EP0371518B1 - Fornt jaws for safety ski bindings - Google Patents

Fornt jaws for safety ski bindings Download PDF

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Publication number
EP0371518B1
EP0371518B1 EP89123865A EP89123865A EP0371518B1 EP 0371518 B1 EP0371518 B1 EP 0371518B1 EP 89123865 A EP89123865 A EP 89123865A EP 89123865 A EP89123865 A EP 89123865A EP 0371518 B1 EP0371518 B1 EP 0371518B1
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EP
European Patent Office
Prior art keywords
lever
sole
crank levers
clamp assembly
balance lever
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89123865A
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German (de)
French (fr)
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EP0371518A3 (en
EP0371518A2 (en
Inventor
Karl Stritzl
Henry Freisinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HTM Sport und Freizeitgerate GmbH
Original Assignee
HTM Sport und Freizeitgerate GmbH
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Publication date
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Publication of EP0371518A2 publication Critical patent/EP0371518A2/en
Publication of EP0371518A3 publication Critical patent/EP0371518A3/en
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Publication of EP0371518B1 publication Critical patent/EP0371518B1/en
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Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/001Anti-friction devices
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08507Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws
    • A63C9/08521Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws pivoting about a vertical axis, e.g. side release
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08535Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw
    • A63C9/08542Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw pivoting about a transversal axis
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/08Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/085Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08557Details of the release mechanism
    • A63C9/08564Details of the release mechanism using cam or slide surface
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C9/00Ski bindings
    • A63C9/005Ski bindings with means for adjusting the position of a shoe holder or of the complete binding relative to the ski

