EP1166673A1 - Fastening device for an ice-crampon - Google Patents

Abstract

The system comprises two retractable lateral lugs which are moved laterally by a press button (17c) accessible from the rear of the sole. The lugs are provided in the heel (8b) of the boot (9). The boot front (8c) is held by a stirrup (10). The lugs are engaged in slots (11a) in lateral risers (11).

Description

The present invention relates to ice spikes and systems for securing them under the sole of a walking shoe.

Ice crampons generally include a frame metallic shaped to be pressed under the shoe sole, with anchor points protruding towards the bottom of the frame, and with attachment means for selectively securing the frame to the shoe sole.

Traditionally, the means of attachment include side arm lifts, intended to come resting on the peripheral edge of the sole to prevent longitudinal and lateral movements of the crampon relative to the shoe, and straps connecting the side lifts reinforcement around the foot or ankle to prohibit the vertical movements of the crampon relative to the sole of a shoe. Such a traditional layout requires long and tedious handling of the straps to put on or take off the crampons.

Document DE 521 094 C describes ice spikes which are fixed under the shoe sole by lateral screws worn on the crampon frame and which engage in holes side of the shoe, on the one hand in the anterior zone of shoe, and on the other hand in the posterior shoe area. The fixing does not have a bracket. This structure presents several disadvantages. First, the side screws constitute prominent elements which extend laterally to the outside of the stud frame and are likely to disrupt the progress of the user by hanging the surrounding elements of the land. And most importantly, fixing and the removal of the stud requires the operation of the lateral screws, which is a tedious operation forcing the user to lower to reach each side screw with one hand.

More recently, hooking means have been proposed. comprising a front bracket, into which the front of the shoe sole to prevent its forward movements and upwards, and a rear lever pivoting about an axis transverse and connected to the middle part of the frame by two articulated oblique beams. The lever comes to rest on the edge rear sole to prevent rearward movement and up the shoe heel. The maneuver is faster than with the traditional strap system, but still requires the user bends down to operate the lever at the rear of the the shoe to put or remove the crampon.

The object of the invention is in particular to further simplify the manipulations to put or remove the ice crampon, avoiding to have recourse to all manual operations at least to adapt the ice spike under a shoe. And despite the ease adapting the crampon, it must hold very reliably and rigid under the user's shoe. It is indeed essential that the grip of the crampon under the shoe be extremely reliable because the ice spikes are intended to be used in extreme conditions in high mountains, on slopes very stiff ice, conditions under which the stall or the loss of a crampon can lead to an immediate accident. It is necessary in particular, avoid any untimely unhooking of the crampon.

The invention also aims to facilitate removal voluntary crampon, reducing intervention as much as possible user manual.

One difficulty is that the shoes on which we can adapt the ice spikes are the most often mountain or walking shoes. Use of these shoes gradually causes the wear of the part front and rear part of the sole, notably reducing its thickness and modifying its shape. It is important that the system for attaching the stud under the sole of the shoe does not either not dependent on the shape of the sole and in particular on its state of wear.

Also, the ice crampon fixing system must be compatible with all-terrain use, and in particular in the presence of gravel or ice which could clog all orifices.

To achieve these and other objects, the invention provides a fixing system for securing a crampon to mirror to a shoe sole, comprising a stirrup secured to the ice lug and shaped to receive and hold a first extreme longitudinal area of the shoe sole, and selective attachment means for selectively securing the ice cleat at the second extreme longitudinal region of the sole of a shoe ; the selective attachment means connect selectively the ice lug on the two lateral faces of the second extreme longitudinal zone of shoe sole, putting taking advantage of the fact that the lateral faces of the shoe sole are areas usually not subject to wear as they are relatively little subjected to external aggressions during a normal walking.

• au moins deux ergots latéraux opposés prévus dans la seconde zone longitudinale extrême de semelle de chaussure, déplaçables latéralement entre une position écartée d'accrochage et une position rapprochée de libération,
• au moins deux remontées latérales opposées prévues sur le crampon à glace en correspondance des ergots latéraux d'accrochage, et munies de logements correspondants conformés pour recevoir et retenir les extrémités extérieures des ergots latéraux,
• les ergots latéraux d'accrochage et les logements étant tels que, en position écartée d'accrochage, les extrémités des ergots latéraux dépassent des deux faces latérales de la seconde zone longitudinale extrême de semelle de chaussure et sont engagées dans les logements correspondants pour s'opposer au déplacement relatif du crampon à glace et de la semelle de chaussure verticalement et longitudinalement, et en position rapprochée de libération, les extrémités des ergots latéraux sont en retrait des remontées latérales pour autoriser les déplacements relatifs du crampon à glace et de la semelle de chaussure verticalement et longitudinalement.

