DE102021110559B4 - Ski with anti-slip device - Google Patents

Abstract

Ski comprising a basic ski body (2) with a sliding surface (3) and a binding part (4) to which a skier's boot can be attached, the binding part (4) being fixed to the basic ski body (2) so that it can be displaced in the longitudinal direction (LR), At least one control surface (5) is provided on the binding part (4) or on a functional part connected to the binding part (4), which interacts at least indirectly with at least one mandrel (6, 6') displaceably mounted in the basic ski body (2), the Mandrel (6, 6') is positioned in a first, front sliding position of the binding part (4) in a pushed-back position in which the free end (6.1, 6.1') of the mandrel (6, 6') does not protrude over the sliding surface (3 ) protrudes, and the control surface (5) interacts at least indirectly with the mandrel (6, 6') in such a way that when the binding part (4) is displaced relative to the basic ski body (2) from the first, front sliding position to a second, rear sliding position the mandrel (6, 6') is positioned in an advanced position in which the free end (6.1, 6.1') protrudes beyond the sliding surface (3), the control surface (5) being an inclined plane which, when the Binding part (4) is displaced translationally in the longitudinal direction (LR) of the ski base body (2).

Description

The invention relates to a ski with means for reducing backward sliding.

Skis, in particular cross-country skis, with anti-slip devices are known in principle. Cross-country skis can have scales in a central region of the ski, which are intended to prevent the ski from sliding back when the cross-country skier pushes off. It is also known to apply grip wax or skins to cross-country skis, which are intended to prevent the ski from sliding back.

In touring skis in particular, so-called climbing skins are used to prevent slipping back. They should prevent the skis from slipping backwards during the ascent, but should also allow gliding forwards.

The pamphlet DE 30 40 253 A1 discloses a device for influencing the ground contact of skis, which has a base plate with attached pins which can be pressed into the snow.

The pamphlet DE 10 2011 053 008 A1 discloses a device for preventing kickback of a ski. The ski has a pivotable latch support which pivots out of a rebate of the ski by a reciprocating boot mount to prevent back-slipping.

The pamphlet DE 44 38 636 C1 discloses a device for sliding back a ski.

A significant disadvantage of known anti-slip devices is that their effect depends very much on the current underground conditions and the temperature. Especially on icy ground, known anti-sliding devices show relatively little effect and can only adequately prevent undesired sliding back. In addition, known anti-slip devices also impair the gliding behavior of the ski in the running direction, which is fundamentally undesirable

Proceeding from this, it is the object of the invention to specify a ski which has an effectively effective anti-slip device and at the same time shows good gliding properties in cases where no anti-slide device is necessary.

The object is solved by a ski with the features of independent patent claim 1 . Preferred embodiments are the subject matter of the dependent claims.

In one aspect, the invention relates to a ski. The ski comprises a basic ski body with a sliding surface and a binding part to which a skier's boot can be fastened. The binding part is, for example, a commercially available cross-country ski binding or touring ski binding. The binding part is fixed to the basic ski body so that it can be displaced in the longitudinal direction. As a result, the binding part can be shifted between a first and second sliding position in the longitudinal direction of the ski. At least one control surface is provided on the binding part or on a functional part connected to the binding part, which interacts at least indirectly with at least one mandrel displaceably mounted in the ski base body. In particular, the mandrel rests against the control surface with its free end facing away from the sliding surface. The interaction is in particular such that the at least one mandrel is moved, in particular can be displaced, by the displacement of the binding part. This displacement is brought about in particular by the action of the control surface on the free end of the at least one mandrel. The at least one mandrel is positioned in a first, front sliding position of the binding part in a pushed-back position in which the free end of the mandrel does not protrude beyond the sliding surface, i.e. the free end of the mandrel is pushed into the basic ski body. The control surface interacts at least indirectly with the mandrel in such a way that when the binding part is displaced relative to the basic ski body from the first, front shifting position to a second, rearward shifting position, for example when the skier pushes off, the mandrel is positioned in an advanced position, in the free end of which protrudes over the sliding surface, in order to prevent the ski from slipping back during the push-off movement by engaging in the ground.

The technical advantage of the ski is that a back-slip protection is created, which is activated during the normal course of movement of the skier when pushing off and is deactivated when the ski is subsequently pulled towards it, and can therefore be operated intuitively. In addition, the ski offers an effective anti-backslip protection, which has an effective effect against backsliding in different ground conditions, especially when it is heavily icy.