Definitions

  • the invention relates to a toe piece according to the first part of claim 1 or 4.
  • a toe piece according to the first part of claim 1 is described in AT-B-368 396. Although this toe piece has proven itself in practice, the gear ratio with which the force exerted on the sole hold-down device when the skier falls backwards is used to compress the compression spring is already determined by the dimensions of the toe piece. Due to the arrangement of intermediate levers, which are provided between the lever arms of the compensating lever and the angle levers, the force to be applied by the compensating lever to the angle lever can be kept as low as possible, but the compensating lever only acts on the compression spring via the angle lever.
  • the object of the invention is to eliminate these disadvantages and to provide a toe piece in which the above-mentioned transmission ratio can be changed within relatively wide limits and in a simple arrangement of power transmission elements.
  • the solution specified in claim 2 has the advantage of a simple structure.
  • a toe piece according to the first part of claim 4 is similar to that according to claim 1, but with the difference that the compression spring is not penetrated by a pull rod on which the support plate would be arranged.
  • the characterizing part of claim 4 is made possible to vary the translation ratio to a greater extent than in the first embodiment by shifting the pivot axis for the compensating lever.
  • the measure of claim 5 ensures reliable storage and operation of the compensating lever.
  • the features of claim 6 allow a separate adjustment of the transmission ratio of the release force between the two angle levers and the sole hold-down.
  • the measure of claim 7 enables simple mounting of the sole hold-down device.
  • the structure of the toe is made more compact, which additionally results in a favorable power transmission from the sole hold-down device via the pressure pin to the compensating lever.
  • the features of claim 9 have the advantage that digging the pressure pin into the sole hold-down is not to be feared, since the cam can be hardened.
  • the features of claim 10 offer similar advantages for the two angle levers.
  • FIG. 1 is a section along the line I-I in FIG. 2 through a first embodiment and FIG. 2 is a section along the line II-II in FIG. 1.
  • Figure 3 a second embodiment is shown in the vertical longitudinal central section and Figure 4 is a section through a detail along the line IV-IV in Figure 3.
  • the front jaw is designated 1 in its entirety. It has an approximately angular support body 2 in side view, of which the horizontal leg 2a forms a tread plate and the other leg 2b extends vertically to the top of the ski and carries a spring housing 3 which extends towards the ski tip. At the top In the region of the support body 2, an axis 4 is fastened in the leg 2b and runs in the cross-ski direction. An angular lever 5 assigned to a sole hold-down 7 is mounted on this axis 4.
  • the leg 5a of the angle lever 5, which runs parallel to the upper side of the ski, is fork-shaped and, with the two fork tines, comprises the head 6a of an adjusting screw 6, the lower end of which is guided in a bore 2c of the horizontal leg 2a.
  • the sole hold-down 7 is screwed onto the set screw 6 with a threaded bore.
  • the horizontal leg 2a of the supporting body 2 carries two vertical axes 8 at a lateral distance from the vertical longitudinal center plane of the toe piece 1, on which angle levers 9 are mounted, which serve to hold the sole of the shoe of a shoe to be inserted in the toe pieces 1 laterally.
  • Rollers 14 are mounted in the angle levers 9, which reduce the friction between the shoe sole and the angle lever 9 to be deflected when triggered laterally.
  • a compression spring 10 is accommodated, which runs in the longitudinal direction of the ski and is penetrated by a pull rod 11.
  • This carries a support plate 12 at its end adjacent to the ski boot.
  • the pull rod 11 carries an adjusting screw which serves to support the compression spring 10 and to adjust its pretension.
  • This configuration is already known in front jaws of this type and is therefore not shown in the drawing for this reason.
  • a tension towards the ski tip is exerted on the support plate 12 by the compression spring 10.
  • a compensating lever 13 is arranged between the support plate 12 and the two angle levers 9.
  • the support plate 12 rests on one side of the compensating lever 13, whereas the other side of the compensating lever 13 bears on the one hand at the ends of the two angle levers 9 and on the other hand on the leg 5b of the angle lever 5 facing away from the sole hold-down 7.
  • the two ends of the angle lever 9 are pressed by the compression spring 10 against the vertical leg 2b of the support body 2.
  • the tie rod 11 passes through a bore 2d in the vertically extending leg 2b of the support body 2, and an oblique bore 13a in the compensating lever 13. Due to the last-mentioned oblique bore 13a, the compensating lever 13 is pivoted without tilting due to the bevel and the ample play Angle relative to the tie rod 11 possible.
  • the toe 1 ' differs from the first embodiment, among others. characterized in that the support body 2 'and spring housing are integrally formed. Furthermore, the sole hold-down 7 'is itself designed as an angle lever which is pivotally mounted with its forked leg on an axis 7'a on the support body 2'. The axis 7'a is arranged in a shoulder 2'e of the support body 2 '. The two angle levers 9 ', which serve to hold the shoe sole on the side, are seated on a common axis 9'a.
  • the axis 7'a of the sole hold-down 7 ' is located above the common axis 9'a of the two angle levers 9'.
  • the compensating lever 13 ' is housed inside the support body 2'. It is acted upon by two pressure pins 20 and 21, which are guided in recesses in the supporting body 2 ' are that run in the axial direction. These two recesses are arranged one above the other in the vertical longitudinal center plane of the support body 2 '.
  • the upper pressure pin 20 abuts a cam 7'b of the sole hold-down 7 ', whereas the lower pressure pin 21 carries a plate 22 on which two cams 9'b of the two angle levers 9' rest.
  • the support body 2 ' also has a bore 23 in which a piston 24 is guided, which is acted upon by a helical compression spring 10'.
  • the outer wall of the piston 24 has a groove 24a running in the ski transverse direction, in which engages a rib 13'a of the compensating lever 13 'which is semicircular in cross section.
  • a bevel 24b of the outer wall of the piston 24 adjoins the groove 24a.
  • the two angle levers 9 ' are articulated to one another in the manner of a hinge which is mounted on the common axis 9'a.
  • 25 is a spacer sleeve which defines the distance between the two angle levers 9 'relative to the support body 2'.
  • the operation of the toe 1 ' is similar to that of the first embodiment.
  • one of the two angle levers 9 ' is pivoted outwards.
  • the swing-out angle lever 9 ' acts on the compression spring 10' via the plate 22, the pressure pin 21, the compensating lever 13 'and the piston 24.
  • the sole hold-down 7 ' is pivoted counterclockwise.
  • the upper pressure pin 20 is displaced towards the ski tip, which results in pivoting of the compensating lever 13 'and thus compression of the helical compression spring 10'.
  • the invention is not tied to the exemplary embodiments shown in the drawing and described above. Rather, various modifications thereof are possible without leaving the scope of the invention.
  • they can be in the axial direction of the toe piece extending recesses for the two pins can be arranged by the designer within certain limits higher or lower than shown to vary the ratio of the two lever arms of the compensating lever.

Description

Die Erfindung bezieht sich auf einen Vorderbacken gemäß dem ersten Teil des Anspruches 1 oder 4.The invention relates to a toe piece according to the first part of claim 1 or 4.

