Front unit for a sliding board binding, and sliding board

Abstract

The invention relates to a front unit (10) for a sliding board binding, in particular for a ski touring binding, the front unit (10) being adjustable between an open position and a closed position, and comprising: - a base (11) having a fastening arrangement (12) for fastening to a sliding board (1), - two lateral bearing elements (15) which are designed to engage with lateral counter bearing elements of a shoe in order to hold the shoe such that the shoe can be pivoted about a sliding board transverse axis (Q), the bearing elements (15) having a greater distance in the open position than in the closed position so that the shoe can be introduced between the bearing elements or can be removed from the front unit (10), and - two holding levers (13) for moving the bearing elements (15), wherein at least one holding lever (13) is held on the base (11) so as to be pivotable about an axis of rotation (D), wherein each holding lever (13) has a first limb (14), at the distal end of which one of the bearing elements (15) is arranged, and a pivoting movement of the at least one holding lever (13) allows a relative movement of the bearing elements (15) from the open position into the closed position, wherein the holding levers (13) are operatively connected to one another by means of a spring device (16), characterized in that the spring device (16) is at the same time a bearing (17) for the two holding levers (13).

Description

[0001] Front unit for a gliding board binding and gliding board

[0002] The present invention relates to a front unit for a gliding board binding, in particular for a ski touring binding, as well as a gliding board according to the preambles of the independent claims.

[0003] Various gliding board bindings, and in particular, front units for gliding board bindings, are already known from the state of the art. In addition to ski and ski touring bindings, there are also other binding types for gliding boards, such as cross-country bindings, telemark bindings, snowboard and splitboard bindings, and waterski bindings, which perform different functions and whose binding bodies can be designed accordingly.

[0004] In skiing, a distinction is usually made between piste bindings and touring bindings. Gliding board bindings for skiing generally comprise at least two binding bodies: a heel unit and a toe unit, designed to engage a boot in the downhill position and lock it onto the gliding board. Piste bindings are used for downhill skiing and / or skiing on ski lifts.

[0005] Gliding board bindings for ski touring, on the other hand, are usually adjustable in two positions: a downhill position, similar to conventional ski bindings, and a touring or ascent position. Touring bindings are particularly used in addition to ascending with the help of skins attached to the gliding boards. In a downhill position, a boot should be reliably locked between the toe unit and the heel unit. The gliding board binding should release when a defined force is applied to avoid injury, for example in the event of a fall. At the same time, however, it must ensure that the boot is not released under increased force from an impact or slipping, which could cause it to release unintentionally during the descent and, in the worst case, provoke a fall.

[0006] Especially when touring, a boot must be easy to put on, even in difficult terrain or extreme weather conditions. This should be comfortable, error-free, and effortless.

[0007] EP 0 199 098 A2 discloses a touring ski binding comprising a front bracket of a touring ski binding for pivotally supporting a ski boot during touring. The front bracket has two pivotally mounted and opposing clamping parts which are spring-loaded via retaining levers and can be snapped into their locking and rest positions by overcoming a dead center position.

[0008] EP 3 219 368 A2 discloses a front unit for a gliding board, wherein a joint arrangement comprising three joints is provided between the holding sections, which joints control the pivoting movement relative to one another. The distance between the two outer joints changes when changing from the held state to the released state. These are rotary or solid-state joints. EP 2 392 388 A1 discloses a front unit with two bearing sections which are designed to engage a boot. Finding the correct entry position for the ski boot is simplified by a longitudinal positioning section. The longitudinal positioning section is adjustable between a position for entry and a touring position in order to avoid a collision between the longitudinal positioning section and the pivoting boot.

[0009] The disadvantage of conventional front units is that they are complex to design and manufacture. Accordingly, the material used and thus production costs are high, and the binding is heavy. The complex construction also makes the binding inflexible and prone to errors - especially in difficult conditions. Any repair or adjustment is made more difficult. In addition, safe entry requires a lot of practice and patience and presents major challenges even for experienced users in difficult conditions, particularly on steep and / or uneven terrain. Furthermore, the entry and release force of the front unit is the same and / or cannot be adjusted. Either a great deal of force must be overcome to enter, or there is a risk that the glideboard binding will release inadvertently on the descent. For this reason, many glideboard users block the release of the front unit on the descent.

