EP2656885B1 - Front unit for a glide board binding, in particular pivotable front unit with release assembly - Google Patents

Description

The present invention relates, in a first aspect, to a slide board binding front unit comprising a base adapted for attachment to a gliding board defining a sliding board plane, and a front holding device for holding a front portion of a gliding board shoe, the front holding device being rotatable on the base is mounted to allow in an engaged position (eg downhill or tour position) of the front holding device rotation of both the front holding device and the Gleitbrettschuhs about a common, substantially orthogonal to the sliding board plane extending vertical axis.

Such a front unit is from the EP 2 431 080 A1 known. The rotatable mounting of the holding device about a vertical axis of rotation allows a joint rotation of the holding device and the ski boot held thereon in the event of lateral release of the binding (Mz triggering). In the known binding, the release then takes place in two stages, with the heel unit of the binding releasing the heel portion of the shoe in a first stage so that the shoe can pivot freely about the vertical axis together with the front unit retaining means, and in a second stage the joint pivotal movement of the holding device and shoe is abruptly stopped at a stop, whereupon jumps due to the acting inertial forces of the shoe also from the front unit out.

The conventional binding has the disadvantage that due to the two-stage tripping operation in the event of a fall triggering from the front unit is only initiated when the ski boot has already rotated by a predetermined angle to a stop. A second jerky resistance then occurs to cause the front unit to trip as well. In order to ensure a reliable triggering in the second stage by the inertial force between shoe and binding, the holding force of the holding device of the front unit must not exceed a predetermined force. However, a correspondingly lower holding force, on the other hand, under certain circumstances results in false front-end firings during sporty driving or under special loads during touring in touring mode.

Furthermore, be on the FR 2 662 001 A1 Reference is also made, which also includes a generic front unit with a provided for attachment to a sliding board base and a front holding filing, wherein the front holding device is rotatably mounted on the base. For the sake of completeness, please also refer to DE 197 03 942 C2 and the EP 2 353 673 A1 directed.

The object of the invention is therefore to provide a front unit of the type mentioned above with a pivotable holding device, in which a reliable tripping behavior is ensured and at the same time during normal operation of the binding, a sufficiently high holding force is provided on the front unit to prevent false triggering.

To achieve this object, the invention provides a front unit according to claim 1. According to the invention thus takes place a release of the shoe from the front unit (especially in the event of a fall) not in a two-stage process in which the holding device only after exceeding a predetermined angle of rotation, in particular by jerky stop opens, but the rotational movement is in itself Opening movement of the holding device implemented so that the Opening process directly associated with the rotational movement. This ensures that during or after the triggering of the heel unit, the front retaining device also opens and releases the sliding board shoe. Further, since the rotational movement itself is converted into the opening movement of the holding device, ie the holding device is forcibly opened during the rotational movement, the holding device of the front unit can be set so that it holds the shoe with a relatively high holding force in the normal operating position, so that false triggering can be avoided ,

The movement conversion from the rotational movement of the holding device in an opening movement of the holding device can be realized by a cam mechanism, so that the rotational movement forcibly leads to a simultaneously occurring opening movement. The motion conversion is achieved in this way with simple means and high reliability.

In a preferred embodiment, it is provided that the base has a cam portion and that the holding device has a cam follower which is pressed by a force of a clamping device in abutment against the cam portion, wherein a movement of the cam follower against the force of the clamping device, the adjusting movement of the holding device of causes the engagement position in the release position. In this embodiment, by appropriate shaping of the cam portion or the cam follower a movement sequence when opening the holding device can be defined accurately and reliably. In this case, the cam portion may have a V-shaped or a U-shaped control contour on which the cam follower slides in a relative rotation between the holding device and the base. Such control contours can in particular be designed with symmetrical geometry, so that at the lowest point of the V-shape or U-shape, a neutral position or normal position can be defined, in which the shoe is aligned in the longitudinal direction of the sliding board. From this Normal position, the holding device can be rotated in both directions of rotation in the event of triggering of the front unit, the cam follower then slides on one of the two legs of the V-shape or the U-shape, in particular against the resistance of the clamping device.

In a further development, the present invention relates to a front unit for a sliding board binding, comprising a holding arrangement for holding a sliding board shoe on the Gleitbrettbindung in an engaged position, so that the sliding board shoe about an axis extending transversely to a Gleitbrettlängsachse axis in a defined pivoting range between a horizontal position, substantially parallel to a sliding board plane, and an inclined position, at an angle to the sliding board plane, pivotable, and an actuating arrangement for adjusting the holding arrangement between the engaged position and a release position in which the sliding board shoe is substantially released from the retaining engagement of the holding arrangement. The angle at which the gliding board shoe (in particular a sole plane of the shoe) is inclined in the inclined position relative to the sliding board plane may be between about 60 degrees and about 90 degrees.

