EP0054928B2 - Combination of a touring ski binding and a ski brake - Google Patents

Abstract

A ski has a safety binding which includes a support for a ski boot. The support carries retainers for the toe and heel of the boot and is pivotable about an axis extending transversely of the ski so that the ski boot may be swung away from the ski during skiing. A brake for the ski is mounted on the support and is arranged to be kept in an inoperative or non-braking position by the pressure of the ski boot. The brake is resiliently urged towards its operative or braking position and automatically moves to this position when the pressure of the ski boot is released. The ski is thus braked regardless of whether the boot is removed from the binding intentionally or unintentionally.

Description

The invention relates to a combination of touring ski binding and ski brake.

In the case of touring ski bindings, it has previously been customary to secure the ski that is released from the boot with a safety strap. While this is appropriate for deep snow skiing, modern touring bindings, which are designed as safety ski bindings and can be attached to the ski, are also suitable for downhill skiing on slopes. In this case, the use of a lanyard is often rejected by the skier because of his own risk of accident, which is caused by the ski hanging loosely from the lanyard and connected to the ski boot. The previously known alternative to a lanyard, namely a ski brake, has already been used in conjunction with a touring ski binding (CH-A-598 837), but the ski brake is ineffective when using the ski binding as a touring binding, since it is only used as a return device is effective for the step frame when walking.

From the document EP-A-0 031 570, which falls under Art. 54 (3), a combination of a touring binding and a ski brake emerges, in which, however, the position of the brake arms depends on the position of the rear sole holder, because these parts are connected to one another in this way via connecting links are related to the fact that the ski brake only comes into its effective position when the sole holder is transferred to its release position, which only occurs in the event of a frontal fall. In the event of a turning accident in which the rear sole holder remains in its closed position, the ski brake is also inevitably held in its inactive position. When touring, in which the sole plate or the touring frame can be pivoted with respect to the ski, the ski boot can usually only be released from the touring frame in the event of a sudden fall, since the touring frame is pivoted in the event of a frontal fall and the possibility is therefore low that the rear sole holder opens. In this case, however, the brake would be ineffective according to EP-A-0 031 570.

A ski brake that is not subject to these restrictions is known from DE-A-28 38 902. There is a sprung base plate, which is attached to the ski by a hinge, supported at its rear end by springs, so that shocks can be absorbed during driving. It is not a touring binding, but only a base plate with little spring travel in the rear area, so that the problems explained above with a touring binding do not occur here, since this base plate is not stressed by the skier due to the rigid springs that the Weight of the skier must be regarded as a solid ski surface.

The object of the invention is to provide a combination of touring ski binding and ski brake, in which the ski brake can always come into the effective braking position regardless of the position of use of the pivotable binding part when the boot is released from the pivotable binding part, without affecting the various operating modes the touring binding, whereby the ski brake is only held in its inactive position by the boot without additional parts, the touring is not hindered and can be easily released.

This object is solved by the features of claim 1.

This configuration means that the ski brake is held in its ineffective position by the boot resting on the touring frame or touring plate. As soon as the boot is released from the swiveling binding part, the ski brake comes into its effective position due to its spring force and brakes the ski or prevents it from slipping. The ski is therefore always secured regardless of whether the boot is released due to a triggering process of the safety part of the ski binding or by arbitrarily opening the binding. It does not matter whether the ski boot has been released due to a frontal fall or a fall because a connection to a release part of the ski binding is missing. Additional parts that hold the ski brake in its inactive position are no longer required. It cannot happen with this combination that stored skis, for example when taking a break after the ascent, can slide down the slope, which is the case with the touring ski binding explained at the outset, because when using the ski binding as a touring binding the ski brake is used as Return device for the step frame is used and therefore ineffective as a brake in the touring position. In the combination according to EP-A-0 031 570, which falls under Art. 54 (3), the case that the ski is not secured is always present when the rear sole holder is in the closed position, which is the case, for example a fall.

