BINDING SYSTEM FOR A TOURING SKI BINDING

Description

Technical field

[0001] The present invention relates to a binding system for a touring ski binding comprising a toe piece device and a heel piece device for receiving a ski boot. State of the art

[0002] Ski bindings for touring skis are primarily distinguished by their ability to switch between an ascent mode and a descent mode, unlike standard ski bindings. In ascent mode, only the front part of the ski boot is fixed to the ski, allowing the rear part of the boot to be lifted and placed on the ski. The front of the boot rotates around a horizontal axis of a binding bar, perpendicular to the ski's length. In descent mode, both the front and rear of the ski boot are firmly fixed to the ski.

[0003] The downhill performance of a touring ski is generally limited by the need to provide an ascent function. For example, well-known touring binding systems typically have a higher stand height compared to pure downhill binding systems. The components required for the ascent position also require comparatively more material, which can lead to a higher weight for touring bindings.

[0004] Conventional touring binding systems can be broadly divided into two categories: strap bindings and pin bindings. Strap bindings are characterized by the fact that the ski boot is clamped between the toe and heel pieces in both the downhill and uphill positions. The toe and heel pieces are mounted on a strap, with the front part of the strap fixed to the ski in both positions. In the uphill position, the front part of the strap can rotate around an axis running horizontally and perpendicular to the ski's longitudinal axis. The rear end can be fixed to the ski in the downhill position and lifted off the ski in the uphill position. The strap design results in the aforementioned disadvantages of a higher stance height and a comparatively higher weight.

[0005] Pin binding systems can be divided into a toe unit and a heel unit. In the ascent position, the ski boot is only rotatable by the toe unit around a pivot axis running horizontally and perpendicular to the ski's longitudinal axis. Pin systems known from the prior art have the significant disadvantage that the lateral release behavior, in which the ski boot can release laterally from the binding under increased force in downhill mode, is impaired by the pins penetrating the ski boot.

[0006] The US 5,066,036 shows a ski binding system.

[0007] The US 6,467,796 B1 shows a ski binding assembly.

[0008] The US 11,173,381 B2 shows a toe piece for a ski binding.

[0009] EP 0 768 103 A1 shows a shoe binding unit.

[0010] FR 2.172.925 shows a device for attaching a boot to a ski. Description of the invention

[0011] Starting from the known state of the art, it is an object of the present invention to provide an improved binding system for a touring ski binding.

[0012] The problem is solved by a binding system for a touring ski binding with the features of claim 1. Advantageous further developments result from the dependent claims, the description and the figures.

[0013] Accordingly, a binding system for a touring ski binding is proposed, comprising a toe piece device and a heel piece device for receiving a ski boot, wherein the ski boot has a heel part and a forefoot part, wherein at least one bar is arranged in or on the forefoot part, wherein the axis of the bar is perpendicular to the longitudinal axis of the boot, the longitudinal axis of the boot extending from the heel part to the forefoot part, wherein the toe piece device comprises a holding device with a bracket and a locking system, wherein the bracket has a hook-shaped receptacle for receiving the bar of the ski boot, which is oriented opposite to the longitudinal axis of the boot, wherein the bracket at least partially encompasses the bar and thus receives the bar of the ski boot, wherein the locking system is suitable for locking the bar of the ski boot rotatably in the bracket about the axis of the bar.wherein the heel piece device has a lever mechanism suitable for fixing the heel part of the ski boot, wherein in an ascent mode of the touring ski binding the toe piece device is closed and the heel piece device is open, wherein the holder can rotatably lock the heel piece of the ski boot and the locking system can securely prevent the heel piece from being translated against the longitudinal axis of the boot, wherein the heel piece device does not fix the heel part of the ski boot, so that the ski boot can be rotated about the heel piece axis. According to the invention, in a descent mode the toe piece device is open and the heel piece device is closed, so that the holder can receive the heel piece of the ski boot and the lever mechanism of the heel piece device can fix the heel part of the ski boot, wherein the heel piece device with the lever mechanism exerts a contact pressure on the heel part of the ski boot along the longitudinal axis of the boot.so that the bridge is pressed into the holder of the toe piece device, thus securing the ski boot against translation against the longitudinal axis of the boot.

