EP0264436B1 - Safety fastener for skis, in particular heel fastener - Google Patents

Abstract

PCT No. PCT/EP87/00230 Sec. 371 Date Dec. 18, 1987 Sec. 102(e) Date Dec. 18, 1987 PCT Filed Apr. 28, 1987 PCT Pub. No. WO87/06485 PCT Pub. Date Nov. 5, 1987.The present invention relates to a heel-holder for a safety ski binding, the heel-holder comprising a snap-in device and a sole-holder vertically pivotable about a cross-pin disposed in a housing. The housing is horizontally pivotable about a raised pin formed on a base plate which is mounted on a ski. The snap-in device is loaded by a spring. The snap-in device includes a snap-in rocker pivotably mounted on the housing and a control member pivotably mounted on the snap-in rocker. The snap-in rocker engages a control cam formed on the sole-holder, and the control member engages an extension of the base plate. The spring loads the snap-in device and applies a force for releasing the binding. The snap-in device reduces the spring force required for releasing the binding during both the vertical pivoting of the sole-holder and the horizontal pivoting of the housing. According to further embodiments, the base plate extension may be fixed to a pivot plate which is supported on the base plate and which is horizontally pivotable with respect to the ski.

Description

The invention relates to a safety ski binding, in particular heel holder, according to the preamble of claim 1.

A heel holder of the type mentioned is described in DE-OS 17 03 719. This version is a safety ski binding that releases the shoe in both the vertical and horizontal directions. This binding has a spring-loaded locking device which interacts with two locking elements. One of these locking elements blocks the movement of the binding upwards, the other locking element prevents the movement to the side. If a load occurs in one direction, the associated latching element presses the latching device back against the force of the spring and thereby reduces the spring force necessary for triggering when pivoting in the direction perpendicular thereto. Moving the locking device in one direction loosens the locking in the direction perpendicular thereto, since the locking device moves away from the associated locking element. When using a single latching device, which interacts both with a latching element for the vertical movement and with a latching element for the horizontal movement, there are fundamental difficulties in coordinating the two latches.

AT-PS 380 174 shows a heel holder which shows a housing with a latching device which can be pivoted about a vertical axis fixed to the base plate against the force of a spring. The latching device consists of two levers, both of which are articulated on the housing on the same axis, the lever controlling the horizontal pivoting being accommodated in a recess of the lever controlling the vertical pivoting. The lever which controls the horizontal pivoting is supported resiliently on the housing and carries a control cam which interacts with a roller mounted on an extension of the ski-fixed base plate. Thus there are actually three springs in this known solution.

The invention has for its object to provide a safety ski binding of the type mentioned, which has a controlled vertical and diagonal release, without having the disadvantages of the above solutions.

The set goal is achieved according to the invention by the characterizing features contained in claim 1.

The inventive division of the locking device into a locking rocker and a control member, which represent the locking elements for the vertical and horizontal movement and interact with the sole holder or the extension of the plate, results in a controlled diagonal release. If the heel holder is loaded in the vertical direction, the engagement of the locking element for the horizontal movement with the component of the locking device assigned to it remains upright.

The features of claims 2 and 3 ensure a particularly compact structure of the latching device, consisting of latching arm and control member. In addition, the form of the control gives the designer a free choice when determining the dimensions. A direct power transmission is guaranteed by the features of claim 4. The features of claim 5 serve to optimize the lever transmission in the case of horizontal and vertical triggering.

Preferred features of the extension and the arrangement of extension and control member are protected by the features of claims 6 to 8.

In the technical solution of the diagonal control of a heel holder, as it is protected in claim 1, it depends on the relative movement between the latching device in the housing and the extension on the plate, it being irrelevant whether the extension is fixed and the housing is pivotable or that The housing is ski-proof and the extension is pivotable. For this reason, the plate that carries the extension can be designed as a ski-fixed base plate or as a swivel plate that can be rotated about a ski-fixed vertical axis. The sole holder, which is held in the driving position by the latching device, can be articulated either on the housing or on the plate carrying the extension.

