WO1979000572A1 - Frein pour ski muni d'une fixation de securite - Google Patents

Frein pour ski muni d'une fixation de securite Download PDF

Info

Publication number
WO1979000572A1
WO1979000572A1 PCT/CH1979/000014 CH7900014W WO7900572A1 WO 1979000572 A1 WO1979000572 A1 WO 1979000572A1 CH 7900014 W CH7900014 W CH 7900014W WO 7900572 A1 WO7900572 A1 WO 7900572A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
ski
arm
brake arm
guide cam
Prior art date
Application number
PCT/CH1979/000014
Other languages
German (de)
English (en)
Inventor
H Wehrli
Original Assignee
H Wehrli
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by H Wehrli filed Critical H Wehrli
Publication of WO1979000572A1 publication Critical patent/WO1979000572A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C7/00—Devices preventing skis from slipping back; Ski-stoppers or ski-brakes
    • A63C7/10—Hinged stoppage blades attachable to the skis in such manner that these blades can be moved out of the operative position
    • A63C7/1006—Ski-stoppers
    • A63C7/1013—Ski-stoppers actuated by the boot
    • A63C7/102—Ski-stoppers actuated by the boot articulated about one transverse axis
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C7/00—Devices preventing skis from slipping back; Ski-stoppers or ski-brakes
    • A63C7/10—Hinged stoppage blades attachable to the skis in such manner that these blades can be moved out of the operative position
    • A63C7/1006—Ski-stoppers
    • A63C7/1013—Ski-stoppers actuated by the boot
    • A63C7/102—Ski-stoppers actuated by the boot articulated about one transverse axis
    • A63C7/1026—Ski-stoppers actuated by the boot articulated about one transverse axis laterally retractable above the ski surface