[0010] The object of the invention is to overcome the disadvantages of the prior art. In particular, a front unit for a gliding board binding and a gliding board are to be provided which minimize the use of materials and thus the costs and guarantee reliable engagement of a boot by the gliding board binding. Ease of use is to be maximized while simultaneously increasing the level of safety. Manufacturing costs are to be reduced through simple and straightforward adjustable and / or replaceable binding components.

[0011] This problem is solved by the front units and the gliding board defined in the independent patent claims. Further embodiments are set out in the dependent patent claims.

[0012] A front unit according to the invention for a gliding board binding, in particular for a ski touring binding, is adjustable between an open position and a closed position. The front unit comprises a base with a fastening arrangement for attachment to a gliding board. The front unit has two lateral bearing elements which are designed to engage lateral counter-bearing elements of a boot. This holds the boot so that it can be pivoted about a transverse axis of the gliding board. In the open position, the bearing elements are spaced apart by a distance which is greater than in the closed position. This allows the boot to be inserted or removed between the bearing elements of the front unit. The front unit also comprises two holding levers for moving the bearing elements. At least one holding lever, preferably both holding levers, is held on the base so that it can be pivoted about a rotation axis.Each holding lever has a first leg, at the distal end of which one of the bearing elements is arranged. A pivoting movement of the at least one holding lever enables a relative movement of the bearing elements from the open position into the closed position. The holding levers are operatively connected to one another via a spring device. The spring device also acts as a bearing for the two holding levers. The term gliding board and the terms containing this term such as «shoe», «binding», «plane», «longitudinal axis» and the like can refer to skis, but also to a splitboard, snowshoes or similar boards for walking and / or gliding on snow and ice. Furthermore, gliding boards for water and / or sand surfaces are conceivable, although this list is not exhaustive.

[0013] A bearing element is understood to be a pin that, in a closed position, is designed to be in contact with a counter-bearing element in the front area of ​​the boot, allowing the boot to pivot about a gliding board's transverse axis. This makes the front unit particularly suitable for use in a ski touring binding.

[0014] The closed position of the front unit is the position in which the front unit can hold a boot in engagement using the bearing elements. This applies to both the downhill and touring positions of the gliding board binding.

[0015] In the open position the gliding board shoe is released or insertion of the gliding board shoe is permitted.

[0016] A spring assembly comprising a bearing has the advantage of reducing the number of parts comprising the front unit. This reduces the weight and cost of the front unit, reduces the susceptibility to errors during manufacture and assembly, and minimizes wear. Safety and operating comfort are increased.

[0017] The bearing element can be cylindrical or conical. However, it can also have any other geometric shape that can come into contact with a corresponding counter-bearing element of a shoe.

[0018] At least one of the retaining levers can be spring-loaded by the spring device. The bearing elements can be preloaded into the closed position or the open position by overcoming a dead-center position of at least one of the retaining levers.

[0019] Thanks to the pre-tensioning of the retaining levers, the front unit is not accidentally moved from an open to a closed position, or from a closed to an open position. The boot can be reliably engaged in a closed position. A safe and comfortable ascent and / or descent is ensured. At the same time, the closed position is only triggered when necessary. Operating comfort is noticeably increased.

[0020] The bearing can be formed by a slotted sleeve.

[0021] The sleeve is preferably made of spring steel. However, an elastomer is also conceivable. Preferably, a spring steel 1.7103 according to DIN EN 10089 (2003) is used for this purpose, whereby the sleeve can have a diameter in the range of 6.0 mm to 16.0 mm, preferably 8.0 mm to 14.5 mm, particularly preferably 10 mm to 13.0 mm, and a wall thickness of between 0.5 mm and 3.0 mm, preferably 0.75 mm and 2.5 mm, particularly preferably 1.0 mm to 1.5 mm. The slot width is between 0.5 mm and 6.0 mm, preferably between 2.0 mm and 5.5 mm, particularly preferably between 3.5 and 5.0 mm. The sleeve can have a length of 5.0 to 15.0 mm, preferably 8.0 to 13.0 mm, particularly preferably 10.0 to 12.0 mm. Slotted sleeves have the advantage that they can not only serve as connecting elements, but can also absorb impact and shock forces due to their spring properties.They can exert continuous pressure on the retaining levers and permanently preload them into the open or closed position. They are also easy to install and therefore simple to replace if they become worn. Installation and maintenance costs are low.

[0022] In addition to a slotted sleeve, it is also conceivable to use a different spring or a closed sleeve. The spring element does not have to have a circular cross-section; other shapes are also conceivable, e.g., oval, elliptical, triangular, square, or other polygons.