The features of claim 9 enable diagonal control in a heel holder in which the sole holder is articulated on the housing and can be pivoted about a vertical axis of the ski-fixed base plate, the base plate also carrying the extension.

It is also possible to implement a heel holder which is connected to a swivel plate and which, in cooperation with a toe piece, constitutes a so-called center-point binding.

According to the features of claim 10, the housing is provided on a swivel plate rotatable about the vertical axis of the ski-fixed base plate, the sole holder being articulated on the housing and the extension being formed on the base plate.

According to the features of claim 13, particularly favorable leverage results for the arbitrary triggering.

According to the features of claim 11, the housing is integrally formed with the ski-fixed base plate and the extension is provided on the swivel plate rotatably mounted about the vertical axis of the base plate, the sole holder being articulated at the rear end of the swivel plate. The features of claims 12 and 14 characterize in this embodiment an advantageous embodiment of the control cam on Sole holder and allow a perfect arrangement of the release lever.

• Fig. 1 erstes Ausführungsbeispiel einer erfindungsgemäßen Sicherheitsskibindung, insbesondere Fersenhalter, in Fahrtstellung im Längsschnitt
• Fig. 2 Fersenhalter analog Fig. 1 am Auslösepunkt nach vertikaler Verschwenkung
• Fig.2a eine Abwandlung des ersten Ausführungsbeispieles analog zu Fig. 2
• Fig. 3 Draufsicht auf Fersenhalter in Fahrtstellung
• Fig. 4 Fersenhalter nach der Schnittlinie IV-IV in Fig. 1 bei horizontaler Verschwenkung unter Weglassung von Sohlenhalter und Auslösehebel
• Fig. 5 Detail der Steuerung mit zwei Fortsätzen in Fahrtstellung
• Fig. 6 Detail der Steuerung mit zwei Fortsätzen bei horizontaler Verschwenkung
• Fig. 7a-d Rastschwinge und Steuerglied in vergrößertem Maßstab in mehreren Rissen
• Fig. 8 zweites Ausführungsbeispiel eines Fersenhalters in Verbindung mit einer Schwenkplatte in Fahrtstellung im Längsschnitt
• Fig. 9 Draufsicht auf Fersenhalter nach Fig. 8 in Fahrtstellung
• Fig. 10 Fersenhalter nach der Schnittlinie X-X in Fig. 8 bei horizontaler Verschwenkung
• Fig. 11 drittes Ausführungsbeispiel einer kompletten Sicherheitsskibindung, bei dem der Sohlenhalter an der Schwenkplatte angelenkt ist, in Fahrtstellung im Längsschnitt
• Fig. 12 Horizontalschnitt durch die Rastschwinge in der Ebene der Bohrung in vergrößertem Maßstab
• Fig. 13 Draufsicht auf eine Sicherheitsskibindung nach Fig. 11 in Fahrtstellung
• Fig. 14 Sicherheitsskibindung nach der Schnittlinie XIV-XIV in Fig. 11 bei horizontaler Verschwenkung

Further features, advantages and details of the invention will now be described with reference to the drawing, which shows several embodiments. Show it :

• Fig. 1 first embodiment of a safety ski binding according to the invention, in particular heel holder, in the riding position in longitudinal section
• Fig. 2 heel holder analogous to Fig. 1 at the trigger point after vertical pivoting
• 2a shows a modification of the first exemplary embodiment analogous to FIG. 2
• Fig. 3 top view of heel holder in the driving position
• Fig. 4 heel holder according to section line IV-IV in Fig. 1 with horizontal pivoting with the omission of the sole holder and release lever
• Fig. 5 Detail of the control with two extensions in the driving position
• Fig. 6 Detail of the control with two extensions with horizontal pivoting
• Fig. 7a-d locking rocker and control member on an enlarged scale in several cracks
• Fig. 8 second embodiment of a heel holder in connection with a swivel plate in the driving position in longitudinal section
• Fig. 9 top view of the heel holder of FIG. 8 in the driving position
• Fig. 10 heel holder according to section line XX in Fig. 8 with horizontal pivoting
• Fig. 11 third embodiment of a complete safety ski binding, in which the sole holder is articulated on the swivel plate, in the driving position in longitudinal section
• Fig. 12 horizontal section through the locking rocker in the plane of the bore on an enlarged scale
• 13 top view of a safety ski binding according to FIG. 11 in the riding position
• Fig. 14 Safety ski binding along the section line XIV-XIV in Fig. 11 with horizontal pivoting

