Binding System for a Touring Ski Binding

Abstract

A binding system for a touring ski binding has a front jaw device and a rear jaw device for receiving a ski boot. In a descent mode, the front jaw device is open and the rear jaw device is closed, so that a retainer can receive a web of the ski boot, and a lever mechanism can fix a heel part of the ski boot. The rear jaw device with the lever mechanism exerts a contact pressure on the heel part of the ski boot along a boot longitudinal axis (X), so that the web is pressed into a hook system of the front jaw device, and the ski boot is thus secured against translation against the boot longitudinal axis (X).

Claims

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

2. Binding system according to claim 1, wherein the locking system and the retainer are displaced relative to each other during locking.

3. Binding system of claim 1, wherein the locking system and the is stationarily attached to the ski and the retainer is displaceable.

4. Binding system of claim 3, wherein the front jaw device further comprises a front jaw lever mechanism, and wherein the retainer is displaceable by means of the front jaw lever mechanism.

5. Binding system of claim 4, wherein the front jaw device further comprises a front jaw spring mechanism, and wherein the retainer is displaceable by means of the front jaw spring mechanism.

6. Binding system of claim 5, wherein the locking system has a stop, and wherein in ascent mode the retainer is pressed against the stop by means of the front jaw spring mechanism.

7. Binding system of claim 1 wherein the retainer is U-shaped or L-shaped.

8. Binding system of claim 1 wherein the locking system comprises a locking plate configured to at least partially cover the hook-shaped receptacle of the retainer.

9. Binding system of claim 1 wherein in ascent mode the web of the ski boot is offset along or against the boot longitudinal axis (X) compared to the descent mode.

10. Binding system of claim 1 wherein the rear jaw device comprises a safety release in descent mode.

11. Binding system of claim 2, wherein the locking system is stationarily attached to the ski and the retainer is displaceable.

12. Binding system of claim 11, wherein the front jaw device further comprises a front jaw lever mechanism, and wherein the retainer is displaceable by means of the front jaw lever mechanism.

13. Binding system of claim 12, wherein the front jaw device further comprises a front jaw spring mechanism, and wherein the retainer is displaceable by means of the front jaw spring mechanism.

14. Binding system according to claim 13, wherein the locking system has a stop, and wherein in ascent mode the retainer is pressed against the stop by means of the front jaw spring mechanism.

15. Binding system of claim 2 wherein the retainer is U-shaped or L-shaped.

16. Binding system of claim 2 wherein the locking system comprises a locking plate configured to at least partially cover the hook-shaped receptacle of the retainer.

17. Binding system of claim 2 wherein in ascent mode the web of the ski boot is offset along or against the boot longitudinal axis (X) compared to the descent mode.

18. Binding system of claim 2 wherein the rear jaw device comprises a safety release in descent mode.

19. Binding system of claim 3 wherein the locking system comprises a locking plate configured to at least partially cover the hook-shaped receptacle of the retainer.

20. Binding system of claim 3 wherein in ascent mode the web of the ski boot is offset along or against the boot longitudinal axis (X) compared to the descent mode.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0049] Embodiments of the disclosure are explained in more detail in the following description of the figures. They show:

[0050] FIG. 1 schematic overview of the binding system for a touring ski binding;

[0051] FIGS. 2A-2E various possible arrangements of the web on the ski boot;

[0052] FIGS. 3A-3E schematic detailed view of the front jaw device;

[0053] FIGS. 4A-4D schematic detailed view of alternative front jaw devices;

[0054] FIGS. 5A-5C schematic representation of the departure mode; and

[0055] FIGS. 6A-6C schematic representations of the ascent mode.

DETAILED DESCRIPTION

[0056] In the following, embodiments are described with reference to the figures. Here, identical, similar, or similarly acting elements in the different figures are provided with identical reference signs, and a repeated description of these elements is partially dispensed with in order to avoid redundancies.

