CH659766A5 - SKI BOOT. - Google Patents

Description

The present invention relates to a new embodiment of the invention according to Swiss patent 650386, which relates to a ski boot comprising:

- a rigid shell,

A foot holding system arranged inside the rigid shell, said system comprising:

At least one support element interposed between said shell and the skier's foot, partially surrounding it, and

- an adjustable clamping device for the support element comprising:

Means for pressurizing said support element on the foot, as well as

- control means located or not outside the hull to tension said pressurizing means,

characterized in that said means for pressurizing the support element form approximately a flexible arc, one end of which is situated respectively near one of the lateral edges of the inner sole of the rigid shell, while the other is located near the top line of the top of the skier's foot, said ends defining an oblique cord relative to the plane of the inner sole of the boot and extending transversely to the longitudinal axis of the interior rigid shell.

With such a device, one obtains a tightening of the foot in the shoe such that the latter is preferably pressed against the internal wall of the shoe so that the contact of the foot with the shell is improved, which increases the handling precision of the skis. The advantage of this type of device, intended in particular to guarantee the holding of the forefoot, is no longer to be demonstrated. However, in certain cases, it is advantageous for the skier to be able to decompress his foot when he is in a queue or to walk, and then regain, without having to screw or unscrew anything, his position of initial tightening.

The present invention relates to an improvement to the device which has just been mentioned which makes it possible to obtain rapid tightening-loosening of the foot in the shoe according to a previously chosen adjustment.

In an embodiment described in the document cited above, the tightening of the forefoot, for example, is obtained by displacement of a nut along a threaded rod. With such a system, when the skier wants to loosen his foot, he is obliged to unscrew the nut completely, and he must then repeat this maneuver whenever necessary, with the risk of losing his initially chosen adjustment position. It is this type of drawback that the present invention proposes to remedy.

The characteristics of the invention, set out in claim 1, are set out in the description which follows, with reference to the appended drawings, given by way of non-limiting example, and which will make it clear how the invention can be implemented, the features which emerge both from the drawings and from the text which are of course part of the said invention.

Figure 1 is a perspective view of a ski boot provided with a tightening device according to the invention.

Figure 2 is a sectional view showing the quick-tightening-tightening adjustment device in the tightened position.

Figure 3 is a sectional view in the released position.

Figure 4 is a partial sectional view of the sleeve mounted on the rod at the location of the rotary drive keyway.

The adjustable clamping device represented in FIGS. 1 to 4 is an alternative embodiment according to the invention aimed at improving the embodiments described in Swiss patent 650386. Advantageously, the adjustable clamping device (2) is associated with an element of support (3), consisting for example of a so-called pressure distribution plate in a ski boot (1) with a rigid shell (4). This element can be made up of semi-rigid, rigid support plates, etc. The rapid tightening adjustment device comprises means for pressurizing the support element on the foot and control means located or not outside the bottom of the shell for tensioning said pressurizing means .

In particular, the means for pressurizing the support element consist of a relatively flexible strap (5) hooked on the one hand to the inner wall (4 ') of the bottom of the shell (4) located on the external side. of the shell, this connection (7) being produced by means of the internal sole (6) (placed in the shell) to which it is fixed by means known per se and, on the other hand, at its other end (8) on a nut (9) belonging to the control means. This nut (9) is mounted on a threaded ring (10), itself slidably mounted on a smooth rod (11). The smooth rod (11) is arranged transversely to the longitudinal axis of the bottom of the hull in the area above the foot corresponding approximately to the metatarsal heads. The rod (11) is made integral with the bottom of the hull in a manner known per se by a pin (12) clipped between two s

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bosses (13, 13 ') from the inside of the inner side of the bottom of the hull for one of its ends, and in a bearing (14) from the outer side of the bottom of the hull for the other end. Furthermore, this outer end (15) is provided with a stop shoulder (16) of the threaded ring (10), said shoulder (16) having a rectangular section, 5 defining two flats (17,17 ') d 'rotation drive respectively of the threaded ring (10) and the operating member (18). The rectangular section end of the rod is then housed in a yoke (19) of the operating member (18), itself provided with an operating cam (20) supported on a washer 10

support (21) located outside the bottom wall of the hull.

