Heel unit for a sliding board binding, and sliding board

Abstract

A heel unit (20) for a sliding board binding can be adjusted between a downhill position, in which the heel unit fixes the heel portion of a boot, and at least one touring position, in which the heel unit releases the heel portion of the boot. The heel unit (20) comprises a base (21) with a securing assembly for securing to a sliding board (1), a binding element (23) which is mounted on the base (21) for rotation about a vertical axis (VI), and two holding means (24) for holding a boot in the heel portion of the boot. The holding means (24) can be moved relative to each other in a plane parallel to the base plane (F), such that the distance (B) between the holding means (24) can be adjusted. A rotary bearing is provided in a central region of each holding means (24), the holding means (24) being pivotally mounted about the rotary bearing about a vertical axis.

Description

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

[0002] The present invention relates to a heel unit for a

[0003] Gliding board binding, in particular a ski touring binding, and a gliding board according to the generic terms of the independent claims.

[0004] Various 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.

[0005] 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.

[0006] Gliding board bindings for ski touring, on the other hand, are typically adjustable in two positions: a downhill position, similar to conventional ski bindings, and a touring or ascent position. Touring bindings are primarily used for ascending with the aid of skins attached to the gliding boards.

[0007] In a downhill position, a binding body should reliably fix the heel section of a ski touring boot in a holding position on the gliding board. An optional brake assembly is held in a non-operating position so that a ski can glide over the ground. In the event of a fall or unusual force, when a safety release is preferably triggered, the brake assembly should be moved to an active position. This prevents the free ski from sliding down. The basic functional principle of such a brake assembly corresponds to that of the ski brake known from alpine bindings.

[0008] In a touring position, which is used when climbing a mountain, the heel section of the ski touring boot should be released so that the ski touring boot can lift off the heel unit. The ski touring boot is held horizontally and pivots around an axis in the transverse direction of the ski.

[0009] At least one optional climbing aid can be adjustable to an active and / or a passive configuration. Because the active climbing aid position supports the ski touring boot at a predetermined height above the base level, these configurations are preferred for steeper climbs. The strain on the calves and Achilles tendons is reduced.

[0010] The optional brake assembly is held in a non-operating position in a touring position, allowing the ski to glide over the ground. The brake assembly is thus fixed at the height of the gliding board.

[0011] Depending on the design, the type of touring binding and the desired function, the heel unit can have different configurations in a touring position. The document AT 402 020 B, for example, discloses a heel piece which has two individual pivoting pins which are pivotally mounted about a vertical axis in the rear area of ​​a housing. The other end of the pins comes into contact with the ski boot. The pins have a wedge-like inclined surface which rests against a spring-loaded abutment. The design enables a safe release in a forward direction. The force for release depends on the distance which must be overcome by the pins and on a spring force. The force required for release can therefore be adjusted using the spring force.

[0012] EP 3 702 005 A1 discloses a heel unit with at least one holding means for holding a ski boot, wherein the holding means may have two free ends. A groove at the end of each arm of the holding means allows the arms to pivot relative to each other in two displaceably mounted sleeves.

[0013] EP 3 053 632 A1 discloses an automatic heel unit with a holding device for holding a ski boot in the area of ​​the heel of the ski boot. The two arms of the holding device can be formed by two separate metal rods that are pivotally mounted separately at the ends.

[0014] A disadvantage of the disclosed automatic heel units is that a safety release in the forward direction cannot be optimally controlled. For example, if a single retaining element of the ski boot is loaded from one side, the safety release in the forward direction can be incorrectly triggered. The release value can only be adjusted over a limited range, and the force on the retaining elements is very high in the event of an overload. In addition, the known solutions are very heavy. Furthermore, during a descent, the force is not transferred directly from the boot sole to the ski, but only via the retaining elements and the binding body. Controlling the ski is difficult.

[0015] The object of the invention is to overcome the disadvantages of the prior art. Tourers and freeriders want ski bindings that are lightweight, highly stable, reliable, have precise power transmission, are affordable and offer the highest safety standards. In summary, walking comfort should be maximized without compromising on riding comfort and / or the level of safety. The binding should therefore be of compact construction, conserving material resources and being cost-effective to manufacture. Despite minimal use of materials and being lightweight, the gliding board binding should be highly stable and wear-resistant. In particular, the gliding board binding should meet the highest safety requirements by allowing the safety release to be adjusted individually depending on the riding style and avoiding false releases.This minimizes the risk of injury in the event of a fall or other overload, without increasing the risk of accidents due to incorrect release. At the same time, the force exerted when stepping into the gliding board binding should be minimal.

