EP0408824B1 - Ski boot safety binding - Google Patents

Abstract

A ski boot safety binding has a basic body (13) which is arranged on a swivel cam (15) so that it can swivel about a vertical axis (11) and which consists of two partial bodies which are prestressed resiliently towards one another in the direction of their longitudinal axis (14), can be pressed apart counter to the spring force along the longitudinal axis (14), and are supported from opposite sides on the swivel cam (15), which is fixed to the ski, in such a way that the partial bodies (13', 13") are increasingly resiliently pressed apart when the basic body (13) is rotated out of the normal position. Furthermore, pairs of retaining cams (16)/connecting members (17) are arranged on the partial bodies (13', 13") or the ski boot (18) so that safety release takes place both in forward and backward falls as well as in the case of excessive torsional loads. The ski boot (18) is retained on the basic body (13) against lateral displacements by fixed lateral stops (19, 20). At least some of the retaining cams (16) and/or connecting members (17) can be disengaged from the assigned connecting member (17) or retaining cam (16) respectively by lateral displacement counter to a spring force (61) which can be overcome relatively easily by means of a manual actuating lever (20). <IMAGE>

Description

The invention relates to a ski boot safety ski binding arrangement according to the preamble of patent claim 1.

A ski boot safety ski binding arrangement of this type is already known (AT-PS 375 555), in which part of the components of the safety ski binding is arranged on the ski and another part on the ski boot. Such a ski boot safety ski binding arrangement allows a safety release both in the case of forward and backward falls and in the case of torsional stresses on the skier's leg. When the base body is rotated, the two partial bodies are spread so that the retaining cams and link parts disengage from pairs of retaining cams and link part pairs which are assigned to one another, as a result of which the ski boot can be released from the ski. Exactly the same spreading of the two partial bodies of the base body can also be carried out by hand using a hand opening lever if an intentional detachment of the ski boot from the ski is desired. For this purpose, however, the hand opening lever must exert the entire spreading force for the two partial bodies of the base body, which is relatively large, since it corresponds to the triggering force.

The aim of the present invention is now to provide a ski boot safety ski binding arrangement of the type mentioned at the outset in which deliberate release by hand is possible in a much easier manner and in particular without overcoming the force of the release spring (s) which are to be biased towards one another .

To achieve this object, the features of the characterizing part of claim 1 are provided.

According to the invention, the lateral support of the ski boot on the base body does not take place via the holding cam or link parts, but directly via fixed lateral stops of the base body or the ski boot. These fixed side stops can e.g. be realized by the side surfaces of the base body or by side surfaces of the boot sole, which can also be provided on the inner edge of a sole recess.

In this way, the two from opposite sides acting on the base body, in particular laterally swingable against spring force or cam parts are relieved of lateral holding forces for the ski boots, so that these components may be laterally displaceable against a comparatively low spring force without the lateral support of the ski boot on the base body.
The ski boot is therefore preferably held laterally by direct contact with the base body, while the holder is held upward and forward and backward by the retaining cams and scenery parts.

Due to the fixed stops between the ski boot sole and the base body, a perfect transmission of the rotary movements from the ski boot to the base body is guaranteed.

Between the ski and the ski boot, effective holding cam-link part pairs are known per se (AT-PS 305 108); In this known arrangement, however, the link parts acting laterally on the sole of the boot take over the lateral mounting, which is why these link parts can only be designed to be pivoted out laterally against considerable spring forces. Even with this known safety ski binding, the entire release spring force must be overcome when manually operated - in this case to close the binding.

The same applies to a safety ski binding according to EP-A 0 183 055.

Advantageous developments of the invention are characterized by the subclaims.

The embodiment according to claim 5 is particularly advantageous because it allows two link parts to be combined in a single component.

On the basis of the embodiment according to claim 7, it can be ensured that, after a manual release, the binding is automatically entered, i.e. can be done without operating the manual control lever again.

In the embodiment according to claim 8, the holding cam which is not connected to the manual actuation lever or the related link part only serves to ensure an automatic snap-in when getting into the binding.