According to one embodiment, the mandrel is positioned in the retracted position by means of a spring. This ensures that the mandrel is pushed into the ski, i.e. the anti-slip device is deactivated, without external force being applied, which can be caused by the skier pushing off, for example.

The spring loading of the mandrel can be done in different ways. Thus, the mandrel can be directly spring-loaded by a spring acting directly on the mandrel. For example, the spring can be a compression spring acting between the ski and the mandrel. It can, for example, run around the circumference of the mandrel.

Alternatively, the mandrel can also be indirectly spring-loaded, i.e. the spring does not act directly on the mandrel, but via an intermediate element. For example, the spring can act on the displaceable binding part itself and hold the binding part in the first, front, sliding position without the application of external force. In order to be able to move the mandrel in both directions, a positive connection can be provided between the binding part or a functional part connected to the binding part and the mandrel. For example, in the area of the control surface, a restricted guide for the mandrel can be provided, which at least partially surrounds the mandrel, for example at the free end. Due to the form-fitting connection, the mandrel is positioned either in the pushed-back position or in the pushed-forward position, depending on the sliding position of the binding part.

It is also conceivable that both a spring acting directly on the mandrel and a spring acting on the binding part are provided.

It should be noted that it is possible to completely dispense with the spring loading of the spikes and/or the binding part, so that the activation and deactivation of the anti-slip device is carried out solely by the forces applied by the skier. In this case, however, the above-described restricted guidance for the at least one mandrel should be provided in the area of the control surface.

According to the invention, the control surface is an inclined plane which is displaced in a translatory manner when the binding part is displaced in the longitudinal direction of the basic ski body. As a result of the displacement of the control surface, the at least one mandrel is displaced along its longitudinal axis, specifically from the retracted position, in which the mandrel is positioned due to its spring loading, into an advanced position. As a result, a sliding movement of the binding part along the longitudinal axis of the ski can be converted into a sliding direction of the mandrels that runs transversely to this longitudinal axis and is directed downwards.

According to one exemplary embodiment, the control surface is provided directly on the binding part itself or on a functional part that is detachably attached to the binding part. The functional part can, for example, be an insert coupled to the binding part, which can be removed separately in order to be able to carry out maintenance and repair work on the anti-slip device, in particular on the spikes.

According to one embodiment, the control surface is an inclined plane which forms an acute angle with the sliding surface of the ski, which angle opens counter to the running direction of the ski, i.e. towards the back of the ski. As a result, a sliding movement of the binding part running in a horizontal direction can be converted into a sliding direction of the mandrels directed obliquely downwards.

According to one exemplary embodiment, the control surface forms an angle with the sliding surface in the range between 10° and 60°, for example between 15° and 45°, preferably between 25° and 35°, in particular between 28° and 32°. The choice of this angle has an advantageous effect on the triggering time of the anti-slip device when the skier pushes off and also leads to a high level of functional reliability.

According to one embodiment, the longitudinal axis of the at least one mandrel runs obliquely to the sliding surface in such a way that the longitudinal axis of the at least one mandrel encloses an acute angle with the sliding surface of the ski, which angle opens in the running direction of the ski, i.e. towards the front of the ski. This inclined position of the at least one mandrel causes it to be pushed out of the sliding surface at an angle to the rear, thereby having an advantageous effect against the ski sliding back.

According to one embodiment, the longitudinal axis of the at least one mandrel forms an angle with the sliding surface in the range between 30° and 80°, for example between 45° and 75°, preferably between 55° and 65°, in particular between 58° and 62°. This inclined position of the at least one mandrel is advantageous because a particularly effective means of preventing the mandrel from slipping back is achieved while at the same time the mandrels are pushed out safely, which is synchronized with the sequence of movements of the skier.

According to one exemplary embodiment, at least two mandrels are provided, which are arranged one behind the other as seen in the longitudinal direction. As a result, an advantageous anti-slip device can be achieved, which also leads to the least possible weakening of the ski.

According to one embodiment, the longitudinal axes of the at least two mandrels run parallel to one another. As a result, the spikes in the ski are oriented in a similar way and engage the ground in the same direction. In addition, the mandrels can be fitted with an identically designed sliding link in Shape of the same oriented control surfaces are controlled.