Ein Vorderbacken nach dem ersten Teil des Anspruches 1 ist in der AT-B-368 396 beschrieben. Dieser Vorderbacken hat sich zwar in der Praxis bewährt, jedoch ist bei ihm das Übersetzungsverhältnis, mit dem die bei einem Rückwärtssturz des Skiläufers auf den Sohlenniederhalter ausgeübte Kraft zur Kompression der Druckfeder herangezogen wird, durch die Abmessungen des Vorderbackens bereits festgelegt. Durch die Anordnung von Zwischenhebeln, die zwischen den Hebelarmen des Ausgleichshebels und den Winkelhebeln vorgesehen sind, kann zwar die vom Ausgleichshebel auf die Winkelhebel aufzubringende Kraft möglichst gering gehalten werden, jedoch wirkt der Ausgleichshebel nur über die Winkelhebel auf die Druckfeder.A toe piece according to the first part of claim 1 is described in AT-B-368 396. Although this toe piece has proven itself in practice, the gear ratio with which the force exerted on the sole hold-down device when the skier falls backwards is used to compress the compression spring is already determined by the dimensions of the toe piece. Due to the arrangement of intermediate levers, which are provided between the lever arms of the compensating lever and the angle levers, the force to be applied by the compensating lever to the angle lever can be kept as low as possible, but the compensating lever only acts on the compression spring via the angle lever.

Die Erfindung stellt sich die Aufgabe, diese Nachteile zu beseitigen und einen Vorderbacken zu schaffen, bei dem das genannte Übersetzungsverhältnis in relativ weiten Grenzen und in einfacher Anordnung von Kraftübertragungselementen verändert werden kann.The object of the invention is to eliminate these disadvantages and to provide a toe piece in which the above-mentioned transmission ratio can be changed within relatively wide limits and in a simple arrangement of power transmission elements.

Ausgehend von einem Vorderbacken nach dem ersten Teil des Anspruches 1 wird diese Aufgabe durch den kennzeichnenden Teil dieses Anspruches gelöst. Dadurch, daß der Ausgleichshebel an der Stützplatte anliegt, läßt sich das Übersetzungsverhältnis vom Konstrukteur in großem Ausmaß variieren.Starting from a toe piece according to the first part of claim 1, this object is achieved by the characterizing part of this claim. Due to the fact that the compensating lever rests on the support plate, the gear ratio can be varied by the designer to a large extent.

Die im Anspruch 2 angegebene Lösung hat den Vorteil eines einfachen Aufbaues.The solution specified in claim 2 has the advantage of a simple structure.

Der Gegenstand des Anspruches 3 ermöglicht auf einfache Weise eine zuverlässige Lagerung des Ausgleichshebels an der Zugstange.The subject matter of claim 3 enables a reliable mounting of the compensating lever on the pull rod in a simple manner.

Ein Vorderbacken nach dem ersten Teil des Anspruches 4 ist jenen nach dem Anspruch 1 ähnlich, jedoch mit dem Unterschied, daß die Druckfeder von keiner Zugstange durchsetzt ist, an welcher die Stützplatte angeordnet wäre. Durch den kennzeichnenden Teil des Anspruches 4 wird ermöglicht, durch Verlagerung der Schwenkachse für den Ausgleichshebel das Übersetzungsverhälnis in größerem Umfang als bei der ersten Ausgestaltung zu variieren.A toe piece according to the first part of claim 4 is similar to that according to claim 1, but with the difference that the compression spring is not penetrated by a pull rod on which the support plate would be arranged. By the characterizing part of claim 4 is made possible to vary the translation ratio to a greater extent than in the first embodiment by shifting the pivot axis for the compensating lever.

Durch die Maßnahme des Anspruches 5 wird eine zuverläßige Lagerung und Wirkungsweise des Ausgleichshebels gewährleistet.The measure of claim 5 ensures reliable storage and operation of the compensating lever.

Die Merkmale des Anspruches 6 ermöglichen eine gesonderte Anpassung des Übersetzungsverhältnisses der Auslösekraft zwischen den beiden Winkelhebeln und dem Sohlenniederhalter.The features of claim 6 allow a separate adjustment of the transmission ratio of the release force between the two angle levers and the sole hold-down.

Durch die Maßnahme des Anspruches 7 wird eine einfache Lagerung des Sohlenniederhalters ermöglicht.The measure of claim 7 enables simple mounting of the sole hold-down device.

Durch den Gegenstand des Anspruches 8 wird der Aufbau des Vorderbackens kompakter, wobei sich zusätzlich eine günstige Kraftübertragung vom Sohlenniederhalter über den Druckstift auf den Ausgleichshebel ergibt.Due to the subject matter of claim 8, the structure of the toe is made more compact, which additionally results in a favorable power transmission from the sole hold-down device via the pressure pin to the compensating lever.