[0014] The touring ski binding can be mounted on a ski, for example using a screw connection. The ski surface normal, which runs perpendicular to the boot's longitudinal axis and orthogonal to the binding's web axis, is perpendicular to the ski surface. Therefore, the relative positions of the various parts of the touring ski binding are described below based on these axes.

[0015] The ski boot has a heel section and a forefoot section. The heel and forefoot sections are positioned on the ski boot according to the anatomy of a human foot. Specifically, the heel and forefoot sections refer to the outermost parts of the ski boot. Accordingly, the longitudinal axis of the boot runs from the heel to the forefoot, thus corresponding to the typical walking direction of a human.

[0016] The ski boot can have a particularly robust edge at the heel (and / or forefoot) that is suitable for transmitting a force, especially a longitudinal holding force, along the boot's longitudinal axis. This edge can also extend away from the heel of the ski boot in the opposite direction to the boot's longitudinal axis, in order to provide both a large surface area for leverage and various surfaces for transverse holding forces, particularly transverse holding forces acting orthogonally to the boot's longitudinal axis and parallel to the ski surface normal.

[0017] At least one rib is arranged in or on the forefoot part of the ski boot. The rib is preferably a cylindrical component whose cylinder axis runs perpendicular to the longitudinal axis of the boot. The cylindrical design of the rib makes it particularly easy to rotate the ski boot within the toe piece. This easy rotation allows the ski to be guided comfortably and with minimal impact on the joints under the foot or boot during the natural walking motion. This results in a more stable gait on varied terrain and thus increased safety.

[0018] However, it is also possible for the bridge to have a different geometric shape. For example, the bridge can have an elliptical cross-section or a partially circular cross-section. The curvature of the bridge is always arranged in such a way that low-friction rotation of the bridge within the toe piece is possible and / or that particularly advantageous force transmission from the bridge to the ski is enabled, for example, when lifting the ski and when skiing. In this context, it can be taken into account that the ski boot does not need to rotate completely around the bridge axis, but rather, due to the natural movement during walking, only a limited angular range needs to exhibit the advantageous properties.

[0019] The toe piece has a finite length, typically less than the width of the forefoot. The toe piece can be fully or partially embedded in the sole of the ski boot, or it can lie entirely outside the sole and be attached to the ski boot, for example, by a reinforced toe piece retaining structure. Translation along the toe piece axis is limited in the toe piece assembly either by the sole or by the toe piece retaining structure of the ski boot. Ideally, the ski boot held in the toe piece assembly should not be able to move translationally along the toe piece axis, for example, it should not be able to shift.

[0020] The hook-shaped mount of the holder can be adapted to the curve or geometric shape of the bridge, thus enabling a positive-locking contact between the bridge and the holder. This allows for a particularly stable and rigid connection between the ski boot and the toe piece, resulting in excellent ski control.

[0021] In particular, the bracket encompasses at least part of the bridge.

[0022] This can mean, in particular, that a hook forming the hook-shaped receptacle is only suitable for providing a transverse holding force and a longitudinal holding force. For example, in the case of a cylindrical shank, the holder only needs to extend from the top of the shank to the front of the shank (viewed along the boot's longitudinal axis in the plane formed by the boot's longitudinal axis and the ski surface normal). This already generates a transverse holding force parallel to the ski surface normal and also a longitudinal holding force along the boot's longitudinal axis. A holding force along the negative ski surface normal is provided by the ski surface itself, so the holder does not need to encompass the lower part of the shank.

[0023] The bridge is therefore received by the holder when the translation of the ski boot along the positive ski surface normal and along the boot's longitudinal axis is prevented.

[0024] The hook-shaped receptacle for holding the ski boot's shank is aligned opposite to the boot's longitudinal axis.

[0025] Regardless of the shape of the cleat, at least translation of the ski boot along its longitudinal axis can be prevented, as the hook acts as a mechanical barrier. Furthermore, translation of the ski boot against the direction of the ski surface normal can be prevented. This can be achieved either through the shape of the cleat or through the locking system.

[0026] Alternatively, the holder with hook-shaped receptacle can also be designed in the form of a hook system with an opening.

[0027] The locking system is positioned in front of the holder on the ski, along the longitudinal axis of the boot. Specifically, the holder prevents the cleat from moving against the boot's longitudinal axis. Together with the holder's secure grip, this prevents any movement of the ski boot perpendicular to the cleat axis. As described above, the system also prevents movement of the ski boot along the cleat axis. However, the ski boot, once held and locked in the holder, can still be rotated around the cleat axis.