According to one embodiment, the spikes are provided centrally or substantially centrally in the ski with respect to the transverse direction of the ski. As a result, the spikes come to lie one behind the other as seen in the longitudinal direction of the ski, which offers advantages with regard to the integration of the spikes into the ski.

According to one exemplary embodiment, at least two spikes are arranged laterally offset from one another, viewed in the longitudinal direction of the ski. As a result, a compact integration of the anti-slip device into the ski can be achieved.

According to one exemplary embodiment, the binding part is slidably guided in a rail attached to the basic ski body. This achieves a sliding guide for the binding part, so that the binding part can slide backwards slightly when the skier pushes off and the anti-slip device can thus be activated.

According to one exemplary embodiment, the binding part is designed to be shifted from a front position to a rear position, which is shifted counter to the running direction, when the skier pushes off. As a result, triggered by the skier's normal movement sequence, activation of the anti-slip device is achieved.

According to one embodiment, the displacement path of the binding part is less than 5 cm, preferably less than 3 cm. With a very small displacement path, which is hardly noticeable to the skier, the slide back of the ski can be effectively reduced.

The ski can be a cross-country ski or a touring ski.

The free end of the mandrel protruding from the ski in the advanced position can be bolt-like and, for example, tapered or tapered to a point. Alternatively, the free end of the mandrel can form a flat, for example platelet-shaped or spade-like section, which runs transversely to the running direction, so that a large-scale intervention in the snow can be achieved. This can be particularly advantageous for touring skis.

The terms “approximately”, “substantially” or “roughly” mean deviations from the exact value by +/-10%, preferably by +/-5% and/or deviations in the form of changes that are insignificant for the function .

Further developments, advantages and possible applications of the invention also result from the following description of exemplary embodiments and from the figures. All of the features described and/or illustrated are fundamentally the subject matter of the invention, either alone or in any combination, regardless of how they are summarized in the claims or how they relate back to them. The content of the claims is also made part of the description.

• 1 beispielhaft eine Draufsichtdarstellung auf eine Skibindung von oben;
• 2 beispielhaft einen Längsschnitt durch die Skibindung entlang der Schnittlinie A-A gemäß 1, wobei sich der die Dorne bewegende Bindungsteil in der vorderen Schiebeposition befindet und damit die Dorne in den Skigrundkörper eingeschoben sind; und
• 3 beispielhaft einen Längsschnitt durch die Skibindung entlang der Schnittlinie A-A gemäß 1, wobei sich der die Dorne bewegende Bindungsteil in der hinteren Schiebeposition befindet und damit die Dorne aus dem Skigrundkörper abschnittsweise herausgeschoben sind.

The invention is explained in more detail below with reference to several figures of exemplary embodiments. Show it:

• 1 by way of example, a plan view of a ski binding from above;
• 2 for example a longitudinal section through the ski binding along the section line AA according to FIG 1 , wherein the binding part that moves the spikes is in the front sliding position and the spikes are thus pushed into the basic ski body; and
• 3 for example a longitudinal section through the ski binding along the section line AA according to FIG 1 , wherein the binding part that moves the spikes is in the rear sliding position and the spikes are thus pushed out of the basic ski body in sections.

1 shows an exemplary and schematic plan view of a section of a ski 1 on which a binding part 4 is provided. The ski 1 has a basic ski body 2 with a sliding surface 3 in a known manner. The ski 1 can, for example, be a touring ski or a cross-country ski, in particular a cross-country ski for classic cross-country skiing. The ski 1 has a running direction LR, as shown in 1 is shown The formation part 4 has fixing means to which a shoe of a skier can be fixed. In particular, the fixing means are designed in such a way that they interact with corresponding fixing means provided on the front of the shoe, so that a detachable connection is created between the skier's shoe and the ski.

The binding part 4 is held displaceably on the ski base body 2 in such a way that the formation part 4 can be displaced in the longitudinal direction of the ski 1 relative to the ski base body 2 . As a result, the binding part 4 on the ski 1 can be shifted between a front position and a rear position. In order to enable the displacement of the binding part 4, one or more can be attached to the ski base body 2 on the upper side Rails may be provided which run in the longitudinal direction LR of the ski 1. The binding part 4 can, for example, be guided in this at least one rail in a form-fitting manner.

As in the sectional view of the 2 and 3 As can be seen, the binding part 4 is designed to move the mandrels 6, 6' out of a pushed-back position, as shown in FIG 2 shown, to an advanced position as shown in 3 is shown to bring.