[0057] FIG. 1 shows an overview of the binding system 1 for a touring ski binding. The binding system comprises a front jaw device 2 and a rear jaw device 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 front foot part 42. The so-called boot longitudinal axis X extends from the heel part 40 to the front foot part 42. The ski boot 4 also has a web 44 in the front foot part 42. The web 44 is preferably cylindrical in shape and extends in particular with the circular cross-section perpendicular to the plane formed by the ski surface normal Z and the boot longitudinal axis X. Accordingly, the axis of symmetry of the web 44 is the so-called web axis Y, which extends into the blade plane.

[0060] In the present example, the web 44 is arranged so that it is entirely below the sole of the ski boot 4. However, the web 44 can also be arranged at other positions of the front foot part 42, as shown in FIGS. 2A-2E.

[0061] For example, FIG. 2A shows that the web 44 is arranged completely below the sole. FIG. 2B shows that the web 44 is partially arranged below the sole. FIG. 2C shows that the web 44 is completely integrated into the sole. FIG. 2D shows that the web is partially integrated into the front end of the front foot part 42. Alternatively, the web can also be fully integrated into the front end of the front foot part (not shown). FIG. 2E also shows that the web is arranged in front of the front end of the front foot part 42. Depending on the configuration, particularly ergonomic riding and climbing properties of the binding system can be achieved.

[0062] The front jaw device 2 of FIG. 1 further comprises a holding device 20, which comprises a retainer 21 and a locking system 27, and which is shown in a higher level of detail in FIGS. 3A-4D.

[0063] The retainer 21 of the front jaw device 2 has a hook-shaped receptacle 22, which is shaped in the form of a hook system 23 with an opening 24, wherein the opening 24 points against the longitudinal axis X of the boot. In particular, the opening 24 of the hook system 23 can partially encompass the web 44 of the ski boot 4 and thus, the hook system 23 can accommodate the web 44 of the ski boot 4. The opening 24 is U-shaped in this case, so that a secure hold of the web 44 in the hook system 23 is ensured.

[0064] Furthermore, the front jaw device 2 has a locking system 202 with which the web 44 of the ski boot 4 can be rotatable locked in the hook system 23. In particular, a rotatable locking means that a translation of the web 44 is to be prevented. The hook system 23 can, for example, prevent translation in the direction of the boot longitudinal axis X and in the direction of the ski surface normal Z. At the same time, 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 the web 44 from translating against the direction of the boot longitudinal axis X. The translational degrees of freedom in and against the web axis Y are realized by the web 44 itself and its attachment in or on the sole. Accordingly, only one rotational degree of freedom around the web axis Y remains for the web 44.

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

[0066] The locking of the locking system 27 is characterized by the fact that the hook system 23 is displaced relative to the locking system 27. FIG. 3A shows the length Ax of the relative displacement along the longitudinal axis X of the shoe.

[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 mechanism if, for example, a particularly stable locking mechanism is enabled or a particularly low-friction locking mechanism is enabled. In particular, the locking plate 28 can also be formed in one piece with the locking system 27 (FIGS. 4A to 4D) or have a rounding corresponding to the web 44, so that the web 44 can be held in a form-fitting manner by the hook system 23 and the locking system 27 (not shown).

[0068] FIGS. 3C and 3D show further embodiments of the front jaw device 2. In particular, the locking system 27 is fixed to the ski 10, while the hook system 27 can be moved. In particular, a front jaw lever mechanism 29 and a front jaw spring mechanism 26 are shown, with the aid of which the hook system 23 can be displaced.

[0069] In FIG. 3C, the front jaw device 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, on the other hand, a force can be built up 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 device 2 is shown in FIG. 3D.

[0070] In the event of a fall, for example, the front jaw lever mechanism 29 can be released and quickly opened by the front jaw spring mechanism 26. As a result, the web 44 is no longer held in the hook system 23, whereby the ski boot 4 can be released from the binding system 1 for a touring ski binding, so that injuries to the ski can be avoided. Accordingly, a safety release in an ascent mode of the binding system 1 for a touring ski binding can be realized by such a mechanism.