[0016] This problem is solved by the heel units and the gliding board defined in the independent patent claims. Further embodiments are set out in the dependent patent claims.

[0017] A heel unit according to the invention for a gliding board binding, in particular a ski touring binding, is adjustable between a downhill position and a touring position. In the downhill position, the gliding board binding holds a heel section of a boot. In a touring position, the gliding board binding releases the heel section of the boot. This allows the boot to lift off the heel unit. The heel unit comprises a base with a base plane and a fastening arrangement for fastening to a gliding board, as well as a binding body which is mounted on the base so as to be rotatable about a vertical axis. The heel unit also comprises two holding means for holding a boot in a heel section of the boot. The holding means are movable relative to one another in a plane parallel to the base plane. This means that the distance between the holding means can be changed. A pivot bearing is formed in a central region of each holding means.The holding means are pivotally mounted around a vertical axis around the pivot bearing.

[0018] The term "gliding board" and related terms such as "boot," "binding," "plane," "longitudinal axis," and the like can refer to skis, but also to splitboards, snowshoes, or similar boards for walking and / or gliding on snow and ice. Gliding boards for water and / or sand surfaces are also conceivable, although this list is not exhaustive.

[0019] Here and in the following, a central region of the retaining means is understood to mean an area within the outer 10 percent, measured from the end of the retaining means in the longitudinal direction of the retaining means. The pivot bearing can, but does not have to, be arranged symmetrically to the length of the retaining means.

[0020] The base of the heel unit enables mounting on the gliding board. It is advantageously flat and can, for example, be plate- or rail-shaped. The base can be attached to the gliding board by means of a fastening arrangement. Assuming that the base is mounted on the gliding board, the base plane coincides with a gliding board plane. The gliding board plane defines the top side of the gliding board and is therefore located on the side of the gliding board facing away from the gliding surfaces. The longitudinal axis of the gliding board therefore also corresponds to the longitudinal axis of the base.

[0021] 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°.

[0022] In the case of a forward fall, we speak of a Z-value, a trigger value according to the DIN ISO 11088:2023-08 standard. Z stands for the vertical axis in the spatial coordinate system. The Z-value is intended to limit the torque on the tibia. When setting the value, the rider's height, weight, and sole length, as well as riding style, are taken into account.

[0023] The holding means has at least one free end as an engagement element for holding a boot. The established market standard for ski touring bindings comprises two holding means. The holding means can be formed by an elongated pin. This allows commercially available boots to be held in the downhill position with the heel unit. However, peg or spherical shapes or any other imaginable shape that can be coupled to a boot are also conceivable as the free end of the holding means. The holding means can preferably be designed as a circular cylindrical body, but also as a cuboid, prism or other geometric shape. The variable distance between the holding means enables an opening in the boot to be guided from top to bottom over the holding means when putting on the boot and to be engaged by the binding with little effort.In the same way, the two holding elements can also be moved apart from their holding distance against the holding force if a force acting on the heel unit in the minus Z direction is sufficiently large to release the shoe from the heel unit in a forward direction for a safety release.

[0024] The relative movement of the two retaining elements can be toward each other or away from each other. Depending on the design, an inward or outward deflection can offer the same advantages.

[0025] In a touring position, the boot is released from the retaining device. The heel unit remains fixed to the base.

[0026] The Z-value of the gliding board binding can be adjusted for user weight classes between 10 kg and 200 kg, preferably between 40 kg and 120 kg.

[0027] The possibility of an exact adjustment of the Z-value to the individual needs of the respective user has the advantage that the binding opens in case of an overload, but does not trigger incorrectly in case of a light load.