In the clamped position (fig. 2), the flat face (22) of the yoke-cam (19, 20) presses on the washer (21) which thus keeps the threaded ring (10) in the pushed-back position, this against the action a compression spring (23) (or other elastic compressible means) centered on the rod (11) and placed between the internal end (10 ') and the edges of the bosses (13,13') of the bottom of the shell.

In the loosened position (fig. 3), the skier, after having manipulated the operating member (18) according to the arrow (24) (indicated in fig. 2),

sees the outer end (10 ") of the threaded ring (10) move 20

outwards under the action of the compression spring (23) which relaxes and thus pushes the ring back on the rod. This ring provided with a guide slot (25) is then guided in translation by means of the shoulder (16), the flat section of which is intended to come to cooperate with the guide slot. The actuator (18) being in the released position, the skier then has the possibility of adjusting its tightening by turning the lever (for example according to the arrow (26) in fig. 3), which has the effect of displacing the position of the nut (9) on the ring (10), and therefore to modify the tightening value. Once this adjustment has been made, the skier only has to lower the lever (arrow 27), which has the effect of actuating the operating cam which rests on the washer and causes the threaded ring (10 ) towards the inside of the shell against the action of the compression spring (23). The skier can then loosen and tighten his foot at will for a chosen setting. The shoe according to the invention thus makes it possible to obtain a tightening of the foot with memorized adjustment, the effect of which is obtained by the additional displacement to the micrometric adjustment displacement of the screw-nut system of the upper point of the oblique cord, the additional displacement being defined by the path traveled by the constant value cam.

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2 sheets of drawings

Claims (4)

659766 1. Ski boot comprising a rigid shell, a foot holding system disposed inside the rigid shell, this system comprising at least one support element interposed between the shell and the skier's foot by partially surrounding it and an adjustable clamping device for the support element comprising means for pressurizing the support element on the foot as well as control means located or not outside the shell to tension the pressurizing means, the pressurizing means of the support element forming approximately a flexible arc, one end of which is located respectively near one of the lateral edges of the inner sole of the shell , while the other is located near the top line of the top of the skier's foot, said ends defining an oblique cord relative to the plane of the inner sole of the boot and extending transversely to the longitudinal axis of the inside the rigid shell, characterized in that the internal holding system (2) of the foot comprises means for adjusting (9, 10) the position of the upper end (8) of the oblique cord defined by the setting means in pressure (5) forming a flexible arc on the foot, said adjustment means (9,10) being associated with rapid clamping means (20,21) allowing to move by a predetermined amplitude said upper end (8) to against an elastic compression element (23) without modifying the relative positions of the adjustment means (9, 10) between them, the adjustment means (9, 10) and the rapid clamping means (20, 21) being independently actuable by the same operating member (18). 2. Ski boot according to claim 1, characterized in that the adjustment means consist of a screw-nut system comprising a threaded ring (10) slidably mounted on a guide rod (11) and screwed onto said ring, a nut (9) to which the pressurizing means (5) are connected. 2 3. Ski boot according to claim 2, characterized in that the rapid clamping means consist of an operating cam (20) articulated on the outer end of the guide rod (11) and bearing against the outer end of the threaded ring (10) held in contact with said cam (20) by means of a compression spring (23) acting between the inner wall of the bottom of the hull and the inner end (10 ') of said ring. 4. Ski boot according to one of claims 2 or 3, characterized in that the guide rod (11) has a smooth portion (11 ') on which slides the ring (10) mounted inside the shell and a part comprising at least one drive flat (17) situated parallel to the outside of the shell on which said operating cam (20) is articulated on the one hand, and with which on the other hand a slot ( 25) for maintaining in translation belonging to the threaded ring (10).