EP2431080A1 - Glide board binding, in particular cross-country ski binding - Google Patents

Abstract

The gliding board binding (10) has a front holder unit (24) that is rotatably mounted on a fixed base (22) for holding front portion of a sliding board shoe. The front holder unit and sliding board shoe are rotated by the fixed base around a common rotational axis (V) which is extended vertically to sliding board plane, when the front holder unit is set in closed state.

Description

The present invention relates to a gliding board binding comprising a base adapted for attachment to a gliding board defining a sliding board plane and a front holding means for holding a front portion of a gliding board shoe.

To Gleitbrettbindungen the aforementioned type include in particular touring ski bindings with which a touring ski boot can be held on a touring ski, so that it is pivotable in a walking position about a transversely to the ski axis transverse axis and in a downhill position additionally held by a rear holding device on the heel section. Although reference will be made hereafter primarily to touring ski bindings, the invention is nonetheless applicable to other sliding board bindings, in particular downhill ski bindings, snowboard bindings, snowshoe bindings or splitboard bindings.

Known sliding board bindings have triggering mechanisms which, for example, in the event of a fall when high torque is applied, trigger the sliding board shoe in order to release the shoe and reduce the risk of injury to the person falling. Thus, Mz triggering mechanisms are responsible for releasing the sliding board shoe when a lateral force, equal to or greater than a counterforce corresponding to a predetermined Mz release torque of the binding, is exerted by the sliding board shoe on binding. For some bindings, the Mz release torque may be adjusted by an adjustment of the binding to a value adapted to the weight and style of the user.

Since the sliding board shoe in the down position of the sliding board binding is usually held both in the front area of the shoe and in the heel area by a respective front and rear holding means of the sliding board binding, conventionally, a release mechanism must be provided for both the front holding device and the rear holding device become. Furthermore, since front and rear holding devices are structurally very different from one another and thus also different triggering mechanisms are provided, the tripping characteristics, in particular the tripping threshold values and the force curves during tripping, are significantly different for front and rear holding devices. This leads in practice to the fact that the triggering behavior of the sliding board shoe as a whole is relatively difficult to predict, since it is based on a combined triggering operation of two separate holding devices. Accordingly, to ensure reliable deployment in the event of a fall, the triggering thresholds of the restraints tend to be set to lower values, which, in turn, results in the sliding board binding occasionally tripping too early. This has the further disadvantage that undesirable false triggering can occur, especially in more sporty driving (for example in the racing sector) during demanding driving maneuvers.

Object of the present invention is therefore to provide a Gleitbrettbindung of the aforementioned type, which has a simple structure, a well-defined and reliable tripping behavior shows, and is particularly suitable for a sporty driving.

This object is achieved by a Gleitbrettbindung of the aforementioned type, in which the front holding means is rotatably mounted on the base to rotate in a closed state of the front holding device rotation of both the front holding device and the Gleitbrettschuhs to a common, substantially orthogonal Sliding board plane extending vertical axis of rotation enable.

As a result of the rotatable mounting of the front holding device according to the invention on the base fixed on the sliding board, the sliding board shoe can rotate about the common vertical axis of rotation together with the front holding device in the closed position of the front holding device, without the front holding device being triggered. In other words, during the rotation of the front holding device about the vertical axis of rotation, the sliding board shoe remains firmly in holding engagement with the front holding device.

If the sliding board binding also has a rear holding device for holding a rear section (heel section) of a sliding board shoe, it can be achieved by a rotatable mounting of the front holding device that rotational movement of the sliding board shoe about a vertical axis is primarily, in particular substantially exclusively, effected by either Rear holding device or the front holding device can be controlled. This means, in particular, that the release behavior of the sliding board shoe with respect to an Mz release can be controlled decisively by the Mz release mechanism of the front or the rear holding device and thus the triggering characteristics are well defined, so that the binding triggers reliably and at the same time an unwanted, too early triggering can be avoided. Thus, the binding is particularly suitable for sporty driving, e.g. in racing, advantageous use.

If, for example, a high torque acts on a vertical axis in the event of a fall on the sliding board shoe, initially only the rear holding device can be triggered while the front part of the sliding board shoe remains held in the front holding device and, together with the front holding device, the rotation about the vertical Axle participates. If the rear area of the sliding board shoe is released from the rear holding device, then a triggering can then take place the front holding device done. Alternatively, the sliding board shoe with the front holding device could rotate more or less freely around the vertical axis of rotation without the shoe coming off the front holding device, or triggering on an axis other than the Z axis only when a high torque occurs.