[0028] The binding body can be rotated in at least two rotational positions about the vertical axis. Various rotational positions, preferably two, three or four defined rotational positions, are preferably possible. A defined rotational position can be defined by a locking position of the binding body. A first rotational position corresponds to the downhill position. The holding means point in the direction of a front unit of the ski touring binding. The downhill position preferably does not correspond to a touring position. In a touring position, the base body of the heel unit can be in different rotational positions. In a second rotational position, the binding body can be pivoted clockwise and / or counterclockwise by approximately 90° about the vertical axis relative to the downhill position.In the described rotational position, the binding body can be pivoted about the vertical axis by 60° - 120°, preferably by 70° - 110°, particularly preferably by 80° - 100° relative to the downhill position. In one embodiment, the binding body is pivoted about the vertical axis by 93° relative to the downhill position. In a further rotational position, the binding body is pivoted about the vertical axis by approximately 180° relative to the downhill position. This means that the binding body is pivoted about the vertical axis by 150° - 210°, preferably by 160° - 200°, particularly preferably by 170° - 190° relative to the downhill position.

[0029] Lateral release of the heel unit can be achieved by rotating the binding body.

[0030] The pivot bearing of the holding means can be arranged at least 20 length percent, preferably at least 25 length percent based on the length of the holding means from one end of the holding means.

[0031] Such positioning of the pivot bearing enables the forces within the holding device to be better distributed. By arranging the pivot bearing in the middle area of ​​the holding device, stability is increased thanks to the even load, even with the same design of the holding device. Possible breakage or deformation of the holding device under high forces can be prevented and wear reduced. The pivot bearing for the holding device can be designed as a groove in the holding device. The groove can preferably be circumferential. The groove can be milled or turned. The groove can therefore also only partially circumferentially around the holding device. The pivot bearing can also be designed as a hole.

[0032] A circumferential groove offers the advantage of high manufacturing tolerances. The symmetry simplifies production and assembly, making them cost-effective. Alignment is eliminated. A retaining element with a circumferential groove also offers increased stability compared to a retaining element with, for example, a through-hole.

[0033] The pivot bearing can also have a bolt that engages the groove. Bolts are known for their high strength. This allows the pivot bearing to withstand even high-energy impacts.

[0034] Rivets or other separate connecting elements are also conceivable. As an alternative to a separate element, it is conceivable that the groove engages with a preferably integral structural element of the binding body.

[0035] The pivot bearing can secure the holding device longitudinally.

[0036] A longitudinal locking mechanism enables reliable engagement of the retaining elements in the boot and ensures a safe release at precisely adjustable and controllable values. This also has the advantage that the retaining elements are securely mounted in the binding body even when not engaged and cannot become loose or shift. The retaining elements can be mounted so they can rotate around their own longitudinal axis.

[0037] This facilitates the engagement of the retention elements in the boot when the boot is guided from top to bottom over the retention elements. Frictional resistance between the boot and retention elements is reduced to a minimum. This reduces the entry force and enables easy, uncomplicated, and comfortable entry. The tolerance of the boot's positioning for interaction with the retention elements is increased. Regular, circumferential wear of the pin is also beneficial for the longevity of the binding.

[0038] The rotation about its own longitudinal axis can be provided, for example, in a pivot bearing consisting of a circumferential, in particular rotated, groove and a bolt.

[0039] Alternatively, the retaining element may not be rotatable. This is the case, for example, with a pivot bearing with a hole or a groove that only partially extends around the circumference, for example, a milled groove.

[0040] The holding means can preferably each be formed in one piece.

[0041] Thanks to the one-piece design of the retaining element, stability is particularly high even under high static and dynamic loads. Manufacturing weaknesses such as welded joints, form-fitting, or force-fitting connections are avoided. Furthermore, the retaining elements can be precisely engineered, making them less prone to errors and conserving resources during production and use. Assembly is quick and easy, as precise alignment of the retaining elements is not required.

[0042] However, holding devices consisting of two or more parts are also conceivable.

