DE2707839A1 - Ski brake operated by sole of ski-boot - has actuating bow pretensioned through torsion spring and brake arms extending sideways from ski - Google Patents

Abstract

Ski brake to be attached below the ski boot sole has at least one brake arm swivelling around a transverse axis and extending sideways from the ski. An actuating bow extends above the ski and is rigidly coupled to it. The bow is pre-tensioned through spring pressure towards an upper end position when the brake arm is in its swivelled out downwards operating position and is adjustable against the spring tension through the action of the ski boot sole to a lower end position when the brake arm is in its withdrawn position. A torsion spring (14) located in, or close to, the level of the bow (12) is attached with one end to the bow (12) and with the other end to a lever supported on a fixed section vertical to the ski's surface on the side of the transverse axis facing the bow.

Description

Ski brake

The invention relates to a ski brake that can be attached below the shoe sole with at least one pivotable about a transverse axis and extending laterally from the ski Brake arm rnd a rigidly coupled to it, extending above the ski Operating bracket, which by spring force to an upper end position, in which the Brake arm is in its downwardly pivoted effective position, too biased is and against the spring force through the shoe sole in a lower end position which the brake arm is in its inoperative position above the underside of the ski is located, is adjustable.

It is already known (DT-OS 25 31 468), the actuating bracket itself resilient properties are only required for raising the brake arms To get spring force. The known ski brake, however, requires a specially trained one Bearing block, a rather complex operating bracket and quite a lot Place. Brake arms and actuating brackets are made of the same wire material, see above that this has both the necessary finishing properties as well as the required has stability.

With regard to the wire material used, a compromise must be made between optimal suspension properties and optimal stability for braking behavior the brake arms can be found.

The spring force for raising the brake arms is also already known by a special spring, e.g. a leaf spring.

The aim of the present invention is to provide a ski brake of the genus mentioned at the beginning, which is not part of the Actuating bracket or the brake arms forming spring works, but the Space requirement for the spring elements is minimal, nevertheless a high specific one There is spring energy and only a narrow one that can be easily attached to the ski Bearing block is required.

To solve this problem, the invention provides that one in or Torsion spring arranged near the plane of the bracket with one end non-rotatably on the bracket and the other end is rotatably attached to a lever on the the side of the transverse axis facing the bracket on a fixed perpendicular to the ski surface Part supports. This solid part is expediently a substantially above the width of the ski, but very much in the longitudinal direction of the ski narrow plate, on the sides of which the bearings for the rotary guide of the operating bracket or the brake arms are attached. For example, the plate can easily be moved attach to the ski with two screws. The ski is then braced not. Because of this training, the space required for the spring elements is very high small amount. The step plate generally provided on the operating bracket can be used for Partly hollowed out or broken through, so the torsion spring is practically empty additional space can be accommodated kar: r. The activity fee is seen in plan view, it is U-shaped in such a way that it crosses one another to the longitudinal direction of the ski extending transverse arm and two adjacent to the loin, Has side arms pointing in the longitudinal direction of the ski. Another advantage of the invention Ski brake consists in the fact that it works very close to a step-in principle Heel binding can be used with the brake arms pointing backwards. According to the invention, no space is required for spring elements behind the bearing block. The step plate arranged on the actuating bracket thus comes into the heel area of the ski boot, so that there is no risk of the step plate or the operating bracket impaired in their function by any recesses that may be present on the shoe sole will.

By using the torsion spring, a high specific Spring energy can be achieved, what the small space requirement for the spring elements also comes towards you. The function of the torsion spring is also through penetration Not affected by snow or ice.

It is of particular importance that the ski brake optimizes the Spring element, the operating bracket and the Brake arms allowed, because the material can be chosen differently. In general, the operating bracket and the brake arms from a very solid and the stresses during braking optimally made of the appropriate material, while the torsion spring alone is to be dimensioned according to the most favorable suspension properties.

Preferably, a torsion wire extends parallel to at least one of the side arms of the bracket. In principle, however, the Toraion spring can be used within the plane of the operating bracket extend in any direction.

A preferred embodiment is designed so that the torsion wire arranged within a step plate and in the direction perpendicular to its plane is held. Because of this training, the torsion spring will bend prevented, because according to the invention it is performed so that when you press the The operating bracket can only be twisted, but not bent.