The embodiment according to claim 9 is also important without the particularly light hand release according to the invention, because here the entire release mechanism is accommodated in a recess in the sole of the shoe, so that all parts of the binding are accommodated in a completely protected manner. The placement of a safety ski binding in a recess in the ski boot sole is known per se (EP-A 0 183 055; DE-OS 30 39 699), but here the release elements are not provided laterally between a base body and the lateral edges of the recess in the ski boot sole. In this way, a relatively long, wide and deep formation of the recess is required.

However, a combination of the embodiment according to claim 9 with the lateral manual release according to the invention is particularly advantageous. Claims 10 to 13 represent advantageous implementations of this combination idea.

Claims 14 and 15 indicate advantageous embodiments for the design and accommodation of the manual control lever.

Fig. 1

eine teilweise geschnittene Seitenansicht des auf einem Ski befestigten Basiskörpers einer Skistiefel-Sicherheitsskibindungsanordnung gemäß der Erfindung,

Fig. 2

eine teilweise geschnittene Draufsicht des Gegenstandes der Fig. 1,

Fig. 3

eine schematische Seitenansicht analog Fig. 1, wobei jedoch zusätzlich strichpunktiert der auf den Basiskörper aufgesetzte Skistiefel angedeutet ist,

Fig. 4

eine Ansicht des auf dem Ski angeordneten Basiskörpers von vorne mit strichpunktiert angedeutetem, darauf angeordnetem Skistiefel,

Fig. 5

eine Seitenansicht analog Fig. 3, wobei jedoch die Skistiefel-Sicherheitsskibindungsanordnung im Stadium der Auslösung bei einem Rückwärtssturz wiedergegeben ist,

Fig. 6

eine Draufsicht des auf einem Ski befestigten Basiskörpers während einer Drehauslösung,

Fig. 7

eine Seitenansicht analog Fig. 3, wobei jedoch im wesentlichen nur die bei einer Handauslösung betätigten Bauelemente wiedergegeben sind,

Fig. 8

eine teilweise geschnittene Vorderansicht der erfindungsgemäßen Skistiefel-Sicherheitsskibindungsanordnung in Höhe der seitlich ausschwenkbaren Kulissenplatten, wobei die Ausschwenkung der einen Kulissenplatte durch Betätigung des Handbetätigungshebels nach Fig. 7 wiedergegeben ist,

Fig. 9

eine teilweise geschnittene Vorderansicht in Höhe der seitlich ausschwenkbaren Kulissenplatten einer weiteren Ausführungsform mit automatisch auf den Basiskörper aufschnappenden Kulissenplatten, wobei die Darstellung das Stadium des Aufsetzens des Skistiefels auf den Basiskörper wiedergibt, und

Fig. 10

eine zu Fig. 9 analoge Ansicht bei vollständig auf den Basiskörper aufgesetzten Skistiefel.

The invention is described below, for example with reference to the drawing; in this shows:

Fig. 1

2 shows a partially sectioned side view of the base body of a ski boot safety ski binding arrangement, which is fastened to a ski, according to the invention,

Fig. 2

2 shows a partially sectioned top view of the object of FIG. 1,

Fig. 3

2 shows a schematic side view analogous to FIG. 1, but with the ski boot placed on the base body being indicated by dash-dotted lines,

Fig. 4

1 shows a view of the base body arranged on the ski from the front with a ski boot indicated by dash-dotted lines,

Fig. 5

3 shows a side view analogous to FIG. 3, but showing the ski boot safety ski binding arrangement in the triggering stage in the event of a backward fall,

Fig. 6

a plan view of the base body attached to a ski during a rotary release,

Fig. 7

3 shows a side view analogous to FIG. 3, but essentially only the components actuated in the case of a manual release are shown,

Fig. 8

4 shows a partially sectioned front view of the ski boot safety ski binding arrangement according to the invention at the height of the link plates which can be swung out laterally, the pivoting out of the one link plate being represented by actuation of the manual operating lever according to FIG. 7,

Fig. 9

a partially sectioned front view at the level of the laterally pivotable backdrop plates of another embodiment with automatically the base body snapping on the backdrop plates, the representation showing the stage of putting the ski boot on the base body, and

Fig. 10

a view similar to FIG. 9 with ski boots completely placed on the base body.