[0043] A further aspect of the present invention relates to a heel unit for a gliding board binding, in particular a ski touring binding, preferably as described above, which is adjustable between a downhill position and a touring position. In the downhill position, the gliding board binding holds a heel section of a boot. In a touring position, the gliding board binding releases the heel section of the boot. This allows the boot to lift off from the heel unit. The heel unit comprises a base with a base plane and a fastening arrangement for fastening to a gliding board, as well as a binding body which is mounted on the base so as to be rotatable about a vertical axis. Furthermore, the heel unit comprises two holding means for holding a boot in a heel section of the boot. The holding means are movable relative to one another in a plane parallel to the base plane. This allows the distance between the holding means to be changed.The heel unit additionally comprises at least one elastic pre-tensioning element for generating a pre-tensioning force, and at least one transmission mechanism for transmitting the pre-tensioning force to the holding means. The transmission mechanism can be pressed against the two holding means due to the pre-tensioning force generated by the elastic pre-tensioning element in order to pre-tension the two holding means with a holding force at a holding distance. The transmission mechanism has two opposing support surfaces for each holding means. The support surfaces can be moved away from one another against the pre-tensioning force between a holding position and a release position. At least one of the support surfaces has a link for the respective holding means, which link allows a deflection of the holding means when the transmission mechanism moves and in particular when the support surfaces move away from one another into the release position.

[0044] The transmission mechanism can consist of at least a housing and a cover, each with a support surface for the holding means, wherein the housing and the cover enclose the holding means. The housing and the cover can each have a form-locking element that engage with one another, thus defining an assembly. At least one of the two parts of the transmission mechanism is movable relative to the second part.

[0045] The guide rail can be arranged in the downhill direction of the ski along the entire length of the cover. The guide rail can have different guide sections, in particular a front and a rear guide section, which are spaced from one another by a central section. It can therefore be continuous or interrupted in the longitudinal direction of the ski. The guide sections define the common support surface. There does not necessarily have to be a contact surface in the central section. The guide rail can have a circumferential region in a plane perpendicular to the longitudinal axis in the direction of the gliding board transverse axis, which region encompasses the support surface for the holding means. The support surface can be located at a lowest and / or highest area in relation to the gliding board plane. The recesses in the guide rails do not have to be round.The link can widen towards the gliding board's longitudinal axis and / or away from the gliding board's longitudinal axis in the front and / or rear guide section of the link and at least partially form a contact surface for the holding means during a deflection. This enables simple and low-friction movement of the holding means relative to one another or away from one another. The pivot bearing of the holding means is preferably arranged centrally on the longitudinal axis of the holding means, based on the length of the holding means within the transmission mechanism. This enables a symmetrical design of the link. The symmetry simplifies the design and manufacture of the links and saves costs. The widening of the links can be mirrored on a plane perpendicular to the gliding board plane in the direction of the gliding board's longitudinal axis. The widening of the link can also be rotationally symmetrical about a vertical central axis of the link.

[0046] The support surface can be a form-fitting counter-contour for a defined area of ​​the holding device, but it can also be a contact line between a cylinder and a surface.

[0047] In the holding position, the link can positively accommodate the holding means in a circumferential area of ​​the cross-section.

[0048] In this context, "positively locking" means that the guide and the holding means engage with each other over at least 10% of the circumference of the cross-section of the holding means, preferably at least 30% of the circumference of the cross-section of the holding means, and particularly preferably at least 50% of the circumference of the cross-section of the holding means. The guide can be continuous and have a base. A guide for receiving the holding means by means of two individual contact points is also conceivable.

[0049] The positive-locking link and its widening allow for controlled movement of the retaining elements from the holding position. The binding body can have an end stop to limit the deflection of the retaining elements. The end stop can be part of the link.

[0050] The transmission mechanism can be two-part.

[0051] The preload force presses the cover and the housing against each other. Additional components in the transmission mechanism are conceivable.

[0052] Central positioning of the pivot bearing within the transmission mechanism allows for a symmetrical design of the linkage. This reduces construction costs. At the same time, the cover and housing move parallel to each other, allowing even deflection of the retaining elements. Deflection of a single retaining element is not sufficient for safety release. False release due to one-sided loading is avoided. This increases the level of safety for the gliding board rider and enables a sporty riding style. The even distribution of force across the individual binding components also increases the service life of the gliding board binding.