[0028] The heel piece device incorporates a lever mechanism designed to secure the heel of the ski boot. For example, the lever mechanism can exert a longitudinal holding force on the ski boot, pressing it along its longitudinal axis into the toe piece device. A transverse holding force that presses the heel of the ski boot towards the ski surface is also advantageous.

[0029] A lever mechanism can mean that the mechanism comprises at least two components that are movably attached to each other and can be moved relative to each other to exert a holding force on the ski boot. In particular, a movable attachment can mean that the components of the lever mechanism can be rotated and / or shifted.

[0030] The binding system for a touring ski binding has two modes: an ascent mode and a descent mode. The ascent mode is suitable for walking or climbing with the ski attached to the ski boot, particularly for ascending a mountain or slope. The descent mode, on the other hand, is designed for attaching the ski to the ski boot, thus enabling a safe descent with a high degree of ski control.

[0031] In ascent mode, the toe piece is closed and the heel piece is open. A closed toe piece means that it can lock the heel piece in a rotatable position, with the locking system preventing the heel piece from moving against the boot's longitudinal axis, as described above. Additionally, in ascent mode, the heel piece is open. This means the heel piece does not fix or hold the heel of the ski boot, thus allowing the ski boot to rotate around the heel piece axis.

[0032] In downhill mode, the toe piece is open and the heel piece is closed. An open toe piece means that only the holder can accommodate the ski boot's heel piece, but the locking mechanism does not allow the heel piece to rotate. An open toe piece therefore allows the heel piece to be inserted into or removed from the holder. This makes it possible, especially in the event of a fall in downhill mode, to release the boot from the binding, particularly from the toe piece.

[0033] To securely hold the ski boot in downhill mode, the lever mechanism of the heel piece locks the heel of the boot. The heel piece, with its lever mechanism, exerts a clamping force on the heel of the boot along the longitudinal axis of the boot, as described above. This clamping force presses the heel piece into the holder of the toe piece. In downhill mode, this holder secures the heel piece against translation along the longitudinal axis of the boot and along the ski surface normal. Simultaneously, the lever mechanism secures the heel piece against translation against the longitudinal axis of the boot by pressing the heel piece in the direction of the longitudinal axis. Therefore, in downhill mode, the ski boot is not rotatable but fixed in its position relative to the ski.

[0034] Thus, the binding system for a touring ski binding offers the advantage that, in an ascent mode, the ski boot has a mobility similar to that of a cross-country ski boot. Simultaneously, in a descent mode, high stability and safety are ensured, as the ski boot is held firmly in the touring binding. At the same time, the binding allows the ski boot to be released from the open toe piece in descent mode, thereby preventing or reducing injuries in the event of a fall.

[0035] In a preferred embodiment, the locking system and the bracket are displaced relative to each other during locking. Both the locking system and the bracket can be displaced. Alternatively, only the locking system or the bracket can be displaced. In particular, a relative displacement means that the locking system and the bracket are not rotated relative to each other. Advantageously, the locking system and the bracket are displaced relative to each other along the longitudinal axis of the boot, particularly parallel to the plane of the ski surface.

[0036] This allows the bracket and the locking system to be moved relative to each other, enabling a rotatable locking of the bridge between the locking system and the bracket.

[0037] In a preferred further training method, the locking system is permanently attached to the ski and the bracket is movable.

[0038] This only allows the bracket to be moved in the aforementioned manner. In particular, the bracket can be moved towards or away from the locking system.

[0039] For example, in a closed mode of the toe piece device, the bracket is positioned flush against the locking system, while in an open mode it is positioned away from the locking system. In particular, this results in a spatial separation of the two bracket types in downhill and uphill modes. This allows for a particularly simple binding system design.

[0040] In a further preferred embodiment, the front jaw device further comprises a front jaw lever mechanism, wherein the holder is movable by means of the front jaw lever mechanism.

[0041] As described above, a toe-jaw lever mechanism can exert a force along or against the longitudinal axis of the shoe by rotating components of the mechanism around their mounting points. In particular, the toe-jaw lever mechanism thus redirects the (rotational) forces acting on the lever into a transverse force, preferably a transverse holding force.