[0023] A single, discrete spring element can be formed between the retaining levers. By forming a single spring element, the design of the front unit can be significantly simplified. This makes the construction more robust and less prone to failure. A discrete spring element is an element that exhibits a spring property. For example, it is a spring element made of an elastomer, spring steel, or another suitable elastic material.

[0024] The holding lever can be designed in an angular manner, with a second leg forming an angle of 90° ± 15° with the first leg. The first leg has the bearing element at its distal end. The angle is measured between a straight line running on the outside of the first leg and a second straight line running on the side of the second leg facing the gliding board. The length of the second leg can correspond to at least half the distance between the two bearing elements in the closed position. By dimensioning the length of the second leg as large as possible compared to the first leg, a large force on the first leg and thus the clamping force in the closed position can be achieved with a comparatively low preload force of the spring device. The length of the leg is measured starting from the axis of rotation of the holding lever and ending at its distal end.

[0025] A further aspect of the present invention is a front unit for a gliding board binding, preferably as described above. The front unit is particularly suitable for a ski touring binding. It is adjustable between an open position and a closed position and comprises a base with a fastening arrangement for attachment to a gliding board. It further comprises two lateral bearing elements which are designed to engage lateral counter-bearing elements of a boot. This holds the boot so that it can pivot about a gliding board transverse axis. In the open position, the bearing elements are spaced apart by a distance which is greater than in the closed position. The boot can therefore be inserted between the bearing elements or removed from the front unit.The front unit additionally comprises two holding levers for moving the bearing elements, with at least one holding lever being held on the base so as to be pivotable about a rotation axis. Each of the holding levers has a first leg, at the distal end of which one of the bearing elements is arranged. A pivoting movement of the at least one holding lever enables a relative movement of the bearing elements from the open position into the closed position. The holding levers are operatively connected to one another via a spring device. The front unit additionally has a longitudinal positioning element for positioning the shoe. The longitudinal positioning element can be pivoted and fixed on an axis vertical to the base plane.

[0026] In the context of the present application, a vertical axis is understood to be an axis that is approximately perpendicular to the gliding board plane. The vertical axis can deviate from the vertical by up to 20°, preferably less than 10°, and particularly preferably less than 5°.

[0027] Thanks to a longitudinal positioning element, the boot can be positioned carefully and precisely in the front unit so that the positioning accuracy is within the range of the diameter values ​​of the bearing and counter bearing elements. The demands on the user when putting on the boot are significantly reduced by the longitudinal positioning elements. Even under difficult conditions such as steep terrain, snow-covered front units or extreme weather conditions, the boot can be securely engaged by the binding. This makes putting on much easier, particularly for less experienced users and / or in difficult external conditions, making it quicker and more comfortable. By avoiding failed attempts, potential wear and tear on the front unit and thus the lifespan of the gliding board binding is increased.

[0028] The gliding board binding preferably has two longitudinal positioning elements. However, a single, three, or more longitudinal positioning elements are also conceivable, depending on the design and construction.

[0029] The longitudinal positioning element can be fixed to the base by means of a fastening arrangement. The fastening arrangement can preferably comprise a screw thread and a screw. This has the advantage that after loosening the fastening arrangement, the distance from the bearing elements to the longitudinal positioning element can be adjusted to the shoe model or the degree of wear of the shoe or gliding board. After adjusting the distance, the longitudinal positioning element can be fixed immovably to the base again by means of the fastening arrangement. Fixing the longitudinal positioning elements to the base has the advantage that, apart from the longitudinal positioning element with fastening arrangement, no additional elements are required for adjustment and a simple pivoting around the vertical axis is sufficient. When using commercially available screws, the longitudinal positioning element can be adjusted easily.

[0030] The longitudinal positioning element may comprise a pin and / or be formed substantially by a pin.

[0031] The material-saving design of the longitudinal positioning element is advantageous. This reduces weight and manufacturing costs.

[0032] The longitudinal positioning element can also be a plate or have other geometric shapes.

[0033] The front unit can have a closing actuating lever which is adjustable between an unlocked position and a locked position. In the unlocked position, adjustment from the closed position to the open position is possible, whereas in the locked position, adjustment from the closed position to the open position is blocked. In a locked position, the closing actuating lever is in an active position. The advantage is that the locking prevents a transition from a closed position to an open position. Accidental release of the shoe from the front unit, for example when climbing, can be prevented.