[0053] The elastic pre-tensioning element can be a leaf spring, a coil spring or another spring. It is also conceivable for it to be made of an elastic material. By choosing a suitable elastic pre-tensioning element, the range of the strength of the pre-tension and thus the entry force and release force can be adjusted. The pre-tensioning force should be great enough that the holding means can reliably engage the boot in a downhill position, but can also release with a sufficient force to prevent injury. At the same time, the entry force should not be greater than the body weight. The transmission mechanism and the rest of the binding body can be coupled with a coupling element. The coupling element can be in the form of a screw. The screw has a head at its upper end with which it is supported against the upper edge of the cover.This raises the screw when the cover is lifted. In the same way, the cover is pulled downwards when the screw is moved downwards. After the cover, the screw runs downwards through an opening in the housing. In a preferred embodiment, the screw is fixed in a nut which is anchored in the housing in a rotationally fixed manner. A diameter of the opening in the housing is slightly larger than a diameter of the screw, so that the housing is pulled downwards. Due to the pretension of the coil spring, which is supported at a first end against the nut and at a second end against the cover of the transmission mechanism, the housing is pressed with a force from below upwards against the holding means, while the cover is pulled in the direction of the sliding board plane.

[0054] The trigger value of the described safety release can be adjusted by setting the pre-tension and thus holding force using the coupling element.

[0055] A further aspect of the present invention relates to a heel unit, particularly preferably as described above, which comprises a separate support element which transmits a force from the heel portion of a shoe in the downhill position directly to the gliding board.

[0056] The separate support element is a preferably wide support surface that is connected to the base of the gliding board and the gliding board itself directly and / or indirectly via a brake assembly plate. Alternatively, a support element that can be coupled to the shoe is also conceivable. The support element does not need to have a continuous surface and can be irregularly shaped in height.

[0057] In a preferred embodiment, the boot rests directly on a support element on the gliding board. Resting the boot on the gliding board in the downhill position allows for direct power transfer from the user to the gliding board, thus enabling a sporty and energy-saving riding style.

[0058] The separate support element can be adjusted in height.

[0059] Thanks to the height adjustment, the height can be adapted to the shoe model or to counteract any wear and tear on the shoe sole.

[0060] The height is defined perpendicular to the gliding board plane from the gliding board plane to the highest point of the support surface.

[0061] The support element can be made up of at least two parts, with the upper part being movable relative to the lower part. The two parts can be connected by screws, allowing the overall height of the support element to be adjusted. A gap is formed between the two parts.

[0062] When using conventional screws, the adjustment can be easily performed by the board rider at home. The height of the support element can be adjusted between 5 mm and 30 mm, preferably between 10 mm and 25 mm, and most preferably between 15 mm and 20 mm.

[0063] A further subject of the present invention relates to a heel unit, in particular as described above, wherein a height of the holding means relative to a base plane is selected such that, when the shoe is inserted, the shoe sole is positioned such that it rests on a support surface. The support surface is fixed relative to the gliding board.

[0064] The support surface can be a separate element or part of the gliding board itself. The crucial factor is that the sole of the boot is in direct contact with the gliding board when the boot is inserted into the gliding board binding, allowing the power to be transferred directly. This leads to a better riding feel and increased control over the gliding board.

[0065] The weight of the gliding board binding can be a maximum of 300 g, preferably a maximum of 250 g, particularly preferably a maximum of 220 g. The heel unit has a maximum weight of 200 g, preferably 160 g, particularly preferably 130 g.

[0066] A further object of the present invention relates to a gliding board with a gliding board binding as described above.

[0067] The invention is explained in more detail below with reference to figures which merely represent exemplary embodiments. They show: Figure 1: a side view of a sliding board with a

[0068] Gliding board binding comprising a front unit and a heel unit,

[0069] Figure 2 : a frontal view of the heel unit with rotating

[0070] Binding body according to Figure 1 ,

[0071] Figure 3: a top view of the heel unit according to Figure 2 of a gliding board binding with brake arrangement and pivoting climbing aid,

[0072] Figure 4 : a cross-section in the longitudinal direction of a gliding board through the heel unit according to Figure 2 ,

[0073] Figure 5a : a rear view of the cover of the heel unit according to Figure 4 ,

[0074] Figure 5b : a plan view of the lid according to Figure 5a,

[0075] Figure 5c : a plan view of the housing of the heel unit according to Figure 4 ,

[0076] Figure 6a : a perspective view of the heel unit according to

[0077] Figure 2 with a separate support element, and

[0078] Figure 6b : a perspective view of the heel unit according to

[0079] Figure 6a with an engaged heel portion of a shoe.