[0071] FIG. 3E shows an alternative embodiment of a front jaw device 2, wherein an L-shaped retainer 21 has a hook-shaped receptacle 22 for receiving a web 44, partially encloses it and thus, receives it. A likewise L-shaped locking plate 27 of a locking system 27 is suitable for locking the web 44 in the retainer 21 so that it can rotate about the web axis Y. If the lever position of a front jaw lever mechanism 29 is in a closed state, a spring of a front jaw spring mechanism 26 presses the retainer 21 against a stop 25 of the locking system 27, so that the web 44 is rotatable locked in the retainer 21 of the front jaw spring mechanism 26 and is secured by the locking system 27 against translation against the longitudinal axis X of the shoe.

[0072] FIGS. 4A and 4B show a detailed view of an alternative embodiment of a front jaw device 2. FIG. 4A shows a front jaw device 2 in the ascent mode. Here, the lever position of the front jaw lever mechanism 29 is in a closed state, so that the retainer 21 is pressed against a stop 25 by means of the spring of the front jaw spring mechanism 26. The L-shaped retainer 21 and the L-shaped locking plate 28 of the locking system 27 can thus lock the web in a rotatable manner. In descent mode, which is shown in FIG. 4B, the retainer 21 is moved along the longitudinal axis X of the shoe via the front jaw spring mechanism 26 and the front jaw lever mechanism 29. The retainer 21 with the hook-shaped receptacle 22 can secure the web 44 against translation along the shoe axis X by the force Fx by pressing the web 44 into the retainer 21. The spring is in the un-tensioned state, whereby it brings the retainer 21 into a position via a safety mechanism at a predefined force in the direction of the longitudinal shoe axis X, so that the retainer 21 can release the web 44.

[0073] FIGS. 4C and 4D show a detailed view of a further alternative embodiment of the front jaw device 2. In FIG. 4C, the front jaw device 2 is in the ascent mode, wherein the front jaw lever mechanism 29 displaces the U-shaped hook system 23 against the shoe longitudinal axis X in the direction of the locking plate 28 of the stationary locking system 27 to such an extent that the opening 24 is at least partially covered by the locking plate 28 and thus the hook system 23 can lock the web in a rotatable manner, wherein the locking plate 28 can secure the web 44 against translation against the shoe longitudinal axis X. Accordingly, the retainer 21 is displaced along the longitudinal axis X of the shoe by the front jaw lever mechanism 26, so that the hook system 23 contacts the spring jaw spring mechanism 26. The hook system 23 can secure the web 44 against translation along the shoe axis X by the force Fx by pressing the web 44 into the hook system 23. The spring is in the untensioned state, whereby it brings the hook system 23 into a position via a safety mechanism at a predefined force in the direction of the longitudinal shoe axis X, so that the hook system 23 can release the web 44.

[0074] The detailed operation of the lever mechanism 30 shown in FIG. 1 is shown in FIGS. 5A and 5B. The 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 rotatable attached, i.e. can be pivoted about the base 32. A clamping block 36 is rotatable attached to the lever 34, which has a clamping lug 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 with the rear jaw device 3, the lever 34 is first pivoted clockwise about the base 32 (in the present illustration). The clamping block 36 is then pivoted around the lever 34. This causes the clamping lug 37 to contact the heel part 40 of the ski boot 4.

[0075] Further pivoting of the clamping block 36 exerts a force on the heel part 40 of the ski boot 4. As soon as the clamping block 36 has been pivoted by a certain angular amount, the clamping hook 38 can be guided over the lever 34 and fixed or hooked in there. This permanently exerts a force through the clamping lug 37 on the heel part 40 of the ski boot 4, which fixes the ski boot 4 in place.