According to FIGS. 1 and 2, a flat plate 30 is fastened on the surface of a ski 12 approximately in the ball area of a ski boot 18 to be put on (FIG. 3), from which a swivel cam 15 extends vertically upwards, which is essentially circular-cylindrical, however 2 shows cam recesses 35 in the front and rear region.

A circumferential groove 33 with an approximately semicircular cross-section extending between an upper region 31 and a lower region 32 receives bolts 36 running on both sides of the longitudinal axis 14 (FIG. 2) parallel to the longitudinal axis (14) and extending from the front through bores 37 an end wall 38 into the interior of the front partial body 13 'of a base body 13. Behind the end wall 38, the front sub-body 13 'has a cavity 39 in which an axially displaceable spring abutment 40 is arranged. The bolts 36 slidably extend through holes 41 in the spring abutment 40. The screw 43 is screwed into a central threaded central bore 42, the head of which can be rotated in a suitable bore 44 of the end plate 38, but is axially firmly supported. The screw 43 can be rotated from the front, for example by means of a screwdriver, as a result of which the end plate 38 can be adjusted axially.

Behind the space 39, the bolts 36 extend into spring receiving spaces 45 arranged concentrically with them, which extend to spring abutment steps 46 of the partial body 13 'arranged near the holding cams 15'. Arranged within the spring receiving spaces 45 around the bolts 36 are two trigger springs 47 which run parallel to one another and which are axially supported on one side on the spring abutment plate 40 and on the other hand on the spring abutment step 46. The springs 47 are arranged under a prestress corresponding to the desired triggering force in the spring receiving spaces 45.

Following the spring receiving space 45 to the rear, the two bolts 36 arranged parallel to and at the same distance from the central axis 14 slide through channels 48 of the partial body 13 'through to the rear end face 49 thereof, which in the non-rotated position of the base body 13 with the vertical axis 11, ie the central axis of the pivot cam 15 essentially coincides.

At a short distance or at most lightly touching, this rear surface 49 is adjoined by the front surface 50 of a rear part body 13˝ which forms the second part of the base body 13 and which has two axial threaded bores 51 parallel to the longitudinal axis 14 and at the lateral spacing of the bolts 36 the rear thread ends of the bolts 36 are screwed in. Outside these thread ends, the bolts 36 are circular cylindrical.

In two cam receiving spaces 52, 53 at the rear and front ends of the partial bodies 13 'and 13' are cooperating with the cam recesses 35, which extend rearward and forwardly extending cams 54, 55, which are from the front and rear of the partial bodies 13th ', 13˝ are supported.

In the area of the annular groove 33, the cams 54, 55 have projections 56, 57 pointing rearward or forward, which engage in the annular groove 33 in the sense of a rotation guide.

In the central position shown in FIGS. 1 and 2, the trigger springs 47 pull the two partial bodies 13 ', 13' towards one another until the two cams 54, 55 are in full engagement with the cam recesses 35. In this state, the surfaces 49, 50 should not just touch.

Above the pivot cam 15 is completed by a cover plate 58 running parallel to the ski surface, which engages from above in a correspondingly circular recess 59 of the partial body 13 ', 13' and is flush with the surface of this partial body in the area concerned.

In front of and behind the swivel cam 15 are on a slightly upwardly projecting area of the partial body 13 ', 13˝ laterally holding cams 16, the function of which is described in detail below.

The base body 13 according to FIGS. 1 and 2 has essentially the shape of an elongated cuboid arranged in the normal position parallel to the longitudinal direction of the ski. The plate 30 is housed in a lower central recess 60 of the partial body 13 ', 13˝.

Based on the design described, the base body 13 can be rotated in the direction of the arrows shown in FIG. 2, the cams 54, 55 being lifted out of the assigned cam recesses 35, as is indicated in FIG. 6. During this twisting movement, the two partial bodies 13 ', 13' are spread apart from one another against the force of the release springs 47, namely by the same but opposite amounts relative to the transverse axis 34.

As long as the cams 54, 55 are not yet completely lifted out of the cam recesses 35, there is still a restoring force which, when released, returns the base body 13 to its normal position shown in FIGS. 1 and 2.