Torsion wires are preferred parallel to both side arms of the bracket provided, which expediently by a parallel to the cross arm of the bracket extending crosspiece are connected. The crosspiece and the One-piece torsion wires. The cross piece is not only used for connection of the two laterally arranged torsion wires, but also has the function of the ends of the torsion wires facing the bracket relative to the bracket to keep torsion-proof.

However, it is also possible for the torsion wires to have bent ends have which are attached to the cross arm of the bracket.

To allow the abs to move freely, support the ends of the hegel To ensure the storage platform, according to a further embodiment, the earths the lever is guided into a small roller which rests on the bearing plate and rolls on this when the operating bracket or the brake arms between their both end positions can be moved. The bearing plate should move in the longitudinal direction of the ski extend so far that the role in every position of the operating bracket on this rests.

It is particularly favorable in terms of production if the lever is with the torsion spring consists of one piece.

The spring energy accommodated in the ski brake according to the invention can be further increased by also supporting the torsion spring Lever is made of spring material. This also provides the leverage for provision the required spring force can also be used.

The torsion wire can also have two bends at one end, which are attached to the transverse or side arm of the bracket. In this embodiment if the torsion wire is not held by a step plate or sheath, see above that, in addition to torsion, it can also be loaded with bending prestress. For this purpose, the torsion wire is expediently bent downwards out of the plane of the bracket.

Another advantageous embodiment is characterized in that that one or more torsion wires extend parallel to the cross arm of the bracket. The torsion wires and spacers expediently consist of one Piece.

The bent end of the one closest to the cross arm of the bracket rr Torsion wire is preferably attached to one side arm of the bracket.

In this embodiment, the torsion wires are meandering Bending a spring wire produced, it is particularly advantageous if two parallel to the. Cross arm of the bracket, connected by an intermediate piece Torsion wires are provided. As a result, the spring energy can only be compared to one The only torsion wire that extends across the width of the bracket is already present can be increased twice.

According to a further particularly preferred embodiment is on the bracket arranged at least one torsion tube. However, there are preferably several Torsion tubes with different diameters coaxially on top of each other and relative Arranged rotatable with respect to one another, with adjacent ends of the tubes alternating are firmly connected to each other. In this way, it takes up little space a very large torsional length can be achieved. The pen vote is therefore not limited to a maximum torsion length of the ski width, but can be optimal take place.

The support lever is advantageously on that of the fastening point attached to the bracket opposite end of the assembly of torsion tubes. In particular the torsion tubes run parallel to the cross arm of the bracket, although they are basically could also be arranged on the side arms.

The power transmission between the torsion tubes and the support lever takes place preferably in that between the lever and the arrangement of torsion tubes a transmission tube is connected, which is arranged coaxially to the torsion tubes and is rotatable relative to them. The transfer tube should be much less be designed to be twistable than the torsion tubes, which can be achieved, for example can that it @@ ek @ andiger than the torsion tubes. In particular if the lever is a sheet metal attached to the transmission tube, turn one relatively Uniform transfer of the resulting element to the sheet metal across the width of the ski achieved.

The spring properties can be further improved in that the sheet metal is also resilient. The sheet metal can 1 nde from the transfer tube remote end be provided with a roller, so that it is without essential Can support friction on the bearing plate.

The determination is made in the following, for example, with the aid of the drawing described; in this shows: FIG. 1 a partially sectioned side view of a first embodiment of the ski brake according to the invention in its operative position, FIG. 2 shows a view of the ski brake according to FIG. 1 in the direction of arrow I, FIG. 3 a top view of the ski brake according to FIGS. 1 and 2 in the closed ineffective Position, whereby the representation to simplify the drawing on the (= axis of symmetry) Area to the left of the longitudinal axis of the ski / is restricted, FIG. 4 an analogous to FIG. 3 View of a further embodiment, FIG. 5 shows a view analogous to FIG. 2 Embodiment according to FIG. 4, FIG. 6 shows a plan view of another one analogous to FIG. 3 Embodiment, FIG. 7 shows a view of the embodiment according to FIG. 2 analogous to FIG 5, 8 show a partially sectioned side view of a further embodiment a ski brake according to the invention, 9 shows a partially broken away Top view of the object of FIG. 8 in the closed, inoperative position, and FIG. 10 is a partially sectioned plan view of yet another embodiment a ski brake according to the invention in the closed, inoperative position.

