EP2570160B1 - Heel unit for a touring binding - Google Patents

Description

The present invention relates to a heel unit for touring binding of a gliding board comprising a binding body to which two coupling protrusions are movably held for coupling to a heel portion of a touring boot.

Heel units of this type have found particularly widespread use in touring skiing to fix the heel of a touring shoe on a sliding board (touring skis, splitboard or the like) by the coupling projections formed at the front ends of two coupling pins engage into corresponding recesses on the heel of the ski boot.

EP 2 345 463 A1 discloses a heel unit containing all the features of the preamble of claim 1.

Examples of heel units of the above-mentioned type are disclosed in U.S.P. EP 0 199 098 A2 as well as in the AT 402 020 B disclosed. The known bindings each use two coupling pins, which are held on a housing of the heel unit so that they run parallel to each other and protrude toward the touring boot. In addition, overcoming a restoring force in a plane parallel to the sliding board plane (in the horizontal plane), the pins are movable relative to each other to provide a trigger mechanism for a frontal lintel deployment. The triggering of the known heel unit on a touring boot will be described below with reference to FIG. 1 explained in more detail.

FIG. 1 shows a touring shoe 100 in a rear view (along the X-direction sliding longitudinal slide). In the sectional view of the FIG. 1 a heel portion 110 of the touring boot 100 is depicted. Furthermore, two coupling pins 120 are indicated, which protrude from the heel unit (not shown) in the X direction and engage in recesses 122 of the touring boot 100. The Inner boundaries of the recesses 122 include opening portions 124, respectively, at which the recesses 122 are opened to a sole surface 126 of the shoe 100, triggering projections 128 directed away from the shoe center in a Y direction (perpendicular to a vertical Z direction and perpendicular to the X direction), locking portions 130 in the form of notches, in which the coupling pins 120 can engage, and upper abutment surfaces 132, which extend substantially in the Y direction.

The coupling pins 120 are in the in FIG. 1 shown biased position and are by a (not shown) elastic means of the heel unit from this position in a horizontal plane (Y-direction) away from each other movable. In the in FIG. 1 shown position, the coupling pins 120 are engaged with the notches of the locking portions 130 and the touring shoe 100 is secured to the heel unit (downhill).

In FIG. 1 It will also be appreciated that the inner boundary of the recesses 122 with respect to the Z-axis between the trigger tabs 128 and the opening portions 124 additionally includes entry contours 134. The distance between the two entry contours 134 of the two recesses 122 increases with increasing distance from the sole 126 of the touring boot 100. This makes it possible to approach the touring shoe 100 so from the top of the coupling pins 120 when entering the touring binding, that the coupling pins 120 on the Sole 126 enter the opening portions 124 and are spread upon further lowering of the heel portion 110 by the entry contours 134 against the action of the elastic means of the heel unit. Upon further downward movement of the heel portion 110 overcoming the force of the resilient means, the coupling pins 120 pass the firing tabs 128 until they snap into the notches of the latching portions 130. The touring boot is then coupled in the normal position (downhill) with the heel unit.

In the case of a My-trigger, in which the touring shoe 100, a torque acts around an axis extending in the Y direction, so that the heel portion 110 in the direction of an arrow A in FIG. 1 is moved upward, with a force exceeding a predetermined release force (eg, during a fall), the coupling pins 120 by the release tabs 128 from its in FIG. 1 shown displaced outward laterally so that they move away from each other in a horizontal plane. As soon as the heel section 110 moves upwards, so that the release projections 128 are arranged above the center measured in the Z direction of the coupling pins 120, the touring shoe 100 can be moved further without further application of force in the direction of the arrow A, wherein the coupling pins 120 from the trigger tabs 128 slide until they emerge from the opening portions 124 on the sole 126 of the touring boot 100. The touring boot is then released and decoupled from the ski (at least in the heel area).

If the touring binding is loaded, for example during departure, the decision as to whether the heel unit triggers or not, ie whether or not the coupling pins 120 exit from the recesses 122, falls within the short distance of the in FIG. 1 shown position of the coupling pins 120 within the locking portions 130 to pass the trigger projections 128. Especially in sporty driving style (eg in competitive sports) when driving over obstacles, bumps or short-term collision with stones or the like on the track for a short time relatively high forces act on the sliding board. Between touring shoe 100 and heel unit then acts a jerky, short load, which may be large enough to overcome the release force for spreading the coupling pins 120 for a short time. The coupling pins therefore tend to overcome the firing protrusions 128, even with a short impact, so that the toe boot is released by the heel unit, even though this temporary disturbing event does not yet coincide with a fall of the rider connected is. The known binding thus leads in particular in sporty driving in some cases to an undesirable false triggering.

The object of the invention is to provide a heel unit, which on the one hand in the event of a fall ensures a reliable My-triggering of the touring boot and on the other hand, largely prevented even with a downhill in the more demanding terrain, especially in athletic or competition-oriented departure, false triggering.

According to the invention, this object is achieved by a heel unit for a touring binding of a gliding board, comprising a binding body, on which two coupling protrusions are movably held for coupling to a heel portion of a touring boot, wherein the movable support of the coupling protrusions is adapted for the coupling protrusions of the gliding board plane move away.