[0034] The closing lever can be operatively connected to at least one of the retaining levers in such a way that it can force an adjustment from the closed position to the open position and / or from the open position to the closed position. This allows for targeted opening and / or closing of the binding. The bearing elements can thus be deliberately and controlledly brought into engagement with the counter-bearing elements of a boot.

[0035] A further aspect of the present invention is a front unit for a gliding board binding, in particular as described above. The gliding board binding is particularly suitable as a ski touring binding. The front unit is adjustable between an open position and a closed position and comprises a base with a fastening arrangement for attachment to a gliding board. The front unit further comprises two lateral bearing elements which are designed to engage lateral counter-bearing elements of a boot. The boot is thereby held so as to be pivotable about a gliding board transverse axis. The bearing elements are spaced apart in the open position by a distance which is greater than in the closed position. The boot can therefore be inserted between the bearing elements or removed from the front unit.The front unit additionally comprises two holding levers for moving the bearing elements, wherein at least one holding lever, preferably both holding levers, is held on the base so as to be pivotable about an axis of rotation. Each of the holding levers has a first leg, at the distal end of which one of the bearing elements is arranged. A pivoting movement of the holding lever enables a relative movement of the bearing elements from the open position into the closed position. The holding levers are operatively connected to one another via a spring device. A preload of the holding levers in the open position is different from a preload in the closed position. As a result, a force to overcome a dead center from the open position to the closed position is smaller than from the closed position to the open position.

[0036] The retaining levers are preloaded at least by the spring mechanism. Additional forces are possible.

[0037] The fact that a greater force must be overcome to move from the open position to the closed position than from the closed position to the open position simplifies operation and increases safety. Blocking the front unit in the closed position using a closing mechanism in a downhill position to prevent accidental activation during descent is not necessary, and a safety release is guaranteed in an emergency. At the same time, the force required to engage the boot is low.

[0038] The force can be adjustable. Under this condition, different configurations are conceivable. In at least one configuration, the force from the open position to the closed position must be smaller than that from the closed position to the open position. However, configurations are also conceivable in which the force can be the same or greater. The preload of the retaining levers can be the resultant force from the force of the spring device plus a second superimposed force. The second superimposed force can change depending on the position of the retaining levers.

[0039] In the center position of the retaining levers, when the spring mechanism is centered on the connecting line between the two rotational axes of the retaining levers, the spring load is greatest. This position corresponds to the dead center. From here, the retaining levers can pivot into the closed or open position.

[0040] The closer the holding levers are to the dead center, the lower the total entry or release force.

[0041] With the help of a connecting mechanism between the gliding board and the spring device, the position of the spring device can be adjusted relative to the gliding board plane.

[0042] The second superimposed force can be defined by a connecting mechanism between the base and the spring device. The connecting mechanism can comprise at least one connecting rod and one elastic element. The connecting rod can act on the elastic element and the spring device. By means of such a connecting mechanism with an additional elastic element, the superimposed force can be deliberately directed in one direction, so that, for example, a movement into the closed position is supported and a movement into the open position is counteracted.

[0043] The elastic element can be arranged in the base of the front unit. By means of an adjusting element, for example a screw, the tension of the elastic element, which acts on the connecting rod and thus on the spring device, can be adjusted.

[0044] Another object of the present invention relates to a sliding board with a front unit as described above.

[0045] The base and / or the retaining levers of the front unit can be made of a metal. The metal can be selected from the group comprising precious metal, steel, spring steel, and / or aluminum, as well as alloys thereof. Plastic-based and / or fiber-reinforced materials are also conceivable. A design of the front unit without plastic is also conceivable.

[0046] The advantage of choosing metal is that the gliding board binding can withstand greater forces and increases its longevity. Accordingly, the gliding board binding and all its individual components can be recycled at the end of its life.

[0047] A further aspect of the present invention is a front unit for a gliding board binding, in particular as described above. The gliding board binding is particularly suitable as a ski touring binding. The front unit is adjustable between an open position and a closed position and comprises a base with a fastening arrangement for attachment to a gliding board. The front unit further comprises two lateral bearing elements which are designed to engage lateral counter-bearing elements of a boot. The boot is thereby held pivotably about a gliding board transverse axis. The bearing elements are spaced apart in the open position by a distance which is greater than in the closed position. The boot can therefore be inserted between the bearing elements or removed from the front unit.The front unit also comprises two holding levers for moving the bearing elements, wherein at least one holding lever, preferably both holding levers, is held on the base so as to be pivotable about a rotation axis. Each of the holding levers has a first leg, at the distal end of which one of the bearing elements is arranged. A pivoting movement of the holding lever enables a relative movement of the bearing elements from the open position into the closed position. The holding levers are operatively connected to one another via a spring device. According to the invention, the distance is adjustable in the open position and / or in the closed position.