Die Merkmale des Anspruches 9 haben den Vorteil, daß ein Eingraben des Druckstiftes in den Sohlenniederhalter nicht zu befürchten ist, da der Nocken gehärtet werden kann. Ähnliche Vorteile bieten die Merkmale des Anspruches 10 für die beiden Winkelhebel.The features of claim 9 have the advantage that digging the pressure pin into the sole hold-down is not to be feared, since the cam can be hardened. The features of claim 10 offer similar advantages for the two angle levers.

In der Zeichnung sind zwei beispielsweise Ausführungsformen von erfindungsgemäßen Vorderbacken rein schematisch dargestellt. Fig.1 ist ein Schnitt nach der Linie I-I in Fig.2 durch eine erste Ausführungsform und Fig.2 ein Schnitt nach der Linie II-II in Fig.1. In Fig.3 ist eine zweite Ausführungsform im vertikalen Längsmittelschnitt wiedergegeben und Fig.4 ist ein Schnitt durch ein Detail nach der Linie IV-IV in Fig.3.In the drawing, two exemplary embodiments of front jaws according to the invention are shown purely schematically. 1 is a section along the line I-I in FIG. 2 through a first embodiment and FIG. 2 is a section along the line II-II in FIG. 1. In Figure 3, a second embodiment is shown in the vertical longitudinal central section and Figure 4 is a section through a detail along the line IV-IV in Figure 3.

In den Fig.1 und 2 ist der Vorderbacken in seiner Gesamtheit mit 1 bezeichnet. Er besitzt einen in Seitenansicht etwa winkelförmigen Tragkörper 2, von dem der horizontale Schenkel 2a eine Trittplatte bildet und der andere Schenkel 2b vertikal zur Skioberseite verläuft und ein Federgehäuse 3 trägt, das sich gegen die Skispitze hin erstreckt. Im oberen Bereich des Tragkörpers 2 ist im Schenkel 2b eine Achse 4 befestigt, welche in Skiquerrichtung verläuft. Auf dieser Achse 4 ist ein einem Sohlenniederhalter 7 zugeordneter Winkelhebel 5 gelagert. Der parallel zur Skioberseite verlaufende Schenkel 5a des Winkelhebels 5 ist gabelförmig ausgebildet und umfaßt mit den beiden Gabelzinken den Kopf 6a einer Stellschraube 6, deren unteres Ende in einer Bohrung 2c des horizontalen Schenkels 2a geführt wird. Auf die Stellschraube 6 ist der Sohlenniederhalter 7 mit einer Gewindebohrung aufgeschraubt. Weiters trägt der horizontale Schenkel 2a des Tragkörpers 2 in seitlichem Abstand von der vertikalen Längsmittelebene des Vorderbackens 1 zwei vertikale Achsen 8, auf denen Winkelhebel 9 gelagert sind, die zur seitlichen Halterung der Schuhsohle eines in den Vorderbacken 1 einzusetzenden Schuhs dienen. In den Winkelhebeln 9 sind Rollen 14 gelagert, welche bei einer seitlichen Auslösung die Reibung zwischen der Schuhsohle und dem auszulenkenden Winkelhebel 9 herabsetzen.1 and 2, the front jaw is designated 1 in its entirety. It has an approximately angular support body 2 in side view, of which the horizontal leg 2a forms a tread plate and the other leg 2b extends vertically to the top of the ski and carries a spring housing 3 which extends towards the ski tip. At the top In the region of the support body 2, an axis 4 is fastened in the leg 2b and runs in the cross-ski direction. An angular lever 5 assigned to a sole hold-down 7 is mounted on this axis 4. The leg 5a of the angle lever 5, which runs parallel to the upper side of the ski, is fork-shaped and, with the two fork tines, comprises the head 6a of an adjusting screw 6, the lower end of which is guided in a bore 2c of the horizontal leg 2a. The sole hold-down 7 is screwed onto the set screw 6 with a threaded bore. Furthermore, the horizontal leg 2a of the supporting body 2 carries two vertical axes 8 at a lateral distance from the vertical longitudinal center plane of the toe piece 1, on which angle levers 9 are mounted, which serve to hold the sole of the shoe of a shoe to be inserted in the toe pieces 1 laterally. Rollers 14 are mounted in the angle levers 9, which reduce the friction between the shoe sole and the angle lever 9 to be deflected when triggered laterally.