A front unit of this kind is for example from the EP 1 990 098 A and is part of a touring binding to keep the sliding board shoe pivotally on the front unit in a touring mode. The known binding has an adjusting mechanism in order to adjust the holding device between a closed engagement position and an opened release position. The adjustment mechanism simultaneously forms a triggering mechanism to release the sliding board shoe in the event of a fall when a force action between shoe and binding in the lateral direction (torque about vertical Z-axis) exceeds a predetermined release force.

Another known front unit is in the EP 2 431 080 A1 and comprises a holding arrangement for holding a sliding board shoe, wherein the holding arrangement rotatable about a vertical axis on a sliding board fixed Base is stored. In this known front unit, an Mz-triggering mechanism is realized by cooperation with a heel unit, wherein in a first phase of the triggering operation, the heel portion of the shoe is released laterally from the heel unit, the sliding board shoe then laterally surrounds the common vertical axis together with the front-unit holding means pivoted and finally after reaching a stop in a known manner, the clamping force of the holding device of the front unit is overcome to release the sliding board shoe and the front unit.

In the touring bindings known in the prior art, release mechanisms are provided primarily for Mz release to prevent twisting of the sliding board about the axis of the user's leg in the event of a fall. However, in the case of an action of a force in the vertical direction and in particular rotation of the ski boot about a Y axis extending transversely to the sliding board longitudinal axis, the touring bindings on the front unit do not release, since in this case the heel unit of the binding vertically upwards the heel portion of the ski boot releases, but then pivoted the shoe about the pivot axis of the holding device of the front unit. In this case, while there is not directly to a dangerous leverage between the user's board and leg, but a complete release of the sliding board from the shoe in a fall is still desirable to remove the sliding board as quickly and reliably from the user in such a situation, and For example, to prevent striking the front portion of the sliding board on the body of the user.

The object of the invention is thus to provide a front unit of the aforementioned type, ie a front unit of a touring binding, which has a My-release mechanism that releases the sliding board shoe from the front unit when a force between the shoe and front unit in the sense of rotation about a transversely extending to Gleitboardlängsachse transverse axis exceeds a predetermined My-release force. According to the invention, this object is achieved by a front unit of a touring binding, in which the actuating arrangement for adjusting the holding arrangement between the engaged position and release position has an actuating element which is arranged in the pivoting region of the sliding board shoe, so that held in the engaged position sliding board shoe in a pivoting movement in a direction of the horizontal position to the inclined position contacted the actuator and actuated to adjust the holding assembly in the release position.

According to the embodiment of the invention, an actuating element for opening the holding arrangement is thus arranged in the pivoting area of the sliding board shoe and is actuated by the sliding board shoe as soon as the sliding board shoe is pivoted far enough about the transverse axis to the front. Thus, in a downhill position of the touring binding, a My-triggering mechanism can be provided in which, upon application of a corresponding torque about a Y-axis in the event of a fall, first the heel portion of the shoe is released upward in a conventional manner from the heel unit of the binding, then the shoe is pivoted upwards, towards the inclined position, and actuated in this way, the actuating element. As a result, the holding arrangement is adjusted to the release position and the shoe is completely released from the touring binding.

In principle, the actuating element could be arranged so that the sliding board shoe can only actuate the actuator after exceeding a very large pivot angle and almost reaching the vertical position, so that no movement of the actuator takes place during a normal pivoting movement in the tour position during the climb and the shoe firmly on the Holding device is held. This variant has the advantage that no further adjustment of the front unit to activate the My-trigger mechanism in the downhill position or Deactivation of the My-trigger mechanism in the tour position is required.

In order to ensure a reliable engagement in the tour position and to avoid false triggering while walking, however, is thought in a preferred embodiment of the invention according to the development that the front unit is adjustable between a down position, in which the actuating element of the actuator assembly is arranged in the pivoting range , and a tour position, in which the actuating element of the actuating arrangement is arranged outside the pivoting range. This embodiment can be developed with particular advantage in that the front unit has a trigger mechanism, wherein the trigger mechanism is adjusted or adjustable in the down position to an active position, so that when a force exerted by a predetermined release force between Gleitbrettschuh and front unit, the holding arrangement in the Release position is adjusted to release the sliding board shoe from the front unit, the release mechanism is adjusted or adjustable in the tour position in a locked position, so that a release of the sliding board shoe is prevented, with an adjustment of the actuating element from the downhill to the tour position an adjustment causes the triggering mechanism from the active position to the locked position. The adjustment between downhill and touring position can thus not only move the actuator according to the invention in the appropriate position, but also simultaneously adjust a trigger mechanism, in particular Mz and / or Mx release mechanism, between active and passive position, so that in the down position, the desired release mechanisms respectively are active and in the tour position essentially no triggering mechanisms are in operation, which could cause false triggering while walking.