The first exemplary embodiment according to FIGS. 1 to 7d represents a safety ski binding, in particular a heel holder. According to FIGS. 1 to 4, a base plate 2 is fastened to the top of a ski 1 by means of screws, not shown, which has a vertical axis 3 in its rear region , in the front area carries a circular cross rail 4 and at the front end an extension 5 in the form of a vertical pin which lies in the central longitudinal axis of the base plate 2.

On the vertical axis 3, a housing 6 is pivotally mounted in the rear plane of its base 6a in the horizontal plane, the base 6a being guided in the front in the cross rail 4, as a result of which the housing 6 is secured against being lifted off the base plate 2.

The housing 6 is provided with a locking device 11, 12 acted upon by a spring 7, which comprises a locking rocker 11 and a control element 12. The end of the spring 7 facing away from the latching device 11, 12 is supported on a spring plate 8 which can be adjusted with an adjusting device 9 which can be adjusted in the housing 6 by means of a thread, as a result of which the spring tension is regulated. The other end of the spring 7 is supported on an abutment 10 which is displaceable in the housing 6. At the front end of the housing base 6a, the latching rocker 11, which is designed as a mirror-image L in side view, is fastened with the free end of its vertical bar by means of a pivot axis 13, the vertical bar being designed in its central region as an axis 11a for the control member 12; the end of the horizontal bar is shaped as a detent 11 c. The control member 12 is L-shaped, its vertical bar having a longitudinal bore 12a, which is penetrated by the axis 11a of the locking rocker 11, and its horizontal bar is U-shaped in plan view, the extension 5 of the base plate 2 between the Legs 12b of the U comes to rest. The edges 12c of the control element 12 facing the abutment 10 of the spring 7 are increasingly beveled upwards, which can be seen from FIGS. 7a-d, which show the side view, the top view, the view according to FIG. 7a in the direction of the arrow A of the locking device 11, 12 and the oblique view of the control member 12. The sides of the vertical beams of the locking rocker 11 and the control member 12 facing the abutment 10 of the spring 7 are designed as contact surfaces 11 b and 12 d for the abutment 10.

A sole holder 14, which carries a sole hold-down device 14a and a step spur 14b at its front end, is pivotably mounted with a transverse axis 15 on the front, upper part of the housing 6. The front wall of the sole holder 14 has a control surface on its side facing away from the ski shoe, which appears in the drawing plane as a control curve 14c, which consists of an upper and a lower branch, which branches meet at the trigger point 14d of the heel holder. The locking rocker 11 rests with its locking lug 11 on the control cam 14c.

Furthermore, the horizontal bar of the locking rocker 11 has a hole 11 d approximately in its center for a bolt 16 to which a trigger lever 17 is articulated, which engages with the short, U-shaped arm 17 a on the lower part of the sole holder 14. Slit-shaped recesses 14e in the sole holder 14 enable the pivoting movement of the release lever 17. This design is known per se and does not form the subject of the invention.

In the travel position of the heel holder shown in FIGS. 1 and 3, the contact surfaces 11b and 12d of the locking rocker 11 and control member 12 lie flat on the abutment 10 of the spring 7, the locking lug 11 is in contact with the upper branch of the control curve 14c and Extension 5 of the base plate 2 is aligned with the longitudinal center plane of the housing 6. If the sole holder 14 is loaded vertically upwards, the locking device 11, 12, consisting of locking arm 11 and Control member 12, pivoted backward about the pivot axis 13 against the force of the spring 7, the extension 5 remaining in engagement with the two legs 12b of the U-shaped horizontal bar of the control member 12. The position of the heel holder at the trigger point 14d can be seen in FIG. 2. After the trigger point 14d has been exceeded, the sole holder 14 swivels up due to an opening spring (not shown). If only a lateral force acts on the sole holder 14, there is a horizontal pivoting of the unit of the housing 6 and the sole holder 14 about the vertical axis 3. It can be seen from FIG. 4 that the control member 12 is about due to its relative movement to the extension 5 the axis 11 a of the locking rocker 11 rotated against the force of the spring 7. 5 and 6, a detail of the control is shown, in which the coupling between control member 12 and base plate 2 is made by extensions 5a in the form of two pins.