[0048] The distance between the bearing elements can be adjusted by the interaction of a closing actuation lever and / or an adjusting section with at least one of the retaining levers. Other adjustment mechanisms are conceivable.

[0049] Adjusting the distance has the advantage that the front unit can be adapted to different shoe widths.

[0050] A suitable distance is crucial for ensuring that the shoe can be optimally positioned between the bearing elements in the open position. Optimal positioning enables simple, user-friendly coupling of the shoe and the front unit. Incorrect, unstable engagement of the shoe can be prevented. Regardless of the width of a selected shoe model, the present invention enables easy and comfortable entry.

[0051] In the closed position the adjustable distance has the advantage that the force acting from the bearing elements on the shoe is the same regardless of the shoe size or shoe model. This means that the force required to trigger the

[0052] Shoe from the front unit the same size and adjustable.

[0053] The invention is explained in more detail below with reference to figures which merely represent exemplary embodiments. They show:

[0054] Figure 1: a side view of a gliding board with a gliding board binding comprising a front unit and a heel unit,

[0055] Figure 2 : a perspective view of the front unit according to Figure 1 in an open position,

[0056] Figure 3 : a front view of the front unit according to Figure 2 ,

[0057] Figure 4: a longitudinal cross-section of a sliding board through the front unit according to a further embodiment,

[0058] Figure 5a : a perspective view of a front unit with an adjustable distance of the bearing elements,

[0059] Figure 5b: Section of a cross-section through the front unit 10 of an alternative embodiment according to Figure 5a, and

[0060] Figure 5c: Detail of a cross section through the front unit 10 of a further alternative embodiment according to Figure 5a.

[0061] Figure 1 shows a side view of a gliding board 1 with a gliding board binding 2, which has a front unit 10 and a heel unit 20. The gliding board binding 2 is particularly suitable as a binding for ski touring skis. The binding 2 is in a downhill position. The front unit 10 and the heel unit 20 are fastened to the gliding board 1 along a gliding board longitudinal axis L. A base 11 of the front unit 10 and a base 21 of the heel unit 20 are arranged on the gliding board 1 and serve to mount the two binding units. The base 11 has a base plane E and the base 21 has a base plane F. The front unit 10 and the heel unit 20 are mounted on the side opposite the gliding surface G of the gliding board 1. A gliding board plane H coincides with the base planes E and F.

[0062] Figure 2 shows a perspective view and Figure 3 a front view of the front unit 10 according to Figure 1 in an open position. The front unit 10 according to the invention can be adjusted into an open and a closed position. The front unit 10 is fastened to the sliding board 1 with its base 11 by means of a fastening arrangement 12. In the present embodiment, the fastening arrangement 12 is formed by a screw hole which enables the front unit 10 to be mounted on the sliding board 1 via the base 11 and the base plane E by means of screws (not shown).

[0063] The front unit 10 has two lateral holding levers 13 with a first leg 14 and a second leg 14'. At the distal end of each holding lever 13 there is a bearing element 15 in the form of a pin. The bearing elements 15 are arranged essentially parallel to a gliding board transverse axis Q and orthogonal to the first legs 14. In the closed position (not shown) the bearing elements 15 can engage lateral counter-bearing elements 54 of a shoe 50. The shoe 50 is thus held pivotably about a gliding board transverse axis Q. In the open position shown the distance K between the pins 15 is greater than the distance I between the counter-bearing elements 54 of the shoe 50. The two holding levers 13 are spring-loaded by a spring device 16 and interact with one another. In the embodiment shown, the spring device 16 is a slotted sleeve made of spring steel.The slotted sleeve also serves as a bearing 17 for the two retaining levers 13. The retaining levers 13 are preloaded into the illustrated open position by the spring device 16. The retaining levers 13 are mounted on the base 11 so as to be pivotable about a rotation axis D.