[0080] Figure 1 shows a side view of a sliding board 1 with a

[0081] 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 gliding board binding 2 is in a downhill position. The front unit 10 and the heel unit 20 are fastened along a gliding board longitudinal axis L on the ski touring ski 1. A base 11 of the front unit 10 and a base 21 (according to Figure 2) of the heel unit 20 are arranged on the gliding board 1 and serve to mount the 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 opposite side of the gliding surface G of the ski touring ski. A gliding board plane H coincides with the base planes E, F.

[0082] Figure 2 shows a front view of the heel unit 20, in particular for a gliding board binding 2 according to Figure 1. The heel unit 20 is attached to a base 21 on a gliding board 1. The heel unit 20 comprises a binding body 23, which can be adjusted by rotation about an axis VI perpendicular to the base plane F into at least two positions: a downhill position, as shown, and a touring position (see Figure 3).

[0083] The heel unit 20 comprises two holding means 24 which, in a downhill position, can engage a counter-bearing element 52 of a heel section 51 of a shoe 50 (see Figure 6b). The holding means 24 are arranged substantially parallel to one another and to the base plane F and point parallel to the gliding board longitudinal axis L in the direction of the front unit 10 (see Figure 1). The holding means 24 are pretensioned to a holding distance. The holding means 24 are movable relative to one another in a plane parallel to the base plane F, whereby the distance B can be changed.

[0084] The heel unit 20 comprises a climbing aid 30, which is

[0085] Pivot axis S is pivotally mounted on the binding body 23. The pivot axis is aligned at an angle of 48° to the gliding board longitudinal axis L and parallel to the base plane F. The illustrated embodiment of the climbing aid 30 has a pivot arm and can be adjusted into two positions with different predetermined heights by overcoming a pre-tensioning force, depending on the position of the binding body 23.

[0086] Furthermore, the illustrated embodiment of the heel unit 20 has a brake assembly 70, comprising a U-shaped bracket 71 and two brake arms 73. The binding body 23 has a link 76 which, by interacting with a brake assembly plate 72, blocks rotation of the binding body 23 from the downhill position into the touring position when the brake assembly 70 is in the active position. In the illustrated embodiment, the link of the binding body 23 is a partially circumferential projection around the binding body 23, which extends over approximately 65% ​​of the radial circumference of the binding body 23. This link 76 blocks movement of the brake assembly plate 72 and thus of the brake assembly 70 in the touring position, so that it cannot be triggered.

[0087] Figure 3 shows a plan view of the heel unit 20 with the brake arrangement 70 and pivoting climbing aid 30 according to Figure 2. The heel unit 20 has fastening arrangements 22 in the form of screw holes for fastening to a gliding board 1. The heel unit 20 is in a touring position with the binding body 23 in the illustrated position. The holding means 24 point in the direction of the gliding board transverse axis Q. The heel section 51 of the shoe 50 (shown schematically) is released and can lift off. The action of the link 76 on the brake arrangement plate 72 prevents the brake arrangement 70 from being triggered. The brake arms 73 are thus located in the region of the base plane F or at least above the gliding board surface G (see Figure 1).

[0088] Figure 4 shows a cross-section in the longitudinal direction L through the heel unit 20 according to Figure 2. The heel unit 20 is in the downhill position.

[0089] The heel unit 20 comprises a helical spring 63 as an elastic prestressing element which generates a prestressing force. The prestressing force is transmitted to the holding means 24 by a transmission mechanism 60. In the embodiment shown, the transmission mechanism 60 is constructed in two parts, comprising a cover 62 and a housing 61, each with a support surface A. In the holding position shown, the holding means 24 rest on the support surfaces A between the cover 62 and the housing 61. The cover 62 and the housing 61 can be pressed against the two holding means 24 due to the prestressing force generated by the helical spring 63, whereby the holding means 24 are prestressed into the holding distance with a holding force. The support surfaces A can be moved away from one another between a holding position and a release position (not shown).

[0090] The cover 62 and the housing 61 are connected by means of a coupling element, a screw 64. In the illustrated embodiment, the head of the screw 64 is supported against the upper edge of the cover 62 and the other end is fastened to a non-rotatable nut 102 in the housing 61.