According to an important feature of the invention, the heel unit has coupling projections which are movable in a direction having at least one component facing away from the sliding board. Thus, while provided on coupling pins of known heel units coupling projections were forced by corresponding bearing of the coupling pins on the heel unit to move exclusively in the horizontal plane (parallel to Gleitbrettebene), the coupling projections of the heel unit according to the invention for a slanted to the sliding board plane or orthogonal to the sliding board plane movement are established ,

It should be noted at this point that in the context of the present disclosure all statements such as "horizontal", "vertical", "lateral", "forward", "backward", "downward", "upward", etc. refer to a heel unit, which is mounted on a arranged in a horizontal plane sliding board. The sliding board level as well as a Gleitbrettlängsachse be defined by a mounting portion of the heel unit, for example mounting holes on a base part of the heel unit.

The movement component of the coupling projections according to the invention in a direction away from the sliding board plane produces the effect that in the event of a torque being applied to the touring ski about a Y-axis, so that a heel section of the touring ski moves upwards from the sliding board plane, the coupling projections can follow the movement of the heel portion over a certain distance before they have displaced relative to the heel portion so far that the engagement between the coupling projections and the heel portion is released. In other words, the present invention allows the creation of a trip path over which the toe shoe shifts relative to the heel unit from the normal engagement position until the actual deployment takes place.

This, in turn, means that the heel unit does not already trigger immediately when a force exceeding the predetermined release force of the heel unit acts on the heel section of the touring ski, but only when this force action lasts until the heel section has exceeded the release path. In a momentary, jerky load in which no triggering is desired, for example, a blow while driving over an obstacle or in a particularly demanding driving maneuver, while the triggering force is exceeded for a short time, so that the heel portion of the touring boot a piece However, the load or force acting on the touring ski falls back short of the predetermined threshold value, ie the release force of the heel unit, so that further movement of the toe shoe relative to the heel unit along the release path is prevented , The touring boot reaches accordingly not the actual release position but returns under the action of the restoring force of the heel unit back to the normal position. In the case of such a temporary load, which generally does not result from a fall of the driver, so an undesirable false triggering can be prevented.

The release according to the invention with movement of the coupling sections in a direction away from the sliding board plane can also be described with reference to a variable called the release energy. If, at each point of the triggering path, the force acting between the toe shoe and the heel unit is considered in the direction of returning the toe shoe to the normal position, then the release energy as the integral of this restoring force results via the release path, i. from the normal position to the trigger point at which no restoring force acts on the heel section and the touring boot is released. By creating or extending the triggering path, it is now possible according to the invention to determine a predetermined release energy to be transmitted from the toe shoe to the heel unit by suitable presetting / setting of the restoring force or release force (for example spring force) and of the triggering path, so that the heel unit triggers.

In principle, the movement of the coupling projections according to the invention can be a substantially vertical movement away from the sliding board plane, so that the coupling projections are first pulled vertically upwards with the heel section of the shoe during the release process and are freed from the heel section after a certain distance has been exceeded. For example, the coupling projections may be guided on the heel unit in such a way that they initially move upwards in the vertical direction against the force of a restoring device and are subsequently driven away from one another in order to disengage from corresponding latching sections on the heel section of the touring boot.

In a preferred embodiment of the invention, the movable support of the coupling projections is arranged for the coupling projections to move along a direction of movement which runs obliquely away from the sliding board plane and obliquely to the sliding board normal. This allows the heel unit to cooperate with touring boots of the conventional type, which have a release contour in their heel section, which allows the coupling projections to be triggered by movement of the coupling projections away from one another. The running obliquely to the sliding board level and Gleitbrettnormalen movement device according to this embodiment then allows the movement of the touring shoe along the trip path on the one hand, the invention Nachführbewegung the coupling projections of the Gleitbrettebene away to increase the trip path and on the other hand simultaneously directed away from each other movement of the coupling projections to ensure the ultimate complete release of the touring boot.

In a heel unit of the invention may further be provided that the movable mounting of the coupling projections is adapted for movement of the coupling projections from a first position to a second position against the action of a triggering force, wherein a distance of the coupling pins from the sliding board level in the second position greater is as in the first position, and wherein an intermediate distance of the coupling pins from each other in the second position is greater than in the first position. In this case, the first position of the coupling projections corresponds to an unloaded position in which the coupling projections are not engaged with the shoe or the shoe does not experience significant forces in the direction of My release (touring shoe in normal position or unloaded downhill position). The second position corresponds to a position of the coupling projections, in which they have already moved part of the way towards the release position, or have just reached the release position for release of the touring boot. By the first Position of the coupling projections is defined a normal position of the touring boot, in which the toe is held in the unloaded case or in the case of a lower load on the heel unit. The second position defines a pre-release position or position of the shoe in which the toe shoe has moved over at least a portion of the deployment path relative to the heel unit, the described embodiment ensuring movement between the first position and the second position overcoming a deployment force. By increasing the distance of the coupling projections in the second position, a triggering of the touring boot is prepared, while increasing the distance of the coupling projections from the sliding board plane in the second position, the inventive entrainment of the coupling projections with the heel portion of the touring boot to increase the triggering path is achieved.