In a preferred embodiment of the invention, the vertical axis of rotation of the front holding device around which the front holding device is rotatably mounted on the base, by a portion in which in the closed state of the holding means a sliding board shoe, in particular a bale portion of a sliding board shoe is arranged. In such a construction, the front holder and the base are connected to each other in the vicinity of the sliding board shoe, particularly near a front portion of the sliding board shoe so that the connecting portion also lies in the vicinity of the engagement between the front holder and the gliding board shoe and thus the front Holding device can be made relatively compact overall.

In effect, the front support may be mounted to the base so as to be freely rotatable with respect to the base, ie, to be substantially rotatable without a resistive force exceeding the normal mechanical friction forces. To close a rear holding device of the Gleitbrettbindung when getting into the Gleitbrettbindung the user pivots (before or after getting into the front holding device) the front holding device in a central normal position in which the sliding board shoe is aligned in the longitudinal direction of the sliding board. In order to facilitate the boarding in the binding board, however, in a preferred embodiment of the invention, a clamping device may be provided which biases the front holding device with respect to its rotational position about the vertical axis of rotation in a central normal position, from which the front holding device against an elastic clamping torque the clamping device is pivotable in both directions. In such an embodiment, the front raises Holding device in the open position of the Gleitbrettbindung automatically in the central normal position, so that the user can get into the binding immediately.

The provision of a tensioning device of the aforementioned type can also be used to realize a safety function when a high side load of the connection between the sliding board shoe and the sliding board binding occurs. Thus, in a fall, the absorption of lateral forces in the event that the clamping force of the tensioning device is greater than a Mz-triggering torque of the rear holding device corresponding counterforce, or in the event that no rear holding device is provided, authoritative or even exclusively controlled by the construction of the tensioning device of the front holding device. Upon reaching or exceeding the clamping force of the tensioning device, the sliding board shoe rotates together with the front holding device about the common vertical axis of rotation to yield to the excessive load (for example, in a fall) and reduce the risk of injury. Further, in order to further increase the safety of the slide board binding in this case, the front holder may be configured to release the holding engagement between the front holder and the gliding board shoe after the front holder and the gliding board shoe are rotated by a predetermined angle about the common vertical axis of rotation so that the sliding board shoe can then be completely detached from the Gleitbrettbindung.

If, in contrast, the Mz triggering, as already mentioned above, is controlled by a rear holding device, the triggering force to be exerted on a shoe (in particular on a reference section of the shoe) in the lateral direction is preferably for lateral release of the rear holding device corresponding to a Mz triggering torque the rear holding device is greater than a force to be exerted on the shoe (in particular on the reference section of the shoe) in the lateral direction for rotating the front holding device about the vertical axis of rotation, ie in particular greater than any frictional forces of the rotary joint and possibly greater than a force necessary to overcome the clamping force of the clamping device. Preferably, the triggering force of the rear retaining device is then at least four times the force to be exerted on the shoe in the lateral direction for rotating the front holding device, whereby the influence of the rotational resistance of the front holding device on the total Mz-triggering characteristic of the Gleitbrettbindung is relatively small and preferably negligible so that the board binding triggers in a very well-defined and particularly reliable manner and false tripping can be avoided very safe.

In a further preferred embodiment of the invention, the angle of rotation of the front holding device may be limited by the vertical axis of rotation by at least one rotation limiting means. By such a rotation limiting means, a mechanism can be provided in a constructively surprisingly simple manner, which can contribute to the fact that following the common rotation of the front holding device and the Gleitbrettschuhs about the vertical axis of the sliding board shoe completely detached from the Gleitbrettbindung. If a high torque acts on the sliding board shoe, for example during a fall, about a vertical axis, first the front holding device rotates together with the sliding board shoe about the vertical axis of rotation until reaching the maximum angle of rotation predetermined by the rotation limiting means. The rotational movement is then stopped by the rotation limiting means, wherein the continuous, applied by the sliding board shoe torque and the moment of inertia of the Gleitbrettschuhs and the user at the moment of braking the Gleitbrettschuhs by the rotation limiting means a relatively high load on the holding engagement between the front holder and the sliding board shoe acts. This holding engagement can then, for example, in a conventional manner by a Mz-triggering mechanism of front holding device are released to decouple the sliding board shoe from the front holding device.

The total of the rotation angle limited by the at least one rotation limiting means may be between about 10 degrees (from a central normal position about 5 degrees to both sides) and about 30 degrees (from a central normal position about 15 degrees to both sides), the lower limit of About 10 degrees allows the joint rotation of the sliding board shoe and the front holder to be stopped only when the rear portion of the shoe board is securely released from a rear holder, and the upper limit of about 30 degrees can ensure that the maximum angle of rotation is achieved relatively quickly to allow complete decoupling between Gleitbrettbindung and sliding board shoe reliable. Particularly preferred is a predetermined by the at least one rotation limiting means rotation angle range of about 20 degrees, with which the best test results have been achieved and false triggering can be largely prevented.