According to the invention, the selective attachment means comprise:

• at least two opposite lateral lugs provided in the second extreme longitudinal zone of the shoe sole, which can be moved laterally between a spaced-apart attachment position and a close-release position,
• at least two opposite lateral lifts provided on the ice lug in correspondence with the lateral hooking lugs, and provided with corresponding housings shaped to receive and retain the outer ends of the lateral lugs,
• the lateral hooking lugs and the housings being such that, in the separated hooking position, the ends of the lateral lugs protrude from the two lateral faces of the second extreme longitudinal zone of the shoe sole and are engaged in the corresponding housings for oppose the relative movement of the ice crampon and the shoe sole vertically and longitudinally, and in the close release position, the ends of the lateral lugs are set back from the side lifts to allow the relative movements of the ice crampon and the sole of shoe vertically and longitudinally.

Preferably, in the close release position, the external ends of the lateral pins are retracted to inside the shoe sole.

To facilitate handling, it can be provided that the opposite lateral lugs are stressed in displacement, between their close release position and their spread position hooking, by an extreme pusher provided in the sole of shoe and accessible by the user.

To further reduce the risk of untimely stalling, we can predict that the extreme pusher protrudes frontally the rear end of the shoe sole, and is protected in a light from a later ice crampon rise.

Preferably, to allow walking without risk of degradation of the fastening system, one can predict that, in spread engagement position, the outer ends of the pins lateral out of the shoe sole remaining at the inside of two lateral notches provided on the faces sides of the sole and in which the lifts are engaged side of the ice crampon. In this way, the side lifts engaged in the side notches prevent movement longitudinal relative of the ice lug and the sole of shoe.

To authorize the engagement of the sole on the crampon to glass by simple vertical pressure, we can advantageously provide that the lateral pins are stressed outwards by elastic return means, and the outer ends of the lateral lugs and / or the corresponding lateral lifts of the ice spikes are shaped with introductory facets inclined.

To reduce vertical play and ensure Even more rigid attachment of the ice lug on the sole shoe, we can advantageously provide that the lugs lateral features inclined upper engagement facets outwards.

For the implementation of such a fixing system, the invention provides a mountain shoe whose sole incorporates two laterally movable lateral lugs and their means of travel.

Also, the invention provides an ice lug for the implementation of this system, including lateral lifts to housing for receiving lateral locking lugs. Also, the stud may advantageously include a stirrup anterior and a posterior ascent with a passing light push button.

• la figure 1 est une vue de côté d'un ensemble crampon à glace-chaussure, en position d'engagement partiel ;
• la figure 2 est une vue d'arrière de l'ensemble de la figure 1, dans la position d'engagement partiel ;
• la figure 3 est une vue d'arrière de l'ensemble de la figure 1, en position de fixation ; et
• la figure 4 est une vue de dessous en coupe du talon d'une chaussure incorporant un système de fixation selon un mode de réalisation de la présente invention.

Other objects, characteristics and advantages of the present invention will emerge from the following description of particular embodiments, given in relation to the attached figures, among which:

• Figure 1 is a side view of an ice-shoe crampon assembly, in the partially engaged position;
• Figure 2 is a rear view of the assembly of Figure 1, in the partially engaged position;
• Figure 3 is a rear view of the assembly of Figure 1, in the fixing position; and
• Figure 4 is a bottom view in section of the heel of a shoe incorporating a fastening system according to an embodiment of the present invention.

In the embodiment illustrated in Figures 1 to 3, an ice lug 100 includes a frame 1 in two parts main, namely an anterior part 1a and a part posterior 1b connected to each other by a bar 1c which allows their longitudinal sliding relative to each other for adjusting the length of the clamp according to the size of the shoe to which it must be adapted. Frame 1 has lower attachment points, for penetration into ice on which the user wishes to progress. For example, for a crampon with twelve points as illustrated in the figures, we distinguishes front points such as point 2, points lateral such as lateral points 3, 4, 5, 6 and 7 on a first side and the corresponding lateral points 7a and 6a (Figures 2 and 3) on a second side.

The ice crampon 100 thus formed is intended to be fixed under the sole 8 of a shoe 9. Traditionally, the sole 8 has a front part 8a and a heel 8b. Being a mountain or walking shoe, we understand that the anterior area 8c and the posterior area 8d of the face sole 8 are more stressed and tend to wear out faster than the rest of the sole 8. This results in a variation the thickness of the sole 8 over time.

For its attachment under the sole 8 of the shoe 9, the ice lug 100 includes a stirrup 10 shaped to receive and retain a first extreme longitudinal zone of the sole 8 shoe. In the example illustrated, the bracket 10 is arranged in the front part 1a of frame 1, and is shaped to receive and retain the anterior extreme longitudinal zone 8e of the sole 8. For example, the stirrup is a curved, articulated rod on the front part 1a of reinforcement at two ends lateral such as the end 10a, and forming an arch in which engages the first anterior extreme longitudinal zone 8th of the sole 8, the stirrup 10 coming to engage on the rim upper sole 8.