In a technically simple realization of the movable coupling projections, these can be provided at the front ends of coupling pins, wherein the coupling pins each have holding portions on which they are pivotally mounted on the binding body. The pivotable mounting can be designed so that the movement according to the invention of the coupling projections away from the sliding board plane is allowed along with other directions of movement (eg ball joint). Alternatively, a specific direction of movement of the coupling projections can be predetermined by appropriate orientation of a bearing axis of the coupling pins. Alternatively or additionally, it is thought to force the coupling pins by at least one lateral guide on a desired trajectory or in a desired direction of movement. A guide arranged at a distance from the pivot axis of the coupling pins can stably introduce the relatively high forces acting on the coupling pins from the shoe into the heel unit.

If the coupling projections are provided on pivotable coupling pins, then in a further embodiment it is particularly contemplated that engaging portions are provided on the coupling pins which are engaged or engageable with a transmitting member, the transmitting member being movably supported on the binding body that it is movable in at least one direction only by overcoming a predetermined force, in particular the force of a trigger spring means. This embodiment provides a technically simple way to bias the coupling pins by a predetermined force, in particular to bias in a first position in which they hold the touring boot in a normal position for a downhill, so that the touring boot by the force acting on the transmission part, in particular the force of a trigger spring means is forced back from a pre-release position to a normal position. As a result, during its movement from its normal position along the release path to the release position, the toe shoe experiences the restoring force (release force) of the heel unit.

By changing the predetermined release force, in particular the force of the trigger spring means can be influenced directly on the tripping behavior (tripping force, tripping energy).

In principle, each of the two coupling pins could be brought into engagement with a separate transmission part, which is acted upon by a predetermined force. However, in order to simplify the structure, it is preferable that the cam portions of the coupling pins are engaged or engageable with a common transmission member, so that the energization of both the coupling pins can be realized with only one transmission part and, in particular, using a common trigger spring means.

In a further preferred embodiment it is provided that the above-mentioned driving portions and the above-mentioned Sliding transmission part (or transmission parts) in the movement of the coupling projections on respective guide sections to each other. By this feature, it is possible to convert the circular movement of the driving portions of the pivotally mounted coupling pins by sliding on the transmission part in a movement of the transmission part in a different direction or with another type of movement.

The guide portions on which the cam portions and the transfer member slide against each other may include first guide portions and second guide portions. In this case, the first guide portions can force the driving portions on a trajectory which obliquely away from the sliding board plane and oblique to Gleitbrettnormalen, so that the effects described above a tracking movement of the coupling projections with the upwardly lifting heel portion of the touring boot and the release of the touring boot preparatory movement the coupling projections are obtained away from each other. In addition, the second guide portions may be configured such that they implement the movement of the driver portions in the movement of the transmission member against the action of the predetermined force. Thus, important mechanical parts of both the triggering mechanism and the tracking mechanism of the present invention can be provided only by appropriate construction of the guide portions of the cam portions and the transmission portion.

The second guide sections of the type described above can have, in a technically simple variant, at least one guide surface running obliquely to the axis of the coupling pins. This guide surface may be formed on the respective driver portion and / or on the transmission part and causes the substantially circular movement of the driver portion with respect to the sliding board can be converted obliquely upwards and outwards in a movement of the transmission part in the desired direction, eg a Pivoting or sliding movement along the sliding board longitudinal axis (X-axis). The latter variant offers in particular the advantage that a release spring means can be arranged to save space parallel to the sliding board longitudinal axis on the heel unit.

In a further embodiment of the invention, the transmission part may be pivotally mounted on the binding body. A pivotable bearing offers over a sliding guide the advantage that tilting or jamming of the transmission part can be largely excluded and at the same time at a point of the transmission part at a distance from the pivot point, the interaction with a rectilinear spring means (such as compression spring) is possible.

In a further embodiment of the invention, the heel unit may further comprise a base portion for attachment of the heel unit to a toe board, the binding body being slidable relative to the base portion in the longitudinal direction of the slider (X direction) and biased towards the toe shoe by the action of a spring means. The displaceability of the binding body allows a further improvement of the tolerance of the heel unit to temporary loads, especially in sporty driving style, which should not lead to a triggering of the heel unit yet. In particular, the longitudinally displaceable mounting of the heel unit can compensate for a relative movement between the heel unit and the front unit of the touring binding, which occurs when deflection of the sliding board occurs when passing through a floor depression. The binding body can thus always be kept in safe contact with the heel portion of the Tourenskis by the action of the spring means even during the departure constantly changing Gleitbrettdurchbiegung.

The longitudinal displaceability of the binding body according to the embodiment described above can also be used as an entry mechanism be used to allow the user when switching from the walking position in the downhill position the entry into the downhill of the touring binding by the binding body is pushed along with the coupling projections for the entry as far back to the pivoting mounted on the front unit of touring touring boot can be pivoted towards the sliding board and the recesses on the heel portion of the touring boot facing the coupling projections. Then, the binding body can move forward to the touring boot, so that the coupling projections engage in the recess of the touring boot and the touring boot is fixed in the downhill position on the sliding board.

The aforementioned displacement of the binding body in the longitudinal direction of the sliding board can be facilitated by an entry aid, which enables the driver to get out of the walking position of the touring binding by lowering the heel section of the touring boot. To realize such a boarding aid is proposed that on the binding body a shoe control section is provided which has an obliquely extending to the sliding board level, the rear end of the sliding board rising control contour, so that a touring shoe when approaching the gliding board for coupling the touring boot on the heel unit displaces the binding body in the reverse direction.