With diagonal loads, i.e. H. Forces that have both a vertical and a horizontal component, there is a controlled diagonal release, i. H. that the bias of the spring 7 by pivoting the binding in one direction reduces the triggering force in the other direction, without losing the grip in the latter direction. If you imagine the diagonal load broken down into its components, there is a compression of the spring 7 in the event of horizontal pivoting due to the relative movement between the latching device 11, 12, in particular the control member 12, and the extension 5 Locking rocker 11 almost without force, by a lever arm shortened as a result of the beveling of the edges 12c of the control element 12, brought into abutment on the abutment 10 of the spring 7 and then pushes the abutment 10 against the force of the spring 7 until the locking lug 11c exceeds the trigger point 14d and the sole holder 14 is released.

For the arbitrary opening, a force in the direction of the arrow Pf is exerted on the release lever 17 by hand or with the help of a ski stick, which engages under the sole holder 14 with its short arm 17a and leads up at least until the latching lug 11c of the locking rocker 11 exceeds the trigger point 14d, whereupon the sole holder 14 is pivoted up by the opening spring.

After a safety release as well as after opening by hand, the heel holder is in a position ready for entry. By depressing the sole holder 14 with the shoe, the heel holder is closed.

A modification of the first embodiment according to FIG. 2a has a slightly changed abutment 10 'for the spring 7, which ensures that the control member 12 is acted upon by the spring 7 in every position. In this case, the edges of the control member 12 facing the abutment 10 'can be rounded off in order to reduce the stress and wear of the edges.

In the following versions, the heel holder is used in conjunction with a swivel plate, a complete binding with front jaws being described only in the third embodiment.

In the second embodiment according to FIGS. 9 to 10, an extension 5 is mounted on a ski-fixed base plate 2 'at the rear end and in its central region a vertical axis 3' on which a swivel plate 18 is rotatably mounted, preferably against the force of a return spring, not shown is. The pivot plate 18 carries at its rear end a housing 6 with a spring-loaded latching device 11, 12, a sole holder 14 and a release lever 17 analogous to the first embodiment.

The vertical release takes place as in the first embodiment. When a lateral force occurs, the swivel plate 18 rotates about the vertical axis 3 ′ together with the housing 6, the latching device 11, 12 and the sole holder 14. The relative movement between the latching device 11, 12, in particular the control member 12, and the extension 5 As already described above, the spring 7 is compressed. The purely horizontal release via a toe piece is described in the following embodiment.

The third embodiment according to FIGS. 11 to 14 has a ski-fixed base plate 2 ", which in its central region has a vertical axis 3" on which a pivot plate 18 "is rotatably mounted. The base plate 2" carries a housing at its rear end 6 with a spring-loaded locking device analogous to the first embodiment. The pivot plate 18 "has in the area that comes to rest over the control element 12 of the locking device 11", 12, two extensions 5a ", which protrude in the form of transverse walls and have the U-shaped part of the control element 12 in the lead between them. The swivel plate 18 "continues from the extensions 5a" backwards into two side walls 18a "which carry a transverse axis 15 for a sole holder 14". In addition, the front region of the swivel plate 18 "is provided on its underside with a guide groove 18b", into which a guide plate 2a "engages, which is mounted on the front part of the base plate 2". Fin release lever 17 "is articulated by means of a bolt 16 on the locking rocker 11". As the sole holder 14 "as. Part of the swivel plate 18 "can carry out a horizontal relative movement relative to the latching rocker 11", the control surface, shown in the figures as a control curve 14c ", is designed to be correspondingly wide When the pivot plate 18 "is carried along, the latching rocker 11" has, viewed in horizontal section, a diabolically widened bore 11d "for the bolt 16 (FIG. 12). Furthermore, the release lever 17" is designed to be correspondingly wide for carrying out the pivoting movement.