In order to be able to use only a lanyard but not a ski brake on long runs in deep snow, the ski brake is detachably arranged on the pivotable binding part. As a result, the ski brake can be removed in a simple manner when using safety straps so that it does not pose a risk of accident if the ski is held on the boot by the safety strap and the ski brake is in the effective position into which it is due to the loose connection of ski boots and skis could endanger the skier through the lanyard.

For easy removal, the ski brake has a bearing part which has receptacles on its outer regions which serve to hold the ski brake on the pivotable binding part and that a locking device is provided on the bearing part which fixes the bearing part to the pivoting binding part in relation to the longitudinal direction thereof.

This configuration achieves the object of arranging the ski brake on a pivotable binding part designed as a touring frame in such a way that the safety release part arranged on the touring frame and the length compensation are not impaired, i.e. that no forces are transmitted from the bearing part de ski binding to the touring frame, which could cause the same to deform, since the restoring forces of the brake bracket can be absorbed by the bearing part, regardless of whether it is an elastically deformable brake bracket without an additional return spring or a Ski brake acts in which the brake bracket is pulled or pressed into its effective position by additional springs.

The bearing part can be constructed from two bearing blocks and a connecting web connecting the bearing blocks. By connecting the design options according to claims 2 and 7, a quick attachment. supply possibility of the ski brake created on the touring frame, since the bearing part can be snapped between them by briefly spreading the legs of the touring frame and can be held in the longitudinal direction by means of the spacer, which also transmits the braking forces to the sole receiving web.

An even quicker possibility of arranging the ski brake on the touring frame results from an advantageous development of the invention according to claim 5, since the bearing part can be inserted in an entangled position between the legs of the touring frame and then brought into its position of use by twisting. In the same way, the ski brake can be released quickly from the touring frame.

If the invention is further developed in accordance with claim 6, when the bearing part is screwed in between the two legs it is caused that they are briefly pressed apart until the bearing part is in its position of use. As a result, a certain snap effect is brought about, which means that the bearing part cannot be brought out of its position of use again without a certain amount of force, as a result of which it is secured between the legs in addition to the locking device. In the position of use, the legs are not stressed by the bearing part, since the distance between the receiving grooves corresponds to the distance between the legs and the support of the bearing part or the entire ski brake is carried out via the spacer on the sole receiving web, so that there is no impairment due to the deflection of the Skis necessary length compensation or the function of the safety release part can occur.

If the spacer is designed according to claim 8, it is possible to keep the legs of this wire bracket in the immediate vicinity of the inside of the legs of the touring frame, so that no additional disruptive surfaces between the legs of the touring frame arise. The pivotable design of the spacer generally has the advantage that it can be brought into a position parallel to the brake bracket when the ski brake is removed, so that no bulky component is formed which can easily be inserted into an anorak pocket when the skier is using prefers a lanyard.

If you manufacture the bearing blocks from a plastic suitable for storage purposes and the connecting web or the supporting part from a strong sheet metal, it is possible to absorb the forces resulting from the deformation of the elastic brake bracket completely in the bearing part without the touring frame with them Forces. The control surfaces necessary for the deformation, which in conjunction with the elastic deformability of the bracket cause the return of the brake bracket to its effective position, are provided according to an advantageous embodiment of the invention on the sides of the bearing blocks facing each other, so that they are simple to manufacture the pedestals can be cast on.

In the embodiment according to claim 11, the advantage is achieved that the snow building up on the ski below the bearing part is divided and pressed apart by the roof-shaped or wedge-shaped bearing part, whereby a larger accumulation of snow under this part is avoided when touring. An impairment of touring by the ski brake is thus largely avoided, which does not interfere with their arrangement between the legs and due to their low height in the ineffective position, which corresponds at most to the height of the sole receiving webs arranged on the step frame.