3, 5 and 7 to 10, the sole of a ski boot 18 is provided at the bottom with a likewise rectangular recess 25, which in particular in the longitudinal direction is so much larger than the longitudinal extent of the base body 13 that the expansion of the partial body 13 ', 13˝ is not hindered in the longitudinal direction.

At the lateral edges of the recesses 25 are according to the invention link plates 21 which extend essentially in the longitudinal direction of the boot and vertically and according to FIG. 8 by a spring 61 extending between them around shoe-fixed swivel axes 62 into the vertical normal position shown on the right in FIG. 8 are too biased. The pivot axes 62 extend in the longitudinal direction of the boot.

According to FIG. 7, the right pivot axis 62 is extended to the rear end of the ski boot sole by a rod 28, which is rotatably supported within the ski boot sole in an axial channel (not shown). At the rear end of the ski boot sole, the rod 28 emerges from this channel and is angled up there to a manual actuating element 29 with a handle 62 '. In this way, a manual actuation lever 20 is formed for the link plate 21 shown pivoted out in FIG. 8. By suitable pivoting of the handle 62, the link plate 21 on the left in FIG. 8 can thus be displaced into the pivoted-out position shown there will. In a corresponding manner, the right pivot axis 62 in FIG. 8 could also be provided with a corresponding manual adjustment mechanism. It is also conceivable that a single manual control lever 20 swings out both link plates 21 in opposite directions via a suitable gear.

Stops, not shown, hold the two link plates 21 in the relaxed state of the spring 61 in the position shown on the right in FIG. 8. Free spaces 26 are provided in the shoe sole laterally outside of the link plates 21, which allow the lateral pivoting out.

According to Fig. 3, the link plates 21 front and rear each contain a link lever 17, which is provided with a curved link path 63 facing forwards or backwards, which from the upwardly projecting central region of the partial body 13 ', 13' laterally on both sides stand away. The holding cams 16 are circular cylindrical. Their axes run transversely to the longitudinal direction 14.

In this way e.g. the two front link levers 17 with excessive forces on the ski boot 18 in the direction of the arrow in Fig. 5 with the partial body 13 'in the direction of the double arrow sliding past the front holding cams 16, the release springs 47 (Fig. 1, 2) the size of the determine the height release force to be overcome.

In the event of a forward fall, the release would take place between the rear link levers 17 and the rear holding cams 16.

In the case of an excessive torsional force acting on the skier's leg, for example in the direction of the arrow shown in FIG. 6, the base body 13 can also rotate about the vertical axis 11 with the partial bodies 13 ', 13' apart, the cams 54, 55 and the Cam recesses 35 are formed so that the release springs 47 just ensure the desired torsional release force.

Due to the spreading of the partial body 13 ', 13˝, the front and rear holding cams 16 move away from each other (the distance y in FIG. 6 is increased), so that the holding cams 16 are released from the associated link levers 17 of the link plates 21 pointing in opposite directions and the ski boot 18 can detach itself from the ski 12 upwards.

As can be seen from FIGS. 3, 4, 5, 7 and 8, the link plates 21 which run vertically in the normal position lie laterally in the normal position of the binding next to the side faces of the base body 13 which run parallel to them. Because the link plates 21 now because of the weakness the spring 61 (Fig. 8) are very easily laterally deflected, the link plates 21 can not take over the lateral mounting of the ski boot 18.

Instead, the front and rear vertical side walls of the recess 25 of the ski boot 18, which extend in the longitudinal direction of the ski, are used as stops 19 (FIGS. 3, 4, 5, 8), which with the associated vertical and also extend in the longitudinal direction of the ski and also stops 22 cooperating front and rear side surfaces of the base body 13 cooperate. By the direct contact of the base body 13 with the ski boot 18 on these lateral surfaces is a perfect lateral support of the ski boot 18 on the base body 13 guaranteed.

6, the vertical axis 11 of the rotatable base body 13 is located on the central longitudinal axis 23 of the ski 12.

According to FIG. 3, special recesses 27 are provided on the edge of the recess 25 in the sole of the ski boot 13 for accommodating the holding cams 16.