Im Federgehäuse 3 ist eine Druckfeder 10 untergebracht, die in Skilängsrichtung verläuft und von einer Zugstange 11 durchsetzt wird. Diese trägt an ihrem dem Skischuh benachbarten Ende eine Stützplatte 12. An ihrem anderen Ende trägt die Zugstange 11 eine Stellschraube, welche zur Abstützung der Druckfeder 10 und Einstellung von deren Vorspannung dient. Diese Ausgestaltung ist bei derartigen Vorderbacken bereits bekannt und aus diesem Grund in der Zeichnung nicht dargestellt. Auf die Stützplatte 12 wird von der Druckfeder 10 ein Zug zur Skispitze hin ausgeübt. Zwischen der Stützplatte 12 und den beiden Winkelhebeln 9 ist ein Ausgleichshebel 13 angeordnet. An der einen Seite des Ausgleichshebels 13 liegt die Stützplatte 12 an, wogegen die andere Seite des Ausgleichshebels 13 einerseits an den Enden der beiden Winkelhebel 9 und anderseits an dem dem Sohlenniederhalter 7 abgewandten Schenkel 5b des Winkelhebels 5 anliegt. Die beiden Enden der Winkelhebel 9 werden dabei von der Druckfeder 10 gegen den vertikalen Schenkel 2b des Tragkörpers 2 gedrückt. Die Zugstange 11 durchsetzt eine Bohrung 2d im vertikal verlaufenden Schenkel 2b des Tragkörpers 2, sowie eine schräge Bohrung 13a in dem Ausgleichshebel 13. Durch die zuletzt angeführte schräge Bohrung 13a ist infolge der Schräge und des reichlichen Spiels ein verkantenfreies Verschwenken des Ausgleichshebels 13 innerhalb eines vorgegebenen Winkels gegenüber der Zugstange 11 möglich.In the spring housing 3, a compression spring 10 is accommodated, which runs in the longitudinal direction of the ski and is penetrated by a pull rod 11. This carries a support plate 12 at its end adjacent to the ski boot. At its other end, the pull rod 11 carries an adjusting screw which serves to support the compression spring 10 and to adjust its pretension. This configuration is already known in front jaws of this type and is therefore not shown in the drawing for this reason. A tension towards the ski tip is exerted on the support plate 12 by the compression spring 10. A compensating lever 13 is arranged between the support plate 12 and the two angle levers 9. The support plate 12 rests on one side of the compensating lever 13, whereas the other side of the compensating lever 13 bears on the one hand at the ends of the two angle levers 9 and on the other hand on the leg 5b of the angle lever 5 facing away from the sole hold-down 7. The two ends of the angle lever 9 are pressed by the compression spring 10 against the vertical leg 2b of the support body 2. The tie rod 11 passes through a bore 2d in the vertically extending leg 2b of the support body 2, and an oblique bore 13a in the compensating lever 13. Due to the last-mentioned oblique bore 13a, the compensating lever 13 is pivoted without tilting due to the bevel and the ample play Angle relative to the tie rod 11 possible.

In der Fahrtstellung des Vorderbackens 1 nehmen alle Teile desselben die in den Figuren 1 und 2 dargestellte Lage ein. Erfolgt während der Fahrt ein reiner Drehsturz des Skiläufers, so wird der eine der beiden Winkelhebel 9 nach außen verschwenkt, was eine Bewegung der Zugstange 11 in den Figuren 1 und 2 nach rechts und eine Kompression der Druckfeder 10 zur Folge hat. Findet jedoch während der Fahrt ein Drehsturz des Skiläufers nach rückwärts statt, so wird der dem Sohlenniederhalter 7 zugeordnete Winkelhebel 5 entgegen dem Uhrzeigersinn verschwenkt. Dies hat aber ein Verschwenken des Ausgleichshebels 13 und damit eine vergrößerte Vorspannung der Druckfeder 10 zur Folge. Die von den beiden Winkelhebeln 9 bei einer seitlichen Auslösung zu leistende Federarbeit wird dadurch reduziert.In the driving position of the toe piece 1, all parts of the same take the position shown in FIGS. 1 and 2. If the skier is merely tumbled while driving, then one of the two angle levers 9 is pivoted outwards, which results in a movement of the pull rod 11 in FIGS. 1 and 2 to the right and a compression of the compression spring 10. However, if the skier falls backwards while driving, the angle lever 5 assigned to the sole hold-down 7 is pivoted counterclockwise. But this has a pivoting of the compensating lever 13 and thus an increased bias of the compression spring 10 result. The spring work to be performed by the two angle levers 9 in the event of a lateral triggering is thereby reduced.