The low height in the inactive position is achieved in a further embodiment of the invention according to claim 13. Since the touring frame rests in a front bearing and on a rear locking device, a small gap between the ski and the touring frame remains in the position fixed on the ski, which is sufficient to accommodate the horizontal bearing sections of the brake bracket. Since the brake bracket is held under prestress on the bearing blocks by the Q-shaped part which widens obliquely upwards, so that it cannot fall down, the bearing recesses can be open at the bottom and only so deep that the bearing sections of the brake bracket fit into it . This not only saves height, but also significantly simplifies the assembly of the brake bracket in the bearing blocks. The brake bracket can namely be elastically pushed apart so far that it is released by its rotation relative to the bearing blocks and can be pulled down out of the bearing part if a correspondingly large recess is provided in the bearing part carrying the bearing blocks see is. In the embodiment in which connecting plates hold the bearing blocks together, this is not possible, but these connecting plates can be detached from the bearing blocks in a simple manner by means of a screw connection.

• Fig. 1 eine Ansicht von oben auf einen Teil eines als schwenkbarer Bindungsteil ausgebildeten Tourengestells mit einer Skibremse;
• Fig. 2 eine Seitenansicht der Anordnung gemäß Fig. 1;
• Fig. 3 eine Schnitt nach der Linie 111-111 in Fig. 1;
• Fig. 4 einen Schnitt nach der Linie IV-IV in Fig. 1;
• Fig. 5 einen Schnitt nach der Linie V-V in Fig. 1;
• Fig. 6 eine schaubildliche Darstellung der Skibremse; und
• Fig. 7 eine schaubildliche Darstellung einer abgeänderten Ausführungsform einer Skibremse.

Further refinements of the invention result from the dependent claims not mentioned above. The invention is shown in the drawing, for example. In this shows:

• Figure 1 is a top view of part of a touring frame designed as a pivotable binding part with a ski brake.
• FIG. 2 shows a side view of the arrangement according to FIG. 1;
• Fig. 3 is a section along the line 111-111 in Fig. 1;
• Fig. 4 is a section along the line IV-IV in Fig. 1;
• 5 shows a section along the line VV in Fig. 1.
• 6 shows a diagrammatic representation of the ski brake; and
• Fig. 7 is a perspective view of a modified embodiment of a ski brake.

In the exemplary embodiment shown, of the touring ski binding, only the pivotable binding part denoted by 1, which is designed as a touring frame, is shown. This touring frame has two legs 2 and 3 with a circular cross section, which in their front area carry a sole receiving web 4, on which a front sole holder 5 is arranged. The rear sole receiving web with the safety release part of the touring ski binding is not shown because this is not necessary for an understanding of the invention.

The touring frame 1 is pivotally mounted about an axis extending transversely to the longitudinal axis of the ski in a bearing part not shown in the drawing, so that when touring the touring frame can be pivoted up about this front axis, as a result of which the boot can be lifted off the ski.

Between the legs 2 and 3 of the pivotable binding part 1 designed as a touring frame, a ski brake, generally designated 6, is arranged in the vicinity of the front sole receiving web 4. The ski brake comprises a 7 designated, resiliently designed brake bracket, which is pivotally mounted in a bearing part 8 and is held in relation to the longitudinal axis of the pivotable binding part 1 by a spacer 9 which is pivotably mounted on the brake bracket and which is offset by an offset 9 ' Opening 10 of the front sole receiving web is suspended and is supported there, so that the ski brake is locked at a very specific point on the touring frame.

The brake bracket 7, which is made in one piece from a resilient wire, has an upper Q-shaped part 11 with a tread plate 12 and two horizontally running bearing sections 13 and 14, each of which is connected to a brake arm 15 and 16. The brake arms 15 and 16 have brake shoes 17 and 18 made of plastic, which are attached to the free ends of the brake bracket 7 and fastened there.