[0076] The acting force typically comprises two components, namely a force Fx in the direction of the boot's longitudinal axis X and a force Fz in the opposite direction to the ski surface normal Z, as shown in FIG. 5B. The force Fx presses the ski boot 4 or its web 44 into the hook system 23, so that the ski boot 4 is fixed in the direction of the longitudinal boot axis X. The force Fz presses the ski boot 4 or the heel part 40 in the direction of the ski 10 so that the heel part 40 cannot be lifted off the ski 1.

[0077] In particular, the descent mode is shown in FIG. 5B. In descent mode, the front jaw device 2 is open and the rear jaw device 3 is closed. In this case, the web 44 of the ski boot 4 is held in the hook system 23 of the front jaw device 2 and the heel part 40 of the ski boot 4 is fixed by the lever mechanism 30 of the rear jaw device 3.

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

[0079] In order to reduce the risk of injury in the event of a fall, the rear jaw device 3 can have a safety release 306, as shown in FIGS. 5A to 5C. This allows the lever mechanism 30 to open, for example, when a predefined force is applied, so that the heel part 40 of the ski boot can be removed from the rear jaw device 3.

[0080] FIG. 5C shows an embodiment corresponding to that shown in FIG. 5B, whereby the front jaw device 2 corresponds to that shown in FIG. 3E. The force Fx in the direction of the longitudinal axis X of the shoe presses the web 44 into the retainer 21 and secures it against translation against the longitudinal axis X of the shoe. The spring of the front jaw spring mechanism 26 provides resistance against displacement of the retainer 21 in the direction of the longitudinal shoe axis X and has a safety mechanism. If the force Fx in the direction of the shoe's longitudinal axis X exceeds a predefined value, the mount 21 and the web 44 move along the shoe's longitudinal axis X to such an extent that the web 44 can detach from the mount 21.

[0081] FIGS. 6A and 6B show the ascent mode of the binding system 1 for a touring ski binding. In the ascent mode, the rear jaw device 3 is open and the front jaw device 2 is closed. The web 44 of the ski boot 4 is rotatable locked by the hook system 23 of the front jaw device 2 and secured against translation against the longitudinal axis X of the boot by the locking system 27. The heel part 40 of the ski boot 4 is not fixed in the open state of the rear jaw device 3, so that the ski boot 4 can be rotated about the web axis Y. This is shown in particular in the comparison of FIGS. 6A and 6B.

[0082] Furthermore, FIG. 6C shows an embodiment corresponding to that shown in FIGS. 6B, whereby the front baking device corresponds to that shown in FIG. 3E. The spring of the front jaw spring mechanism 26 presses the retainer 21 against the stop 25 of the locking system 27, so that the retainer 21 can lock the web 44 rotated about the web axis Y. In particular, it can be seen from a comparison of the descent and ascent modes in FIGS. 5A and 6A that the web 44 of the ski boot 4 is offset along the longitudinal axis X of the boot. Thus, a spatial separation of the ski binding modes can be realized by the displaceable retainer 21.

[0083] As far as applicable, all individual features shown in the embodiment examples can be combined and/or interchanged without leaving the scope of the invention.

LIST OF REFERENCE SYMBOLS

[0084] 1 Binding system [0085] 10 Ski [0086] 2 Front jaw device [0087] 20 Holding device [0088] 21 Retainer [0089] 22 Hook-shaped receptacle [0090] 23 Hook system [0091] 24 Opening [0092] 25 Stroke [0093] 26 Front jaw spring mechanism [0094] 27 Locking system [0095] 28 Locking plate [0096] 29 Front jaw lever mechanism [0097] 3 Rear jaw device [0098] 30 Lever mechanism [0099] 32 Base [0100] 34 Lever [0101] 36 Clamping block [0102] 37 Clamping nose [0103] 38 Clamping hook [0104] 306 Safety release [0105] 4 Ski boot [0106] 40 Heel part [0107] 42 Front foot part 44 Web [0108] X Boot longitudinal axis [0109] Y Web axis [0110] Z Ski surface normal