REAR-ENTRY SKI BOOT WITH A CLOSURE AND FLEXIBILITY ADJUSTMENT DEVICE

Abstract: The present invention relates to a rear-entry ski boot with a closure and flexibility adjustment device which includes a shell (1) to which a rear quarter (2) and a front quarter (3), mutually closeable on each other, are pivotably coupled. The peculiarity of the invention resides in the fact that it includes closure elements for the mutual tightening of the quarters adapted to act, at the same time, as flexibility adjusters. The closure elements consist of a lever (4) supported by the rear quarter (2) and acting on a cable (6) which embraces the front quarter (3), with the interposition of a device for adjusting the useful length of the cable (6). The cable (6) is removably accommodatable in notches (21) provided transversely with respect to a slot (20) defined at the front top edge of the front quarter (3) and extending longitudinally on the front quarter (3).

Description: The present invention relates to a rear-entry ski boot with a closure and flexibility adjustment device. A rear-entry ski boot according to the preamble of claim 1 is known from FR-A-2564327. As is known, ski boots are currently available on the market in which the adjustment of the flexibility is performed by means of a slot provided on the quarter and provided with means which perform a progressive closure of the flaps, so as to vary the rigidity of the quarter and, accordingly, the characteristics of flexibility. Among these solutions, U.S. Patent 4.030.214 is mentioned, wherein a slot is provided which is delimited by protruding flaps both in the front part of the shell and in the rear part of the quarter which is progressively closed by a slideable cursor. In this type of device, remarkable difficulties are generally encountered in the precise fixing of the cursor, which furthermore requires complicated manoeuvers on the part of the user. Another solution is described in French Patent No. 2345960, wherein a band is provided which can be arranged at the top end of the quarter and tightened so as to close one or more openings or slots defined at the upper flap. This form of embodiment has the disadvantage of a difficult coupling of the band to the quarter and a closing action which can only be performed in discrete points, with the consequent difficulty of effecting a precise adjustment. The aim proposed by the invention is indeed to eliminate the above described disadvantages by providing a rear-entry ski boot wherein the adjustment of the flexibility can be performed with great speed and ease, without the need to use elements provided separately or separable from the boot. Within the scope of the above described aim, a particular object of the invention is to provide a rear-entry ski boot in which it is also possible to obtain the extremely rapid and easy closure of the quarters of the boot, furthermore with the possibility of easily recovering the cable used to close the quarters. Still another object of the present invention is to provide a ski boot in which the operation, both of tightening of the quarters and of adjusting the flexibility, can be achieved rapidly and easily. Not a least object of the present invention is to provide a ski boot which is easily obtainable from elements and materials commonly available on the market and which is furthermore advantageous from a purely economical point of view. The above described aim, as well as the objects mentioned and others which will become apparent hereinafter, are achieved by a rear-entry ski boot with a closure and flexibility adjustment device, comprising a shell to which a rear quarter and a front quarter, mutually closeable on each other, are pivotably coupled, characterized in that it comprises closure means for the mutual tightening of said quarters adapted for acting simultaneously also as flexibility adjusters. Further characteristics and advantages will become apparent from the description of a preferred, but not exclusive, embodiment of a rear-entry ski boot with closure and flexibility adjustment device, illustrated only by way of non-limitative example in the accompanying drawings, wherein: Fig. 1 is a partial lateral elevation view of a rear-entry ski boot with the closure means positioned for the obtainment of minimum flexibility; Fig. 2 is a view of the ski boot with the closure means positioned for maximum flexibility with recovery of the cable; Fig. 3 is a schematic view of the ski boot with the closure means in open position; Fig. 4 is a perspective view of the detail of the slot used to adjust the flexibility; and Fig. 5 is a view of the cable positioned to obtain the minimum flexibility. With reference to the above cited figures, the rear-entry ski boot with a closure and flexibility adjustment device, according to the invention, comprises a shell 1 to which a rear quarter 2 and a front quarter 3 are pivotably coupled. To the rear quarter 2 a lever 4 is articulated, with the possibility of rotating about an axis which is substantially horizontal, perpendicular to the longitudinal extension of the shell, and supports a cursor 5, variably positionable along the longitudinal extension of the lever, to which a cable 6 is connected which embraces the front quarter 3. The cursor 5 can naturally be replaced by other per se known elements which can be used to vary the useful length of the cable 6. Said cable 6 extends on rear transmission tabs 10 arranged symmetrically on the rear quarter 2, which in practice provide the support area and the rotation and sliding point for the cable 6. The cable 6 transversely embraces the front quarter 3 so as to be able to perform the mutual closure of the quarters 2 and 3 upon tightening of the lever 4. Furthermore, the closure means used for the mutual tightening of the quarters are also capable of simultaneously performing the adjustment of the flexibility of the quarter. For this purpose, an upwardly open slot 20 is provided in the upper middle region of the front quarter 3, and is provided, at its edges, with transverse notches 21 which provide a plurality of engagement seats for the cable 6, variously positioned with respect to the longitudinal extension of the slot 20. With this arrangement, by positioning the cable 6 at the lowermost notch and performing the closure of the rear lever 4, it is possible to achieve the maximum flexibility, together with the mutual closure of the quarters on one another, the flaps of the slot 20 being free to move apart during the flexing phase of the skier. By varying the position of the cable 6 towards the notches proximate to the free edge of the front quarter 3, it is possible to achieve, together with the mutual closure of the quarters, also the progressive mutual approach of the flaps of the slot 20, which turns into an increasing resistance to a forward slant of the leg of the skier and thus in a progressively decreasing flexibility of the boot. On the front quarter 3, below the notches 21, recesses 22 are provided which allow to extend the range of adjustment of the closure of the boot, without affecting the flexibility, which remains at the maximum value. On the lateral parts of the front quarter 3, front transmission tabs may be provided, indicated by the reference numeral 30, on which the cable 6 unwinds, and which offer the possibility of further increasing the recovery of the cable, since they can be both engaged by the cable accommodated in the recesses 22 or eventually the cable 6 can engage only one front tab or none of them, accordingly varying the useful length of the cable for the closure. From what has been described, it can thus be seen that the invention achieves the proposed aims, and in particular the fact is stressed that closure means are provided which are themselves capable of performing the adjustment of the flexibility, since they are removably engageable with seats defined by notches arranged along the longitudinal extension of the front slot provided on the front quarter, obtaining a greater or smaller spacing of the flaps of the slot and accordingly a smaller or greater flexibility for the boot. Furthermore, the presence of the recesses provided in the lower part of the front quarter allows the possibility of obtaining a recovery of the cable 6 when it is desired simply and exclusively to perform the mutual closure of the quarters, without acting directly on the flexibility. Another important aspect of the invention furthermore resides in the fact that the means used are always connected to the boot, since they are coupled to a lever articulated to the rear quarter which allows the possibility, with the cursor slideable on the lever itself, to adjust the useful length of the cable within a wide margin and accordingly the function which can be performed thereby. In practice, the materials employed, so long as compatible with the specific use, as well as the dimensions and the contingent shapes, may be any according to the requirements.