In a preferred embodiment of the above-mentioned heel unit with longitudinally displaceable binding body is provided in particular that the shoe control portion is supported on the transmission part, wherein the predetermined force which is required for movement of the transmission part relative to the binding body in the reverse direction, is greater than the force of the spring means with which the binding body is preloaded in sliding board longitudinal direction. Thus, the transmission part in addition to the above tasks (in cooperation with the driving portions of the coupling pins) and the task of Transfer power from the shoe control section in the binding body. The construction of the heel unit can be further simplified in this way.

In order to facilitate locomotion on the Tourengleitbrett on a rise, it is further proposed that the heel unit has at least one climbing aid, which is adjustable in a walking position of the heel unit in an active position in which a heel portion of a touring boot at a predetermined height above a Sliding board level supports. Such a climbing aid will support the touring boot in particular at a height above the coupling projections and may for example be pivotally mounted on the heel unit. Preferably, the height of the climbing aid for adaptation to a terrain slope is adjustable or the heel unit comprises a plurality of climbing aids, which can be swung in the walking position of the binding either from an inactive position outside the pivoting range of the touring boot in an active position to support the touring boot. In the active position, in particular a plurality of climbing aids can be stacked one above the other in order to realize a desired support height.

The abovementioned shoe control section for providing an access aid for the touring boot can be advantageously combined with the at least one climbing aid if the at least one climbing aid (for getting into the heel unit) is adjustable to a position in which the shoe control section is arranged above the coupling projections and the Control contour of the shoe control section obliquely to the sliding board plane and towards the rear end of the sliding board is rising towards. In this way, when adjusting the at least one climbing aid from the active position to the inactive position at the same time the shoe control section are placed in the required position for the function of the boarding assistance, so that the operation of the heel unit when changing from the walking position is facilitated in the downhill position and the structure of the heel unit is simplified.

In a further embodiment of the present invention, the heel unit may comprise a base part for fastening the heel unit to a toe board, wherein the binding body is pivotable relative to the base part about an axis substantially orthogonal to the sliding board plane. The pivotability of the binding body about the substantially orthogonal axis may be used, on the one hand, to adjust the heel unit between the downhill position and a flat terrain position, in which the coupling projections are pivoted laterally away from the heel portion of the toe shoe such that the heel portion of the toe boot is free from Can lift the gliding board and the touring boot is movable about the pivotal mounting of the front unit. On the other hand, the pivotal movement of the binding body about the substantially orthogonal axis may be biased by an Mz release spring into the normal downhill position, so that an Mz-triggering mechanism is provided to the touring shoe in case of high torque about a vertical axis of rotation (in a fall) release.

Figur 1

eine Rückansicht eines Fersenabschnitts eines Tourenschuhs,

Figur 2

eine perspektivische Darstellung einer Ferseneinheit gemäß dem Ausführungsbeispiel der Erfindung,

Figur 3

eine Vorderansicht der Ferseneinheit des Ausführungsbeispiels,

Figur 4

eine Schnittansicht der Ferseneinheit des Ausführungsbeispiels entsprechend einer Schnittlinie IV-IV in Figur 3,

Figur 5

eine Vorderansicht der Ferseneinheit des Ausführungsbeispiels mit demontierten Steighilfen,

Figur 6

eine Schnittdarstellung der Ferseneinheit des Ausführungsbeispiels entsprechend einer Schnittlinie VI-VI in Figur 5, und

Figur 7

eine Seitenansicht der Ferseneinheit des Ausführungsbeispiels in einer Gehstellung mit einer ersten Steighilfe in aktiver Stellung.

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

FIG. 1

a rear view of a heel section of a touring boot,

FIG. 2

a perspective view of a heel unit according to the embodiment of the invention,

FIG. 3

a front view of the heel unit of the embodiment,

FIG. 4

a sectional view of the heel unit of the embodiment according to a section line IV-IV in FIG. 3 .

FIG. 5

a front view of the heel unit of the embodiment with disassembled climbing aids,

FIG. 6

a sectional view of the heel unit of the embodiment according to a section line VI-VI in FIG. 5 , and

FIG. 7

a side view of the heel unit of the embodiment in a walking position with a first climbing aid in the active position.

A heel part 10 of the embodiment of the present invention comprises a base part 12 to be fixed to a gliding board 11, a binding body 14 held on the base part 12, and coupling projections 16 held on the binding body 14 for engagement with a heel part 110 (FIG. FIG. 1 ) of a touring shoe 100.

Attachment means, in particular mounting holes 13, for fixing the base part 12 to the gliding board 11 define a gliding board plane E of a gliding board 11 connected to the heel unit (horizontal plane in this disclosure) and a gliding board longitudinal axis M along a central axis of the gliding board. The sliding board longitudinal axis M extends in an X direction of a coordinate system of the heel unit. A sliding board normal which is perpendicular to the sliding board plane E runs in a Z direction of the coordinate system, and a Y direction of the coordinate system is orthogonal to the X direction and orthogonal to the Z direction.

The binding body 14 may be held on a bearing assembly 18 about an axis extending in the Z-direction pivotally relative to the base part 12. For this purpose, the bearing assembly 18 may include a bearing pin 20 which is inserted into an associated recess 22 of the binding body 14. The storage of the binding body 14 on the journal 20 is preferably biased in a down position, in which the coupling projections 16 point in the X direction to the front.