The brake bracket 7 is pivotally mounted with its horizontally extending bearing sections 13 and 14 in the bearing part 8, this bearing part being constructed from two plastic bearing blocks 19 and 20 with self-lubricating properties and from two connecting webs 21 and 22 arranged on the underside of the bearing blocks.

The bearing blocks 19 and 20 are provided on their underside with roof-shaped surfaces 23 and 24, on which the connecting webs 21 and 22 abut, as a result of which they are inclined to one another in such a way that the mutually adjacent edges of the connecting webs at the thickest point of the bearing blocks lie so that a wedge effect is exerted on the snow accumulating on the ski. This prevents icing due to the snow being pressed on the ski below the ski brake.

The bearing blocks 19 and 20 have on their underside in the middle downwardly open bearing recesses 25 and 26 which are so deep that the bearing sections 13 and 14 of the brake bracket 7 are completely accommodated. With its curved transition regions 27 and 28 between the bearing sections 13 and 14 and the adjoining loop-shaped part, the brake bracket 7 bears against control surfaces 29 and 30 of the bearing blocks 19 and 20 under prestress. The control surfaces 29 and 30 each have a locking recess 31 or 32 in the central plane of the bearing block, in which the brake bracket 7 is held in its effective or braking position. In order to swing the brake ball out of this position, it must be pressed over the inwardly projecting locking cams 33 and 34, which directly adjoin the locking recesses 31 and 32 and; a compression of the loop-shaped or Q-shaped part 11 of the brake bracket when it is pivoted forward in the direction of the sole receiving web 4 by the attached boot into the inactive position. This deformation results in the restoring force which returns the brake bracket to its braking position, in which it is received in the locking recesses 31 and 32, when the boot is released from the touring frame 1, so that the holding force exerted by the boot on the brake bracket 7 ceases . In the inactive position, which is shown in Fig. 1, the 0-shaped part 11 of the brake bracket is between the legs 2 and 3, while the brake arms 15 and 16 are parallel to the legs on the outside of the touring frame.

To hold the ski brake 6 on the pivotable binding part 1, the bearing blocks 19 and 20 have on their side surfaces parallel to the ski outer edges receiving grooves 35 and 36, which are adapted to the shape of the legs 2 and 3 and essentially tension fit freely between them. At diagonally opposite corners, the receiving grooves 35 and 36 are rounded inward, the arcuate receiving grooves 37 and 38 also being at a mutual distance which essentially corresponds to the distance between the two legs 2 and 3 of the touring frame. In the transition region between the linearly extending receiving grooves 37 and 38, the mutual distance between these sections, designated 39 and 40 and serving as locking cams, is somewhat larger than the mutual distance between the legs 2 and 3 of the pivotable binding part 1.

The ski brake is inserted into the touring frame in such a way that the bearing part 8 is inserted in an interlocked position between the legs 2 and 3 of the touring frame, the interlocking of the bearing part with respect to the touring frame being carried out in such a way that the arcuate receiving grooves 37 and 38 pick up legs 2 and 3. After a rotation of the bearing part, the locking cams 39 and 40 briefly pushing apart the legs 2 and 3 of the touring frame, the legs 2 and 3 enter the receiving grooves 35 and 36, as a result of which the bearing part is in the position of use shown in FIG. 1. The legs 2 and 3 spring back elastically after the locking cams 39 and 40 are exceeded during the turning process. In this position of use, the bearing part is fixed by the pivotable spacer 9, in which this spacer, which is designed as a U-shaped wire bag, is inserted with its offset 9 'into the opening 10 of the sole receiving web. The spacer 9 is designed so that it rests on the inside of the legs 2 and 3 on these in the use position.

In the position of use recorded between the legs 2 and 3, the bearing part 8 is held in such a way that the horizontal bearing sections 13 and 14 rest against the legs 2 and 3 from below. Since the Q-shaped section 11 widens upwards and rests with prestress on the bearing blocks, the brake bracket cannot fall out downwards.