According to FIGS. 1 to 3, the ski brake according to the invention consists of one essentially flat, narrow in the longitudinal direction of the ski and essentially extending over the width of the ski extending bearing plate 18, on the sides of the bearing blocks 17 for receiving of the shafts 23 of the operating bracket 12 and the brake arms 16 are attached. the Bearing plate 18 is in a manner not shown, for example by means of two screws on also attached ski, not shown.

The actuating bracket 12 is essentially U-shaped in plan view. It is bent outward in the area of the bearing blocks 17 to form the bearing shaft 23. Outside the bearing blocks 17, the brake arms 16 connect, which are laterally of the ski either obliquely downward as shown in FIG. 1 or in the inoperative position 3 to the rear according to FIG. The operating bracket 12, the bearing shafts 23 and the brake arms 16 are preferably made of one and the same wire material.

According to FIGS. 1 to 3, the operating bracket 12 is at least in his front areas embedded in a step plate 13, which also have recesses 24 for two torsion springs 14 which extend parallel to the side arms of the Bracket 12 extend within the same. A cross piece 14å connects the two Torsion springs 14. At their rear ends, the torsion springs 14 go into one obliquely inwardly and downwardly extending support lever 19 about which is provided with a stub 25 which engages in a role 15. The roller 15 thus connects the two levers 19 of the torsion wires 14 and lies on the bearing plate 18.

The bent shape of the support lever 19 of the torsion spring 14 results can be seen particularly clearly from FIG. 2. Between those in the roller 15 At the ends of the lever 19 there is a distance 26 which is to be dimensioned so that at the transition of the lever 19 in the plane of the operating bracket 12 when transferring in the inoperative position according to FIG. 3, the ends of the levers 19 move inward can.

Accordingly, there must also be a certain amount of play between the ends of the levers 19 and the bearing bores provided for them in the roller 15 are present.

The crosspiece 14a, the torsion springs 14 and the support levers 19 including their ends 25 preferably consist of one piece and the same springy wire material.

As can be seen particularly clearly from FIG. 3, the geometry is like this to choose that in the closed, inoperative position of the brake between the Transverse axis 11 of the operating bracket and the axis of the roller 15 a resultant Lever arm A remains. This ensures the opening moment for the ski brake. By increasing or reducing the lever arm A, the size of the moment and thus the required hold-down force for the ski brake by the shoe varies will.

The ski brake is activated by placing the ski boot on the step plate 13 from the braking position according to FIGS. 1 and 2 into the inoperative position according to FIG. 3 transferred, the support levers extending obliquely inward and downward are 19 moved in the plane of the operating bracket 12, the torsion wires 14 to their longitudinal axis are twisted. The crosspiece 14a ensures the required Deposition of the front Ends of the torsion wires 14 against rotation. In the inoperative position according to FIG. 3, the levers 19 and the torsion wires are located 14 essentially in the same plane.

As soon as the shoe is removed from the binding, the in the Torsion wires 14 stored force become effective by the support lever 19 be pivoted back down, the bracket 12 and the brake arms 16 in the position according to FIG. 1 can be issued.

Since the support lever 19 is made of the same material as the torsion wires 14 exist, they are stressed both by bending and by torsion. The main part of the return spring force, however, is caused by the torsion wires 14 caused.

In the embodiment according to FIGS. 4 and 5, the two ToDion wires are 14 not connected to one another by a crosspiece. Rather, they point to theirs front ends a bend 14b on FIG. 1 which, for example, by a rivet 27 is attached to the cross arm of the bracket 12. The end 25 of the lever 19 points in this If there is no roller to reduce friction, it lies directly on the bearing plate 18 on.

Just like Fig. 1 in dash-dotted lines also the closed, indicates ineffective position of the ski brake, Fig. 5 shows in dashed lines the change in angle of the bent wire spring part caused by torsion.

In the embodiment according to FIGS. 6 and 7 are again separate Torsion springs 14 are provided on both sides of the central longitudinal axis 28. In contrast however, the torsion wires 14 do not become the previous embodiments held by a step plate or sheathing, so that it is not only twisted, but also bent elastically will. This can increase the size the spring travel of the torsion spring 14 can be achieved.