[0042] A front jaw lever mechanism allows the holder to be moved towards the locking system by actuating a lever. For example, the lever of the front jaw lever mechanism can have two positions, so that a closed and an open state of the front jaw device can be achieved.

[0043] In a further preferred embodiment, the front jaw device further comprises a front jaw spring mechanism, wherein the holder is displaceable by means of the front jaw spring mechanism.

[0044] The bracket can also be moved by a front jaw spring mechanism. In particular, the front jaw assembly can be pre-tensioned by the front jaw spring mechanism. A spring can be positioned between the locking system and the bracket, allowing the spring to push the bracket and locking system away from each other. However, it is also possible for the spring to push the bracket and locking system towards each other.

[0045] For example, a lever position of the toe piece lever mechanism can bring the toe piece into a closed position. This toe piece lever mechanism can then be used, for instance, as a safety release mechanism, since the spring is pre-tensioned by the closed position of the toe piece. In this example, the spring would push the locking system and the retainer away from each other. Finally, if a force acts on the toe piece, such as during a fall, the retainer can be pushed away from the locking system by the toe piece spring mechanism, allowing the bar and ski boot to release from the toe piece. This allows for a safety release, particularly in ascent mode.

[0046] Alternatively, the spring can be positioned so that the holder and the locking system are moved relative to each other. In this case, the spring is under tension when the lever position of the toe piece lever mechanism is in the closed position. This allows the spring to act as a safety release in both downhill and uphill modes. If a force in the direction of the boot's longitudinal axis exceeds a predefined threshold, such as during a fall, the holder is pushed away from the locking system, and the toe piece and ski boot can be released from the toe piece assembly.

[0047] In a further preferred embodiment, the locking system has a stop, wherein in ascent mode the holder is pressed against the stop by means of the front jaw spring mechanism.

[0048] This allows the bracket and locking system to be set to a predefined distance, so that the bracket can lock the bridge in a rotatable manner.

[0049] In a further preferred embodiment, the holder is U-shaped or L-shaped. This has the advantage that the parallel sides of the U-shaped holder secure the ski boot's shank against translation along or against the ski surface normal. Furthermore, the curvature of the U-shaped holder allows rotation of a round shank when it is held within the U-shaped holder. The U-shaped design of the holder is particularly advantageous for use with a hook system. The alternative design with an L-shaped holder allows rotation of the ski boot's shank in uphill mode, while in both uphill and downhill modes the shank remains secured against translational movement along or against the ski surface normal. An L-shaped holder is also advantageous with regard to manufacturing.

[0050] In a preferred embodiment, the locking system comprises a locking plate configured to at least partially cover the hook-shaped receptacle of the bracket. This allows the locking mechanism, or the element that locks the bridge and restricts its translational degrees of freedom, to be mounted separately from the locking system and its underlying mechanics.

[0051] In particular, a locking plate can be cuboid in shape, allowing the U-shaped bracket to be fully enclosed. Alternatively, the locking plate can itself have a pronounced curve opposite the longitudinal axis of the shoe, so that the shank is positively engaged and rotatably locked by the locking plate and the bracket. An L-shaped locking plate is advantageous when using an L-shaped bracket, as it provides a force-fit connection for the shank within the hook-shaped receptacle and allows it to rotate. This positive-fit design enables better power transmission during ascent.

[0052] According to another embodiment, the shank of the ski boot is offset along or against the longitudinal axis of the boot in ascent mode compared to descent mode. This can be achieved, in particular, by positioning the retainer behind the locking system in the direction of the boot's longitudinal axis when the toe piece device is in the open position.

[0053] The different positions of the ski boot relative to the ski allow for better balance in downhill and uphill modes, thus reducing the risk of injury and increasing the enjoyment of skiing and climbing.

[0054] In a preferred embodiment, the heel piece mechanism has a safety release in downhill mode. This safety release allows, for example, the heel piece mechanism to be released when a predefined force is exceeded, i.e., it switches the heel piece mechanism from a closed to an open state. This allows the ski boot to release from the heel piece mechanism in downhill mode, thus minimizing the risk of injury in the event of a fall. Brief description of the characters

[0055] Preferred further embodiments of the invention are explained in more detail by the following description of the figures. These show: Figure 1: Schematic overview of the binding system for a touring ski binding; Figures 2A-2E: Different possible arrangements of the toe clip on the ski boot; Figures 3A-3E: Schematic detail view of the toe piece device; Figures 4A-4D: Schematic detail view of alternative toe piece devices; Figures 5A-5C: Schematic representation of the downhill mode; and Figures 6A-6C: Schematic representations of the uphill mode. Detailed description of preferred embodiments

[0056] Preferred embodiments are described below with reference to the figures. Identical, similar, or equivalent elements in the different figures are designated with identical reference numerals, and repeated descriptions of these elements are sometimes omitted to avoid redundancy.