Figur 1a

eine Seitenansicht einer Vordereinheit des Ausführungsbeispiels der vorliegenden Erfindung in einer Freigabestellung sowie eine Teilansicht eines vorderen Abschnitts eines Skischuhs,

Figur 1b

eine perspektivische Ansicht der Vordereinheit des Ausführungsbeispiels,

Figur 1c

eine Draufsicht der Vordereinheit des Ausführungsbeispiels,

Figur 1d

eine perspektivische Schnittdarstellung der Vordereinheit des Ausführungsbeispiels entsprechend einer Schnittlinie A-A in Figur 1c,

Figur 1e

eine Schnittansicht der Vordereinheit des Ausführungsbeispiels entsprechend einer Schnittlinie A-A in Figur 1c,

Figuren 2a bis 2e

Ansichten der Vordereinheit des Ausführungsbeispiels entsprechend den Ansichten in Figuren 1a bis 1e, jedoch für eine Abfahrtsstellung der Vordereinheit,

Figuren 3a bis 3e

Ansichten der Vordereinheit des Ausführungsbeispiels entsprechend den Ansichten der Figuren 1a bis 1e, jedoch für eine Tourenstellung der Vordereinheit, und

Figuren 4a und 4b

Schnittdarstellungen der Vordereinheit des Ausführungsbeispiels entsprechend einer Schnittlinie B-B in Figur 2a.

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

FIG. 1a

a side view of a front unit of the embodiment of the present invention in a release position and a partial view of a front portion of a ski boot,

FIG. 1b

a perspective view of the front unit of the embodiment,

Figure 1c

a plan view of the front unit of the embodiment,

Figure 1d

a perspective sectional view of the front unit of the embodiment according to a section line AA in Figure 1c .

Figure 1e

a sectional view of the front unit of the embodiment according to a section line AA in Figure 1c .

FIGS. 2a to 2e

Views of the front unit of the embodiment according to the views in FIGS. 1a to 1e , but for a departure of the front unit,

FIGS. 3a to 3e

Views of the front unit of the embodiment according to the views of FIGS. 1a to 1e , but for a tour position of the front unit, and

FIGS. 4a and 4b

Sectional views of the front unit of the embodiment according to a section line BB in FIG. 2a ,

A front unit of the exemplary embodiment of the invention, generally designated 10 in the figures, is basically configured as a front part of a touring binding to pivotally hold a ski boot 12 on a front shoe section. The front unit comprises a base 14 which is provided for attachment to a touring ski and in particular fastening holes 16 (FIG. FIG. 4a ).

The base 14 defines by its mounting arrangement for attachment to the sliding board a sliding board plane E corresponding to the surface of the sliding board on which the base 14 is to be mounted. In a coordinate system of the front unit runs parallel to the Gleitbrettebene E and along a Gleitbrettlängsachse L an X direction. Orthogonal to the X direction and also parallel to the sliding board plane E runs a Y direction (horizontally in the lateral direction). A Z-direction of the coordinate system of the front unit 10 extends vertically upward, i. orthogonal to the X direction and to the Y direction.

At the base 14 a holding arrangement for holding the ski boot 12 is arranged. In the exemplary embodiment, the holding arrangement is held rotatably about the base 14 about a vertical axis V and comprises a main body 17, which is mounted rotatably on the base 14 about the axis V. On the main body 17, the holding arrangement is arranged with a left engagement element 18l and a right engagement element 18r, which are each mounted on bearing portions 20l, 20r pivotally mounted on the base 14. In the exemplary embodiment, the engagement elements 18l, 18r are each rotatable about vertical (in the Z direction) axes S1l, S1r. At a distance from the bearing portions 20l, 20r, the engagement members 18l, 18r respectively carry coupling means 22l, 22r adapted to engage mating counter coupling means 24l, 24r at front left and right side portions of a sole 26 of the ski boot 12, respectively to pivotally hold the shoe 12 on the front unit 10 about a transverse axis Q defined by the two coupling means 22l, 22r, transverse to the X direction (in particular in the Y direction).