The torsion spring 14 goes back to one end in the Bearing plate 18 supporting support lever 39 over. Are on the opposite end two bends 14b, 14c are provided, by means of which the torsion spring 14 at 28 and 29 is attached to the transverse or side arm of the bracket 12.

In the view of FIG. 7, the protrusion is essential for the invention of the lever 19 from the plane of the actuating bracket 12 or the brake arms 16 in detail shown.

In the embodiment of FIGS. 8 and 9, the torsion wires are 14 arranged transversely to the longitudinal axis of the ski.

Two torsion wires extending transversely within the operating bracket 12 14 are connected to one another by a short intermediate piece 14d pointing in the longitudinal direction of the ski tied together. The front torsion wire 14 has a bend 14c, which at 30 and 31 is attached to one side arm of the bracket 12. From the rear of the two torsion wires 14, the support lever 19 is shown in FIGS. 8 and 9 Way turned. The lever 19 opens again into a bearing plate 18 resting on it Role 15.

Due to the bending of the lever 19 shown in FIG below there is a support of the spring action by the lever 19, since this just like the intermediate piece 14d and the bend 14c made of the same wire material how the torsion wires 14 is made. It is particularly favorable in terms of production if the structure consisting of the elements 14, 14c, 14d and 19 from one and the same resilient wire material is bent.

When the actuating bracket 12 is pressed down in accordance with FIG. 8 into the position According to Fig. 9, the wires 14 are twisted, whereby the required restoring torque is produced. Small contributions for the Rückstellmament are also made by the intermediate piece 14d and the support lever 19 supplied.

In the embodiment of FIGS. 8 and 9, the torsion wires are 14 not held by a step plate.

In the embodiment according to FIG. 10, the same reference numerals are used corresponding parts as in the previous exemplary embodiments.

According to FIG. 10, a torsion tube is over the transverse arm of the actuating bracket 12 14 ', which runs coaxially to the transverse arm and is rotatable on this. One end of the torsion tube 14 'is at 20, e.g., by welding on the operating bracket 12 attached.

The torsion tube 14 'is coaxial and rotatable relative thereto Transfer tube 21 pushed, which with the facing away from the fastening point 20 End at 32 also e.g. by welding to the other end of the torsion tube 14 'is firmly connected. On the transfer tube 21 is a supporting lever forming Spring plate 19 attached, the end facing away from the transmission tube 21 over a shaft 22 carries the support roller 15, which again with the surface of the bearing plate 18 is engaged.

While the tube 14 'should be resiliently twistable, the transmission tube is 21 preferably thick-walled, so that it is relatively the resulting Nojent evenly across the width of the ski to the ibstütibleoh 19.

The mode of operation of the embodiment according to FIG. 10 is analogous to that according to dsg torangehendzn exemplary embodiments. The.

resilient design of the plate 19 can improve the spring properties be exploited.

In the manner shown in FIG. 10 for the tubes 14 'and 21 also several torsion tubes 14 'with different diameters pushed one on top of the other and are mutually connected to one another at their end faces. So that can a torsional length can be achieved which is a multiple of the width of the transverse arm of the operating bracket 12 is.

- patent claims - L e r s e i t e

Claims (25)