The vertical release takes place as in the first embodiment. When a lateral force occurs, the pivot plate 18 ″ rotates and takes the control member 12 with it against the force of the spring 7 via the two extensions 5 a ″. With the swivel plate 18 ", the sole holder 14" and in its slot-shaped recesses 14e "the release lever 17" are also rotated. Since the locking rocker 11 "is articulated in the housing 6 and this is integrated at the end of the base plate 2", its locking lug 11c "slides along the control surface of the sole holder 14". Since the bolt 16 rotates away with the release lever 17 "in the horizontal plane, the above-mentioned exemption in the form of the widened bore 11 d" is provided for the bolt 16 in the latching rocker 11 ".

The diagonal release mechanism is the same as in the previous embodiments. In the case of a purely horizontal rotation, the heel holder is coordinated with a front jaw 19 in such a way that, from a certain pivoting angle, only the front jaws 19 trigger. This triggering occurs before the control member 12 has compressed the spring 7 by its rotation to such an extent that the locking rocker 11 "would also be released without force. Thus, the heel holder only releases in the vertical and diagonal direction when overloaded.

11, 13 and 14 one of the possible embodiments of the release mechanism of the front jaw 19 is shown, in which the release by interaction of a control link 2b "formed at the front end of the base plate 2" with two locking rollers 20, which are located on the underside of the toe piece 19, which is mounted on the swivel plate 18 "by means of a swivel pin 21. The control link 2b" consists of a circular arc piece 2c "with the center of the vertical axis 3", which has a recess 2d "in the middle. During a rotary movement the swivel plate 18 ", the locking rollers 20 roll along the circular arc piece 2c" of the control link 2b "until they leave it and the front jaw 19 can rotate about the pivot pin 21 until a locking roller 20 rests at the lowest point of the recess 2d" In this position, the tip of the ski boot comes free.

The invention is not restricted to the exemplary embodiments shown. Further modifications are conceivable without leaving the scope of the scope of protection. The use of two extensions is an equivalent solution to the variant with an extension, it being essential that the housing with the latching device is movable relative to these extensions, regardless of whether the extensions are ski-proof or are provided on a part which can be pivoted relatively horizontally to the ski .

To reduce frictional forces, as is known per se, friction-reducing elements made of a suitable material can be provided between components performing a sliding movement, or these components can have a coating of such material. For example, the extensions can also be equipped with rollers.

The bindings described above are primarily intended for the use of shoes with an at least group-uniform sole length. If necessary, it can be adjusted to different sole lengths thanks to the adjustability of the toe piece. Solutions of this type are known, for example reference is made to AT-PS 352.599.

Claims (15)

1. A safety ski binding, particularly a heel clamp, comprising a housing (6) provided with a detent mechanism (11, 11"; 12), and a sole clamp member (14, 14") mounted for pivoting vertically upwards about a transverse axis (15), said housing (6) and a plate member (2, 2'; 18") being horizontally pivotable relative to one another about an upright axis (3, 3', 3"), said detent mechanism (11, 11"; 12) being mounted on a pivot axis (13) extending parallel to said transverse axis (15) and subjected to the action of a single spring (7) for cooperation with said sole clamp member (14, 14") and a projection (5, 5a; 5a") of said plate member (2, 2' ;18), said spring (7) acting simultaneously as a release spring for the vertical pivoting of said sole clamp member (14, 14") and for the horizontal pivoting of said housing (6) relative to said plate member (2, 2' ;18), said detent mechanism (11, 11" ; 12) being effective on pivotal displacement in one direction to reduce the spring. force for the release operation in a direction perpendicular to said pivotal displacement, characterized in that said detent mechanism (11, 11" ; 12) is of two-piece construction comprising a detent arm (11, 11") articulated about said pivot axis (13) and a control member (12) mounted for rotation about an axis (11 a, 11 a") defined on said detent arm (11,. 11") and extending perpendicular to said pivot axis (13), said detent arm (11, 11") cooperating with a control curve (14c, 14c") of said sole clamp member (14, 14"), and said control member (12), with at least one projection (5, 5a; 5a") of said plate member (2, 2' ; 18).