On the left engagement element 18l, a left link 28l is pivotally mounted on a left second pivot axis S2l, which is located at a distance from the left first pivot axis S1l. Similarly, a right link 28r is pivotally mounted on a right second pivot axis S2r on the right engagement element 18r, wherein also the second right pivot axis S2r is at a distance from the right first pivot axis S1r. At a distance from the second pivot axes S2l, S2r, the connecting members 28l, 28r are each pivotally coupled to a clamping element 30. This coupling may be provided at a common pivot point. In the exemplary embodiment, however, the left link 28l is pivotally hinged to the clamping element 30 on a left third pivot axis S3l and the right link 28r is pivoted on a right third pivot axis S3r on the clamping element 30, wherein the left and right third pivot axes S3l, S3r from each other and from the left and right second pivot axes S2l, S2r each have a distance. Preferably, the pivot axes S1l, S1r, S2l, S2r and S3l, S3r are all parallel to one another, in particular in the Z direction.

The tensioning element 30 can be held displaceably in the X direction on the front unit 10 and can be prestressed by a spring element 32 in a direction of displacement (here in the rearward direction or towards the shoe 12). Preferably, the clamping element 30 is formed as a piston which is displaceably held on a piston guide 34 which is fixed to the base body 17. The spring 32, which biases the clamping element 30, may be supported at its front end on a spring bearing 36 of the piston guide 34 and be supported at its rear end on the clamping element 30. The spring bearing 36 may be held in threaded engagement with the piston guide 34, for example, be formed by a screw screwed into the piston guide 34, so that a bias of the spring 32 can be adjusted by turning the spring bearing 36.

By the arrangement of the engaging elements 18l, 18r, the connecting members 28l, 28r and the clamping element 30 described above, a pivoting movement of the engaging elements 18l, 18r between the closed position and the open position can be converted into a linear displacement movement of the clamping element 30. Conversely, a displacement of the clamping element 30 causes a pivoting movement of the engaging elements 18l, 18r between the engaged position and the released position.

The holding arrangement further comprises an adjusting element 38 which can act on the clamping element 30 in order to displace the clamping element 30 against the force of the spring 32 so that the engagement elements 18l, 18r are moved into the release position. The adjusting element 38 can in particular be operated manually by the user, for example by exerting a compressive force by a ski pole, for which purpose the adjusting element 38 can have an operating section with a corresponding recess 40. The adjusting element 38 may be pivotally supported on the main body 17 and have a latching portion 42 which slides on movement of the adjusting element 38 on a control contour 44 of the clamping element 30 so that the movement of the adjusting element 38 in a displacement of the clamping element 30 against the force of the spring 32nd is implemented. At one end portion of the control contour 44, a counter-latching portion 46 of the clamping element 30 with the latching portion 42 of the adjustment 38 engage, so that the adjustment 38 further holds without further exercise of force by the user, the clamping element 30 and the engagement elements 18l, 18r held in the open position become. As can be seen in the figures, the latching section 42 can be formed by a projection which engages in a recess forming the counter-latching section 46.

On the main body 17, an entry element 48 is further movably held, which has a pedal portion 50 for pressure actuation by a lower sole portion of a ski boot 12, so by such Pressure operation by the shoe 12 when entering the front unit 10, the entry element 48 is moved. An unlocking section 52 of the entry element 48 may be in communication with the adjustment element 38 such that movement of the entry element 48 due to the exertion of a compressive force from the shoe 12 to the pedal section 50 releases the latching section 42 of the adjustment element 38 from the counter-latching section 46 of the tensioning element 30, so that the Clamping element 30 is displaced by the force of the spring 32 and the engagement elements 18l, 18r pivot into the engaged position. In the exemplary embodiment, the entry element 48 is pivotally mounted on the base body 17 at a pivot axis 54 pointing in the Y direction, so that an upward movement of the unlocking section 52 can be generated by the ski boot 12 acting downward (arrow 55) in order to lift the adjustment element 38 upwards and thus release the tensioning element 30.

The holding device may further include a trigger lever 56 for providing a My-triggering mechanism. The release lever 56 may be pivotally mounted about a pivot axis 57 pointing in the Y direction on the base body 17 and be arranged so that a lower abutment portion 58 of the trigger lever 56 can be supported on an upper abutment portion 60 of the adjustment 38, so when exerting a compressive force the trigger lever 56 in Z-direction down and downward pivoting movement of the trigger lever 56 takes place a downward movement of the adjusting element 38, whereby the clamping element 30 is displaced against the force of the spring 32 and the engagement elements 18l, 18r are pivoted from the engaged position in the direction of release position.