P a t e n t a n 5 p r ii c h e g that can be attached below the shoe sole Ski brake with at least one pivotable about a transverse axis, sideways from 3ki extending brake arm and a rigidly coupled with it, above the Skis extending operating bracket, which by spring force to an upper end position, in which the brake arm is in its effective position pivoted downwards, is too biased and against the spring force through the shoe sole in a lower End position in which the brake arm is in its inoperative position is located above the underside of the ski, is adjustable, thereby g e k e n n -z e i c h n e t, daEZ a torsion spring arranged in or near the plane of the bracket (12) (14, 14 ') with one end non-rotatably on the bracket (12) and with the other end non-rotatably is attached to a lever (19) which is on the bracket (12) facing Side of the transverse axis (11) is supported on a part (18) which is fixed perpendicular to the ski surface. 2. Ski brake according to claim 1, characterized in that g e k e n n z e i c h -n e t, there is a torsion wire (14) parallel to at least one of the side arms of the bracket (12) extends. 3. Ski brake according to claim 2, characterized in that g e k e n n z e i c h -fl e t, because the torsion wire (14) is arranged within a step plate (13) and in Direction is kept perpendicular to the plane. 4. okibremse according to claim 3, characterized g e k e n n z e i c h -n e t, daX, torsion wires (14) are provided parallel to both side arms of the bracket (12) are. 5. Ski brake according to claim 4, characterized in that g e k e n n z e i c Ii -n e t that the torsion wires (14) through a sicn parallel to the cross arm of the bracket (1 °) extending crosspiece (1'-t) are connected. 6. Ski brake according to claim 51, thereby g e k e n n z e i c h -n e t that the cross piece (14a) and the torsion wires (14) consist of one piece. 7. Ski brake according to claim 4, characterized in that it k e n n z e i c h -n e t that the torsion wires (14) have bent ends (145) which at the transverse arm of the bracket (12) are attached. 8. Ski brake according to one of claims 4 to 7, characterized g e -k e n n z e i c h n e t that the ends of the levers (1 ') are guided in a common roller (15) are. 9. ski brake according to one of the preceding claims, characterized g e it is not indicated that the lever (19) with the torsion spring (14) consists of one Piece consists. 10. Ski goggle according to one of the preceding claims, characterized g ek It is noted that the lever (19) is also made of spring material. 11. Ski brake according to one of claims 2 and 4 to 10, characterized g e it is not noted that the torsion wire (14) has two turns at one end (14b, c) which is attached to the transverse or side arm of the bracket (12) are. 12. Ski brake according to claim 11, characterized in that it k e n n z e i c h -n e t that the torsion wire (14) bent downwards out of the plane of the bracket (12) is. 13. Ski brake according to one of claims 1 and 8-10, characterized g e k e n n z e i c h n e t that one or more torsion wires (14) are parallel to the Extend the transverse arm of the bracket (12). 14. Ski brake according to claim 13, characterized in that it k e n n z e i c h -ii e t that the torsion wires (14) and intermediate pieces (14d) consist of one piece. 15. Ski brake according to claim 13 or 14, characterized in that g e k e n n -z e i c h n e t that the bent end (14c) of the cross arm of the bracket (12) is closest lying torsion wire (14) attached to one side arm of the bracket (12) is. 16. Ski brake according to one of claims 13 to 15, characterized g e k e n n z e i c h n e t that two parallel to the transverse arm of the bracket (12), torsion wires connected by an intermediate piece (14) are provided. 17. Ski brake according to one of claims 1 and 8 to 10, characterized g e I do not know that there is at least one torsion tube (14 ') on the bracket (12) is arranged. 18. Ski brake according to claim 17, characterized in that g e k e n n z e i c h -n e t that several torsion tubes (14 ') with different diameters coaxially on top of one another and are arranged rotatably relative to one another, with adjacent ends the pipes are alternately firmly connected to each other. 19. Ski brake according to claim 17 or 18, characterized in that g e k e n n -z e i c h n e t that at the opposite of the fastening point (20) on the bracket (12) End of the arrangement of torsion tubes (14 ') the lever (19) is attached. aD. Ski brake according to one of Claims 17 to 19, characterized in that it is g e k e nn z e i h n e t that the torsion tubes (14 ') parallel to the cross arm of the bracket (12) run. 21. Ski brake according to claim 19 or 20, characterized in that g e k e n n -z e i c h n e t that between the lever (19) and the arrangement of torsion tubes (14 ') a transmission tube (21) is connected, which is coaxial with the torsion tubes (14 ') is arranged and rotatable relative to them. 22. Ski brake according to claim 21, characterized in that it is e k e n n z e i c h -n e t that the transfer tube (21) is much less twistable than the torsion tubes (14 ') is formed. 23. Ski brake according to claim 21 or 22, characterized in that g e k e n n -z e i c h n e t that the lever is a sheet metal (19) attached to the transfer tube (21) is. 24. Ski brake according to claim 23, characterized in that it is e k e n n z e i c h -n e t that the plate (19) is resilient. 25. Ski brake according to claim 23 or 24, characterized in that g e k e n n -z e i c h n e t that the plate (19) at the end facing away from the transmission tube (21) is provided with a roller (15).