Further, when the sliding board binding of the present invention has the above-mentioned rotation limiting means, the front holding means has an Mz triggering mechanism for releasing (decoupling) the sliding board shoe from the front holding means when lateral force is applied from the sliding board shoe to the front holding means, which is equal to or greater than a counterforce corresponding to a predetermined Mz release torque of the front support means, the sliding board binding may be arranged in a particularly preferred construction for a two-stage release of the sliding board shoe, in a first stage triggers the rear support and the rear portion of the sliding board shoe, wherein the sliding board shoe rotates together with the front holding means about the common vertical axis of rotation, and in a subsequent second stage, the common rotation of the sliding board shoe and the front holding device is stopped by the rotation limiting means and the front holding device is triggered to release the front portion of the sliding board shoe. The release of the shoe on the rear and on the front holding device thus take place separately in time, so that the triggering behavior of the two holding devices do not overlap and the triggering can be better controlled constructively.

Preferably, the gliding board binding is a touring binding (for a touring ski or a splitboard), wherein the front retaining device is adapted to pivotally receive a touring ski boot in a walking position of the gliding board binding about a sliding board transverse axis parallel to the gliding board plane and transverse to a gliding board longitudinal axis. The advantages of the invention are particularly evident in a touring binding, since tour bindings for enabling said walking position must have a special design in the area of the front holding device, which makes it more difficult to provide a triggering mechanism on the front holding device. In particular, the front holding device must on the one hand support the touring ski boot in a pivotable manner and on the other hold with a relatively high holding force in order to prevent a premature release in the region of the front holding device. The rotatable with respect to the base holding device according to the invention can then be used in particular in combination with a rear holding device to control the Mz release substantially only by the rear holding means, thus relieving the front holding device on the descent and also at sporty driving to prevent a false trip.

Since in a touring binding in the walking position of the binding, the rear portion of the sliding board shoe is not held by the rear holding device on the ski, a touring binding of the type according to the invention preferably further comprise means which in the walking position of Tour binding to block a rotation of the front holding device about the vertical axis of rotation or at least hinder. Such means can be provided for example by an already mentioned clamping device which biases the front holding device in the central normal position. However, to improve the reliability and stability of the touring binding in the walking position trained as a tour binding Gleitbrettbindung may alternatively or additionally comprise at least one blocking means which blocks in the walking position of the Gleitbrettbindung rotation of the front holding means about the vertical axis of rotation and in a down position of Gleitbrettstellung a rotation the front holding device allows about the vertical axis of rotation. The sliding board binding can thus have the usual lateral stability in the walking position, while in the downhill position the advantages according to the invention with respect to the rotatable holding device are provided.

In a structurally particularly effective implementation of such a blocking agent is thought that the front holding device has a locking lever which is placed or adjustable in the walking position of the Gleitbrettbindung in a locking position in which it prevents or makes it difficult to trigger the front holding device at least one blocking means comprises a slide-fixed stop, which cooperates in the walking position of the sliding board binding with the locking lever. A locking lever of the type mentioned in itself is already used in known touring bindings can take advantage in the embodiment described above double function to lock the trigger mechanism of the front holding device in the walking position on the one hand and to block an unwanted rotation of the front holding device in the walking position on the other hand. Alternatively, another adjusting element of the sliding board binding, which is moved to adjust the walking position, could cooperate in the walking position with the blocking means to prevent a twisting of the front Holding device to block.

In a further preferred embodiment of the invention, the front holding device of the sliding board binding designed as a touring binding can have two bearing journals arranged on the sliding board transverse axis, which are arranged to engage opposite lateral bearing holes of a sliding board shoe. Thus, the sliding board binding according to the invention can be adapted to the use of a common type of touring ski boots with opposite lateral bearing holes and thus be used in particular with conventional touring ski boots of this type.

In the described front holding device with bearing pin can also be provided that the bearing pins are movable between a closed position in which the bearing pins have a distance from each other, which is designed for engagement in the bearing holes of a sliding board shoe, and an open position in which the bearing pin have a distance greater than in the closed position, so that the sliding board shoe between the bearing pin can be inserted or removed from the front holding device, wherein the Gleitbrettbindung further comprises a Schließbetätigungsabschnitt whose operation causes a movement of the bearing pin between the open position and the closed position , In this way, in a manner known per se from the prior art, a mechanism for opening or closing the front holding device is provided, which allows easy operation of the board connection for boarding or alighting. At the same time, the movable arrangement of the bearing pins can be biased with an elastic means in the closed position, so that in a simple manner, an Mz-triggering mechanism is realized on the front holding device, the complete decoupling of the Gleitbrettschuhs of the Gleitbrettbindung after the common rotation of the front holding device and the sliding board shoe allows. The movable bracket of bearing journals, which Closing operation portion and the mentioned Mz-triggering mechanism may be of a per se known construction (see, for example EP 0 199 098 A2 ).