For biasing the binding body 14 in the departure position, a known Mz-triggering mechanism may be provided which, for example, in the EP 0 199 098 A2 is described. The in the EP 0 199 098 A2 described details for rotatably supporting a binding body with coupling pins on a vertically extending pin and acting between these elements spring assembly to be fully incorporated by reference in the present disclosure. Thus, on the outer surface of the journal 20, a cam surface 24 may be provided, on which slides off during a relative rotation between the binding body 14 and bearing pin 20, a cam follower 26 which is movably guided on the binding body 14 and by the force of an Mz-release spring 28 into contact the cam surface 24 is biased. The Mz release spring 28 can be supported on the one hand on a Vorspannungseinstellelement 30, which is mounted in an adjustable, but during normal operation fixed position on the binding body 14, and on the other hand can be supported on the cam follower 26. The Vorspannungseinstellelement 30 may be a screw, so that by turning the screw, the distance between the two support points of the Mz-release spring 28 and thus the bias of the Mz-release spring 28 is adjustable.

The contour of the cam surface 24 is selected so that the binding body 14 is biased to the descent position in which the coupling protrusions 16 point forward substantially in the X direction. Further, the cam surface 24 is shaped so that upon rotation of the binding body 14, the cam follower 26 is urged in the direction of compression of the Mz release spring 28, so that a force is opposed to the pivotal movement of the binding body 14 from the down position. If this force exceeds a predetermined Mz release force, such as in the case of a fall and a twisting of the Sliding board, a heel portion of the toe shoe 100 is pressed in the lateral direction (Y direction), the force of the Mz release spring 28 is overcome and the binding body 14 rotates away with the coupling projections 16 to the side, so that the engagement is released from the touring boot , This movement is the Mz release movement of the binding body 14 and the coupling projections 16, respectively.

The bearing assembly 18, with which the binding body 14 is mounted on the base part 12, additionally comprises a suspension bearing, which allows a suspension movement of the binding body 14 and thus of the coupling projections 16. In the illustrated variant of the bearing pin 20 is guided linearly displaceable in the X direction on the base part 12 and biased by the action of a spring element 32 in the forward direction (to the touring shoe 100 out).

The linear guide may comprise a first rail portion 34 formed on the base portion 12 and a second rail portion 38 formed on a carriage 36 and slidingly engaged with the first rail portion 34. The journal 20 may then be connected to the carriage 36 and be displaceable along the X direction on the base part 12. By the spring element 32 of the carriage 36 is biased forward in the X direction. Its direction of travel in the X direction forward is limited by a first stop 40 which is held stationary (i.e., during normal operation, e.g., during descent) stationary with respect to the base member 12. At the first stop 40, the carriage 36 abuts with a second stop 42 when force is not applied to the binding body 14 in the X direction (e.g., with the ski boot uncoupled).

In the exemplary embodiment, the spring element 32 is housed in a recess 44 open to the sliding board of the carriage 36 and is supported with its front end on a front boundary wall 46 of the recess 44, while the rear end of the spring element 32 at a spring bearing 48 is applied, which is held operationally stationary to the base part 12. Preferably, the spring bearing 48 also forms the first stop 40, so that the spring bearing 48 has a double function for supporting the spring element 32 and for limiting the movement of the carriage 36.

In the embodiment of the invention, the spring bearing 48 may be adjustable in position relative to the base member 12 to adjust the unloaded position of the carriage 36 along the X direction can. For this purpose, the spring bearing 48 may be provided as a threaded nut, which is penetrated by a thread extending in the X direction screw 50 in threaded engagement. The screw 50 may be mounted at its end remote from the spring bearing 48 at a bearing portion 52 of the base member 12 so that the screw 50 can rotate about its longitudinal axis, but can not move in the X direction. To adjust the screw 50, this may have a screw head 54 with a tool engagement portion. The spring element 32 is preferably designed as a helical spring, such that the spring bearing 48 passing through screw 50 can penetrate smoothly into the interior of the coil spring.

Hereinafter, a My-triggering mechanism of the heel unit of the embodiment of the invention will be described in more detail. The My-triggering mechanism includes the coupling projections 16 which are movably held on the binding body 14. In this case, the coupling projections 16 are preferably formed on front ends of two coupling pins 56, which are mounted pivotably on pin bearing sections 60 of the binding body on holding sections 58 facing away from the coupling projections 16. The pin bearing portions 60 support the coupling pins 56 such that the coupling projections 16 are movable at least in a direction of movement away from the sliding board plane.

Between the coupling projections 16 and the holding portions 58 are formed on the coupling pins 56 driver portions 62 or attached. The driver portions 62 of the two coupling pins 56 are preferably in contact with a common transmission member 64 which is movably supported on the binding body 14 so that movement of the pins 56 via the driver portions 62 is translated into movement of the transmission member 64. The transmission part 64 can be pivoted to the binding body 14 with a pivot axis 66 running in the Y direction. Preferably, the transmission part 64 further comprises a spring bearing 68, in particular a spaced from the pivot axis 66 spring bearing 68 for supporting a My-release spring 70. The contact between the driving portions 62 and the transmission part 64 may lie in a between the spring bearing 68 and the pivot axis 66 Section of the transmission part 64 to improve the power transmission between the transmission part 64 and My release spring 70 by the leverage of the transmission part 64.