[0057] In Figure 1Figure 1 shows an overview of the binding system 1 for a touring ski binding. The binding system comprises a toe piece 2 and a heel piece 3 for holding a ski boot 4.

[0058] The binding system 1 is mounted on a ski 10, for example by means of a screw connection. The surface of the ski on which the binding system is mounted has a surface normal, which is called the ski surface normal Z.

[0059] The ski boot 4 has a heel section 40 and a forefoot section 42. The longitudinal axis X of the boot extends from the heel section 40 to the forefoot section 42. The ski boot 4 also has a rib 44 in the forefoot section 42. The rib 44 is preferably cylindrical and extends, in particular with its circular cross-section, perpendicular to the plane formed by the ski surface normal Z and the longitudinal axis X of the boot. Accordingly, the axis of symmetry of the rib 44 is the rib axis Y, which extends into the plane of the ski surface.

[0060] In the present example, the bridge 44 is arranged such that it lies completely beneath the sole of the ski boot 4. However, the bridge 44 can also be arranged in other positions on the forefoot part 42, as shown in the Figures 2A-2E shown.

[0061] For example, in Figure 2A shown that the bridge 44 is located entirely below the sole. In Figure 2BIt has been shown that the bridge 44 is partially located below the base. In Figure 2C It has been shown that the bridge 44 is fully integrated into the sole. In 2D Figure Figure 42 shows that the bridge is partially integrated into the front end of the forefoot section. Alternatively, the bridge can also be fully integrated into the front end of the forefoot section (not shown). Figure 2E It is also shown that the bridge is positioned in front of the front end of the forefoot section 42. Depending on the design, particularly ergonomic skiing and climbing characteristics of the binding system can be achieved.

[0062] The front jaw assembly 2 of the Figure 1 further comprises a holding device 20, which includes a bracket 21 and a locking system 27, and which is shown in greater detail in the Figures 3A-4D is shown.

[0063] The holder 21 of the toe piece device 2 has a hook-shaped receptacle 22, which is formed as a hook system 23 with an opening 24, the opening 24 pointing opposite to the longitudinal axis X of the boot. In particular, the opening 24 of the hook system 23 can partially encompass the bar 44 of the ski boot 4, and thus the hook system 23 can receive the bar 44 of the ski boot 4. The opening 24 is U-shaped, so that a secure hold of the bar 44 in the hook system 23 is ensured.

[0064] Furthermore, the toe piece device 2 has a locking system 202 with which the bar 44 of the ski boot 4 can be rotatably locked in the hook system 23. In particular, a rotatable locking means that translation of the bar 44 is to be prevented. The hook system 23 can, for example, prevent translation in the direction of the boot's longitudinal axis X and in the direction of the ski surface normal Z. Simultaneously, translation against the ski surface normal Z can be prevented by the ski 10 itself or by the hook system 23. The locking system 27 can prevent translation of the bar 44 against the direction of the boot's longitudinal axis X. The translational degrees of freedom in and against the bar axis Y are realized by the bar 44 itself and its attachment in or to the sole. Accordingly, the bar 44 retains only one rotational degree of freedom about the bar axis Y.

[0065] For example, by making the bridge 44 round, or at least rounded, or partially rounded, the rotational degree of freedom is not restricted by the hook system 23, but rather granted.

[0066] The locking mechanism of the locking system 27 is characterized by the fact that the hook system 23 is displaced relative to the locking system 27. In Fig. 3A The length Δx of the relative displacement along the shoe's longitudinal axis X is shown.

[0067] Furthermore, the locking system 27 comprises a locking plate 28, which is arranged between the locking system 27 and the hook system 23. The locking plate 28 can enable a particularly advantageous rotatable locking action, for example, if a particularly stable locking action or a particularly low-friction locking action is enabled. In particular, the locking plate 28 can also be formed integrally with the locking system 27 ( Figures 4A to 4D) or have a curvature corresponding to the bridge 44, so that the bridge 44 can be held in a form-fitting manner by the hook system 23 and the locking system 27 (not shown).

