Ski boot with improved fit

Abstract: The present invention relates to a ski boot with improved fit, comprising a shell (2) to which at least one quarter (3) is articulated. The peculiarity of the invention resides in that it comprises a movable flap (8) which is 8 arranged at a preset opening provided on the at least one quarter and rearwardly embraces the skier's leg. Means (111) for selecting the inclination of the flap with respect to the at least one quarter are associated with the flap itself and can be actuated by the skier.

Description: The present invention relates to a ski boot with improved fit. The problem is currently felt of providing a boot which allows the skier to walk correctly after he has stopped skiing. This problem adds to that of keeping the foot correctly secured inside the boot; the mere opening of the quarter or quarters, in fact, allows snow to enter and also produces an unpleasant play of the foot inside the boot. At the same time, it is important to maintain a good rear support for the leg both during skiing and while walking. In view of these problems, many kinds of ski boot are currently known which partially and individually solve the above described problems. A monolithic rear-entry boot is in fact known from FR-A-2 567 374 which allows to vary the inclination of the leg by acting on adapted levers, which however also adjust the degree of securing of said leg. Said ski boot comprises a shell to which at least one quarter is articulated, means for releasably closing the quarter, a movable flap for rearwardly embracing a skier's leg and means, associated with said flap and actuatable by the skier, for selecting the inclination of said flap with respect to said quarter by means of co-operating with at least one fraction element. A US patent, No. 4203235, is also known which describes a boot which has a rear support adjuster which besides having the disadvantage of acting only on the part of the leg which is outside the boot has a single degree of adjustment which can be set by inserting an adapted wedge. In order to vary the inclination it is therefore necessary to remove said wedge and/or replace it with others of different sizes; such an operation is undoubtedly not easy, and the skier must furthermore have a plurality of wedges easily available. A ski boot particularly for mountain skiing is also known in which the rear quarter is rearwardly provided with a notch in which the edges can partially overlap and be moved closer by using a band which can be tensioned by means of a lever: even in this case, however, there is a dependency between the degree of securing of the quarter and the inclination which can be set for said quarter by acting on said lever. As a partial solution to this disadvantage, the same Applicant submitted on 8.1.1987 a European application, EP-A-0 229 638 claiming a support adjuster for ski boot quarters, the peculiarity whereof resides in that it comprises a shaped body which embraces at least one portion of the skier's leg and is supported at the upper end of the quarter of a boot, removable locking means for positioning said shaped body with respect to the quarter being furthermore provided. Said support adjuster, however, has a rather complicated structure from the point of view of production which increases its overall cost, and its adjustment is not very easy since the skier must act directly on the shaped body to incline it and the backward motion of said body must occur while keeping constantly pressed a release button which constitutes said removable locking means. The aim of the present invention is therefore to eliminate the disadvantages described above in known types by providing a ski boot which allows to vary the possible position of the leg by varying the inclination which can be obtained thereby in the direction of the rear region of said boot, regardless of the securing degree of the quarter. Within the scope of the above described aim, an important object is to provide a boot which allows to walk easily once said boot has been released from the ski, allowing the skier to keep an upright position during this phase. Another important object is to provide a boot which allows to easily insert the foot, maintaining a good rear support of the leg. Not least object is to provide a ski boot which associates the above described characteristics with that of being safe and reliable in use, of being structurally simple and of having a low cost, said boot being producible with conventional machines and systems. This aim, these objects and others which will become apparent hereinafter are achieved by a front-entry ski boot with improved fit, comprising a shell to which at least one quarter is articulated, the boot further comprising means for releasably closing the quarter, whereby said quarter is provided with a rearward opening which extends along substantially all of its longitudinal extension starting from the upper perimetric edge thereof down to a bridge thereof which is arranged at the heel region, the boot further comprising a movable flap for rearwardly embracing a skier's leg which is arranged at said opening, and means, associated with said flap and actuatable by the skier, for selecting the inclination of said flap with respect to said quarter by means of co-operating with at least one traction element. Said