2. A binding according to claim 1, characterized in that said detent arm (11, 11"), as viewed in the skiing direction, consists of a horizontal section and a vertical section, the free end of said vertical section being hinged to the bottom (6a) of said housing (6), a central portion of said vertical section being formed as said axis (11 a, 11 a") for said control member (12), the free end of said horizontal section being formed as a detent nose (11c, 11c").

3. A binding according to claim 1, characterized in that said control member (12) is of substantially L-shaped configuration, its vertical leg being formed with a longitudinal bore (12a) for said axis (11 a, 11 a" of said detent arm (11, 11") to extend therethrough, it horizontal leg being U-shaped as viewed from above.

4. A binding according to any of claims 1 to 3, characterized in that the sides of the vertical portions of said detent arm (11, 11") and said control member (12) facing towards said spring (7) are formed as flat abutment faces (11 b, 11 b" ; 12d) for a support bearing (10) slidingly displaceable in said housing (6) and acting as an abutment for said spring (7).

5. A binding according to claims 3 and 4, characterized in that the upper portion of said abutment face (12d) of said control member (12) is of trapezoidal shape resulting from a progressive taper of the edges (12c) of the vertical leg of said control member (12) facing towards said support bearing (10) (Figs.7a-7d).

6. A binding according to claims 1 and 3, characterized in that said projection (5) is formed as a vertical spigot disposed in the longitudinal center axis of said plate member (2, 2") to be received between the legs (12b) of said U-shaped control member (12).

7. A binding according to claims 1 and 3, characterized in that there are provided two projections (5a, 5a") in the form of vertical spigots or walls for receiving the legs (12b) of said U-shaped control member (12) therebetween.

8. A binding according to claims 1 and 6 or 7, characterized in that in any position of said detent mechanism (11, 11" ; 12) the individual projections (5, 5a; 5a") are in engagement with said control member (12), and that the surfaces of said projections contacting said control member (12) are rounded and optionally lined with a friction- reducing material.

9. A binding according to claim 1 and any of claims 6 to 8, wherein said sole clamp member (14) is hinged to said housing (6), characterized in that said plate member is formed as a base plate (2) fixedly secured to the ski, a rear portion of said base plate (2) carrying. said upright axis (3) for mounting said housing (6) at a portion thereof spaced from said detent arm (11), a front portion of said base plate (2) carrying a transverse rail (4) for guiding the bottom (6a) of said housing (6), and the front end of said base plate (2) carrying said projection (5) (Figs. 1-4).

1.0. A binding according to claim 1 and any of claims 6 to 8, wherein said sole clamp member (14) is hinged to said housing (6), characterized in that said plate member is formed as a base plate (2) fixedly secured to the ski and carrying said upright axis (3') at its central portion and said projection (5) at its rear end, and that said housing (6) is integrally connected to and provided on the rear end of a pivot plate (18) mounted for rotation about said upright axis (3') of said base plate (2').

11. A binding according to claim 1 and any of claims 6 to 6, characterized in that said housing (6) is integrally connected to and provided on the rear end of a base plate (2") fixedly secured to the ski and carrying said upright axis (3") at its central portion, and that said plate member is formed as a pivot plate (18") mounted for rotation about said upright axis (3") of said base plate (2") and carrying said two projections (5") on its rear portion and said sole clamp member (14") hinged to its rear end (Figs. 11, 13, 14).

12. A binding according to claims 1 and 11, characterized in that said control curve (14c") of said sole clamp member (14") is formed so as to permit a horizontal movement of said sole clamp member (14") and said detent arm (11") relative to one another.

13. A binding according to claim 1, characterized. in that an intermediate portion of the horizontal section of said detent arm (11, 11") is formed with a bore (11 d, 11 d") for receiving a bolt (16) carrying a release lever (17, 17") for the intentional release of the heel clamp.

14. A binding according to claim 13, characterized in that said bore (11d") is of increasing diameter from the center towards both of its ends (Fig. 12).

15. A binding according to claim 1, characterized in that in any of its positions said control member (12) abuts said support bearing (10) engaged by said spring (7).

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