[0068] In the Figures 3C and 3D Further embodiments of the front jaw device 2 are shown. In particular, the locking system 27 is fixedly attached to the ski 10, while the hook system 27 can be moved. Specifically, a front jaw lever mechanism 29 and a front jaw spring mechanism 26 are shown, by means of which the hook system 23 can be moved.

[0069] In Figure 3CThe front jaw assembly 2 is open, and the hook system 23 and the locking system 27 are pushed apart by the front jaw spring mechanism 26. By actuating the front jaw lever mechanism 29, however, a force can be generated against the spring force of the front jaw spring mechanism 26, so that the hook system 23 can be moved towards the locking system 27. The closed state of the front jaw assembly 2 is in 3D figure shown.

[0070] In the event of a fall, for example, the toe piece lever mechanism 29 can be released and quickly opened by the toe piece spring mechanism 26. This means that the bar 44 is no longer held in the hook system 23, allowing the ski boot 4 to release from the binding system 1 for a touring ski binding, thus preventing injury to the skier. Accordingly, such a mechanism can be used to implement a safety release in the ascent mode of the binding system 1 for a touring ski binding.

[0071] Figure 3EFigure 1 shows an alternative embodiment of a toe jaw device 2, wherein an L-shaped bracket 21 has a hook-shaped receptacle 22 for receiving a bar 44, partially encompassing and thus receiving it. An L-shaped locking plate 27 of a locking system 27 is suitable for locking the bar 44 rotatably in the bracket 21 about the bar axis Y. When the lever position of a toe jaw lever mechanism 29 is in a closed state, a spring of a toe jaw spring mechanism 26 presses the bracket 21 against a stop 25 of the locking system 27, so that the bar 44 is rotatably locked in the bracket 21 of the toe jaw spring mechanism 26 and is secured by the locking system 27 against translation opposite to the longitudinal axis X of the shoe.

[0072] In the Figures 4A and 4B Figure 2 shows a detailed view of an alternative embodiment of a front jaw device 2. Figure 4AA front jaw assembly 2 in ascent mode is shown. The lever position of the front jaw lever mechanism 29 is in a closed state, so that the bracket 21 is pressed against a stop 25 by means of the spring of the front jaw spring mechanism 26. The L-shaped bracket 21 and the L-shaped locking plate 28 of the locking system 27 can thus rotatably lock the bar. In descent mode, which is in Figure 4BAs shown, the bracket 21 is moved along the longitudinal axis X of the shoe via the toe piece spring mechanism 26 and the toe piece lever mechanism 29. The bracket 21, with its hook-shaped receptacle 22, can secure the bar 44 against translation along the shoe axis X by the force Fx, pressing the bar 44 into the bracket 21. The spring is in its uncompressed state, but when a predefined force is applied in the direction of the shoe's longitudinal axis X, a safety mechanism moves the bracket 21 into a position that allows it to release the bar 44.

[0073] In the Figures 4C and 4D A detailed view of another alternative embodiment of the front jaw device 2 is shown. Figure 4CIn this case, the toe jaw device 2 is in ascending mode, with the toe jaw lever mechanism 29 displacing the U-shaped hook system 23 opposite the longitudinal axis X of the shoe towards the locking plate 28 of the stationary locking system 27, such that the opening 24 is at least partially covered by the locking plate 28 and thus the hook system 23 can rotatably lock the bar, whereby the locking plate 28 can secure the bar 44 against translation opposite the longitudinal axis X of the shoe. Correspondingly, the holder 21 is displaced by the toe jaw lever mechanism 26 along the longitudinal axis X of the shoe, so that the hook system 23 contacts the spring jaw spring mechanism 26. The hook system 23 can then secure the bar 44 against translation along the shoe axis X by the force Fx, by pressing the bar 44 into the hook system 23.The spring is in an untensioned state, whereby, when a predefined force is applied in the direction of the shoe's longitudinal axis X, a safety mechanism moves the hook system 23 into a position so that the hook system 23 can release the bridge 44.

