EP3124089A1 - Device for skiing - Google Patents

Abstract

Device for transmitting movement forces of a skier from the lower leg (2) to the ski boot (4), in which a cup-shaped molded body (1) for wrapping the shin bone edge of the lower leg (2) is proposed with a knee-near and a foot-near area, wherein the foot near area in the position of use forms a contact surface which can be enclosed by the shaft (5) of the ski boot (4). The invention allows the skier better control over the ski, since a faster and stronger pressure can be exerted on the forefoot by means of a leverage effect of the ski boot (4) which is prolonged by means of the molded body (1). The molded body (1) also provides protection against friction, knocks or cuts by ski edges and further prevents leg skin inflammation of the shin bone and overloading of the tibia by permanent pressure of the ski boot.

Description

The invention relates to a device for transmitting movement forces of a skier from the lower leg to the ski boot according to the preamble of claim 1.

In ski sports the good control of the skis is crucial. With the help of a ski boot mounted in a ski binding of the ski, a power transmission from the lower leg to the ski, with which the ski is controlled and controlled. Especially in professional skiing the forces acting on the ski are considerable and have to be compensated by the ski boot essentially by the foot, the ankle and the lower leg of the skier. The better the power transmission from the skier's body to the ski is guaranteed, the safer the ski can be mastered and the faster the ski can be driven.

It is now the object of the invention to provide the ski racer with a device which allows him better control over the ski and improves the transmission of movement forces from the lower leg to the ski boot.

This object is achieved by the features of claim 1. Claim 1 refers to a device for transmitting movement forces of a skier from the lower leg to the ski boot, in which according to the invention a cup-shaped molded body for wrapping the shin bone edge of the lower leg is provided as a one-piece tubular hard shell with an upper knee near area, a central calf area and a lower area near the foot is executed, wherein the molded body is slotted in the longitudinal direction and only the lower area near the foot in the position of use forms a bearing surface which can be enclosed by the shaft of the ski boot.

The molded body is worn on the lower leg and extends from the knee area of the lower leg to just above the upper ankle. He is thus embraced in the use position in its lower, near the foot areas of the shaft of the ski boot. The central calf area encompasses in the position of use at least partially the calf of the athlete and in particular the calf muscle (musculus gastrocnemius) and is therefore in use position outside the shaft of the ski boot. The same applies, of course, for the upper, knee-near region of the molding. Since the cup-shaped molded body rests in the position of use on the one hand on the inside of the ski boot shaft and on the other hand projects beyond the ski boot shank, forces can be transmitted from the lower leg to the ski boot. In particular, a faster and stronger pressure on the forefoot can be exerted on the molded body by an extended lever effect of the ski boot. So the momentum can be triggered faster over the lower leg. Of course, the molded body also provides protection against friction, knocks or cuts by ski edges and further prevents leg skin inflammation of the shin bone and overloading of the tibia by permanent pressure of the ski boot.

In order to optimize the transmission of power and to be able to carry the molded body according to the invention within the ski boot, however, an individually tailored to the respective athlete, tailor-made execution of the molding is required, otherwise the wearing of the molding would cause great discomfort. As will be explained in more detail below, preferably methods are used which avoid the production of conventional plaster casts of the lower leg and instead resort to an optical scanning of the lower leg by means of laser beams in order to increase the slight compression of the lower leg caused by the application of the plaster bandages for a plaster cast avoid and get a more accurate image of the lower leg.

The molding body does not completely surround the lower leg in its circumference, but only partially, since otherwise it would hardly be possible to apply the molding. For this purpose, the shaped body is designed so that the shaped body forms a tubular, slotted longitudinally contact surface. He thus encloses the lower leg in its circumference almost completely, but is open in the calf area. Thus, it has a bending elasticity about its longitudinal axis, which facilitates the application of the molding. By almost completely wrapping the lower leg can be done not only in flexion of the knee improved power transmission over the molded body, but also with lateral weight shifts of the skier.

Furthermore, the shaped body can be made thicker in its central regions than in its mutually facing edge regions, so that it has the highest rigidity along the shin bone edge and becomes ever softer in the direction of the fibula bone. On the one hand, this embodiment increases the flexural elasticity and, on the other hand, represents a compromise between the greatest possible hardness and wearing comfort. The material proposed is, for example, carbon fiber prepregs, as will be explained in more detail, since this material makes it possible despite the required shell-shaped very thin design Nevertheless, molded body to produce a dimensionally stable and hard molded body, which is still very light.

• Fig. 1 eine Seitenansicht einer Ausführungsform eines erfindungsgemäßen Formkörpers in Gebrauchslage,
• Fig. 2 eine Vorderansicht des Formkörpers der Fig. 1,
• Fig. 3 eine Rückansicht des Formkörpers der Fig. 1" und die
• Fig. 4 eine Seitenansicht des Formkörpers der Fig. 1 in Gebrauchslage mit Skischuh.

The invention will be explained in more detail below with reference to embodiments with reference to the accompanying drawings. It shows the

• Fig. 1 a side view of an embodiment of a shaped body according to the invention in the position of use,
• Fig. 2 a front view of the molding of the Fig. 1 .
• Fig. 3 a rear view of the molding of the Fig. 1 " and the
• Fig. 4 a side view of the molding of the Fig. 1 in use position with ski boot.