flap is advantageously obtained by molding from said shell or said at least one quarter or is connected to means for articulating it to said shell or to said at least one quarter. Said means for selecting the inclination of said flap with respect to said at least one quarter are conveniently constituted by a tensioning and/or adjustment element, such as a vertical lever or a circular winding device which tensions at least one traction element such as a cable. Further characteristics and advantages will become apparent from the detailed description of a particular but not exclusive embodiment, illustrated only by way of non-limitative example in the accompanying drawings, wherein: figures 1 and 2 are side views of a ski boot to which the movable flap is applied, in two different positions obtainable by said flap; figure 3 is a rear isometric view of the connection between said flap and said quarter according to a first embodiment; figure 4 is a view of a first embodiment of the means for selecting the inclination of said flap with respect to said quarter; figure 5 is a sectional lateral elevation view of the inclination selection means, constituted by a vertical lever; figure 6 is a view of a boot fitted with a flap according to a further embodiment; figure 7 is a view of a boot according to another embodiment; figure 8 is a view of a second embodiment of said means for selecting the inclination of said flap; figure 9 is a lateral view of a shell in which said flap is provided during molding; figure 10 is a side view of a shell in which said flap is articulated laterally to said shell. With reference to the above described figures, the reference numeral 1 indicates a ski boot, particularly of the front-entry type, constituted by a shell 2 to which a quarter 3 is articulated. Said quarter has, at its rear region, an opening 4 which affects almost all of its longitudinal extension starting from its upper perimetric edge 5. A bridge 7 is thus defined at the heel region 6, and the end of a flap 8 which rearwardly embraces the calf of the skier is articulated to said bridge and is arranged at the opening 4 provided on said quarter. The flap 8 is advantageously fixed by means of a lower tooth 9a which fits snugly in a slot 9b provided in the quarter 3, as illustrated in figures 3 and 4. Said flap 8 may also be articulated to the bridge 7 by means of an adapted plate 9c (as illustrated in figure 6) or possibly by means of an adapted pivoting pin arranged transversely to said quarter 3. By virtue of the presence of the plate 9 arranged transversely to the quarter, it is possible to move said flap so as to make it approach the inner shoe 10 of the boot or move away therefrom. Means for selecting the inclination of said flap 8 with respect to the quarter 3 are furthermore associated with the flap itself and can be constituted for example by a vertical lever 11, illustrated in figure 7, which has a pivot 12 interacting with a rack 13 arranged longitudinally to the flap 8; as an alternative, the rack can be provided on the lever. Adapted traction elements, such as for example cables 14, are associated laterally to the vertical lever 11 and interact with a first return element arranged laterally to the flap 8 and then with a second return element 16 which protrudes internally and laterally to the front quarter 3, and is then again associated with the flap 8. The inclination selection means may also be constituted by a lever 111, of the kind illustrated in figure 5, comprising a lever arm 112 which is pivoted at the pivot 113 and acts on a cable 14 by means of a slider 114. The tension of the cable 14 is adjusted, when the arm 2 is open as illustrated in broken lines in figure 5, by adjusting the position of the slider 114 with respect to the teeth 115 of the arm 2. A cover 116 is pivoted to the pivot 113 and allows a greater rotation of the arm 2 during opening, returning partially within the lever body, as illustrated in broken lines in the figure. As an alternative to the vertical lever 11 and 111, a circular winding device 17 can be used; said device is rotatably associated rearwardly to the flap 8 and actuates an adapted pulley to wind up one or more cables 14 which laterally affect the flap 8, then an adapted second return element 16 which protrudes internally and laterally to the quarter 3, and is then again associated with the flap 8. The cables 14 can thus be rapidly wound, imparting a different inclination to the flap 8 with respect to the quarter 3, which is closed by means of adapted known devices such as for example levers 18. This allows an adjustment which is independent from the degree of securing of the quarter. By loosening the degree of tensioning of the cables 14, the flap 8 can be arranged in the reclined condition illustrated in figure 2; in this condition it is possible to maintain an upright posture while walking, and it is easier to insert the foot in the boot. The use of a vertical lever 11, 111 furthermore allows to memorize the selected degree of inclination, and it is therefore sufficient to close said lever by inclining the flap by the previously selected amount to pass from the walking condition to the skiing condition. It has thus been observed that the invention achieves the intended aim and objects, a ski boot having been provided in which it is possible to