final precise adjustment of the exact desired position can then be carried out gradually. , or even micrometrically, by pressing button 16 of screw 14.

 According to another characteristic of the invention, the cursor 13 comprises an elastic return means tending to automatically bring it back into the position of engagement with the threaded adjusting screw 14, as soon as the pressure F1, voluntarily exerted on said cursor 13 in order to its initial coarse adjustment stops.

 In general, the elastic return means consists of a member capable of working in compression and in extension, disposed between a lateral face of the slider 13 directed towards the rocking lever 10 'and said rocking lever 10.

 According to the example shown in FIGS. 1 to 5, the elastic return means is a helical spring 20 supported in a corresponding housing 21 of the cursor 13.

 Of course, the elastic return means can also be a rubber block (not shown) fixed on the lateral face of the slider 13.

 The embodiment shown in FIGS. 6 to 8 differs from the previous one in that the elastic return means of the cursor is constituted by a clip 22 arranged in a jumper transversely at the through end 18A or 18B of the internal clearance zones. 18C, 18D, and in elastic support against the adjustment screw 14 passing through said slider 13.

 The clip 22 is fixed by two curved ends 22a, 22b inserted in two corresponding housings 23, 24 formed on one of the end faces of the slider 13.

 Furthermore, it can be seen in FIG. 6 that the articulation of the tensioning lever 10 is effected not by a spout in free support in a housing of the rear cover 5, but by means of an articulation axis (not shown) of said cover 5, passing through a hole 25 formed in the lower part of said lever 10.

 The device 1, according to the invention, which has just been described with reference to Figures 1 to 8, actuates the movable element 8 of the shoe by means of a means such as the link 9, but can also act on another means of connecting and transmitting the movement of the cursor 13 on the screw 14; it may in particular be a rigid element such as a tie rod or a lever.

 Still, the connection and transmission means 9 can be provided removable from the cursor 13 or mounted prisoner of the latter.

Claims (10)

 1) Device for controlling and adjusting a mobile element (8) relative to a fixed element (5), in particular in an alpine ski boot (2), effected by means of at least one means of connection (9), interacting between the mobile element (8) to be controlled and a tensioning lever (10) articulated on said fixed element (5) on which it is supported in order to be able to act in traction on said link (9) to using a slider (13) which it is provided with, which cooperates with an adjustment screw (14) integral with the tensioning lever (10) by means of a threaded hole (15) intended to make it mobile in translation on the latter when the latter is operated in rotation, characterized in that the threaded hole (15) of the slider (13), produced coaxially with respect to the axis (XX ') of the screw (14), is traversed along the same plane by a cylindrical and smooth secant hole (18) whose ends (i8A, 18B) open on either side of the cursor (13), near mite from those (15C, 15D) of the threaded hole (15) to define jointly with them oblong openings (19A, 19B), extending respectively on either side of the axis (XX ') of said threaded hole ( 15), and constituting the through end portions of two internal and smooth clearance zones (18C, 18D), arranged head to tail in extension of two opposite remaining threaded zones (15A, 15B), which clearance zones (18C, 18D) are able to allow, in a single plane, the tilting of the cursor (13) relative to the screw (14), so as to be able to cause the simultaneous disengagement of the screw (14) relative to the two threaded zones opposite (15A, 15B), for obtaining by sliding an initial approximate positioning of the cursor (13), by manual traction on the latter from where on the link (9), and to which traction succeeds a reverse tilting of the cursor (13) for a new engagement of its threaded zones (15A, 15B) on the screw (14), to allow progressive adjustment to the desired optimum position, by action on said adjusting screw (14).  2) Device according to claim 1 characterized in that the cursor (13) comprises an elastic return means tending to return it automatically to the position of engagement with the threaded adjusting screw (14), as soon as a pressure (F1) , voluntarily exerted on said cursor (13), with a view to its initial approximate positioning, is released.  3) Device according to claim 2 characterized in that the elastic return means is constituted by a member capable of working in compression and in extension, disposed between a lateral face of the slider (13) directed towards the rocking lever (10) and said tilting lever (10).  4) Device according to claim 3 characterized in that the elastic return means is a helical spring (20) bearing in a corresponding housing (21) of the cursor (13).  5) Device according to claim 3 characterized in that the elastic return means is a rubber block fixed on the side face of the slider (13).  6) Device according to claim 2 characterized in that the elastic return means of the cursor is constituted by a staple (22) arranged in a jumper transversely at the through end (18A or 18B) of the internal clearance zones (18C, 18D), and in elastic support against the adjustment screw (14) passing through said slider (13).  7) Device according to any one of claims 1 to 6 characterized in that the means (9) of the control device (1) is an inextensible flexible link.  8) Device according to any one of claims 1 to 6 characterized in that the means (9) of the control device (1) is a rigid element.  9) Device according to any one of claims 1 to 8 characterized in that the means (9) is mounted captive on the slider (13).  10) Device according to any one of claims 1 to 8 characterized in that the means (9) is removable from the cursor (13).