First, on the Fig. 1-3 Reference is made, which show a first embodiment of a shaped body 1 according to the invention in the position of use. The molded body 1 was created on the lower leg 2 of a skier and extends from the knee near area of the lower leg 2 to the foot near the area of the lower leg 2. In the Fig. 2 the knee 8 is marked. Accordingly, the points in the Fig. 1-3 Shaped body 1 shown an upper knee near area 1a, a central calf area 1b and a lower foot near area 1c. About the foot 3 and the lower leg 2, a ski socks or a race suit can be covered, which also covers the molded body 1. During exercise, the molded body 1 is therefore not visible. As in particular from the Fig. 3 As can be seen, the molded body 1 encloses the lower leg in its circumference almost completely and has a longitudinally extending slot 7, so that it is open along the fibula. The molded body 1 is thus tubular and forms a tubular, slotted longitudinally contact surface. It also has a slight bending elasticity about its longitudinal axis, which facilitates the application of the molded body 1.

The Fig. 4 shows the use of the molded body 1 during sports practice. The skier stands with his foot 3 in a ski boot 4, wherein the foot near area 1c of the applied molded body 1 is encompassed by the shaft 5 of the ski boot 4 and forms a contact surface for the shaft 5 as soon as the buckles 6 of the ski boot 4 are closed. The lower, foot near area 1c of the molded body 1 lies between the lower leg 2 and the inner surface of the shaft 5 in each case in close contact. The upper, knee-near region 1a and the central calf region 1b of the molded body 1 project beyond the shaft 5 and lie only in close contact with the lower leg 2. This arrangement now enables a precise transmission of movements of the lower leg 2 on the ski boot 4 and thus the ski. In particular, in flexion of the knee acting on the lower leg 2 form shell 1 acts as a lever which acts on the shaft 5 of the ski boot 4.

The molded body 1 is designed as a one-piece hard shell and remains open only at the back about 1 to 3 cm. The molded body 1 is further constructed to have the highest rigidity along the shin bone edge and to the rear side becomes softer, so that the bending elasticity of the molded body 1 is increased and the application of the molded body 1 is facilitated. The dimensions and the rigidity of the molded body 1 can of course be tailored to the needs of the respective skier. Also, padding on the shin bone edge can be incorporated if necessary and be performed different thickness depending on the needs of the athlete. If necessary, velcro surfaces are arranged on the front side of the molded body 1 in order to ensure a fixation, for example, of stockings, such as football protectors. The molded body 1 can be worn directly on the skin or over a thin stocking. The fixation of the molded body 1 on the lower leg 2 can be additionally reinforced with a hook and loop fastener on the back. The thinnest type of fixation, however, is with a tape tape. The molded body 1 may have on its inside a thin cover, as it is known in orthopedics for orthoses, and which may also be used as a padding.

As already mentioned, an individually tailored to the respective athlete custom-fit execution of the molding 1 is required, otherwise the wearing of the molding 1 would cause great discomfort. To produce the molded body 1, the lower leg 2 and the foot 3 of the athlete are scanned by a 3D scanner with the aid of a laser beam and the contour of which is precisely determined without contact. The contour data can subsequently be used for the control of a CNC milling machine, whereby it is also possible to make changes to the foot or lower leg model using suitable processing software, such as overcorrections on the ankles or on the shin bone edge. These corrections can be made according to the need and need of the athlete. The corrected 3D numerical model is then transferred to the CNC mill, which mills a modeled material, such as hardwood, a modeled image of the lower leg 2 and the foot 3.

The modeled image may further be obtained with a padding attached to the model with clips. Furthermore, sensitive foot areas such as the shin bone edge can be additionally padded with known orthopedic materials. Once all upholstery has been applied, layers of carbon fiber prepregs can be applied. These are commercially available duroplastic fiber-matrix semi-finished products from preimpregnated carbon fibers, but other materials would also be conceivable, such as prepregs with other fibers or thermoplastics. However, carbon fiber prepregs have the great advantage of particularly high rigidity and strength with a small weight. They can be applied to the model depending on the desired dimension and rigidity. For example, in the central areas in the area of Shin edge more prepreg layers are applied than in the edge regions, so that a sufficient bending elasticity for the application of the molded body 1 is ensured. Once all layers of carbon fiber prepregs have been applied, the coated model can be cured under vacuum in the oven at about 80 degrees for 6-8 hours. After curing, the molded body 1 can still be finished, be ground to a desired size.

Thus, a device is available to the skier, which allows him better control over the ski and improves the transmission of movement forces from the lower leg 2 on the ski boot 4. Over the molded body 1 can be exercised by a prolonged leverage of the ski boot 4, a faster and stronger pressure on the forefoot, so that the momentum can be triggered faster on the lower leg 2. Of course, the molded body 1 as mentioned also provides protection against friction, blows or cuts by ski edges and further prevents leg skin inflammations of the shin bone and overloading of the tibia by permanent pressure of the ski boot.

Claims (2)

Device for transmitting movement forces of a skier from the lower leg (2) to the ski boot (4), characterized in that a cup-shaped molded body (1) is provided for wrapping the shin bone edge of the lower leg (2), which is designed as a one-piece tubular hard shell with an upper one knee-shaped region (1a), a central calf region (1b) and a lower region near the foot (1c), wherein the shaped body (1) is slit in the longitudinal direction and only the lower proximal region (1c) in the position of use one of the shaft (5) the ski boot (4) forms umschließbare contact surface. Apparatus according to claim 1, characterized in that the shaped body (1) is made thicker in its central regions than in its mutually facing edge regions.

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