[0091] In the downhill position shown, the brake assembly 70 is raised approximately to the height of the base plane F, but at least above the gliding surface G against the base plane F of the ski touring ski 1 (according to Figure 1) and is held in a non-operating position. Figure 5a shows a rear view of the cover 62 according to Figure 4. The cover 62 has a link 65. In a downhill position, the link 65 has a circumferential region 66 in a plane perpendicular to the gliding board longitudinal axis L for the positive reception of a holding means 24 (see Figure 5b) in a holding position. In the illustrated embodiment, the link 65 widens in a rear region 65.3 (see Figure 5b) towards the sliding board longitudinal axis L and allows a deflection of the holding means 24 when the support surfaces A move away from each other into the release position. The support surface A of the link 65 is arranged in the circumferential region 66.The link 65 has a contact surface N, wherein upon deflection of the holding means 24, the holding means 24 comes into contact with the contact surface N.

[0092] In a front area 65.1 (see Figure 5b) the gate 65 widens outwards away from the sliding board longitudinal axis L.

[0093] Figure 5b shows the cover 62 according to Figure 4. The cover is conical parallel to the gliding board plane H and widens in the direction of the front unit 10 (according to Figure 1). The link 65 extends in the direction of the gliding board longitudinal axis L over an entire length M of the cover 62. The link 65 can be divided into three areas along the gliding board longitudinal axis L: the front area 65.1, a central section 65.2, and the rear area 65.3. The front area 65.1 of the link 65 widens away from the gliding board longitudinal axis L, while the rear area 65.3 of the link 65 widens towards the gliding board longitudinal axis L. In the embodiment shown, the link 65 is interrupted in the central area 65.2. The links 65 for the two holding means 24 are mirrored on the gliding board longitudinal axis L. The contact surfaces N of the holding means 24 of the front 65.1 and rear areas 65.3 of the gates 65 are rotationally symmetrical about the vertical axis V6.

[0094] The cover 62 has a form-locking element 67 which can engage with a corresponding form-locking element 68 of the housing 61 (see Figure 5c).

[0095] The holding means 24 (partially shown schematically) are positioned at a distance B from each other in the link 65.

[0096] The holding means 24 are longitudinally secured to a circumferential groove 25 in the central section 65.2 of the holding means 24 by a bolt 26, which is fixed in the housing 61 (see Figure 5c). The bolt 26 also serves as a pivot bearing 27 of the holding means 24, whereby the holding means 24 can be pivoted about an axis V2 / V3 perpendicular to the gliding board plane H (as shown in Figure 1).

[0097] Figure 5c shows a top view of the housing 61 according to Figure 4. The housing 61 has a positive-locking element 68 for positively engaging the positive-locking element 67 of the cover 62 (see Figure 5b). This allows the cover 62 and the housing 61 to be precisely positioned.

[0098] The housing 61 also has a support surface A for the holding means 24 (according to Figure 4).

[0099] In the illustrated embodiment, the housing 61 has an end stop 69 for the defined maximum deflection of the holding means 24 (see Figure 5b). Figure 6a shows a perspective view of the heel unit 20 according to Figure 2 with a separate support element 80. The support element 80 is designed in two parts. Two parts (80.1, 80.2) are connected to each other by means of screws 82. The support element 80 is adjustable in its height h5 by means of screws 82. The support element 80 is not connected to the brake assembly plate 72.

[0100] Figure 6b shows a perspective view of a heel unit 20 according to Figure 6a with an engaged heel portion 51 of a shoe 50 in a downhill position. The shoe 50 is engaged by two retaining means 24 of the heel unit 20 in counter-bearing elements 52 of the heel portion 51 of the shoe 50. A shoe sole 53 rests on the support element 80, which is directly connected to the gliding board 1. A force can thus be applied by a user directly via the shoe sole 53 and the support element 80 to the gliding board 1. A brake assembly plate 72 (see Figure 6a) is pressed down by the heel portion 51 of the shoe 50. The brake arms 73 are raised approximately to the height of the base plane F, but safely above the gliding surface G (according to Figure 1).