The trigger lever 56 preferably has an actuating portion 60, which is arranged in a pivoting range M of the shoe 12 with respect to a pivotal movement of the shoe 12 about the transverse axis Q of the coupling means 22l, 22r. In other words, the operating portion 60 of the trigger lever 56 in the down position of the front unit 10 (eg FIGS. 2a to 2e ) positioned such that during a pivoting movement of Shoe 12 around the transverse axis Q forward strikes a front side 62 of the shoe 12 from above on the actuating portion 60 and pushes the trigger lever 56 on continuation of the pivoting movement down and thus opens in the manner described above, the holding device and the shoe 12 releases. Since Gleitbrettschuhe, which are set up and provided for use with a front unit of the type in question here, in particular already known touring ski boots, have a largely normalized geometry in the shoe tip, in particular the coupling to the known coupling pin (coupling means 22l, 22r), the position of the trigger portion 60 and the pivotal range of the trigger lever 56 may be suitably selected by a person skilled in the art to ensure reliable operation of the trigger mechanism during forward pivoting of the shoe 12 by such shoes.

The front unit 10 of the embodiment of the invention may further relieve at least one of the two engagement members 18l, 18r by a relief portion. In the illustrated example, a left relief portion 64l is provided on the body 17 at which the left engaging member 18l can be supported vertically upward and downward, and a right relief portion 64r is fixed to the body 17 at which the right engaging member 18r in FIG can support vertical direction up and down. By way of representation, only the left-hand relief section 64l will be described in more detail below, wherein the described features can also be provided analogously for the support on the right-hand relief section 64r.

The left relief portion 64l has an upper relief surface 66o on which a lower support surface 68u of the left engagement member 18l can be supported, and further includes a lower relief surface 66u on which an upper support surface 68o of the left engagement member 18l can be supported, so that in vertical Direction of the engaging member 18l forces acting both upwards and downwards down stable in the discharge section 64l can be initiated. Upper and lower support surfaces 68o, 68u are arranged in a portion of the engagement element 18l, which is located between the bearing portion 20l and the coupling means 22l.

Preferably, the relief described above is realized by the positive engagement of a projection in a matching recess. As in FIG. 2a can be seen, the left relief portion 64l and the corresponding portion of the left engaging member 18l engage each other in a form-fitting, so that vertical forces can be stably absorbed. In particular, a projection 70 of the relief portion 64l may engage a mating recess 72 of the engagement member 18l or / and a projection 74 of the engagement member 18l may mate with a mating recess 76 of the relief portion 64l. The respective upper and lower support surfaces or relief surfaces are preferably parallel to the sliding board plane E, so that the pivoting movement of the engagement member 18l is not hindered and even during this pivotal movement the corresponding surfaces slide adjacent to each other and the relief function is provided even in intermediate states between engagement position and release position.

With particular reference to FIGS. 4a and 4b Below, the rotary coupling between the base body 17 and base 14 is explained in more detail. As already from the EP 2 431 080 A1 is known, the base body 17 comprises a plate-shaped portion with a circular bearing recess 78 (FIG. FIG. 3e ), wherein the edge portion of the bearing recess 78 is held under a peripheral edge portion 80 of a bearing plate 82 to be secured to the ski or base 14, so that the base body 17 can not be lifted off the gliding board or base 14, but around the central, in Z-direction extending axis of rotation V, which runs through the center of the bearing recess 78, is held rotatable. Since the holding arrangement, including the engaging member 18l, 18r, the clamping member 30 and the other coupled with these elements components are directly or indirectly held on the base body 17, the holding assembly can rotate together with an optionally held by this shoe 12 about the axis of rotation V.

According to another feature of one aspect of the present invention, the rotational movement of the support assembly about the axis V is translated into an opening movement of the engagement members 18l, 18r to provide reliable Mz initiation. For this purpose, the control cam mechanism to be described below can be used. In the exemplary embodiment, the control cam mechanism comprises a cam section 84 formed on the base-fixed bearing plate 82 with a left-hand cam surface 84l and a right-hand cam surface 84r, which can each be rectilinear and in particular symmetrical and V-shaped with respect to the longitudinal slide-board axis L. The cam portion 84 cooperates with a cam follower 86 which is movably held on the base body 17 and which is preferably biased by spring force into abutting contact with the cam portion 84. Preferably, the biasing element 30 described above may include the cam follower 86 such that the spring means 32 may be used to bias the cam follower 86. The cam follower 86 may in particular be a projection on the rear end of the tensioning element 30.