[0064] By overcoming an unstable dead center position of the two retaining levers 13, the bearing elements 15 can be preloaded from the open position into the closed position and engage the shoe 50 for ascent or descent. The distance K between the two bearing elements 15 then essentially corresponds to the distance between the counter bearings 54 of the shoe 50. The force required to overcome the dead center position depends on the position of the retaining levers 13. The closer the retaining levers are to the dead center, the lower the force required to overcome the dead center. Of course, the force required to overcome the dead center also depends on the design and dimensioning of the spring device 16.

[0065] The illustrated front unit 10 also comprises two longitudinal positioning elements 100, which are designed as pins. The longitudinal positioning elements 100 are fixed to the base 11 of the gliding board 1 by means of a fastening arrangement 101. In the embodiment shown, the fastening arrangement 101 comprises a screw for mounting the longitudinal positioning elements 100 on the base 11. By loosening the fastening arrangement 101, the longitudinal positioning elements 100 can be pivoted about an axis V4, V5 perpendicular to the base plane E. The longitudinal positioning elements 100 enable precise positioning of the shoe 50 in the front unit 10. The position of the longitudinal positioning elements 100 can be adapted to a shoe model and / or wear of the shoe 50, so that the positioning accuracy of a shoe 50 lies in the range of the diameter values ​​of bearing elements 15 and counter-bearing elements 54.The shoe 50 can be easily and safely positioned and engaged between the bearing elements 15 even under difficult conditions.

[0066] The front unit 10 also comprises a closing actuating lever 18 which interacts with an adjusting section 19. The closing actuating lever 18 is adjustable between an unlocking position, in which the movement of the adjusting section 19 is not impeded, and a locking position, in which the adjusting section 19 is blocked in a locking position. The adjusting section 19 is in direct operative connection with the bearing 17 and / or the second legs 14' of the holding levers 13. In the locking position, the movement of the holding levers 13 is thus also blocked, so that a safety release of the front unit 10 is blocked. In a touring position, which is preferably set when ascending, the closing actuating lever 18 is usually in this locking position. When descending, the closing actuating lever 18 is preferably used in the unlocking position.The actuating section 19 is not obstructed, nor are the movement of the bearing 17 and / or the second legs 14 impaired. In the event of a large force, a safety release is possible.

[0067] In the illustration according to Figure 3, the position of the spring device 16 is slightly higher than the dead center relative to a vertical axis. At the dead center, the bearing 17 would be located centrally on the connecting line between the two rotation axes D of the holding levers 13. The preload of the spring device 16 is greatest at the dead center.

[0068] By pressing with the shoe 50 on the adjusting section 19 in the direction of the base plane E, the second legs 14' and the bearing 17 can be moved in the direction of the base plane E. The dead center is overcome and the bearing elements 15 engage in the counter-bearing elements 54 of the shoe 50. The distance K between the bearing elements 15 then essentially corresponds to the distance between the counter-bearing elements 54 of the shoe 50. The spring device 16 pre-tensions the holding levers 13 accordingly in the closed position so that the shoe 50 is held in place. Since in the open position the bearing 17 is already close to the dead center, only a small amount of force is required to overcome the dead center.

[0069] As shown in Figure 3, the holding lever 13 has an angle a of 80° between the first leg 14 and the second leg 14'. The length of the second leg 14' is greater than the length of the first leg 14. The length of the shanks is measured from the axis of rotation D of the holding lever 13 to the distal end of the first or second leg 14, 14'. The length LS' of the second leg 14' is greater than the distance K between the two bearing elements 15 in the open position.

[0070] Figure 4 shows a cross-section in the longitudinal direction L of a gliding board through the front unit 10 according to a further embodiment. The front unit 10 is shown in the open position and essentially corresponds to the front unit 10 according to Figure 2. In addition, the front unit 10 has an additional element which influences the pretension of the holding levers 13. Schematically shown is a connecting mechanism 90 which acts as a second superimposed force on the pretension of the holding levers 13. The connecting mechanism 90 is arranged between the base 11 and the spring device 16 and can be adjusted. A connecting rod 91, as part of the connecting mechanism 90, acts on the spring device 16 and on an elastic element 92 which is connected to the base 11.By means of the connecting mechanism 90, the position of the spring device 16 can be adjusted relative to the base plane E and thus also to the dead center. A distance between the spring device 16 and the base plane E, and thus the distance to the dead center, can be adjusted, for example, by means of a screw 93. Furthermore, the force of the elastic element 92, which acts on the connecting rod 91 and thus on the spring device 16, is adjusted by means of the screw 93.