Claims: Rear-entry ski boot with a closure and flexibility adjustment device, comprising a shell (1) to which a rear quarter (2) and a front quarter (3), mutually closeable together, are pivotably coupled, comprising also closure means for the mutual tightening of said quarters and adapted to act simultaneously as flexibility adjusters, said closure means consisting of a lever (4) supported by said rear quarter (2) and acting through interposed means for adjusting the useful length (5) on a cable (6) embracing said front quarter (3), characterised in that said cable (6) is removably accommodatable in notches (21) provided transversely relatively to a slot (20) defined at the top front edge of said front quarter (3) and extending longitudinally on said front quarter (3). Ski boot, according to the preceding claims, characterized in that it comprises a plurality of said notches (21) mutually spaced along the longitudinal extension of said slot (20). Ski boot, according to one or more of the preceding claims, characterized in that said lever (4) is pivotably coupled to said rear quarter (2) and adapted to rotate around an axis which is substantially perpendicular to the longitudinal extension of the quarter (2) and to the longitudinal extension of the sole of said shell (1). Ski boot, according to one or more of the preceding claims, characterized in that it comprises on said rear quarter (2), rear transmission tabs (10) engageable by said cable (6). Ski boot, according to one or more of the preceding claims, characterized in that it comprises, at the front lower flap of said front quarter (3), at least one recess (22) removably engageable by said cable (6) for the recovery of the useful length of said cable (6). Ski boot, according to one or more of the preceding claims, characterized in that it comprises, at the lateral edges of said front quarter (3), front tabs (30) adapted to act as a support for said cable (6) engaged in said recesses to provided a further recovery of the useful length of said cable (6).

Inventors: SARTOR, MARIANO
Applicants: NORDICA S.P.A.
Application year: 1987
Main classification: A43B5
IPC codes: A43B5, A43B21, A43C11, A43B23