vary the position of the leg regardless of the degree of securing of the quarter. The skier can just as easily start walking after performing a simple operation, keeping his leg in an upright position, i.e. approximately perpendicular to the ground support plane. The boot also provides a good rear support for the leg, allowing the skier to easily insert his foot. The use of means such as vertical levers or circular devices reduces the effort required to incline the flap without furthermore pressing at the calf while winding the cables. The lateral wings of the quarter 3 are in fact not subject, at the opening 4, to any deformation which causes said wings to approach one another. The invention is naturally susceptible to numerous modifications and variations, all of which are within the scope of the same inventive concept. Thus for example figure 4 illustrates a shell 102 which has a flap 108 at the rear region overlying the heel region 106; said flap 108 protrudes on the opposite side with respect to the sole and embraces the region of the skier's calf. A means for selecting said flap's inclination with respect to the quarter is advantageously rearwardly associated with said flap 108; said flap is constituted by one of the above defined systems, comprising, for example, a knob 117. Figure 10 illustrates a further embodiment, in which the wings 219 of a flap 208 which embraces the skier's heel region are laterally articulated to a shell 202. In this case, too, means for selecting the inclination of the flap with respect to the quarter are advantageously associated with said flap 208. The materials and the dimensions constituting the individual components of the boot may naturally be the most pertinent according to the specific requirements. Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference signs do not have any limiting effect on the scope of each element identified by way of example by such reference signs.

Claims: A front-entry ski boot with improved fit, comprising a shell (2,102,202) to which at least one quarter (3) is articulated, the boot further comprising means (18) for releasably closing the quarter, whereby said quarter is provided with a rearward opening (4) which extends along substantially all of its longitudinal extension starting from the upper perimetric edge (5) thereof down to a bridge (7) thereof which is arranged at the heel region (6), the boot further comprising a movable flap (8,108,208) for rearwardly embracing a skier's leg which is arranged at said opening (4), and means (11,17,111,117,217), associated with said flap and actuatable by the skier, for selecting the inclination of said flap with respect to said quarter by means of co-operating with at least one traction element (14). Boot according to claim 1, whereby means (9a,9c,219) are connected to said flap (8,108,208) to articulate it to said shell (2,102,202) or to said at least one quarter (3). Boot according to one or more of the preceding claims, whereby said flap (108) is obtained by molding from said shell (102) or from said at least one quarter. Boot according to claim 2, whereby said flap (208) which embraces the skier's leg has two lateral wings (219) at its ends which can be pivoted laterally to said shell (202). Boot according to claim 2, whereby an end of said flap (8) is articulated to said bridge (7). Boot according to claim 2, whereby said means for articulating said flap to said bridge are constituted by a plate (9c) arranged transversely to said quarter. Boot according to one or more of the preceding claims, whereby said means for selecting the inclination of said flap with respect to said at least one quarter are constituted by a vertical lever (11) which has, at one end, a pivot (12) which interacts with a rack (13) arranged longitudinally to said flap, traction elements (14) being laterally associated with said vertical lever, said elements interacting with a first return element (15) arranged laterally to said flap and subsequently with a second return element (16) which protrudes internally and laterally to said quarter, said elements being coupled to said flap at the free end thereof. Boot according to one or more of claims 1-6, whereby said means for selecting the inclination of said flap with respect to said at least one quarter are constituted by a circular winding device (17) which is rearwardly associated with said flap and actuates an adapted pulley for winding at least one cable (14) which laterally affects said flap, then an adapted second return element (16) which protrudes internally and laterally to said quarter so as to be associated with said flap or circular winding device. Boot according to one or more of claims 1-6, whereby said inclination selection means comprise a lever (111) which comprises an arm (112) pivoted to said flap (8) by means of a pivot (113), said arm comprising a slider (114) associated with a cable (14), the position of said slider with respect to said arm being adjustable to adjust the tension of said cable. Boot according to claim 2, whereby said means for articulating said flap (8) to said quarter (3) comprise a tooth (9a) which can be inserted in a slot (9b) provided in said quarter.

Inventors: SARTOR MARIANO, SARTOR, MARIANO
Applicants: NORDICA SPA, NORDICA S.P.A.
Application year: 1989
Main classification: A43B5
IPC codes: A43B5