Definitions

  • the invention relates to a brake for fastening on a ski provided with a safety ski binding, which has at one end a brake spur and at its other end a protruding into the area of the ski binding, which can be brought into contact with a ski boot inserted into the ski binding and has a spring element which tries to bring the brake arm into the braking position.
  • Ski brakes with a pivotable brake arm are known in many designs. They are comparatively simple in their construction and essentially consist of a wire-shaped bracket carrying two brake spurs, which is rotatably mounted on the top of the ski by means of axles and also has a spring element such that it is capable of carrying out the in the bracket located in the rest position with the brake spurs when removing the ski boot from the ski binding into the braking position and holding it there with such a force that it can perform its braking function.
  • the known ski brakes of this embodiment have the Disadvantage that in the rest position a relatively large force is exerted by the spring element on the bracket and thus on the sole of the ski boot, while the holding force of the spring element is usually just about sufficient in the braking position. If you want to reduce the difference between the spring force in the rest position and the holding force in the braking position, these ski brakes require additional elements, which makes their production more expensive.
  • the object of the present invention is a ski brake in which the difference between the spring force in the rest position can be chosen as desired and a sufficient holding force is available in the braking position - without complicating the structure of the ski brake, but with a minimum of construction elements.
  • the brake arm is pivotally mounted on a guide cam which lies between the brake arm and the spring element, the latter of which at least one end is connected to the brake arm.
  • FIG. 1 is a side view of a ski brake arranged on a ski with a brake arm in the braking position
  • FIG. 2 is a plan view of a ski brake according to FIG. 1 while driving with two brake spurs connected to a bracket,
  • FIG. 3 is a side view of another ski brake arranged on a ski in the braking position
  • Fig. 4 is a side view of the ski brake of FIG. 3 in the driving position
  • FIG. 5 is a top view of the ski brake of FIGS. 3 and 4.
  • a ski 1 is partially shown, on the upper side of which part A of a safety ski binding, for example an automatic heel unit, is attached.
  • a ski brake an ⁇ eordnet having at least one Brems ⁇ arm 2, which at its one end a brake rod 3 and at its other end an actuating device, for example an over the top of the ski 1 protruding step rod 4 to be operated from the heel or from the sole of the ski shoe.
  • the brake arm 2 has a central part 5, formed by offsets 6, 7 and offset relative to the other parts of the brake arm 2, which in the braking position shown in FIG. 1 bears against a contact surface 14 of a guide cam 10.
  • the brake arm 2 is in its position according to .Fig. 1 pivoted by a spring element 17 and held with a certain bias.
  • the spring element 17 is designed as a helical spring 18, which partially engages around the guide cam 10, ie on approximately half the circumference, and is connected to the brake arm 2 with its hook-shaped ends 19, 20 in the cranked portions 6, 7.
  • a leaf spring could also be used. The leaf spring engages around the guide cam 10 on the side opposite the support surface 14 in a manner similar to the helical spring 18, but is only connected at one end to the one end of the brake arm 2.
  • the brake arm 2 on one side and the spring element 17, ie also the leaf spring, are arranged on the other side of the guide cam 10, ie the guide cam 10 is located between the brake arm 2 or its middle part 5 and the spring element 17 , which in turn is connected to the brake arm 2 at at least one end.
  • the guide cam 10 is fastened by means of a base on the upper side of the ski 1, which is composed of a base plate 11 and a holding leg 12 connecting the guide cam 10 to the base plate 11.
  • the guide cam 10 can be made of metallic or non-metallic materials.
  • a plastic is also suitable, e.g. the plastic known under the brand name "DELRIN".
  • the Skibre se shown in Fig. 2 has two of the brake arms 2 shown in Fig. 1, which are connected by an actuator designed as a step rod 4.
  • Each brake arm 2 has a guide cam 10 which is designed in the same way as in the ski brake shown in FIG. 1.
  • the brake arms 2 are shown in the rest position, i.e. they are pivoted relative to the position shown in FIG. 1 parallel to the top of the ski 1. In this position, the brake arm 2 lies in a bearing part 15 of the guide cam 10 directed against the ski surface.
  • a plate B connected to the part can be used for fastening the foot plates 11 of the two guide cams 10.
  • the base plate 11 has a bore 25 which is aligned with a corresponding bore in the plate B and through which a screw, not shown, is screwed in, as a result of which the plate B and the base plate 11 are held on the upper side of the ski 1 a separate cover plate can be used to attach the foot plates 11 to the top of the ski 1. Since the base plate 11 has only one bore 25, the base plate 11 can be pivoted about the axis of this bore 2. This makes it possible to connect the brake to one
  • the guide cam 10 must always be arranged in the correct position opposite the longitudinal edge of the ski.
  • the position of the guide cam 10 can be maintained by a stop 13 on the base plate 11, which protrudes over the longitudinal edge of the ski 1.
  • the base plate 11 has a toothing 26 which enables the base plates 11 to engage with one another.
  • the ski brake described in FIGS. 3 to 5 additionally enables the brake arm to be mounted so that it can be moved laterally, so that it can be moved over the ski and away from the longitudinal edge of the ski, so that the brake spur contacts the terrain even when the skis are extremely inclined relative to the terrain with the snow surface is practically impossible.
  • the brake arm 2 is pivoted into its position by the helical spring 18 and held with a certain preload, and the helical spring 18 also engages around the guide cam 10, but it engages the ends 19, 20 on the one hand on the offset 6 of the brake arm 2 and on the other hand on a hook 13 arranged on the holding leg 12 (FIGS. 3 and 4).
  • the brake arm 2 and the spring 18 are arranged on opposite sides of the guide cam 10, i.e. the guide cam 10 lies between the brake arm 2 or its central part 5 and the spring 18.
  • this is a ski brake with two brake arms which are connected to one another via the step rod 4 and form a bracket.
  • the holding leg 12 with the guide cams 10 for the two brake arms 2 are connected to each other by the foot plate 11 and attached to the top of the ski.
  • Part of a safety ski binding for example an automatic heel unit, can be arranged between the two holding legs 12.
  • a bearing nose 9 is arranged, which has approximately the shape of a semicircular pin.
  • a bearing bend 8 is formed, which corresponds to the rounding of the bearing lug 9.
  • the support bracket 8 ensures that the brake arm 2 has a defined bearing on the guide cam 10.
  • the bearing arch 8 ensures that the part of the brake arm 2 which carries the brake spur 3 is offset from the central part 5 by a certain distance 31. If the brake arm 2 is in the driving position, see Fig. 4, i.e. pivoted approximately parallel to the ski 1, the brake spur 3 is about the measure 31 higher above the upper side of the ski 1 than the rest of the brake arm 2. As a result, it can practically no longer come into contact with the snow surface, even if the ski 1 is strong is inclined to the snow surface.
  • the position of the two brake spurs 3 combined to form a bracket can also be influenced in that a link 30 is provided on the holding leg 12, which starts from the longitudinal edge at the top of the ski 1 and extends upwards and inwards .
  • the brake arms 2 rest on the scenes 30.
  • the brake spur In the braking position, the brake spur extends outside the longitudinal edge of the ski, while in the driving position it can shift inwards into the position shown in dashed lines, so that it no longer lies next to but above the ski 1, which means that it is even further out of contact with the snow ⁇ surface is arranged.
  • the bracket consisting of two brake arms 2 and the step rod 4 is
  • the brake arms 2 bear against the link 30 with pre-tension and move automatically along the link 30 from the braking position to the driving position.
  • the shape of the backdrop 30 can be selected differently, and it expediently has a flank perpendicular to the top of the ski directly in the vicinity of the top of the ski. If the brake spur 3 reaches the area of the ski 1 during the transition from the braking position into the driving position, the link 30 'has an inwardly inclined surface. From FIG. 5 it can be seen that the guide cams 10 then allow the brake arms 2 to be laterally displaced from the extended position to the dashed position on the holding leg 12.
  • the distance 31 of the brake spur 3 results in relation to the central part 5 of the brake arm 2.
  • the distance 31 can, however, also be chosen to be larger, which is due to the corresponding shaping of the transition from the bearing arch 8 into the bearing of the brake spur 3 Part of the Brems ⁇ arms 2 is reached.
  • the ski brakes described are extremely simple and consist only of the brake arm or arms 2, the spring element 17 and the guide cam 10.
  • the guide cam 10 can also have a different shape than in Fig. 1 and e.g. consist of individual cones. In this case too, the guide cam 10 formed by the pins lies between the brake arm 2 and the spring element 17 connected to the brake arm 2.
  • ski brakes described can also be arranged at a different location on the ski than is shown in FIG. 1. Only the brake arm 2 needs to be designed accordingly.
  • the brake described has the advantage that the brake bracket is reliably mounted on the bearing nose 9 and nevertheless allows a lateral displacement of the brake arm 2 when it is pivoted from the braking position in FIG. 1 into the driving position according to FIG. Together with the displacement of the brake spur 3 relative to the central portion 5 of the brake arm 2 and by the guide of the brake arm to the cam 30 it is achieved that i driving position of the brake rod 3 is far 'outside a Mais ⁇ possibility with the snow surface.