Der Vorderbacken 1' gemäß den Figuren 3 und 4 unterscheidet sich von der ersten Ausführung u.a. dadurch, daß Tragkörper 2' und Federgehäuse einstückig ausgebildet sind. Ferner ist der Sohlenniederhalter 7' selbst als Winkelhebel ausgebildet, der mit seinem gegabelten Schenkel auf einer Achse 7'a am Tragkörper 2' schwenkbar gelagert ist. Die Achse 7'a ist in einem Ansatz 2'e des Tragkörpers 2' angeordnet. Die beiden Winkelhebel 9', welche zur seitlichen Halterung der Schuhsohle dienen, sitzen auf einer gemeinsamen Achse 9'a.The toe 1 'according to Figures 3 and 4 differs from the first embodiment, among others. characterized in that the support body 2 'and spring housing are integrally formed. Furthermore, the sole hold-down 7 'is itself designed as an angle lever which is pivotally mounted with its forked leg on an axis 7'a on the support body 2'. The axis 7'a is arranged in a shoulder 2'e of the support body 2 '. The two angle levers 9 ', which serve to hold the shoe sole on the side, are seated on a common axis 9'a.

Die Achse 7'a des Sohlenniederhalters 7' befindet sich oberhalb der gemeinsamen Achse 9'a der beiden Winkelhebel 9'. Der Ausgleichshebel 13' ist im Inneren des Tragkörpers 2' untergebracht. Er wird von zwei Druckstiften 20 und 21 beaufschlagt, welche in Ausnehmungen des Tragkörpers 2' geführt sind, die in Achsrichtung verlaufen. Diese beiden Ausnehmungen sind in der vertikalen Längsmittelebene des Tragkörpers 2' übereinander angeordnet. Der obere Druckstift 20 liegt an einem Nocken 7'b des Sohlenniederhalter 7' an, wogegen der untere Druckstift 21 eine Platte 22 trägt, an der zwei Nocken 9'b der beiden Winkelhebel 9' anliegen.The axis 7'a of the sole hold-down 7 'is located above the common axis 9'a of the two angle levers 9'. The compensating lever 13 'is housed inside the support body 2'. It is acted upon by two pressure pins 20 and 21, which are guided in recesses in the supporting body 2 ' are that run in the axial direction. These two recesses are arranged one above the other in the vertical longitudinal center plane of the support body 2 '. The upper pressure pin 20 abuts a cam 7'b of the sole hold-down 7 ', whereas the lower pressure pin 21 carries a plate 22 on which two cams 9'b of the two angle levers 9' rest.

Der Tragkörper 2' weist ferner eine Bohrung 23 auf, in der ein Kolben 24 geführt ist, welcher von einer Schraubendruckfeder 10' beaufschlagt wird. Die Außenwand des Kolbens 24 weist eine in Skiquerrichtung verlaufende Nut 24a auf, in der eine im Querschnitt halbkreisförmige Rippe 13'a des Ausgleichshebels 13' eingreift. An die Nut 24a schließt sich eine Abschrägung 24b der Außenwand des Kolbens 24 an. Die beiden Winkelhebel 9' sind nach Art eines Scharniers aneinander angelenkt, das auf der gemeinsamen Achse 9'a gelagert ist. Mit 25 ist eine Distanzhülse bezeichnet, welche den Abstand der beiden Winkelhebel 9' gegenüber dem Tragkörper 2' festlegt.The support body 2 'also has a bore 23 in which a piston 24 is guided, which is acted upon by a helical compression spring 10'. The outer wall of the piston 24 has a groove 24a running in the ski transverse direction, in which engages a rib 13'a of the compensating lever 13 'which is semicircular in cross section. A bevel 24b of the outer wall of the piston 24 adjoins the groove 24a. The two angle levers 9 'are articulated to one another in the manner of a hinge which is mounted on the common axis 9'a. 25 is a spacer sleeve which defines the distance between the two angle levers 9 'relative to the support body 2'.