[0074] The detailed workings of the in Figure 1 The lever mechanism 30 shown is in the Figures 5A and 5BThe lever mechanism 30 is suitable for fixing the heel part 40 of the ski boot 4. The lever mechanism 30 comprises a base 32 to which a lever 34 is rotatably attached, i.e., can be pivoted around the base 32. A clamping block 36 is rotatably attached to the lever 34, which has a clamping nose 37 at one end and a clamping hook 38 at the other end. If the heel part 40 of the ski boot 4 is to be fixed to the heel piece device 3, the lever 34 is first pivoted clockwise around the base 32 (in the present illustration). Subsequently, the clamping block 36 is pivoted around the lever 33. This causes the clamping nose 37 to contact the heel part 40 of the ski boot 4.

[0075] By further pivoting the clamping block 36, a force is exerted on the heel part 40 of the ski boot 4. Once the clamping block 36 has been pivoted by a certain angle, the clamping hook 38 can be guided over the lever 34 and fixed or hooked in place. This results in a constant force being exerted by the clamping nose 37 on the heel part 40 of the ski boot 4, thus securing the ski boot 4.

[0076] The acting force typically comprises two components: a force Fx in the direction of the shoe's longitudinal axis X, and a force Fz in the opposite direction to the ski surface normal Z, as shown in Figure 5BThe force Fx presses the ski boot 4, or rather its heel piece 44, into the hook system 23, thus fixing the ski boot 4 in the direction of the boot's longitudinal axis X. The force Fz pushes the ski boot 4, or rather the heel piece 40, towards the ski 10, so that the heel piece 40 cannot be lifted off the ski 1.

[0077] In particular, in the Figure 5B The downhill mode is shown. In downhill mode, the toe piece device 2 is open and the heel piece device 3 is closed. The bar 44 of the ski boot 4 is engaged in the hook system 23 of the toe piece device 2, and the heel part 40 of the ski boot 4 is secured by the lever mechanism 30 of the heel piece device 3.

[0078] In particular, the pressure exerted by the lever mechanism 30 acts on the heel part 40 of the ski boot, so that a force acts along the longitudinal axis X of the boot and the bridge 44 is pressed into the hook system 23 of the toe piece device 2. The ski boot 4 is thus secured against translation against the longitudinal axis X of the boot by the lever mechanism 30.

[0079] To reduce the risk of injury in the event of a fall, the buttock device 3 can have a safety release 306, as shown in the Figures 5A to 5C shown. This allows the lever mechanism 30 to open, for example, under a predefined force, so that the heel part 40 of the ski boot can be removed from the heel piece device 3.

[0080] In the Figure 5C is an embodiment according to the one described in the Figures 5B as shown, wherein the front baking device 2 of the in Figure 3EThe force Fx in the direction of the shoe's longitudinal axis X presses the bridge 44 into the holder 21 and secures it against translation in the opposite direction of the shoe's longitudinal axis X. The spring of the toe spring mechanism 26 provides resistance against displacement of the holder 21 in the direction of the shoe's longitudinal axis X and incorporates a safety mechanism. If the force Fx in the direction of the shoe's longitudinal axis X exceeds a predefined value, the holder 21 and the bridge 44 shift along the shoe's longitudinal axis X to such an extent that the bridge 44 can release from the holder 21.

[0081] In the Figures 6A and 6BThe climbing mode of binding system 1 for a touring ski binding is shown. In climbing mode, the heel piece 3 is open and the toe piece 2 is closed. The bar 44 of the ski boot 4 is rotatably locked by the hook system 23 of the toe piece 2 and secured against translation against the longitudinal axis X of the boot by the locking system 27. The heel piece 40 of the ski boot 4 is not fixed in the open position of the heel piece 3, so that the ski boot 4 can rotate about the bar axis Y. This is particularly noticeable when comparing the Figures 6A and 6B shown.

[0082] Furthermore, in the Figure 6C an embodiment according to the one described in the Figures 6B as shown, wherein the front baking device of the in Figure 3EThe spring of the front jaw spring mechanism 26 presses the bracket 21 against the stop 25 of the locking system 27, so that the bracket 21 can lock the web 44 rotated about the web axis Y.

[0083] It is particularly evident from a comparison of the descent and ascent modes of the Figures 5A and 6A It is evident that the bridge 44 of the ski boot 4 is offset along the longitudinal axis X of the boot. Thus, a spatial separation of the ski binding types can be achieved by means of the movable bracket 21.