Landscapes

  • Braking Arrangements (AREA)

Abstract

Le frein est muni d'un bras (2) comprenant un eperon (3) et une tige d'actionnement. Un ressort a boudin (18) est fixe au bras (2). Le bras (2) et le ressort (18) entourent une came de guidage (10) fixee au ski (1). Lorsque le bras (2) est amene de la position de freinage dans la position de repos parallele au ski, une force est creee dans l'element elastique (17) qui tend a amener le bras (2) dans la position de freinage. Le frein peut etre agence avec deux bras de freinage (2) qui sont relies par la tige d'actionnement. L'etrier ainsi obtenu est pivote sur la came de guidage (10) au moyen d'un ressort a boudin (18) dont les extremites (19, 20) sont fixes respectivement au bras (2) et a des leviers de support (12) supportant les cames de guidage (10). L'extremite de la came de guidage (10), qui est dirigee contre le ski (1), est conformee en palier, sur lequel s'appuie un arceau (8) en forme de bras, ce qui a pour resultat que l'eperon est excentre d'une valeur (31) par rapport a la partie centrale (5) du bras (2). Un guide (30) est dispose a cote de la came de guidage (10) avec lequel les bras (2) de l'etrier qui est moins large que le ski (1), sont en contact et contre lequel ils sont maintenus lors de leur pivotement. Le guide (30) est incline vers l'interieur pour que l'eperon se deplace vers l'interieur dans la position de repos. Grace a l'excentricite de l'eperon (3) de la valeur (31) et grace au maintien du bras (2) par le guide (30), l'eperon (3) est ue, dans la position de repos, au-dessus et a l'interieur de l'arete longitudinale du ski de facon a eviter pratiquement tout contact avec la surface de la neige.
PCT/CH1979/000014 1978-01-31 1979-01-31 Frein pour ski muni d'une fixation de securite WO1979000572A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH101378 1978-01-31
CH1013/78 1978-01-31
CH1296278 1978-12-20

Publications (1)

Publication Number Publication Date
WO1979000572A1 true WO1979000572A1 (fr) 1979-08-23

Family

ID=25686381

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1979/000014 WO1979000572A1 (fr) 1978-01-31 1979-01-31 Frein pour ski muni d'une fixation de securite

Country Status (6)

Country Link
EP (1) EP0009490A1 (fr)
JP (2) JPS55500062A (fr)
DE (1) DE2901533A1 (fr)
FR (1) FR2416023A1 (fr)
SE (1) SE7900409L (fr)
WO (1) WO1979000572A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980001759A1 (fr) * 1979-02-21 1980-09-04 H Wehrli Frein pour ski

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH582525A5 (en) * 1975-08-27 1976-12-15 Schwarz Guenter Ski brake with pivoted lever arm - has actuating section formed as spring hoop extending across ski
DE2702458A1 (de) * 1976-01-22 1977-07-28 Galbraith Eng Pty Ltd Unendlich variierbares uebersetzungsgetriebe
DE2613063A1 (de) * 1976-03-26 1977-09-29 Salomon & Fils F Skibremse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH582525A5 (en) * 1975-08-27 1976-12-15 Schwarz Guenter Ski brake with pivoted lever arm - has actuating section formed as spring hoop extending across ski
DE2702458A1 (de) * 1976-01-22 1977-07-28 Galbraith Eng Pty Ltd Unendlich variierbares uebersetzungsgetriebe
DE2613063A1 (de) * 1976-03-26 1977-09-29 Salomon & Fils F Skibremse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1980001759A1 (fr) * 1979-02-21 1980-09-04 H Wehrli Frein pour ski

Also Published As

Publication number Publication date
SE7900409L (sv) 1979-08-01
DE2901533A1 (de) 1979-08-02
FR2416023A1 (fr) 1979-08-31
JPS55500062A (fr) 1980-02-07
EP0009490A1 (fr) 1980-04-16
JPS54111932A (en) 1979-09-01

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