The contour of the cam portion 84 defines a neutral position according to FIG. 4a for the rotation of the base body 17 about the axis V, wherein in the neutral position of the cam follower 86 is disposed at a lowest point of the contour of the cam portion 84 and a pivotal movement of the base body 17 starting from the neutral position in both directions of rotation of the cam follower 86 each on one of two cam surfaces 84l, 84r of the cam portion 84 must accumulate and pushed back against the force of the cam follower 86 biasing spring becomes. A rotation of the main body 17 from the neutral position thus takes place against the resistance of an elastic restoring force. The neutral position is the normal driving position, in which a held on the holding arrangement ski boot 12 is aligned in the direction of Gleitbrettlängsachse L.

The front unit 10 of the embodiment of the present invention may further include a twist-lock mechanism which prevents rotation of the main body 17 and thus the holding assembly about the rotation axis V in a touring position of the front unit 10. With particular advantage, in the exemplary embodiment of the present invention, the release lever 56 can be used to produce such a rotation lock. As in particular in FIG. 3 can be seen, the trigger lever 56 can be adjusted by manual operation by the user about its pivot axis 57 so far forward until a Drehverriegelungsabschnitt 88 of the trigger lever 56 engages with an associated Drehverriegelungsabschnitt 90 of the base member 14 or the sliding board, so that a lateral movement between trip lever 56 and base 14 and sliding board is blocked and thus a rotational lock of the body 17 is reached. For example, the rotational locking portion 88 of the trigger lever 56 engage in a matching recess 92 of the base member 14 to ensure a simple means a positive locking of both directions of rotation. At the same time by the forward pivoting of the trigger lever 56 for rotational locking and the actuating portion 60 of the trigger lever 56 is removed from the pivoting range of the ski boot 12 so that in the tour position thus produced actuation of the trigger lever 56 is avoided by the shoe 12 and thus undesirable opening of the holding assembly in the tour position can be prevented.

Hereinafter, an operation of the front unit of the embodiment of the invention will be explained in more detail.

In the in FIGS. 1a to 1e shown release position of the front unit 10, the clamping element 30 is moved against the force of the spring means 32 forward and is held in this position by engagement of the locking portion 42 with the counter-latching portion 46. The engagement elements 18l, 18r are pivoted to the open position, so that the coupling means 22l, 22r have a sufficiently large distance from each other, so that the ski boot 12 can be inserted between the coupling means 22l, 22r. The release lever 56 is folded back, so that the operation portion 60 is disposed in the vicinity of the ski boot 12. A rear edge portion 94 of the trigger lever 56 may in particular be positioned so that it serves as a stop or at least as an orientation for the ski boot 12 to arrange the ski boot 12 in a suitable position, so that the negative feedback means 24l, 24r of the ski boot 12 the coupling means 22l, 22r ready to attack each other.

To enter the front unit 10 is the user via the ski boot 12 a compressive force in the direction of an arrow 55 in Figure 1e exerted on the pedal portion 50 of the entry element 48, whereupon the entry element 48 moves the adjusting element 38, in particular raises, so that the latching portion 42 is released from the counter-locking portion 46. The adjustment element 38 then no longer holds the tensioning element 30 in the forwardly pushed position, so that the tensioning element 30 is displaced in the rearward direction by the force of the spring means 32. The latching portion 42 slides along the control contour 44 upwards and raises the adjusting element 38 in an upper position. With the backward movement of the tensioning element 30, at the same time, the left and right connecting links 28l, 28r, which are articulated on the tensioning element 30, are pivoted, whereby finally the engagement elements 18l, 18r are pivoted such that the coupling means 22l, 22r extend to the counter-coupling means 24l, 24r of the ski boot 12 to move, in particular the pins 22l, 22r penetrate into the recesses 24l, 24r of the shoe.

When the coupling means 22l, 22r abut against the counter coupling means 24l, 24r, the in FIGS. 2a to 2e as in FIG. 4a produced engagement position produced. In this engagement position, the clamping element 30, the connecting members 28l, 28r and the engagement elements 18l, 18r form a self-locking lock which blocks undesired adjustment of the holding arrangement into the release position. For describing this locking, a moving path of the tension member 30 which runs along the sliding board longitudinal axis L is denoted by L ₁ , a connecting line between the left second pivot axis S 21 and the left third pivot axis S 31 is denoted L ₂ , and a connecting line between the left second one S2l pivot axis and the left first pivot axis S1l is denoted by L. ₃ As in FIG. 4a can be seen, then in the engaged position, an angle W ₁ between line L ₁ and line L _{2 is} approximately a right angle and an angle W ₂ between the line L ₂ and L ₃ is also substantially a right angle. Corresponding right angles are set analogously also in the engaged position of the front unit 10 between L ₁ and a connecting line between the right third pivot axis S3r and the right second pivot axis S2r and between the latter connection line and a connecting line between the right second pivot axis S2r and the right first pivot axis S1r , Due to this right angle, no rotational forces act on the connecting members 28l, 28r upon application of force to the coupling means 22l, 22r, so that the tensioning element 30 is not displaced and thus movement of the elements of the holding arrangement in the direction of the release position is blocked.