If the sliding board binding is designed as a touring binding in which the sliding board shoe is held pivotably on the front holding device about the sliding board transverse axis, then in another embodiment of the invention the vertical axis of rotation about which the front holding device and the sliding board shoe can be pivoted together with respect to the sliding board, essentially cut the sliding board transverse axis. Such a construction allows the symmetrical arrangement of the bearing of the front holding device with respect to the vertical axis of rotation and the sliding board transverse axis and thus enables a stable and compact construction of the front holding device.

Figur 1

eine Seitenansicht eines Tourenskischuhs und einer Tourenskibindung gemäß einem Ausführungsbeispiel der vorliegenden Erfindung,

Figuren 2a bis 2c

eine Seitenansicht, eine Vorderansicht sowie eine Draufsicht der Tourenskibindung des Ausführungsbeispiels der vorliegenden Erfindung in einer Öffnungsstellung,

Figuren 2d und 2e

perspektivische Ansichten der Tourenskibindung des Ausführungsbeispiels in der Öffnungsstellung;

Figuren 3a und 3b

eine Draufsicht und eine perspektivische Ansicht der Tourenskibindung des Ausführungsbeispiels in einer Abfahrtsstellung,

Figuren 4a - 4c

eine Draufsicht, eine perspektivische Ansicht sowie eine Ausschnittsvergrößerung der Tourenskibindungen des Ausführungsbeispiels in einer teilausgelösten Abfahrtsstellung, und

Figuren 5a - 5c

eine Seitenansicht, eine perspektivische Ansicht sowie eine Ausschnittsvergrößerung der Tourenskibindung des Ausführungsbeispiels in einer Gehstellung.

The invention will be explained in more detail below with reference to a preferred embodiment with reference to the accompanying drawings. Show it:

FIG. 1

a side view of a touring ski boot and touring ski binding according to an embodiment of the present invention,

FIGS. 2a to 2c

a side view, a front view and a top view of the touring ski binding of the embodiment of the present invention in an open position,

Figures 2d and 2e

perspective views of the touring ski binding of the embodiment in the open position;

FIGS. 3a and 3b

a plan view and a perspective view of the touring ski binding of the embodiment in a Downhill position,

FIGS. 4a-4c

a plan view, a perspective view and an enlarged detail of the touring ski bindings of the embodiment in a partially triggered downhill position, and

FIGS. 5a-5c

a side view, a perspective view and an enlarged detail of the touring ski binding of the embodiment in a walking position.

In FIG. 1 is generally designated 10 a touring ski binding, which is adapted for coupling a touring ski boot 12 on a touring ski 14. The touring ski binding 10 includes a front unit 16 for holding a front portion 18 of the shoe 12 and a heel unit 19 for holding a rear portion or heel portion 20 of the shoe 12.

Later described in more detail fastening means of touring ski binding 10, in particular the front unit 16, define a horizontal Skiebene E of the ski 14 on which the touring ski binding 10 is to be fixed, an X-direction in the plane E in the forward direction along the longitudinal axis of the ski 14th , a Y-direction in the skiebene E and orthogonal to the X-direction and a Z-direction orthogonal to the skiebene E running upward. When location and directional indications such as "top", "bottom", "sideways", "forward", "rear", "horizontal", "vertical" are used in the present disclosure, these references refer to a gliding board tie in FIG mounted state on a sliding board that rests on a flat, horizontal surface.

The ski binding 10 of the embodiment is in an open position ( FIGS. 2a-2e ) adjustable, in which the shoe 12 is detached from the front unit 16 and the heel unit 19 and thus not is held by the touring ski binding 10, however, the touring ski binding 10 is prepared to receive the shoe 12 so that the user can enter the binding 10. The touring ski binding is also in a downhill position ( Figures 3a, 3b, 4a to 4c ) in which the front unit 16 holds the front portion 18 of the shoe 12 and the heel unit 19 holds the heel portion 20 of the shoe 12, so that the shoe 12 is fixed in its entirety to the ski 14 and ready for a downhill. Further, the touring ski binding 10 is adjustable in a walking position in which the heel unit 19 releases the heel portion 20 of the shoe 12, the front unit 16, however, the front portion 18 of the shoe 12 is pivotable about a parallel to the Y-direction Skiquerachse Q, so that the shoe 12 can tilt forward to facilitate forward walking (particularly using climbing skins adhered to the tread of the skis 14).