9 and 10, the link plates 21 may have inclined surfaces 24 at their lower end, which cooperate with the upper edge of the associated holding cams 16 such that when the ski boot is put on in the direction of the vertical arrow in FIG. 9, the inclined surfaces 24 with the Edges 63 come into engagement and thereby spread apart the link plates 21 in the sense of the lateral arrows, so that they can automatically snap onto the retaining cams 16 from above into the position shown in FIG. 10. In this way, the hand-operated lever 20 (FIG. 7) need not be actuated in order to place the ski boot 13 on the base body 13, but only to get out of the binding.

According to FIGS. 8 to 10, the spring 61 is accommodated in a housing 64 arranged transversely between the link plates 21, which prevents the weak spring from buckling. The protrusion of the spring from both sides of the housing 64 is sufficient to ensure the necessary elastic freedom of movement.

The function of the described ski boot safety ski binding arrangement is as follows:
When getting into the binding, the ski boot 18 is simply placed on the base body 13 from above, as shown in FIG. 9. Here, the link plates 21 spread outwards by themselves and finally snap over the holding cams 16, so that the fixed position according to FIG. 10 is reached.

In the event of excessive stress on the skier's leg during backward falls (Fig. 5), forward falls or torsional stresses (Fig. 6), the partial bodies 13 ', 13' are spread apart against the force of the release springs 47, so that there is a safety release in all cases.

If the binding is to be opened by hand, the manual actuation lever 20 according to FIG. 7 is acted upon accordingly, whereby at least one of the link plates 21 is pivoted out in the sense of FIG. 5, and then the ski boot 18 is initially tilted somewhat and thus completely upwards without any problems Base body 13 and thus the ski 12 can be lifted off.

So that when running with the ski boot according to the invention the recess is not completely open down, a closure piece, not shown, can be inserted into this recess, which has the shape of the base body with holding cams according to FIGS. 1 and 2, but only consistently of solid inside Plastic is made. Such a closure piece, which is flush with the bottom surface of the sole at the bottom, can therefore be easily inserted and removed because the actuation of the manual actuation lever 20 enables the same to be inserted and removed without problems.

The closure piece is preferably longer than the base body in the position shown in FIG. 1, so that the recess 25 is completely covered by it.

It is important that the link plates 21 cannot swing out sideways under all loads occurring during skiing - as with the manual release. The interacting surfaces of the holding cams 16 and link parts 17 are to be designed in accordance with this requirement in such a way that - except for manual release - forces which occur essentially only in the plane of the link plates 21 occur.

Claims (16)