Selective attachment means make it possible to secure selectively the ice crampon 100 in the second zone longitudinal extreme 8f of the sole 8 of the shoe. In the example illustrated, the selective attachment means make it possible to secure the rear part 1b of frame 1 of the stud to glass 100 in the heel 8b of the shoe 9. According to the invention, the selective attachment means selectively connect said part posterior 1b of reinforcement of the ice crampon 100 on both sides lateral 8g and 8h of the second extreme longitudinal zone 8f or heel 8b of the sole 8 of the shoe.

In the embodiment illustrated in the figures, the ice cleat 100 includes at least two side lifts 11 and 12 opposite, shaped to engage against the faces lateral 8g and 8h respectively of the sole 8 of the shoe.

Also, the selective attachment means comprise at at least two opposite lateral pins 13 and 14, provided in the second extreme longitudinal zone or heel 8b of the sole 8 of shoe. The lateral pins 13 and 14 are movable laterally between a spaced apart attachment position such as illustrated in FIGS. 2 and 3, and a close position of release in which they are retracted inside the shoe sole 8.

The side lifts 11 and 12 of the crampon include housing, advantageously through housing such as light 11a.

The lateral pins 13 and 14 and the housings correspondents such as light 11a are shaped in such a way so that, in the hanging position, the ends of the lateral pins 13 and 14 are engaged in the housings correspondents such as light 11a to oppose relative displacements of the crampon and the sole 8 of the shoe vertically and longitudinally. In the close position of release, the ends of the lateral pins 13 and 14 are in withdrawal of the side lifts 11 and 12 to authorize the relative displacements of the crampon and the sole 8 of the shoe vertically and longitudinally.

In the illustrated embodiment, as we see better on Figure 2, the outer ends of the lateral pins 13 and 14 are wedge shaped, with a lower insertion facet 13a and 14a respectively inclined downwards, so as to allow the engagement of the sole 8 on the frame 1 of the ice lug 100 by simple vertical pressure which pushes back the lateral pins 13 and 14 towards the inside of the sole 8. To allow this automatic engagement function, lateral pins 13 and 14 are requested to move outwards by means elastic which will be described later.

Similarly, to facilitate automatic engagement of the sole 8 in the ice crampon frame 1, provision can be made for the upper ends of the side lifts 11 and 12 are shaped with inclined insertion facets; for example said upper ends are flared outward as seen in Figure 2.

In the embodiment illustrated in the figures, the external ends of the lateral lugs 13 and 14 have at in addition to the respective upper engagement facets 13b and 14b which are slightly tilted outwards. Facets upper engagement 13b and 14b ensure a backlash possible vertical between the ice lug 100 and the sole 8 of shoe by more or less deep engagement of the lateral lugs 13 and 14 in the corresponding housings 11a.

Shoe 9 is generally intended for walking in Mountain. For this, it is necessary to avoid that the sole 8 comprises prominent elements likely to catch the ground or likely to be damaged by impact on rocks. For this, in the embodiment illustrated in the figures, in spread engagement position, the outer ends of the pins lateral 13 and 14 come out of the sole 8 of the shoe remaining at the interior of two respective lateral notches 15 and 16 provided on the respective side faces 8g and 8h of the sole 8.

Advantageously, the side lifts 11 and 12 come engage in the respective lateral notches 15 and 16 when the sole 8 is engaged on the frame 1 of the ice lug. The side notches 15 and 16 are advantageously shaped as corner, as seen in Figure 1, and the side lifts 11 and 12 are shaped into wedges of the same shape, so that the side lifts 11 and 12 engage without play in the notches lateral 15 and 16 and thus oppose relative displacements longitudinal and lateral of the ice lug and sole 8 of shoe.

FIG. 4 illustrates an embodiment of the means actuating the lateral pins 13 and 14 between their position close release and their stuck hanging position. Each lateral lug 13 and 14 slides laterally in the heel Sole 8b, and its inner end 13c or 14c cooperates with an oblique light 17a or 17b of an extreme pusher 17 movable in horizontal longitudinal movement in the heel 8b of the sole 8. The extreme pusher 17 is biased towards the rear by a spring 18, and its rear end 17c protrudes from the back of the heel 8b sole 8 for maneuvering.

Thus, the spring 18 biases the pusher backwards. extreme 17, which in turn urges the pins outwards side 13 and 14 which are thus brought back to the separated position as shown in Figure 4. By pushing the rear end 17c of the extreme pusher 17 inwards of sole 8, the user causes the pusher to slide extreme 17 towards the front, which itself causes the re-entry of lateral lugs 13 and 14 towards the inside of the sole in position close release, the outer ends of the lugs side 13 and 14 then being retracted inside the shoe sole 8.