[0071] Figure 5a shows a perspective view of a front unit 10 with an adjustable distance between the bearing elements 15. The front unit 10 is shown in the closed position and essentially corresponds to the front unit 10 according to Figure 2. In addition, the base 11 has a screw 94. A screw thread of the screw 94 is screwed into the base 11 essentially parallel to the base plane E and determines the position of the closing actuating lever 18. The closing actuating lever 18 interacts with the adjusting section 19, which is in direct operative connection with the bearing 17.

[0072] By means of the position of the screw 94, the locking position of the bearing 17 or the holding lever 13 in the open and / or closed position can be changed. If the screw 94 is screwed in, the locking position of the bearing 17 moves away vertically to the base plane E from the base 11. A clamping stroke is limited earlier. The distance K of the bearing elements 15 becomes larger in the closed position. A wide shoe 50 can be engaged. Figure 5b shows a section of a cross section through the

[0073] Front unit 10 of the embodiment according to Figure 5a . The

[0074] Screw 94 is screwed essentially at a 45° angle with respect to the base plane E and determines the end position of the bearing elements 15.

[0075] Figure 5c shows a section of a cross section through the

[0076] Front unit 10 of an alternative embodiment according to Figure 5a . The screw 94 is essentially at a 90 ° angle in

[0077] Turned in relation to the base plane E and determines the end position of the bearing elements 15 .

[0078] Instead of an additional element, another spring element, for example a sleeve with a greater wall thickness, can be used to adjust the preload.

Claims

Patent claims 1. A front unit (10) for a gliding board binding (2), in particular for a ski touring binding, wherein the front unit (10) is adjustable between an open position and a closed position, comprising: a base (11) with a fastening arrangement (12) for fastening to a gliding board (1), two lateral bearing elements (15) which are designed to engage lateral counter-bearing elements (54) of a boot (50) in order to hold the boot (50) pivotably about a gliding board transverse axis (Q), wherein the bearing elements (15) have a distance (K) in the open position which is greater than in the closed position, so that the boot (50) can be inserted between the bearing elements (15) or removed from the front unit (10), and two holding levers (13) for moving the bearing elements (15), wherein at least one holding lever (13), preferably both holding levers (13) , is held pivotably on the base (11) about an axis of rotation (D),wherein each holding lever (13) has a first leg (14), at the distal end of which one of the bearing elements (15) is arranged, and a pivoting movement of the at least one holding lever (13) enables a relative movement of the bearing elements (15) from the open position to the closed position, wherein the holding levers (13) are operatively connected to one another via a spring device (16), characterized in that the spring device (16) is simultaneously a bearing (17) for the two holding levers (13).

2. Front unit (10) according to claim 1, wherein at least one of the holding levers (13) is spring-loaded by the spring device (16) and the bearing elements (15) are pretensioned into the closed position or into the open position by overcoming a dead center position of at least one of the holding levers (13).

3. Front unit (10) according to claim 1 or 2, wherein the bearing (17) is a slotted sleeve (17').

4. Front unit (10) according to claim 3, wherein the slotted sleeve (17') is made of a spring steel and has a diameter in the unloaded state of 6.0 mm to 16.0 mm, preferably 8.0 mm to 14.5 mm, particularly preferably 10 mm to 13.0 mm.

5. Front unit (10) according to one of the preceding claims, wherein a single discrete spring element is arranged between the holding levers (13).

6. Front unit (10) according to one of the preceding claims, wherein the holding lever (13) is angularly designed, wherein a second leg (14') forms an angle (a) of 90° ± 15° with the first leg (14).

7. Front unit (10) according to claim 5, wherein a length of the second leg (14') corresponds to at least half the distance (K) between the two bearing elements (15) in the closed position.