In Fig. 1, an arrow is drawn, which indicates the direction of rotation in which the bearing part 8 must be moved in order to bring it out of its position of use between the legs 2 and 3 again.

In the second embodiment shown in FIG. 7, the ski brake designated overall by 45 comprises a bearing part 46 on which bearing blocks 41 and 42 are arranged, which on their mutually facing sides are provided with control surfaces 43 and 44 corresponding to the control surfaces 29 and 30 in the first exemplary embodiment are used to deform the brake bracket 7 when pivoted. The bearing part 46 also has a support part 47 connecting the two bearing blocks 41 and 42, which is designed as a shell, and in the longitudinal direction of the pivotable binding part designed as a touring frame has upwardly and inwardly curved edge regions 48 and 49, of which legs 2 and 3 of the touring frame in the use position of the ski brake 45 are partially encompassed, the bearing blocks 41 and 42 abutting the inside of the legs 2 and 3 in this use position. In order to be able to bring the ski brake 45 into the position of use, the edge regions 48 and 49 are elastically bent outwards so that the legs 2 and 3 of the pivotable binding part 1, i.e. of the touring frame, into which receptacles formed by the edge areas 48 and 49 on the one hand and the outside 50 and 51 of the bearing blocks 41 and 42 on the other hand can snap in, which is not possible without this deformation because the edges 52 and 53 of the edge areas 48 and 49 are so close to the outer sides 50 and 51 of the bearing blocks 41 and 42 reach that this remaining distance is smaller than the diameter of the legs 2 and 3. As a result, the ski brake 45 is held on the touring frame 1, the locking on the touring frame, ie the ski brake is fixed at a specific place on the touring frame by means of a latching tongue 54 which is integrally formed on the shell 47 and which can be latched into the opening 10 of the sole receiving web 4. The shell 47 thus takes over the function of the connecting webs 21 and 22 for the bearing blocks 19 and 20 and the spacer 9 in the embodiment according to FIGS. 1 to 6.

Around the ski brake on the pivotable binding part, i.e. to fix to the touring frame, it is also possible to arrange the bearing blocks 41 and 42 slidably on the shell 47 in order to prevent the edge regions 48 and 49 from bending apart if the shell 47 is made of a material which does not have the necessary elastic properties has that are necessary in order to be able to bend the edge areas so far apart that the legs 2 and 3 can be accommodated between the bearing blocks and the ran areas.

The tread plate 12 can also be arranged pivotably on the 0-shaped part 11 of the brake bracket 7 in order to facilitate the pivoting of the brake bracket by the ski boot.

As in the first embodiment, the bearing blocks 41 and 42 are provided on their underside with downwardly open bearing recesses 55 and 56, in which the horizontal bearing sections 13 and 14 are completely accommodated. The brake bracket is held here by the upwardly obliquely widening Q-shaped part with pretension between the bearing blocks, so that it can not fall down despite a recess 57 in the support member 47. The recess 57 in the support part 47 is necessary so that the brake bracket with its horizontally running bearing sections can be arranged below the legs 2 and 3 of the touring frame. Supporting tabs 58 and 59 of the supporting part 47 are bent downward on both sides of the recess 57 and form inclined surfaces on which the bearing blocks provided with corresponding inclined surfaces rest, as is the case with the first embodiment and can be seen particularly clearly from FIG. 3.

Claims (13)

1. Combination of a touring ski binding and ski brake (6, 45), in which the ski brake is secured to the pivotal binding part (1) and is movable into the braking position independently of the binding parts, the ski brake (6, 45) being releasably arranged on the pivotal binding part (1), and the ski brake (6; 45) having a bearing part (8; 46) which on its outer regions has recesses (35,36 or 48, 50; 49, 51) which serve to mount the ski brake (6, 45) on the pivotal binding part (1), and in that there is provided on the bearing part (8; 46) a locking device (9, 9'; 47, 54) which forces the bearing part against the pivotal binding part (1) in the longitudinal direction thereof.