As in particular in FIG. 4a can be seen, the cam follower 86 at the rear end of the clamping member 30 is not fully in abutting contact with the cam portion 84. Instead, a slight gap or clearance remains between cam follower 86 and cam portion 84. This play ensures that the coupling means 22l, 22r are pressed against the counter-coupling means 24l, 24r of the ski boot 12 under the spring tension resulting from the spring 32 and also at Manufacturing tolerances or wear are still held securely in contact with the system. When said clearance is provided between the cam follower 86 and the cam portion 84, an additional centering mechanism 96 may preferably be provided which causes the body 17 to be biased toward neutral, ie operate in an angular range in which, due to said play, therebetween Cam follower 86 and cam portion 84 a centering action by the cam mechanism 84, 86 is not effective. The additional centering mechanism 96 may be provided by two relatively weak springs 98 biasing the body 17 in opposite directions of rotation, such that upon deflection of the body 17 from the neutral position, either one or the other spring is compressed and forces back the body toward neutral ,

In the engaged position according to FIGS. 2a to 2e For example, the front unit 10 may be used for a downhill run. In this case, a heel portion of the ski boot 12 can be held by a heel unit, not shown, the touring binding. In such a down position, the front unit 10 of the embodiment provides a My-triggering mechanism and an Mz-triggering mechanism. When a high force in the sense of a rotation about the Z-axis (eg in the event of a fall), the heel unit triggers in the lateral direction and the ski boot 12 pivots together with the holding assembly on the base body 16 about the vertical axis V. The cam follower slides 86 on one of the two control surfaces 84l, 84r of the cam portion 84, so that the clamping element 30 is pushed against the force of the spring means 32 forward. The clamping element 30 pivots the connecting members 28l, 28r and, as a consequence thereof, the engagement elements 18l, 18r in the direction of the release position. Thus, at the same time to trigger the heel unit and a continuous opening movement of the holding assembly takes place in the direction of release position, so that the ski boot both at the heel and at the front Shoe section is released and reliably decoupled from the binding.

In a My-triggering the heel unit (not shown) of the touring binding releases the heel portion of the ski boot 12 in a vertical upward direction when a force exceeding a predetermined release force acts on the ski boot in the sense of a rotational movement about the Y axis (eg during a fall). The ski boot 12 then rotates about the transverse axis Q of the coupling means 22l, 22r upward in the direction of a vertical position of the ski boot until the front 62 of the ski boot 12 contacts the actuating portion 60 of the trigger lever 56 from above. Upon further pivotal movement of the ski boot 12, the release lever 56 is pressed down, so that the adjusting element 38 is also moved downward. By sliding the latching portion 42 on the control contour 44, the clamping element 30 is displaced in the forward direction against the force of the spring means 32 and adjusted in the manner described above, the engagement elements 18l, 18r in the release position, so that the ski boot 12 released from the front unit 10 becomes.

To adjust the tour binding in a tour position, a heel unit (not shown) of the touring binding can be adjusted so that it releases the heel portion of the ski boot 12, so that the ski boot 12 can pivot freely about the transverse axis Q. Further, for the adjustment of the front unit 10 in the tour position of the release lever 56 are folded forward until it is supported on the base member 14 or on the sliding board. In particular, the rotational locking portion 88 of the trigger lever 56 comes into locking engagement with the corresponding rotational locking portion 90 on the base part 14 and on the sliding board, so that rotation of the base body 17 is blocked about the axis V. In addition, by the forward folding of the trigger lever 56, the actuating portion 60 outside of Pivoting range M of the ski boot 12 arranged so that the ski boot 12 can pivot freely without actuation of the trigger lever 56 forward.

To get out of the front unit 10, the user can move the front unit 10 from the tour position as well as from the downhill to the release position. For this purpose, the user can exert a pressure force on the adjusting element 38 by means of a ski pole or in another way. Alternatively, the user in the downhill position of the front unit 10 exert a compressive force on the release lever 56. As a result of the downward movement of the adjustment element 38, the tensioning element 30 is displaced forward in the manner already described above and the engagement elements 18l, 18r are moved into the release position until the latching section 42 locks with the counter-latching section 46 and the retaining arrangement is locked in the release position , The coupling means 22l, 22r are then sufficiently far away from each other so that their engagement with the counter coupling means 24l, 24r is released and the ski boot 12 can be lifted off the front unit 10.