Die Arbeitsweise des Vorderbackens 1' ist der der ersten Ausführung ähnlich. Bei einem reinen Drehsturz des Skiläufers wird einer der beiden Winkelhebel 9' nach außen verschwenkt. Dabei beaufschlagt der ausschwenkbare Winkelhebel 9' über die Platte 22, den Druckstift 21, den Ausgleichshebel 13' und den Kolben 24 die Druckfeder 10'. Findet während der Fahrt des Skiläufers jedoch ein Drehsturz nach rückwärts statt, so wird der Sohlenniederhalter 7' entgegen dem Uhrzeigersinn verschwenkt. Dadurch wird aber der obere Druckstift 20 zur Skispitze hin verschoben, was ein Verschwenken des Ausgleichshebels 13' und damit eine Kompression der Schraubendruckfeder 10' zur Folge hat.The operation of the toe 1 'is similar to that of the first embodiment. In the event of a skid of the skier, one of the two angle levers 9 'is pivoted outwards. The swing-out angle lever 9 'acts on the compression spring 10' via the plate 22, the pressure pin 21, the compensating lever 13 'and the piston 24. However, if the skier falls backwards while the skier is traveling, the sole hold-down 7 'is pivoted counterclockwise. As a result, however, the upper pressure pin 20 is displaced towards the ski tip, which results in pivoting of the compensating lever 13 'and thus compression of the helical compression spring 10'.

Die Erfindung ist nicht an die in der Zeichnung dargestellten und im vorstehenden beschriebenen Ausführungsbeispiele gebunden. Vielmehr sind verschiedene Abänderungen derselben möglich, ohne den Rahmen der Erfindung zu verlassen. Beispielsweise können beim Ausführungsbeispiel gemäß den Figuren 3 und 4 die sich in Achsrichtung des Vorderbackens erstreckenden Ausnehmungen für die beiden Stifte vom Konstrukteur innerhalb gewisser Grenzen auch höher oder tiefer als dargestellt angeordnet werden, um das Verhältnis der beiden Hebelarme des Ausgleichshebel zu variieren. Weiters liegt es im Rahmen der Erfindung, die Rippe an der Außenwand des Kolbens anzuordnen und die Nut am Ausgleichshebel auszubilden.The invention is not tied to the exemplary embodiments shown in the drawing and described above. Rather, various modifications thereof are possible without leaving the scope of the invention. For example, in the exemplary embodiment according to FIGS. 3 and 4, they can be in the axial direction of the toe piece extending recesses for the two pins can be arranged by the designer within certain limits higher or lower than shown to vary the ratio of the two lever arms of the compensating lever. Furthermore, it is within the scope of the invention to arrange the rib on the outer wall of the piston and to form the groove on the compensating lever.

Claims (10)

  1. A front clamp assembly (1) comprising a housing (3) provided with a mounting body (2) and having rotatably mounted therein on two vertical pivot pins (8) a pair of crank levers (9) for laterally engaging the sole of a boot to be inserted therebetween, a sole clamp-down member (7), and a compression spring (10) accommodated in said housing (3) with a tie rod (11) extending therethrough and having its end directed towards said two crank levers (9) provided with an abutment plate (12) on which said crank levers (9) take support, said compression spring (10) acting to maintain both said two crank levers (9) and said sole clamp-down member (7) in the skiing position by the intermediary of a balance lever (13), said balance lever (13) being effective to differentiate the transmission ratio of the force of said compression spring (10) acting on said sole clamp-down member (7) and said two crank levers (9), respectively, characterized in that said balance lever (13) is formed as a two-armed lever with one of its arms engaging said abutment plate (12) (figs. 1 and 2).
  2. A front clamp assembly according to claim 1, characterized in that said arm of said balance lever (13) engaging said abutment plate (12) of said tie rod (11) is also in engagement with the ends of said two crank levers (9), and that the other arm of said balance lever (13) engages one end of a further crank lever (5) carrying said sole clamp-down member (7).
  3. A front clamp assembly according to claim 2, characterized in that said balance lever (13) is formed with a bore (13a) for receiving said tie rod (11) therein, said bore (13a) extending obliquely in the normal state of said front clamp assembly (1) to permit said balance lever (13) to pivot about a predetermined angle without tilting said tie rod (11).
  4. A front clamp assembly (1') comprising a housing (3') provided with a mounting body (2') and having rotatably mounted therein on a vertical pivot pin (9'a) a pair of crank levers (9') for laterally engaging the sole of a boot to be inserted therebetween, a sole clamp-down member (7'), and a compression spring (10') accommodated in said housing (3') and acting to maintain both said two crank levers (9') and said sole clamp-down member (7') in the skiing position by the intermediary of a balance lever (13') effective to differentiate the transmission ratio of the force of said compression spring (10') acting on said sole clamp-down member (7') and said two crank levers (9'), respectively, characterized in that said balance lever (13') is formed as a two-armed lever and takes support on a piston (24) directly subjected to the action of said compression spring (10'), and that said balance lever (13') has its side facing said piston (24) provided with a rib (13'a) extending transversely of the axis of said piston (24) (figs. 3 and 4).
  5. A front clamp assembly according to claim 4, characterized in that said piston (24) has its outer wall formed with a groove (24a) extending in the transverse direction of the ski for receiving therein said rib (13'a) of said balance lever (13'), and a chamfered outer wall portion (24b) contiguous with said groove (24a).
  6. A front clamp assembly according to claim 4, characterized in that said piston (24) is guided in a bore (23) in said housing (3') in the longitudinal direction thereof, and that said balance lever (13') supported on said piston (24) is operatively connected to said two crank levers (9') and to said sole clampdown member (7'), respectively, by a respective pusher pin (20, 21) mounted for displacement in the direction of the axis of said piston (24), said two pusher pins (20, 21) being disposed above one another.
  7. A front clamp assembly according to claim 6, characterized in that as viewed in vertical longitudinal center section, said sole clamp-down member (7') is formed as a crank lever mounted by the preferably bifurcate end of one of its lever arms on a transverse pivot pin (7'a) secured to said housing (3').
  8. A front clamp assembly according to claim 7, characterized in that said transverse pivot pin (7'a) is located above said pivot pin (9'a) for said two crank levers (9').
  9. A front clamp assembly according to claim 7 or 8, characterized in that said sole clamp-down member (7') is provided with a cam portion (7'b) devised for engagement with said pusher pin (20).
  10. A front clamp assembly according to claim 6, characterized in that the lower pusher pin (21) carries a plate (22) engaged by two cam portions (9'b) of said two crank levers (9').
EP89123865A 1986-06-27 1987-05-14 Fornt jaws for safety ski bindings Expired - Lifetime EP0371518B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0175586A AT385673B (en) 1986-06-27 1986-06-27 FRONT JAWS FOR SAFETY SKI BINDINGS
AT1755/86 1986-06-27