2. Combination according to Claim 1, characterised in that the bearing part (8) is constructed of two bearing blocks (19, 20) and a connecting web (21, 22) connecting the bearing blocks, and in that the bearing blocks (19, 20) are provided on their sides parallel to the ski edges with receiving grooves (35, 36) for the limbs (2, 3) of the pivotal binding part (1) constructed as a touring frame.

3. Combination according to Claim 1, characterised in that the bearing part (46) is constructed of two bearing blocks (41, 42) and a carrier part in the form of a dish (47) which in the position of use of the ski brake (45) lies against the underside of the pivotal binding part (1) and partially encircles with its elevated and inturned edge regions (48, 49) the limbs (2, 3) of the pivotal binding part constructed as a touring frame, which limbs are received between the edge regions and the bearing blocks (41, 42).

4. Combination according to Claim 2 or 3, characterised in that control surfaces (29, 30; 43, 44) for deforming an elastically deformable braking bow (7) of the ski brake (6; 45) mounted in the bearing part are provided at the mutually facing sides of the bearing blocks (19, 20; 41, 42).

5. Combination according to Claim 2, characterised in that the receiving grooves (35, 36) of the bearing part (8) are turned inwardly at at least two diagonally opposed corners of the bearing part in a curved manner (37, 38) and have a mutual spacing which substantially corresponds to the spacing between the two limbs (2,3) of the pivotal binding part (1).

6. Combination according to Claim 5, characterised in that the mutual spacing of the curved receiving grooves (37, 38) in the region of the transition (39, 40) to the rectilinear extension is somewhat greater than the spacing of the limbs (2, 3) of the pivotal binding part (1).

7. Combination according to Claim 1 and one of Claims 2, 5 and 6, characterised in that the locking device is constructed as a spacer (9) pivotally mounted on the bearing part (8) of the ski brake (6) and insertable with its free end (9') in a recess (10) of a front or rear sole receiving web (4).

8. Combination according to Claim 7, characterised in that the spacer (9) is constructed as a U-shaped wire bow and is hinged with its free ends to horizontally extending bearing sections (13, 14) of the braking bow (7).

9. Combination according to Claim 8, characterised in that the wire bow (9) at its closed end has a tongue-shaped offset portion (9') which is insertable in an opening (10) of a sole receiving web (4) of the pivotal binding part (1).

10. Combination according to Claims 1 and 3, characterised in that the locking device is constructed as a latch tongue (54) arranged on the dish (47) and insertable in an opening (10) of a sole receiving web (4).

11. Combination according to Claim 2, characterised in that the connecting web comprises two spaced apart connecting plates (21, 22) which are inclined about an axis extending transversely of the longitudinal axis of the pivotal binding part (1) and are arranged on pitched surfaces (23, 24) on the underside of the bearing blocks (19,20) which have their maximum thickness dimension in the centre and their minimum thickness dimension at the front and rear edges as considered in the longitudinal direction of the ski.

12. Combination according to one of Claims 1 to 11, characterised in that the bearing part (8; 46) of the ski brake (6; 45) and of the braking bow (7) in the inoperative position have a height which corresponds at most to the height of the sole receiving webs arranged on the pivotal binding part (1), and in that the Q-shaped part of the braking bow (7) is between the limbs (2, 3) of the pivotal binding part (1).

13. Combination according to one of Claims 2 to 12, characterised in that the braking bow (7) is received by means of horizontal bearing sections (13, 14) in bearing recesses (25, 26; 55, 56) open towards the bottom and is held by the Q-shaped part (11) obliquely outwardly widened above the bearing blocks with pre-tension against the bearing blocks (19, 20; 41, 42), and in that the bearing sections (13, 14) are below the limbs (2, 3) of the pivotal binding part (1) in the position of use.

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