[0084] Where applicable, all individual features shown in the exemplary embodiments can be combined and / or exchanged without leaving the scope of the invention. Reference symbol list

[0085] 1 binding system 10 skis 2 Front jaw device 20 Holding device 21 Holder 22 Hook-shaped receptacle 23 Hook system 24 Opening 25 Stop 26 Front jaw spring mechanism 27 Locking system 28 Locking plate 29 Front jaw lever mechanism 3 Rear jaw device 30 Lever mechanism 32 Base 34 Lever 36 Clamping block 37 Clamping nose 38 Clamping hook 30 6 Safety release 4 Ski boot 40 Heel part 42 Forefoot part 44 Bridge X-Shoe longitudinal axis Y-Stem axis Z-Ski surface normal

Claims

1. Binding system (1) for a touring ski binding, comprising a front jaw device (2) and a rear jaw device (3) for receiving a ski boot (4), wherein the ski boot (4) has a heel part (40) and a front foot part (42), wherein at least one web (44) is arranged in or on the front foot part, wherein the web axis (Y) of the web (44) runs perpendicular to the boot longitudinal axis (X), wherein the boot longitudinal axis (X) extends from the heel part (40) to the front foot part (42), wherein the front jaw device (2) comprises a holding device (20) with a retainer (21) and a locking system (27), wherein the retainer (21) has a hook-shaped receptacle (22) for receiving the web (44) of the ski boot (4), which is aligned opposite the boot longitudinal axis (X), wherein the retainer (21) at least partially surrounds the web (44) and thus receives the web (44) of the ski boot (4), wherein the locking system (27) is suitable for locking the web (44) of the ski boot (4) in the retainer (21) rotatable about the web axis (Y), wherein the rear jaw device (3) has a lever mechanism (30) which is suitable for fixing the heel part (40) of the ski boot (4), wherein in an ascent mode of the touring ski binding, the front jaw device (2) is closed and the rear jaw device (3) is open, wherein the retainer (21) can lock the web (44) of the ski boot (4) rotatable and the locking system (27) can secure the web (44) against translation against the boot longitudinal axis (X), wherein the rear jaw device does not fix the heel part (40) of the ski boot (4), so that the ski boot (4) can be rotated about the web axis (Y), characterized in that in a descent mode, the front jaw device (2) is open and the rear jaw device (3) is closed, so that the retainer can receive the web (44) of the ski boot (4), and the lever mechanism (30) of the rear jaw device (3) can fix the heel part (40) of the ski boot (4), wherein the rear jaw device (3) with the lever mechanism (30) exerts a contact pressure on the heel part (40) of the ski boot (4) along the boot longitudinal axis (X), so that the web (44) is pressed into the retainer (21) of the front jaw device (2), and the ski boot (4) is thus secured against translation against the boot longitudinal axis (X).

2. Binding system (1) according to claim 1, characterized in that the locking system (202) and the retainer (21) are displaced relative to each other during locking.

3. Binding system (1) according to claim 1 or 2, characterized in that the locking system (27) is stationary attached to the ski (10) and the retainer (21) is displaceable.

4. Binding system (1) according to claim 3, characterized in that the front jaw device (2) further comprises a front jaw lever mechanism (29), wherein the retainer (21) is displaceable by means of the front jaw lever mechanism (29).

5. Binding system (1) according to claim 4, characterized in that the front jaw device (2) further comprises a front jaw spring mechanism (26), wherein the retainer (21) is displaceable by means of the front jaw spring mechanism (26).

6. Binding system (1) according to claim 5, characterized in that the locking system (27) has a stop (25), wherein in ascent mode the retainer (21) is pressed against the stop (25) by means of the front jaw spring mechanism (26).

7. Binding system (1) according to one of the preceding claims, characterized in that the retainer (21) is U-shaped or L-shaped.

8. Binding system (1) according to one of the previous claims, characterized in that the locking system (27) comprises a locking plate (28) configured to at least partially cover the hook-shaped receptacle (22) of the retainer (21).

9. Binding system (1) according to one of the preceding claims, characterized in that in ascent mode the web (44) of the ski boot (4) is offset along or against the boot longitudinal axis (X) compared to the descent mode.

10. Binding system (1) according to one of the preceding claims, characterized in that the rear jaw device (3) has a safety release (306) in descent mode.