1. Ski boot-safety ski binding arrangement comprising a base body (13) which is pivotally arranged about a vertical axis (11) on a pivot cam (15) which extends upwardly from the ski (12), with the longitudinal axis (14) of the base body being aligned in the non-rotated state with the longitudinal direction of the ski and with the base body consisting of two part bodies (13', 13'') which are resiliently biased towards one another in the direction of its longitudinal axis (14) and which can be pressed apart from one another against the spring force along the longitudinal axis (14) and which are braced from opposite sides against the pivot cam (15) which is fixed relative to the ski in such a way that the part bodies (13', 13'') are increasingly resiliently pressed apart out of the normal position on rotation of the base body (13); and further comprising holding cam (16)/cam track part (17) pairs secured to the part bodies (13', 13'') or to the boot (18) by means of which the ski boot is releasably held on the base body, with associated retaining cam (16) and cam track parts (17) being releasable from one another against the spring force during forward and/or rearward falls with resilient pressing apart of the part bodies (13', 13'') and/or on rotation of the base body (13),
   characterised in that the ski boot (18) is firmly held on the base body (13) against lateral displacements by mutually cooperating fixed lateral abutments (19 and 22 respectively) provided on it and on the base body (13) and at least some of the retaining cams (16) and/or cam track parts (17) are capable of being brought, by means of one or more hand-actuating levers (20), by lateral displacement or pivoting against a spring force which is comparatively light to overcome, out of engagement with the associated cam track part (17) or holding cam (16) respectively in such a way that the ski boot (18) can be effortlessly removed from the base body (13).
2. Arrangement in accordance with claim 1, characterised in that the holding cams (16) are provided on the base body (13) and the cam track parts (17) are provided on the ski boot (18).
3. Arrangement in accordance with claim 1 or claim 2, characterised in that, at each side, two holding cams (16) and two cam track parts (17) are arranged behind one another on the front and rear part bodies (13', 13'') respectively.
4. Arrangement in accordance with one of the preceding claims, characterised in that in each case there is provided at least one holding cam (16) and one cam track part (17) on each part body (13', 13'') and preferably at each side.
5. Arrangement in accordance with one of the preceding claims, characterised in that the associated cam track parts (17) or holding cams (16) arranged on the ski boot (18) are united at each side of the central longitudinal axis (23) into a single component (21) which is preferably a laterally movable, in particular outwardly pivotable cam plate (21), with, in each case, one cam part (17) being provided at the front and at the rear preferably on each cam plate (21).
6. Arrangement in accordance with one of the preceding claims, characterised in that the holding cams (16) or cam track parts (17) which are laterally provided on the ski boot (18) are laterally movable, at least at one side, and are in particular laterally outwardly pivotable and also actuatable by the hand actuating lever (20).
7. Arrangement in accordance with one of the preceding claims, characterised in that the laterally movable holding cams (16) or cam track parts (17) and/or the associated cam track parts (17) or holding cams (16) have inclined surfaces (24) at the lower or upper ends respectively where they first come into engagement on placement of the ski boot (18) onto the base body (13) from above, with the inclined surfaces having an inclination such that on placement of the ski boot (18) from above the laterally movable holding cams (16) or cam track parts (17) which are initially located in their normal position automatically pivot resiliently outwardly toward the sides and snap back sideways into the associated fixed cam track parts (17) or holding cams (16) respectively.
8. Arrangement in accordance with claim 7, characterised in that apart from the laterally movable holding cams (16) or cam track parts (17) which are connected to the hand actuating lever (20), resiliently laterally outwardly pivotable holding cams (16) or cam track parts (17) respectively are in particular provided on the other side of the central longitudinal axis (23) which are also not connected with the hand actuating lever (20).
9. Arrangement in accordance with one of the preceding claims, characterised in that the ski boot (18) has at its lower side a recess (25) complementary to the base body (13) in the spread apart state of the part bodies (13', 13''), with the base body (13) engaging from below into the recess (25), and with the holding cams (16) and the cam track parts (17) being provided laterally on the base body (13) or inwardly at the side edges of the recess (25) respectively.
10. Arrangement in accordance with claim 9, characterised in that the holding cams (16) are laterally arranged on the base body (13) and in each case one cam track plate (21) carrying the two cam tracks (17) are arranged inwardly at the edge of the recess (25).
11. Arrangement in accordance with claim 9 or claim 10, characterised in that a correspondingly large free space (26) is provided laterally outside of the laterally movable holding cams (16) or cam track parts (17) respectively provided on the ski boot (18), in particular at the side outside of the cam plate (21).
12. Arrangement in accordance with one of the claims 9 to 11, characterised in that the base body (13) has the form of an elongate parallelopiped extending in the longitudinal direction of the ski, the front and rear side surfaces of which form abutments (22) which cooperate with the lateral surfaces of the complementary cut-out (25) which likewise act as abutments (19).
13. Arrangement in accordance with one of the claims 9 to 12, characterised in that cut-outs (27) are provided in front of and behind the cam track plate (21) to receive the holding cams which are fixedly arranged on the base body (13).
14. Arrangement in accordance with one of the preceding claims, characterised in that the hand actuating lever (20) is a bar (28) which extends rotatably in the longitudinal direction of the shoe through the sole and which projects at the front or preferably at the rear out of the sole of the ski boot and is there connected with a hand actuating lever element.
15. Arrangement in accordance with claim 14, characterised in that the bar is rotationally fixedly connected with the resiliently laterally outwardly pivotable cam track plate (21) and is preferably arranged coaxial to its axis of rotation which extends in the longitudinal direction of the ski.
16. Arrangement in accordance with one of the claims 9 to 15, characterised in that the recess (25) in the sole of the ski boot (18) can be filled by a filling body which is flush at the bottom with the sole of the ski boot and which has the shape of the base body, so that the filling body arranged on the ski boot (18) can be held and removed in the same manner as the base body (13).

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