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP87106985.2 Division 1987-05-14

Publications (3)

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EP0371518A2 EP0371518A2 (en) 1990-06-06
EP0371518A3 EP0371518A3 (en) 1990-12-12
EP0371518B1 true EP0371518B1 (en) 1993-07-21

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Application Number Title Priority Date Filing Date
EP87106985A Expired - Lifetime EP0250809B1 (en) 1986-06-27 1987-05-14 Front yaws for safety ski bindings
EP89123865A Expired - Lifetime EP0371518B1 (en) 1986-06-27 1987-05-14 Fornt jaws for safety ski bindings

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP87106985A Expired - Lifetime EP0250809B1 (en) 1986-06-27 1987-05-14 Front yaws for safety ski bindings

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EP (2) EP0250809B1 (en)
AT (2) AT385673B (en)
DE (2) DE3786675D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2613949B1 (en) * 1987-04-15 1991-11-08 Gestion Ste Tech Sarl Et SKI FASTENING DEVICE WITH AUTOMATIC SHOE
FR2640516B1 (en) * 1988-12-16 1991-03-29 Salomon Sa SKI SAFETY ATTACHMENT FOR TRIGGERING THE FRONT OF A SHOE MOUNTED ON THE SKI
AT396067B (en) * 1989-09-01 1993-05-25 Tyrolia Freizeitgeraete FRONT JAW
FR2926026B1 (en) * 2008-01-09 2010-04-02 Rossignol Sa DEVICE FOR RETAINING A SHOE ON A SNOWBOARD BOARD.
CN113599857B (en) * 2021-08-06 2022-11-25 无棣永利盐业有限公司 Salt field crystallization smashing device utilizing wind energy

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT359893B (en) * 1973-10-23 1980-12-10 Salomon & Fils F SAFETY BINDING
DE2835732C3 (en) * 1978-08-16 1981-03-19 Geze Gmbh, 7250 Leonberg Safety ski bindings
FR2464727A1 (en) * 1979-09-14 1981-03-20 Look Sa STOP FRONT OF SKI FIXING
FR2469189B1 (en) * 1979-11-13 1985-10-25 Look Sa FRONT STOP OF SKI BINDING
AT368396B (en) * 1980-07-24 1982-10-11 Tyrolia Freizeitgeraete TO BAKE

Also Published As

Publication number Publication date
ATA175586A (en) 1987-10-15
AT385673B (en) 1988-05-10
EP0250809A3 (en) 1988-10-19
ATA40687A (en) 1988-02-15
AT386539B (en) 1988-09-12
EP0250809A2 (en) 1988-01-07
EP0250809B1 (en) 1990-12-27
DE3786675D1 (en) 1993-08-26
DE3767050D1 (en) 1991-02-07
EP0371518A3 (en) 1990-12-12
EP0371518A2 (en) 1990-06-06

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