Claims (7)

1. Front unit (10) for a touring binding, comprising a base (14) that is designed for fastening to a gliding board and defines a gliding board plane (E), and a front clamping means for clamping a front portion of a gliding board boot (12), which clamping means comprises a lefthand engagement element (181) and a right-hand engagement element (18r), which are clamped in each case on bearing portions (20l, 20r) such that they are movable between an engagement position for clamping a gliding board boot (12) and a release position for releasing a gliding board boot (12),
   a portion of the engagement elements (181, 18r) that is remote from the bearing portions (20l, 20r) comprising coupling means (22l, 22r) that are designed for being coupled to front lefthand and right-hand counter-coupling means (24l, 24r) of a gliding board boot (12), and
   the coupling means (22l, 22r) defining a transverse axis (Q) that extends transversely to a gliding board longitudinal axis (L), about which transverse axis a gliding board boot (12) clamped on the coupling means (22l, 22r) can be pivoted,
   the front clamping means being rotatably mounted on the base (14) in order to allow, when the front clamping means is in an engagement position, rotation of the front clamping means and of the gliding board boot (12) about a common vertical axis (V) that extends substantially orthogonally to the gliding board plane (E), and
   the front unit (10) further comprising a rotation-locking mechanism, which prevents rotation of the front clamping means about the vertical axis (V) when the touring binding is in a touring position,
   characterised in that the front unit (10) further comprises a disengaging assembly (84, 86) that converts a rotational movement of the front clamping means about the vertical axis (V) relative to the base (14) into an adjusting movement of the front clamping means from the engagement position into a release position, the rotational movement itself being converted into the opening movement of the clamping means, such that the opening process is directly associated with the rotational movement, the disengaging assembly (84, 86) comprising a cam mechanism.
2. Front unit (10) according to claim 1, characterised in that the base (14, 82) comprises a cam portion (84) and in that the front clamping means comprises a cam follower (86), which is pushed by force from a tensioning means (32) into abutment against the cam portion (84), a movement of the cam follower (86) counter to the force of the tensioning means (32) causing the adjusting movement of the front clamping means from the engagement position into the release position.
3. Front unit (10) according to claim 2, characterised in that the cam portion (84) has a V-shaped or U-shaped control contour on which the cam follower (86) slides in the case of relative rotation between the front clamping means and the base (14).
4. Front unit (10) according to any of the preceding claims, wherein
   the gliding board boot (12) can be pivoted, by means of the front clamping means, about an axis (Q) that extends transversely to a gliding board longitudinal axis (L) in a defined pivot region (M) between a horizontal position, substantially in parallel with a gliding board plane (E), and an inclined position at an oblique angle to the gliding board plane (E),
   wherein the front unit (10) comprises an actuating assembly (56, 30, 38) for adjusting the front clamping means between the engagement position and a release position, in which the gliding board boot (12) is substantially released from the clamping engagement of the clamping assembly,
   wherein the actuating assembly (56, 30, 38) comprises an actuating element (56) which is arranged in the pivot region (M) such that when there is a pivot movement in one direction from the horizontal position to the inclined position, a gliding board boot (12) clamped in the engagement position contacts the actuating element (56) and actuates said element in order to adjust the clamping assembly into the release position.
5. Front unit (10) according to claim 4, characterised in that the front unit (10) is adjustable between a downhill position, in which the actuating element (56) of the actuating assembly is arranged in the pivot region (M), and a touring position, in which the actuating element (56) of the actuating assembly is arranged outside the pivot region (M).
6. Front unit (10) according to claim 5, characterised in that the front unit (10) comprises a disengaging mechanism (84, 86),
   the disengaging mechanism (84, 86) being adjusted or adjustable in the downhill position into an active position, such that when a force that exceeds a predetermined disengaging force acts between the gliding board boot (12) and the front unit (10), the clamping assembly is adjusted into the release position, in order to release the gliding board boot (12) from the front unit (10),
   the disengaging mechanism (84, 86) being adjusted or adjustable in the touring position into a locked position (88, 90), so as to prevent the gliding board boot (12) from being released, and
   adjusting the actuating element (56) from the downhill position into the touring position causing the disengaging mechanism (84, 86) to be adjusted from the active position into the locked position (88, 90).
7. Front unit (10) according to any of the preceding claims, characterised in that in a downhill position, the front unit (10) is designed to clamp the gliding board boot (12) such that said boot is pivotable about a substantially vertical axis (V).

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