Claims

Patent claims 1. Heel unit (20) for a gliding board binding (2), in particular a ski touring binding, wherein the heel unit (20) is adjustable between a downhill position in which it holds a heel portion (51) of a boot (50) and a touring position in which it releases the heel portion (51) of the boot (50) so that the boot (50) can lift off the heel unit (20), wherein the heel unit (20) comprises: - a base (21) with a base plane (F) and a fastening arrangement (22) for attachment to a sliding board (1), - a binding body (23) which is mounted on the base (21) so as to be rotatable about a vertical axis (VI), two holding means (24) for holding a shoe (50) in a heel section (51) of the shoe (50), wherein the holding means (24) are movable relative to one another in a plane parallel to the base plane (F), whereby the distance (B) between the holding means (24) is variable, - at least one elastic prestressing element (63) for generating a prestressing force, and - at least one transmission mechanism (60) for transmitting the prestressing force to the holding means (24), wherein the transmission mechanism (60) can be pressed against the two holding means (24) due to the prestressing force generated by the elastic prestressing element (63) in order to prestress the two holding means (24) with a holding force at a holding distance, characterized in that the transmission mechanism (60) has two mutually opposite support surfaces (A) for each holding means (24), wherein the support surfaces (A) can be pressed against the prestressing force between a holding position and a release position are movable away from each other and wherein at least one of the support surfaces (A) has a link (65) for the respective holding means (24), which allows a deflection of the holding means (24) when the transmission mechanism (60) moves into the release position.

2. Heel unit (20) according to claim 1, wherein the slotted guide (65) in the holding position positively receives the holding means (24) in a circumferential region (66) of the cross section of the holding means (24) and wherein the slotted guide (65) widens towards the sliding board longitudinal axis (L) and / or away from the sliding board longitudinal axis (L).

3. Heel unit (20) according to claim 1 or 2, wherein the transmission mechanism (60) is in two parts.

4. Heel unit (20) for a gliding board binding (2), in particular a ski touring binding, in particular according to one of the preceding claims, wherein the heel unit (20) is adjustable between a downhill position in which it holds a heel portion (51) of a boot (50) and at least one touring position in which it releases the heel portion (51) of the boot (50) so that the boot (50) can lift off the heel unit (20), wherein the heel unit (20) comprises: - a base (21) with a base plane (F) and a fastening arrangement (22) for attachment to a sliding board (1), - a binding body (23) which is mounted on the base (21) so as to be rotatable about a vertical axis (VI), two holding means (24) for holding the shoe (50) in a heel section (51) of the shoe (50), wherein the Holding means (24) are movable relative to one another in a plane parallel to the base plane (F), whereby the distance (B) between the holding means (24) is variable, characterized in that a pivot bearing (27) is formed in a central region of each holding means (24), wherein the holding means (24) are mounted pivotably about a vertical axis (V2, V3) around the pivot bearing (27).

5. Heel unit (20) according to claim 4, wherein the pivot bearing (27) of the holding means (24) is arranged at least 20 length percent, preferably at least 25 length percent based on the length of the holding means (24) from one end of the holding means (24). Heel unit (20) according to claim 4 or 5, wherein the pivot bearing (27) for the holding means (24) is designed as a preferably circumferential groove (25) in the holding means (24).

7. Heel unit (20) according to one of claims 4 to 6, wherein the pivot bearing (27) secures the holding means (24) longitudinally.

8. Heel unit (20) according to one of claims 4 to 7, wherein the holding means (24) are mounted rotatably about their own longitudinal axis.

9. Heel unit (20) according to one of claims 4 to 8, wherein the holding means (24) are each formed in one piece.

10. Heel unit (20) for a sliding board binding (2), in particular a ski touring binding, in particular according to one of the preceding claims, characterized in that the heel unit (20) has a separate support element (80) which, in a downhill position of the heel unit (20), transmits a force from the heel section (51) of a shoe (50) directly to the gliding board (1).

11. Heel unit (20) according to claim 10, wherein the separate support element (80) is adjustable in height.

12. Heel unit (20) according to one of the preceding claims, wherein a height of holding means (24) relative to a base plane (F) is selected such that when the shoe (50) is inserted, a shoe sole (53) rests on a support surface (81) which is fixedly arranged relative to the sliding board (1).

13. Gliding board (1), characterized in that the gliding board (1) has a gliding board binding (2) according to one of claims 1 to 12.

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