The construction of the front unit 16 of the touring ski binding 10 will be described below with reference to FIGS FIGS. 2a to 2e explained in more detail. The front unit 16 includes a base 22 to be fixed to the ski 14 and a front support 24 rotatably supported thereon, wherein a vertical axis of rotation V of the rotatable connection between the front support 24 and base 22 is parallel to the Z direction and approximately through a front ball of the foot portion Ski boot 12 runs. For attachment of the base 22 to the ski 14, the base 22 has a fastening arrangement, which may be formed from a plurality of fastening holes 26, are guided by the fastening screws 28.

The front support means 24 comprises a base body 30 and, attached thereto, clamping brackets 32 for holding and pivotally supporting the touring ski boot 12 and a binding actuation mechanism 34 for operating the front support means 24 between open position, downhill position and walking position. The clamping brackets 32 and the binding actuating mechanism 34 can with regard to their principle be constructive structure and in terms of their function of a known type, for example according to the disclosure of EP 0 199 098 A2 to which reference is hereby additionally made in relation to these elements known per se.

Integrally formed on the base body 30 or attached thereto are left and right bearing portions 36, which hold the clamping angle 32 each pivotable about a pivot axis 38 extending in the X direction. Each clamping bracket 32 has a first arm 40 extending substantially upwardly from the pivot axis 38 and a second arm 42 extending substantially from the pivot axis 38 toward the center of the ski. At an upper distal end of the first arm 40, there is respectively disposed a journal 44 whose tip is substantially inward, i.e. toward the center of the ski. The bearing pin 44 is adapted to engage in a lateral bearing opening of the front portion 18 of the touring ski boot 12, to keep the shoe 12 in the walking position of the touring ski binding 10 about the Skiquerachse Q pivotally mounted on the touring ski binding 10.

The ski center-facing distal ends of the second arms 42 of the clamping bracket 32 are gripped together by a fork-like end portion 46 of an actuating lever 48 of the binding actuating mechanism 34 which is pivotally mounted about a pivot axis extending in the Y direction 50 on a base 30 formed on the bearing portion. Specifically, in the exemplary embodiment, the fork-like end portion 46 engages one end cap 52 of each clamping bracket 32 which is slidably slidable onto pins 54 protruding from the second arm 42 of each clamping bracket 32 so that each of the end caps 52 slides along the pins 54 in the Y direction can. By means of compression springs 56 wound around the pins 54, the end caps 54 are biased towards the center of the ski and thus towards one another and are pressed into contact with one another.

In known manner, a pivoting movement of the actuating lever 48 about the pivot axis 50 leads to a vertical Movement of the two end caps 52 and thus to a pivoting movement of the clamping bracket 32 about the pivot axes 38th

At a distal end of the fork-like end portion 46 facing away from the arm 58 of the actuating lever 48 a two-armed control lever 62 is pivotally supported on a pivot axis 60 extending in the Y direction. The operating lever 62 has an operating portion 64 which is operable by hand or by means of a ski pole (e.g., via a ski pole receiving trough 66) to move the binding between open position and downhill position. Further, the operating lever 62 comprises a locking portion 68 facing away from the operating portion 64, which is adapted for a pivotal movement of the operating lever 62 with a cam surface 70 (formed on an upper side of the main body 30, the front holding device 24, the ski 14 or a skifesten part) to come into contact to force or block an upward or downward movement of the arm 58 of the actuating lever 48 corresponding to the surface contour of the cam surface 70 and thus to control the pivotal movement of the actuating lever 48 and thus the pivoting movement of the clamping bracket 32.

As already mentioned, the front holder 24, including the base body 30, the clamping brackets 32 and the binding operation mechanism 34 held thereon, is pivotally supported on the base 22 so that these elements can rotate together about the vertical axis of rotation V. For this purpose, a pivot bearing between the base body 30 of the front holding device 24 and the base 22 is provided. In the exemplary embodiment, the pivot bearing comprises a circular recess on the base body 30, in which a circular projection 72 of the base 22 engages fitting. In particular, the main body 30 may be formed generally annular and with its inner bearing surface 74 a complementary outer bearing surface 76 of the circular projection 72 of the base 22 rotate. The camp formed in this way between Base 30 and base 22 may be a plain bearing. Alternatively, the use of rolling elements between base body 30 and base 22 would be conceivable, so that a roller bearing is realized.

In the exemplary embodiment, the fastening holes 26 for fastening the base 22 to the ski 14 are formed in the circular projection 72 of the base 22. In particular, the outer bearing surface 76 of the projection 22 rotates the arrangement of the mounting holes 26 substantially concentric to ensure a symmetrical force application. To hold the front support 24 to the base 22 so as to be rotatable relative to it about the vertical axis of rotation V, but can not be withdrawn upwardly from the base 22, the inner bearing surface 74 of the body 30 and the outer bearing surface 76 are of the projection 72 is preferably shaped such that a separation of the base body 30 from the base 22 is positively prevented. In the exemplary embodiment, the outer bearing surface 76 of the projection 72 of the base 22 has a conical bevel in the form of an undercut with increasing towards the outside diameter and the inner bearing surface 74 of the base body 30 has a corresponding tapered bevel with decreasing towards the inside diameter. Other form-fitting interlocking annular surface profiles are also conceivable for the surfaces 72, 74.