In Figures 3 and 5 It can be seen that the cam portions 62 slide on first guide surfaces 72 of the transmission part 64, which run substantially parallel to the axes of the coupling pins 56 on either side of the cam portions 62 and force the cam portions 62 on trajectories along the directions of movement r ₁ and r ₂ . The directions of movement r ₁ and r _{2 of} the driver sections 62 extend obliquely away from the sliding board plane E and obliquely to the Z direction (sliding board standards). As in FIG. 5 can be seen, the directions of movement r ₁ and r _{2 are} V-shaped and symmetrical to a vertical longitudinal center plane V, which is orthogonal to the sliding board E in the X direction and halves the sliding board in the longitudinal direction. With the longitudinal center plane V, the directions of movement r ₁ and r _{2 may} each include an angle of between about 10 degrees and about 45 degrees, more preferably an angle between about 15 degrees and about 30 degrees.

On the transmission part 64 may further include a normal position stop 74 and / or a Auslösestellungsanschlag 76 for the driving portions 62nd be formed to limit the pivoting range of the coupling pins 56 in at least one of the two positions, normal position and release position. In a structurally simple manner, as can be seen in the exemplary embodiment, the first guide surfaces 72, the normal position stop 74 and the release stop 76 can be provided together as inner boundary walls of a common recess. The coupling between the driver sections 62 and the transmission part 64 can then be described in each case as a slot coupling, in which the transmission part 64 has two substantially V-shaped elongated holes, in which the driver sections 62 along the directions of movement r ₁ and r ₂ out and respect their movement end positions are limited.

The transmission part 64 preferably has second guide surfaces 78 for each of the driver sections 62 of the coupling pins 56, against which rear sides 80 of the driver sections 62 abut. The second guide surfaces 78 are designed so that when, during a pivoting movement of the coupling pins 56 along the directions of movement r ₁ and r _2, the driver portions 62 slide on the second guide surfaces 78, the transmission member 64 is pivoted about the pivot point 66. This can be realized by an obliquely to the axis of the coupling pins 56 extending guide surface 78 and a trough-shaped guide surface 78.

The second guide surfaces 78 can be structurally easily connected to the first guide surfaces 72 by the second guide surfaces 78 are formed as the bottom of a recess whose side walls are formed by the first guide surfaces 72 (and optionally by the stops 74, 76). At the bottom 78 of the recess then a slot is provided whose dimensions are smaller than the dimensions of the recess and through which a narrower portion of the coupling pins 56, but not the driver portions 62, can be passed.

As already mentioned, a front end of a My release spring 70 may be supported on a spring bearing 68 of the transmission part 64. In the exemplary embodiment, a bearing pin 82 attached to the front end of the My release spring 70 is mounted on the spring bearing 68 of the transmission part 64 via a ball-and-socket coupling 84. The ball-and-socket coupling 84 provides for the translation of the pivotal movement of the spring bearing 68 of the transmission member 64 into a substantially linear compression movement of the My trip spring 70 such that the My trip spring 70 is actuated only along its rectilinear compression or decompression direction.

The My release spring 70 is oriented substantially in the X direction. At the rear end, the My release spring 70 may be coupled directly to a binding body-fixed portion, or as illustrated in the embodiment, to provide the possibility of adjusting the biasing force of the My release spring 70 and thus adjusting the My release force, with a My Release force adjustment mechanism 86 may be provided. The My release force adjustment mechanism 86 may include a second journal 88 which is attached to a rear end of the My trip spring 70 and whose distance from a binding body-fixed bearing portion 90 is adjustable by adjusting a threaded screw 92. The threaded screw 92 may be rotatably mounted on the bearing portion 90, but immobile in the axial direction of the My release spring 70 and be in engagement with an internal thread of the second journal 88, so that by rotation of the threaded screw 92, in particular by actuation via a tool engagement portion 94th at the end of the threaded screw 92, the second bearing pin 88 in the axial direction of the My-release spring 70 can be moved. In this way, the bias of the release spring 70 can be adjusted to influence the My-triggering behavior of the heel unit 10.

The heel unit 10 may further comprise a first climbing aid 96 and a second climbing aid 98 which are pivotally mounted on the heel unit 10 for selectively or individually pivoted into an area between the gliding board and the toe shoe (active position), so that the Touring shoe 100 can be supported in a corresponding height above the sliding board. In a conventional manner, walking on a slope is facilitated in this way. Preferably, both climbing aids 96, 98 are mounted on a common pivot axis, which extends in the Y direction. A special space and component savings can also be achieved if on the common pivot axis 66 of the climbing aids 96, 98 and the transmission part 64 is pivotally mounted on the binding body 14.

At the first climbing aid 96, a shoe control portion 106 is arranged, which has an obliquely to the sliding board plane E extending to the rear end of the sliding board rising toward control contour 108. A lower end 108u of the control contour 108 terminates with respect to the X direction approximately at the level of the front ends of the coupling projections 16, or projects forward even beyond the front ends of the coupling projections 16. An upper end 108o of the control contour 108 lies in the X direction behind the front ends of the coupling projections 16. The control contour 108 preferably includes an angle of between about 45 and about 75 degrees with the sliding board plane E to ensure safe sliding of the heel portion of the toe boot and to simultaneously guarantee a sufficient displacement of the binding body 14 in the X direction.