8. Front unit (10), in particular according to one of the preceding claims, for a gliding board binding (2), in particular for a ski touring binding, wherein the front unit (10) is adjustable between an open position and a closed position, comprising: a base (11) with a base plane (E) and a fastening arrangement (12) for fastening to a gliding board (1), two lateral bearing elements (15) which are designed to engage lateral counter-bearing elements (54) of a shoe (50) in order to hold the shoe (50) pivotably about a gliding board transverse axis (Q), wherein the bearing elements (15) in the open position have a distance (K) which is greater than in the closed position, so that the shoe (50) can be inserted between the bearing elements (15) or removed from the front unit (10), and - two holding levers (13) for moving the bearing elements (15), wherein at least one holding lever (13), preferably both holding levers (13), is held on the base (11) so as to be pivotable about an axis of rotation (D), wherein each holding lever (13) has a first leg (14), at the distal end of which one of the bearing elements (15) is arranged, and a pivoting movement of the at least one holding lever (13) enables a relative movement of the bearing elements (15) from the open position into the closed position, wherein the holding levers (13) are operatively connected to one another via a spring device (16), wherein the front unit has a longitudinal positioning element (100) for positioning the shoe (50), wherein the longitudinal positioning element (100) is pivotable and fixable on an axis (V4, V5) vertical to the base plane (E).

9. Front unit (10) according to claim 9, wherein the longitudinal positioning element (100) comprises a pin.

10. Front unit (10) according to one of the preceding claims, wherein the front unit (10) has a closing actuating lever (18) which is adjustable between an unlocking position in which adjustment from the closed position to the open position is possible, and a locking position in which adjustment from the closed position to the open position is blocked.

11. Front unit (10) according to claim 10, wherein the closing actuating lever (18) is operatively connected to at least one of the holding levers (13) in such a way that an adjustment from the closed position to the open position and / or from the open position to the closed position can be forced thereby.

12. Front unit (10) for a gliding board binding (2), in particular for a ski touring binding, in particular according to one of the preceding claims, wherein the front unit (10) is adjustable between an open position and a closed position, comprising: a base (11) with a fastening arrangement (12) for fastening to a gliding board (1), two lateral bearing elements (15) which are designed to engage lateral counter-bearing elements (54) of a boot (50) in order to hold the boot (50) pivotable about a gliding board transverse axis (Q), wherein the bearing elements (15) have a distance (K) in the open position which is greater than in the closed position, so that the boot (50) can be inserted between the bearing elements (15) or removed from the front unit (10), and two holding levers (13) for moving the bearing elements (15), wherein at least one holding lever (13), preferably both holding levers (13), is held on the base (11) so as to be pivotable about an axis of rotation (D), wherein each holding lever (13) has a first leg (14), at the distal end of which one of the bearing elements (15) is arranged, and a pivoting movement of the at least one holding lever (13) enables a relative movement of the bearing elements (15) from the open position into the closed position, wherein the holding levers (13) are operatively connected to one another via a spring device (16), characterized in that a pretension of the holding levers (13) is different in the open position and in the closed position, such that a force for overcoming a dead center from the open position to the closed position is smaller than from the closed position to the open position.

13. Front unit (10) for a gliding board binding (2) according to claim 12, wherein the preload of the holding levers (13) is the resultant force from the force of the spring device (16) and a second superimposed force, wherein the second superimposed force changes depending on the position of the holding levers (13).

14. Front unit (10) for a gliding board binding (2) according to claim 13, wherein the second superimposing force is defined by a connecting mechanism (90) between the base (11) and the spring device (16), the connecting mechanism (90) comprising at least one connecting rod (91) and one elastic element (92), the connecting rod (91) acting on the elastic element (92) and the spring device (16).

15. Front unit (10) for a gliding board binding (2), in particular for a ski touring binding, in particular according to one of the preceding claims, wherein the front unit (10) is adjustable between an open position and a closed position, comprising - a base (11) with a fastening arrangement (12) for fastening to a gliding board (1), two lateral bearing elements (15) which are designed to engage lateral counter-bearing elements (54) of a shoe (50) in order to hold the shoe (50) pivotably about a gliding board transverse axis (Q), wherein the bearing elements (15) in the open position have a distance (K) which is greater than in the closed position, so that the shoe (50) can be inserted between the bearing elements (15) or removed from the front unit (10), and two holding levers (13) for moving the bearing elements (15), wherein at least one holding lever (13), preferably both holding levers (13), is held on the base (11) so as to be pivotable about an axis of rotation (D), wherein each holding lever (13) has a first leg (14), at the distal end of which one of the bearing elements (15) is arranged, and a pivoting movement of the at least one holding lever (13) enables a relative movement of the bearing elements (15) from the open position into the closed position, wherein the holding levers (13) are operatively connected to one another via a spring device (16), characterized in that the distance (K) is adjustable in the open position and / or the closed position.

16. Sliding board (1), characterized in that the sliding board (1) comprises a front unit (10) according to one of claims 1 to 14.

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