In order to facilitate the manufacture and assembly of the touring ski binding, the projection 72 of the base 22 is provided as a separate disk in the exemplary embodiment, which is inserted into the inner annular surface 74 of the main body 30 after the base body 30 has been placed on the base 22. The fastening screws 26 are then used at the same time to mount the pivot bearing formed from the projection 72, base body 30 and base 22 and the attachment of the front unit 16 on the ski 14th

The front unit 16 preferably further comprises a rotation angle limiting arrangement 78 to the rotation angle of the front holding device 24 with respect to the base 22 to limit the vertical axis of rotation V to a predetermined maximum angle of rotation. In the exemplary embodiment, the rotation angle limiting arrangement 78 comprises a stop 80, which is guided in a slot 82, so that the maximum rotation angle is determined by the contact of the stopper 80 with the opposite ends of the slot 82. As shown in the figures, the stopper 80 may be formed as a projection on the base 22 and engage in a corresponding slot 82 on the base body 30.

Between the stop 80 and the opposite ends of the slot 82 respectively compression springs 84 are used, which are supported on the one hand stop 80 and on the other hand at the corresponding ends of the slot 82. The arrangement of the compression springs 84 is arranged such that the stopper 80 is urged in an unloaded position to its central position approximately at the center of the slot 82 and is deflectable from this central position in both directions by overcoming a spring force. In order to utilize the entire length of the oblong hole for the rotational movement, the compression springs 84 can be arranged in blind holes of the main body 30 and / or the abutment 80, otherwise the maximum angle of rotation is determined by the dimension of the respectively compressed compression spring 84 in the maximum compressed state. Alternative means for centering the rotational position of the front holding device 24, for example using a cam-cam follower arrangement, are conceivable.

The rotational movement of the front holding device 24 can be further influenced by a blocking means, which is realized in the embodiment by a left and a right blocking projection 26r, 26l. The blocking projections 86r, 86l are preferably arranged on the base 22 and protrude in the embodiment on both sides of the cam surface 70 upwards. The distance between the blocking projections 86r, 86l is dimensioned so that the locking portion 68 of the operating lever 62, when it is pushed onto the cam surface 70, between the Blocking projections 86r, 861 einschiebt fitting so that it can not move in the lateral direction substantially and thus in the walking position, the rotation of the front support means 24 about the vertical axis of rotation V is blockable.

The operation of the touring ski binding of the embodiment illustrated in the figures will be explained in more detail with reference to the drawings.

In the open position of the touring ski binding 10, the actuating lever 48 is pivoted so that the fork-like end portion 46 is raised and the clamping bracket 32 are folded outwardly so that a ski boot 12 can be inserted with a front portion 18 between the bearing pin 44 until the Bearing 44 opposite the lateral bearing openings of the ski boot 12. With the sole of the shoe 12, the user then exerts light pressure on the top of the fork-like end portion 46 to push it downwards until the second arms 42 of the clamping levers 32 are approximately aligned (dead center of the clamping angle biased by the compression springs 56) 32), so that the clamping bracket 32 then selbstätig snap into the closed position and the bearing pin 44 penetrate into the bearing openings of the ski boot 12.

To achieve the downhill position, the heel unit 19 is then coupled to the heel portion 20 of the ski boot, with a itself, for example, from the EP 0 199 098 A2 known and not described in more detail below coupling mechanism can be used. In particular, two pins 88 projecting forward from the heel unit 19 in the X direction can engage in two corresponding recesses on the heel portion 20 of the ski boot 12. Alternatively, other coupling mechanisms between the heel unit and the shoe, which are known per se, for example from the field of pure alpine bindings, are conceivable. After the shoe 12 in the front portion 18 and the heel section 20 is docked, the downhill position is reached and the equipment can be used for a downhill run.