Hereinafter, the operation of the heel unit 10 of the embodiment of the invention will be explained. In the unloaded normal position shown in the figures, the first stop 40 of the spring bearing 48 abuts the second stop 42 of the carriage 36, the coupling pins 56 are in their normal position in which the Coupling projections 16 occupy their lowest and approximate position, in particular the cam portions 62 abut the normal position stops 74. The touring shoe 100 is decoupled from the heel unit 10.

If the toe shoe is pivotally engaged on a front unit of the touring binding so that it can pivot in its front portion about a pivot axis extending in the Y direction while the coupling projections 16 are decoupled from the touring shoe 100, the touring binding is in a walking position , For walking in the flat or slightly sloping terrain, the first climbing aid 96 is folded down until it rests on the top of the gliding board 11 or on top of the base 12, as in FIG FIG. 7 is illustrated. A first shoe pad 102 of the first climbing aid 96 is then disposed at a first climbing height above the sliding board plane E (approximately at the level of the coupling projections 16 or above) to support the heel portion 110 of the touring boot 100 at that height. In a rise with a greater slope and the second climbing aid 98 can be folded down until it rests on the first climbing aid 96 and a second shoe pad 104 of the second climbing 98 the heel section 110 of the touring boot 100 in a second, greater climbing height above the Gleitbrettebene E is supported.

At the end of the ascent and in preparation for a downhill run, the touring binding must be adjusted from the walking position to the downhill position. For this purpose, the optionally folded down first or second climbing aids 96, 98 are folded upwards, so that the shoe control section 106 is in the pivoting region of the heel section 110 of the touring boot 100. If the heel portion 110 is lowered and hits the control contour 108, the heel portion 110 slides on the control contour 108 and displaces the shoe control portion 106 to the rear. Since the shoe control portion 106 abuts with its rear side 109 on the transfer part 64, the movement of the shoe control portion 106 in the X direction transferred back to the transmission part 64. The My release spring 70 has a higher spring constant or a higher bias than the spring element 32 of the suspension bearing, on which the binding body 14 is held relative to the base member 12 in the X direction displaceable. The backward displacement of the shoe control section 106 effected by the toe shoe 100 thus does not lead to a pivotal movement of the transmission part 64 but displaces the binding body 14 in compression in the backward direction of the spring element 32.

When the heel portion 110 of the toe shoe 100 reaches the lower end 108u of the control contour 108, the binding body 14 is displaced in the rearward direction such that the front ends of the coupling projections 16 are arranged in the same direction with the heel portion 110 or behind the heel portion 110 in the X direction are. The heel portion 110 may thus continue to slide downwardly on the lower end 108u of the control contour 108 until the catch portions 130 on the heel portion 110 of the toe shoe 100 are sufficiently aligned with the coupling projections 16. *** " Finally, when an upper edge 136 of the heel portion 110 at which the heel portion 110 forms a step-like projection relative to the toe shoe 100 passes the lower end 108u of the control contour 108, the heel portion 110 eventually slides off the shoe control portion 106, whereupon the binding body 14 passes through the Force of the spring member 32 is pushed forward and the coupling projections 16 enter into the recesses 122 of the touring shoe 100 to take the touring shoe 100 in engagement.

In this way, the driver can get into the downhill position of the touring binding by the tour shoe 100 pivotally held on the front unit of the touring binding being pushed towards the gliding board by a simple movement until the coupling protrusions 16 engage in the recesses 122 of the touring boot 100. The force sufficient for this is dependent on the spring force of the spring element 32 and is thus In particular, regardless of the spring force of the My-release spring 70. In this way it can be achieved that even when using a My-release spring 70 with very high clamping force to allow a particularly sporty driving a relatively easy entry into the touring binding is possible because of the entry necessary pressure force can be defined independently of the My-release spring 70 by the spring element 32.

During descent, the longitudinally displaceable mounting of the binding body 14, under the action of the spring element 32, takes on the task of dynamically compensating for skid deflection when driving over bumps so that during descent the binding body 14 is always securely engaged and in close contact with the heel portion of the toe boot can.

If there is a short-term shock or impact load during the descent, for example, when driving over a stone or in a particularly demanding driving maneuver, it is generally not desirable that the heel unit 10 triggers. If the momentary impact force acting on the heel portion 110 in the direction of an arrow A is greater than the My release force of the My release mechanism of the heel unit 10, which depends, inter alia, on the force of the My release spring 70, then The heel portion 110 of the touring boot 100 begins to lift off the gliding board in the direction of arrow A. In this movement, since the coupling projections 16 are engaged with the catching portions 130 of the recesses 122 of the heel portion 110, the coupling projections 16 are also lifted upwardly away from the sliding board plane E by a force acting in the direction of the arrow A. The upward movement of the coupling projections 16 forces via the guidance of the driver sections 62 on the transmission part 64 a V-shaped upward movement of both coupling projections 16, such that the distance between the two coupling projections 16 increases from the Gleitbrettebene and also the distance between the two Coupling projections 16 increases.