The extreme pusher 17, in the embodiment illustrated, is accessible from the back of the shoe, and its rear end 17c remains inside a notch rear 19 of sole 8, to avoid the presence of any prominent element.

In the illustrated embodiment, further provision is made protection of the rear end 17c of the extreme pusher, for example by a posterior ascent 20 provided on the frame 1 of the crampon, coming to engage against the posterior face of the heel 8b sole, and comprising a light 20a through which is accessible the rear end 17c of the extreme pusher (figure 3).

As can be seen in the figures, the fixing system ice crampon therefore includes certain elements provided on the crampon 100 itself, and certain other elements provided for in the shoe sole 8.

Thus, the invention provides an ice lug 100 of particular structure, but also a shoe 9 of structure particular, the sole 8 of which incorporates the lateral pins 13 and 14 and the means for moving these pins. The ice crampon 100 includes the side lifts 11 and 12 with housing such that the light 11a, and possibly a posterior ascent 20 to light 20a for access to the extreme pusher.

The present invention is not limited to the modes of which have been explicitly described, but it includes the various variants and generalizations contained in the field of the claims below.

Claims (10)

Fixing system for securing an ice lug (100) to a sole (8) of a shoe (9), comprising a stirrup (10) integral with the ice lug (100) and shaped to receive and retain a first longitudinal zone end (8e) of the sole (8) of the shoe, and selective attachment means (11, 12, 13, 14) for selectively securing the ice lug (100) to the second extreme longitudinal zone (8f) of the shoe sole (8), the selective fastening means comprising: at least two opposite lateral lugs (13, 14) provided in the second extreme longitudinal zone (8f) of the sole (8) of the shoe, displaceable laterally between a spaced-apart position for hooking and a close-up release position, at least two opposite side lifts (11, 12) provided on the ice lug (100) in correspondence with the lateral lugs (13, 14) for attachment, and provided with corresponding housings (11a) shaped to receive and retain the outer ends lateral lugs (13, 14), the lateral lugs (13, 14) for hooking and the housings (11a) being such that, in the separated hooking position, the ends of the lateral lugs (13, 14) protrude from the two lateral faces (8g, 8h) of the second extreme longitudinal zone (8f) of sole (8) of shoe and are engaged in the corresponding housings (11a) to oppose the relative displacement of the ice lug (100) and the sole (8) of shoe vertically and longitudinally , and in the close release position, the ends of the lateral lugs (13, 14) are set back from the lateral lifts (11, 12) to allow the relative movements of the ice lug (100) and the sole (8) of the shoe vertically and longitudinally. System according to claim 1, characterized in that , in the close release position, the external ends of the lateral lugs (13, 14) are retracted inside the sole (8) of the shoe. System according to one of claims 1 or 2, characterized in that the opposite lateral pins (13, 14) are biased in displacement, between their close release position and their separated hooking position, by an extreme pusher (17) provided in the shoe sole (8) and accessible by the user. System according to claim 3, characterized in that the extreme pusher (17) protrudes frontally from the rear end (8b) of the sole of the shoe, and is protected in a slot (20a) from a rear rise (20) of the spike ice cream. System according to any one of Claims 1 to 4, characterized in that , in the separated position of engagement, the external ends of the lateral pins (13, 14) protrude from the sole (8) of the shoe while remaining inside two lateral notches (15, 16) provided on the lateral faces (8g, 8h) of the sole and in which engage the lateral lifts (11, 12) of the ice lug (100), so that the lateral lifts ( 11, 12) engaged in the lateral notches (15, 16) oppose the relative longitudinal displacements of the ice lug (100) and the sole (8) of the shoe. System according to any one of Claims 1 to 5, characterized in that the lateral pins (13, 14) are biased towards the outside by elastic return means (18), and the external ends of the lateral pins (13, 14) and / or the corresponding side lifts (11, 12) of the ice crampon (100) are shaped with inclined insertion facets (13a, 14a), so as to authorize the engagement of the sole (8) on the ice spike (100) by simple vertical pressure. System according to any one of Claims 1 to 6, characterized in that the lateral pins (13, 14) comprise upper engagement facets (13b, 14b) inclined towards the outside. Mountain boot for implementing a system according to any one of Claims 1 to 7, characterized in that its sole (8) incorporates two lateral lugs (13, 14) which can be moved laterally, and their means of movement ( 17, 18). Ice crampon (100) for implementing a system according to any one of Claims 1 to 7, characterized in that it comprises lateral lifts (11, 12) with receptacles (11a) for receiving lateral locking lugs. Ice crampon according to claim 9, characterized in that it comprises a front stirrup (10), and a rear rise (20) with a light (20a) for passing the pusher.

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