The mandrels 6 , 6 ′ can be slidably guided in sliding sleeves which are introduced into the basic ski body 2 .

The spikes 6, 6' form an anti-slip device, i.e. when the skier pushes off, they are activated and penetrate into the ground, i.e. the ice or snow underneath the ski, in order to prevent the ski 1 from sliding back. During the subsequent pulling of the ski, the mandrels 6, 6' are positioned in the pushed-back position, so that they no longer engage in the snow or the ice.

In order to move the pins 6, 6', the binding part 4 has at least one control surface 5, by means of which the sliding movement of the binding part 4 is converted into a sliding movement of the pins 6. Since two pins 6 are provided in the exemplary embodiment shown, the binding part 4 also has two control surfaces 5, specifically one for each pin 6, 6'.

The control surface 5 can be provided either directly in the binding part 4 or on a functional part that is connected to the binding part 4 . In the exemplary embodiment shown, a functional part 4.1 is inserted into the binding part 4. This functional part 4.1 can, for example, be detachably connected to the binding part in order to be able to remove the functional part 4.1 and thus be able to service the mechanism of the anti-slip device. The functional part 4.1 can be held or secured in the binding part 4, for example, by one or more screws.

We in the 2 and 3 As can be seen, the control surface 5 runs obliquely to the sliding surface 5. As a result, the sliding movement of the binding part 4 can cause the pins 6, 6' to be pushed out. The control surface 5 runs, for example, at an acute angle α obliquely to the sliding surface 3. This angle α opens up to the rear, counter to the running direction LR of the ski 1. The angle α can be between 10° and 60°, for example between 15° and 45°, preferably between 25° and 35°, in particular between 28° and 32°.

The bolts 6, 6′ preferably run at right angles to the control surface 5. The longitudinal axes of the bolts 6, 6′ each enclose an angle β between 30° and 80°, for example between 45° and 75°, preferably between 55° and 65°. in particular between 58° and 62° with the sliding surface 3, the angle β opening up in the running direction LR of the ski 1.

As in 2 and 3 as can be seen, the mandrels 3 are pretensioned by means of a spring 7 into the pushed-in position in which the free ends 6.1, 6.1' of the mandrels 6, 6' do not project beyond the sliding surface 3. The spring force of the spring 6 is preferably also selected in such a way that without the action of external forces, for example forces exerted by the skier on the binding part 4, the binding part 4 is positioned in the advanced position, as shown in FIG 2 is shown. The free ends lying opposite the free ends 6.1, 6.1' rest against the control surfaces of the binding part 4

We now the binding part 4, as in 3 indicated by the arrow, shifted in the longitudinal direction of the ski, the control surfaces 5 are shifted relative to the bolts 6, 6 ', whereby the free ends 6.1, 6.1' of the bolts 6, 6 'are pushed out of the ski body 2, so that the free Ends 6.1, 6.1' project towards the sliding surface 3. The effect of this is that the spikes 6, 6' engage in the snow or ice located below the sliding surface 3 and thereby prevent the ski 1 from sliding back when the skier pushes off.

If no more force is applied to the binding part 4 against the running direction LR or when the ski is being pulled or gliding, the binding part 4 is pushed back into the in 2 brought to the front sliding position shown, as a result of which the mandrels 6, 6' are positioned again into the retracted position by their spring loading.

In the exemplary embodiment shown, the mandrels 6, 6' are arranged in the center or essentially in the center, viewed in the transverse direction of the ski. The mandrels 6, 6' are preferably provided one behind the other in the longitudinal direction of the ski.

It goes without saying that the mandrels 6, 6' can also be provided next to one another in the transverse direction of the ski 1. Furthermore, it goes without saying that the variant shown here with two mandrels 6, 6' is merely an example and only one mandrel 6 or else more than two mandrels 6, 6' can be provided.

A safety mechanism can preferably be provided, by means of which the binding part 4 can be locked in the front sliding position, see above that the anti-slip device is deactivated. The safety mechanism can be coupled to the locking device of the skier's boot, for example, in such a way that locking the boot on the binding part unlocks the anti-slip device (ie the binding part can be moved and the pins can be pushed out of the ski). Conversely, unlocking the boot on the binding part can lock the anti-slip device (ie the binding part can no longer be moved into the second, rear sliding position and the pins can no longer be pushed out of the ski).