In this release movement of the coupling projections 16, and thus the coupling pins 56, further slide the back sides 80 of the driver portions 62 on the second guide surfaces 78 of the transmission part 64 and pivot the transmission part 64 (in FIG. 6 clockwise) against the force of the My trip spring 70. This means that during the entire release movement of the pins 56 a force effect in accordance with the release force acts on the coupling pins 56, which counteracts the upward movement of the heel portion 110. Thus, in the above-described situation of momentary shock or impact loading, the external load on the touring ski 100 drops again before the entire trip path has been swept over, ie before the coupling projections 16 have reached a sufficient distance from each other to overcome the release projections 128 of the heel section 110, Thus, the force of the My release spring 70 returns the touring shoe 100 back to the normal position. A triggering can thus be prevented in the case of a transient, short-term impact load.

However, if the force acts on touring ski 100 in the direction of arrow A with an intensity overcoming the release force for a longer period of time (for example during a driver's fall), coupling pins 56 are pivoted so far that coupling projections 16 finally release trigger projections 128 on heel portion 110 of FIG Touring shoe 100 overcome, so that the coupling projections 16 can emerge from the opening portions 124 of the touring shoe 100 to the sole 126 out of the recesses 122 and the touring shoe 100 is thus decoupled from the heel unit 10. Thus, a reliable fall initiation of the heel unit 10 is ensured.

Claims (14)

1. Heel unit (10) for a touring binding of a glide board, comprising a binding body (14) on which two coupling projections (16) for connecting to a heel portion (110) of a touring boot (100) are movably held,
   the movable holder of the coupling projections (16) being configured such that the coupling projections (16) move away from a glide board plane (E),
   the movable holder of the coupling projections (16) being configured so that said coupling projections (16) move from a first position into a second position against the action of a release force,
   an intermediate distance between the coupling projections (16) being larger in the second position than in the first position,
   characterised in that a distance between the coupling projections (16) and the glide board plane (E) is larger in the second position than in the first position.
2. Heel unit (10) according to claim 1, characterised in that the movable holder of the coupling projections (16) is configured such that the coupling projections (16) move in a direction of motion (r₁, r₂) which runs diagonally away from the glide board plane and diagonally towards the glide board normal.
3. Heel unit (10) according to either of the preceding claims, characterised in that the coupling projections (16) are provided on front ends of coupling pins (56), the coupling pins (56) each having holding portions (58) on which they are pivotally supported on the binding body (14).
4. Heel unit (10) according to claim 3, characterised in that carrier portions (62) are provided on the coupling pins (56), which carrier portions are brought into engagement or can be brought into engagement with a transmission part (64), the transmission part (64) being movably held on the binding body (14) such that in at least one direction it is only movable by overcoming a predetermined force, in particular the force of a release spring means (70).
5. Heel unit (10) according to claim 4, characterised in that the carrier portions (62) and the transmission part (64) slide past each other at respective guide portions (72, 78, 80) when the coupling projections (16) move.
6. Heel unit (10) according to claim 5, characterised in that the guide portions comprise first guide portions (72) and second guide portions (78),
   the first guide portions (72) forcing the carrier portions (62) onto a movement path (r₁ and r₂) which runs diagonally away from the glide board plane (E) and diagonally towards the glide board normal (Z), and
   the second guide portions (78) converting the movement of the carrier portions (62) into the movement of the transmission part (64) against the action of the predetermined force.
7. Heel unit (10) according to claim 6, characterised in that the second guide portions (78) have at least one guide surface running diagonally relative to the axis of the coupling pins (56).
8. Heel unit (10) according to any of claims 4 to 7, characterised in that the transmission part (64) is pivotally attached to the binding body (14).
9. Heel unit (10) according to any of the preceding claims, further comprising a base part (12) for attaching the heel unit (10) to a touring glide board, the binding body (14) being movable relative to the base part (12) in the glide board longitudinal direction (X) and being prestressed towards the touring boot (100) by the action of a spring means (32).
10. Heel unit (10) according to claim 9, characterised in that a boot control portion (106) is provided on the binding body, which control portion has a control contour (108) extending diagonally relative to the glide board plane (E) and sloping up towards the distal end of the glide board such that a touring boot (100), when approaching the glide board for coupling the touring boot (100) to the heel unit (10), displaces the binding body (14) in a rearward direction.
11. Heel unit (10) according to claim 10, and according to any of claims 4 to 8, characterised in that the boot control portion (106) is supported on the transmission part (64) or the boot control portion is provided on the transmission part, the predetermined force which is necessary for moving the transmission part (64) in a rearward direction relative to the binding body (14) being greater than the force of the spring means with which the binding body (14) is prestressed towards the touring boot (100).
12. Heel unit (10) according to any of the preceding claims, characterised in that the heel unit (10) has at least one climbing aid (96, 98) which, in a walking position of the heel unit (10), is adjustable into a position in which it supports a heel portion (110) of a touring boot (100) at a predetermined level above a glide board plane (E).
13. Heel unit (10) according to claims 10 and 12, characterised in that the boot control portion (106) is attached to the at least one climbing aid (96) and in that the at least one climbing aid (96) is adjustable into a position in which the boot control portion (106) is arranged above the coupling projections (16) and the control contour (108) of the boot control portion (106) extends diagonally relative to the glide board plane (E) and slopes up towards the distal end of the glide board.
14. Heel unit (10) according to any of the preceding claims, further comprising a base part (12) for attaching the heel unit (10) to a touring glide board, the binding body (14) being pivotable relative to the base part (12) about an axis which is substantially orthogonal to the glide board plane (E).

Images