If a particularly high load acts on the touring ski binding 10, for example in the event of a fall, then it is desirable for the ski binding to give way to this load to a certain extent in order to reduce the risk of injury to the user. For this, the heel unit 19 may comprise a per se known Mz-triggering mechanism, which is adapted, upon application of a lateral force on the shoe 12, which is greater than a predetermined Mz-triggering torque of the heel unit 19 corresponding counterforce, the coupling engagement between the heel unit 19th and the rear portion 20 of the shoe 12 to release, so that the shoe 12 can release laterally. Is the heel unit 19 of which from the EP 0 199 098 A2 known type, the heel unit 19 comprises a first part 90 fixed to the ski 14 and a second part 92 rotatably supported about a pivot axis V 'extending in the Z direction and on which the pins 88 are also arranged. The rotation of the second member 92 is controlled by a spring biased cam-cam follower mechanism such that the second member is biased to a central rotational position in which the pins 88 are angled forward in the X direction and from both to the central position Directions is rotatable only by overcoming a predetermined Mz-triggering torque. The size of this Mz release torque is adjustable by adjusting a biasing force of a compression spring 94 by means of a set screw 96.

In the fall initiation, the heel unit 19 releases the heel portion 20 of the ski boot 12 by the above-described Mz triggering mechanism or another triggering mechanism known per se for heel units, so that the shoe 12 moves laterally out of the normal position parallel to the X direction. In this case also acts in the front portion 18 of the shoe 12, a torque about an axis extending in the Z direction, wherein the torque on the closed clamping angle 32 is transmitted to the base body 30. Since the opposite by the compression springs 84 a rotation of the base body 30 force is relatively small compared to the force required for lateral release of the heel unit 19, the base body 30 rotates upon release of the heel portion 20 of the shoe 12 about the vertical axis of rotation V relative to the base 22 bis to the in FIGS. 4a to 4c shown position.

By the length of the slot 82, the possible rotation angle of the central normal position to each of the two rotation stops (ends of the slot) in the exemplary embodiment at angles to about 10 ° set (corresponds to a maximum angle of rotation of 20 °), wherein the rotation of the body 30 is suddenly stopped by each of the rotation stops of the rotation angle limiting means 78. At this time acts on the clamping bracket 32 due to the moment of inertia of the further rotating shoe 12, a relatively high load, which causes the bearing pins 44 are urged in a conventional manner from the bearing openings of the shoe 12 out. For this purpose, the clamping bracket 32 pivot against the resistance of the compression springs 56 a distance outwards until the bearing pins 44 completely emerge from the bearing openings and the front portion of the shoe 12 is completely decoupled from the front support means 24.

The complete decoupling of the ski boot 12 from the touring ski binding 10 thus takes place in two stages according to this embodiment, wherein in the first stage the shoe 12 and the front holding device 24 pivot about the common vertical axis of rotation V until the heel unit 19 is triggered, and wherein in the second stage after reaching the predetermined by the rotational angle limiting means 78 maximum rotational position and the retaining engagement between the bearing pin 44 and the front portion 18 of the shoe 12 is released. Until reaching the maximum rotational position (in the exemplary embodiment 10 ° starting from the central normal position) remains the front portion 18 of the shoe 12th but unchanged and completely in holding engagement with the front holding device 24th

If the shoe 12 is released from the touring ski binding 10 or the touring ski binding 10 is in the unloaded open position, the tensioning device formed by the compression springs 84 causes the adjustment of the front holding device 24 in the central normal position, so that for entering the binding of the shoe 12th to align in the X direction.

If the touring ski binding 10 is adjusted to the walking position, in which the heel unit 19 releases the heel section 20 of the shoe 12, then the front retaining device can additionally be locked by the locking lever 62. For this purpose, the operating lever 62 is pulled upwards at its operating section 64 such that the locking section 68 slides onto the cam surface 70 and thus the locking section 68 is arranged in the lever movement path of the actuating lever 48. Thus, a movement of the operating lever 48 is blocked in the open position, so that the clamping lever 32 can not tilt in the direction of the open position and unwanted triggering of the front holding device is prevented when walking.

In the exemplary embodiment, during the adjustment of the operating lever 62 into the locking position, the locking section 68 slides not only on the cam surface 70 but also between the blocking projections 86r, 861 so that lateral movement of the operating lever 62 is prevented in the locked position. As the blocking protrusions 86r, 86l are mounted, eg, formed on the base 22, they not only block the operating lever 62 but substantially block any rotation of the front support 24 with respect to the base 22. Thus, the touring ski binding 10 is in the walking position be used essentially in the known function and with the desired stability. Once the operating lever 62 is pivoted back to the down position, the coupling between the locking portion 68 and the Blocking projections 68r, 681 lifted and the front holder 24 may rotate about the base 22 in the manner according to the invention.