The invention has been described above using exemplary embodiments. It goes without saying that numerous changes and modifications are possible without leaving the scope of protection defined by the patent claims.

Reference List

1

ski

2

ski body

3

sliding surface

4

binding part

5

control surface

6, 6'

mandrel

6.1, 6.1'

free end

7

Feather

L.A

longitudinal axis

LR

running direction

a

angle

β

angle

Claims (16)

Ski comprising a basic ski body (2) with a sliding surface (3) and a binding part (4) to which a skier's boot can be attached, the binding part (4) being fixed to the basic ski body (2) so that it can be displaced in the longitudinal direction (LR), At least one control surface (5) is provided on the binding part (4) or on a functional part connected to the binding part (4), which interacts at least indirectly with at least one mandrel (6, 6') displaceably mounted in the basic ski body (2), the Mandrel (6, 6') is positioned in a first, front sliding position of the binding part (4) in a pushed-back position in which the free end (6.1, 6.1') of the mandrel (6, 6') does not protrude over the sliding surface (3 ) protrudes, and the control surface (5) interacts at least indirectly with the mandrel (6, 6') in such a way that when the binding part (4) is displaced relative to the basic ski body (2) from the first, front sliding position to a second, rear sliding position the mandrel (6, 6') is positioned in an advanced position in which the free end (6.1, 6.1') protrudes beyond the sliding surface (3), the control surface (5) being an inclined plane which, when the Binding part (4) is displaced translationally in the longitudinal direction (LR) of the ski base body (2). ski to claim 1 , characterized in that the mandrel (6, 6') is positioned in the retracted position by means of a spring (7). ski to claim 2 , characterized in that the mandrel (6, 6') is directly spring-loaded by a spring (7) acting directly on the mandrel (6, 6'), or that the mandrel (6, 6') is spring-loaded by a spring (7) acting on the binding part (4). Spring and a forced guidance of the mandrel (6, 6 ') in the area of the control surface (5) is indirectly spring-loaded. Ski according to one of the preceding claims, characterized in that the control surface (5) is provided directly on the binding part (4) itself or on a functional part detachably attached to the binding part (4). Ski according to one of the preceding claims, characterized in that the control surface (5) is an inclined plane which encloses an acute angle (α) with the sliding surface (3) of the ski (1) which is opposite to the running direction (LR) of the ski opens. ski to claim 5 , characterized in that the control surface (5) forms an angle (α) with the sliding surface (3) in the range between 10° and 60°, for example between 15° and 60°, preferably between 25° and 35°, in particular between 28° and includes 32°. Ski according to one of the preceding claims, characterized in that the longitudinal axis (LA) of the at least one mandrel (6, 6') runs obliquely to the sliding surface (3) in such a way that the longitudinal axis (LA) of the at least one mandrel (6 , 6') forms an acute angle (β) with the sliding surface (3) of the ski (1), which angle opens in the running direction (LR) of the ski (1). ski to claim 7 , characterized in that the longitudinal axis (LA) of the at least one mandrel (6, 6 ') with the sliding surface (3) an angle (β) in the range between 30 ° and 80 °, for example between 45 ° and 75 °, preferably between 55° and 65°, in particular between 58° and 62°. Ski according to one of the preceding claims, characterized in that at least two mandrels (6, 6') are provided, which are arranged one behind the other as seen in the longitudinal direction (LR). ski to claim 9 , characterized in that the longitudinal axes (LA) of the at least two mandrels (6, 6') run parallel to one another. ski to claim 9 or 10 , characterized in that the mandrels (6, 6 ') are provided centrally or substantially centrally in relation to the transverse direction of the ski. Ski down one of the Claims 1 until 10 , characterized in that at least two mandrels (6, 6 ') seen in the longitudinal direction (LR) of the ski are arranged laterally offset to each other. Ski according to one of the preceding claims, characterized in that the binding part (4) is displaceably guided in a rail fastened to the basic ski body (2). Ski according to one of the preceding claims, characterized in that the binding part (4) is designed to be shifted from a front shifting position to a rear shifting position, which is shifted counter to the running direction (LR), when the skier pushes off. ski to Claim 14 , characterized in that the displacement path of the binding part (4) is less than 5 cm, preferably less than 3 cm. Ski according to one of the preceding claims, characterized in that the ski is a cross-country ski or a touring ski.

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