Claims (14)

A sliding board tie (10) comprising a base (22) adapted for attachment to a gliding board (14) defining a sliding board plane (E) and a front retaining means (24) for holding a front portion (18) of a gliding board shoe (12) .
characterized in that the front support means (24) is rotatably mounted on the base (22) to rotate both the front support means (24) and the sliding board shoe (12) about a common, in a closed state of the front support means (24) to allow substantially orthogonal to the sliding board plane (E) extending vertical axis of rotation (V). Gliding board binding (10) according to claim 1, characterized in that the vertical axis of rotation (V) of the front holding device (24) passes through a portion in which in the closed state of the holding device (24) a sliding board shoe (12), in particular a bale portion of a sliding board shoe (12 ) is arranged. A gliding board binding (10) according to claim 1 or claim 2, further characterized by tensioning means (84) biasing the front support means (24) with respect to their rotational position about the vertical axis of rotation (V) to a central normal position from which the front support means (84). 24) against an elastic clamping torque of the clamping device (84) is pivotable in both directions of rotation. A gliding board binding (10) according to any one of the preceding claims, further characterized by a rear retaining means (19) for holding a back portion (20) of a gliding board shoe (12), said rear retaining means (19) having an Mz tripping mechanism for sliding the gliding board shoe (12). 12) from the rear holding means (19) when released from the sliding board shoe (12) on the rear holding means (19) a lateral force is applied which is equal to or greater than a counterforce corresponding to a predetermined Mz release torque of the rear holding device (19). The board engaging board (10) according to claim 4, characterized in that the release force to be exerted on a shoe (12) in the lateral direction for laterally releasing the rear support (19) corresponding to a Mz release torque of the rear support (19) is greater than one on the Shoe (12) force to be exerted in the lateral direction for rotating the front holding device (24) about the vertical axis of rotation (V), preferably at least four times. Gliding board binding (10) according to one of the preceding claims, characterized in that the angle of rotation of the front holding device about the vertical axis of rotation (V) by at least one rotation limiting means (78) is limited. A gliding board binding (10) according to claim 6, characterized in that the rotational angle limited by the at least one rotation limiting means (78) is between about 10 degrees and about 30 degrees, preferably about 20 degrees. The gliding board binding (10) according to claim 4 and any one of claims 6 and 7, characterized in that the front retaining means comprises an Mz triggering mechanism for releasing the gliding board shoe (12) from the front retaining means (24) when sliding away from the gliding board shoe (12 ) is exerted on the front holding device (24) in a lateral direction which is equal to or greater than a counterforce corresponding to a predetermined Mz release torque of the front holding device (24),
such that the sliding board binding (10) is set up for a two-stage release of the sliding board shoe (12), in which - In a first stage, the rear holding device (19) triggers and the rear portion (20) of the sliding board shoe (12) releases, the sliding board shoe (12) together with the front holding means (24) about the common vertical axis of rotation (V) rotates, and - In a subsequent second stage, the common rotation of the Gleitbrettschuhs (12) and the front holding means (24) is stopped by the rotation limiting means and the front holding means (24) triggers to release the front portion (18) of the Gleitbrettschuhs (12). The gliding board binding (10) according to one of the preceding claims, characterized in that the gliding board binding (10) is a touring binding, wherein the front holding device (24) is adapted to a Gleitbrettschuh (12) in a walking position of the Gleitbrettbindung (10) to a for Slide board plane (E) parallel and transverse to a Gleitbrettlängsachse (X) extending Gleitbrettquerachse (Q) to keep pivoting. The gliding board binding (10) of claim 9 further characterized by at least one blocking means (86r, 86l) which, in the walking position of the gliding board binding (10), blocks rotation of the front support (24) about the vertical axis of rotation (V) and in a downhill position of the gliding board binding (10) allows rotation of the front holding device (24) about the vertical axis of rotation (V). Gliding board binding (10) according to claim 10, characterized in that the front holding device (24) has a locking lever (62) which is placed or adjustable in the walking position of the Gleitbrettbindung (10) in a locking position, in which he triggers the front holding device (24) prevents, and
in that the at least one blocking means (86r, 86l) comprises a slide-board-fixed stop which cooperates with the locking lever (62) in the walking position of the sliding-board binding (10). The sliding board binding (10) according to any one of claims 9 to 11, characterized in that the front holding device (24) has two bearing pins (44) arranged on the sliding board transverse axis (Q), which are arranged to have opposite lateral bearing holes of a sliding board shoe (12) To take action. The gliding board binding (10) according to claim 12, characterized in that the trunnions (44) are movable between a closed position in which the trunnions (44) are spaced from each other for engagement in the bearing holes of a gliding board shoe (12). and an open position in which the trunnions (44) are spaced greater than in the closed position such that the gliding board shoe (12) can be inserted between the trunnions (44) or removed from the front support (24).
wherein the sliding board tie (10) further comprises a binding operation portion (34) the operation of which causes movement of the bearing journals (44) between the open position and the closed position. Gliding board binding (10) according to any one of claims 9 to 13, characterized in that the vertical axis of rotation (V) of the front holding device (24) substantially intersects the Gleitbrettquerachse (Q).

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