EP0220393A1 - Sicherheitsskibindung - Google Patents

Sicherheitsskibindung Download PDF

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Publication number
EP0220393A1
EP0220393A1 EP86110504A EP86110504A EP0220393A1 EP 0220393 A1 EP0220393 A1 EP 0220393A1 EP 86110504 A EP86110504 A EP 86110504A EP 86110504 A EP86110504 A EP 86110504A EP 0220393 A1 EP0220393 A1 EP 0220393A1
Authority
EP
European Patent Office
Prior art keywords
binding
safety ski
release
detent
piston
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP86110504A
Other languages
English (en)
French (fr)
Other versions
EP0220393B1 (de
Inventor
Charles Parsons
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from GB858519346A external-priority patent/GB8519346D0/en
Priority claimed from GB858520679A external-priority patent/GB8520679D0/en
Priority claimed from GB858528932A external-priority patent/GB8528932D0/en
Priority claimed from GB868601235A external-priority patent/GB8601235D0/en
Application filed by Individual filed Critical Individual
Priority to AT86110504T priority Critical patent/ATE50510T1/de
Publication of EP0220393A1 publication Critical patent/EP0220393A1/de
Application granted granted Critical
Publication of EP0220393B1 publication Critical patent/EP0220393B1/de
Expired legal-status Critical Current

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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
    • A63C9/00—Ski bindings
    • A63C9/08—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings
    • A63C9/0802—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings other than mechanically controlled, e.g. electric, electronic, hydraulic, pneumatic, magnetic, pyrotechnic devices; Remote control

Definitions

  • the invention whose description follows, is the mecha­nical element of a step in safety ski binding which allows a ski-boot with a prominent welt, to be held securely to a ski and yet release the boot, omnidirectionally, when subjected to the forces experienced in a fall. It is a development of the invention described in British Applications Nos. 85l9346 dated l August l985, 8520679 dated l9 August l985, and 8528932 dated 25 November l985, and 860l235 dated 20th January, l986, to which priority is being claimed.
  • a potentially low-cost, mechanical step-in safety ski-binding whereby a ski-boot is secured by its prominent welts to a ski, between arms, mounted on two spheroids, each in seperate bindings. Release of the ski-boot, is achieved, by the forces acting on the ski-boot, rotating the spheroids against the pressure of spring-loaded plungers, bearing in recesses in the spheroids, shaped, so as to give a different reaction in different directions, until the plungers are no longer contained.
  • the action of the plungers is controlled by detents, which unlock the constraint of the plungers on the spheroids rotation, when a piston is moved by an anti-freeze fluid, because the rate of flow of the fluid exceeds a by-pass system's capability.
  • the invention provides a cheaper, mechanical alterna­tive, to electronically monitoring the rate of increase of release forces and electrically effecting release.
  • a spheroid (3) into which two retaining arms (39) and a positioning leg (2) are fixed, and whose rear has a shaped recess (36), is mounted in a cylindrical container (34).
  • the container's closed end is hemispherical. It has a slot (l) and a shaped aperture (38) cut in it, to allow limited move­ment in any direction of the ski-boot's two retaining arms, and up and down movement of the positioning leg.
  • the arms and leg move, due to forces acting on them, via the welts and sole of the ski-boot. They can only move because the spheroid rotates in its container.
  • a spring-loaded (20) plunger (48) is in three sections, two of which are concentric (l0) (l3), locked together by inserts (l4).
  • the hemispherical head (4) of the third section (48) bears in the shaped recess in the spheroid and acts as a constraint on its rotation.
  • the sec­tion of the plunger containing the hemispherical head is separated from the two concentric sections by a compressible fluid seal (9).
  • the seal is forced against the walls of the containing cylinder (49), by the action of the release spring. Rotation of the spheroid can only occur, because of a relative displacement between the spheroid, and the plunger, against the release spring (20).
  • the Mechanical Release Unit (Fixed), is similar in its action to the Mechanical Release Unit described in para 2.2.l., in that release forces, acting on the retaining arms (39) and positioning leg (2), will cause the spheroid (3) to rotate. Because the plunger (4) is fixed, rotation of the spheroid can now only occur, by the spheroid and its container being displaced away from the plunger, by compressing the rela­tively light spheroid casing return spring (4l). This displacement, will be transmitted through the ski-boot, to the Mechanical Release Unit, against its release spring. It will cause release of the constraint of this spring, either as described in para 2.2.l., para 2.2.4., or by the rotation of the spheroid, taking the fixed plunger (43) (4), outside the limit of the shaped recess (36).
  • the release spring (20) tension is set, by adjusting the re­taining cap (24). Displacement of fluid due to adjustment, is taken up, by the compensating bag (29). This control is pre-set, according to the physical properties of the skier.
  • Control over the rate of increase in release force is set, by controlling the rate at which fluid can be displaced, by the piston part of the plunger (25), through the by-pass ports (l7) (l8). It is set by adjusting the position of the control rod (22), to set the by-pass dimensions according to the physical properties of the skier.
  • Mannual Release is achieved by sliding the release unit hous­ing (47).
  • the release unit housing is coupled to the piston (30), by the connecting rod (46) acting through the mounting block (5), the spring (8), and fluid seal (32). Sliding the housing will displace the piston (30), until the second shaped portion (50), allows the inserts to unlock the two concentric portions of the plunger from each other, and thus remove the release spring's influence on the spheroid's rota­tion.
  • the spheroid can thus move the plunger, against the re­latively light return spring (l6), so that the retaining arms no longer retain the ski-boot.
  • the limit of movement of the Connecting Rod Mount­ing Block (5) is set by the dimensions of the slot (40) in the Fixed Base Unit (45) through which the connecting rod passes.
  • the slot dimensions are such that there is sufficient clearance to prevent fouling when the plunger is displaced by the spheroid.
  • the second shaped recess (37) in the spheroids is so that, after release, the spheroids can remain in a posi­tion, suitable for reinserting a ski-boot.
  • the return springs (l6) (2l) (8) ensure that when a ski-boot is not in the binding, then the plunger and piston will adopt a position, which allows the two parts of the plunger to be locked together by the inserts (l4).
  • the spheroid container return spring (4l) After release in an upward direction, as when stepping out of the binding, the spheroid container return spring (4l), by forcing the spheroid against the fixed plung­er, will cause the second shaped recess to rotate the sphe­roid, to a position, suitable for reinsertion of the skiboot.
  • the Binding consists of a front and rear unit, at least one of which is a Mechanical Release Unit.
  • the second unit is either a Mechanical Release Unit (Fixed), or another Mechani­cal Release Unit, depending on the experience of the skier.
  • the Compensating Bag is a non-permeable, elastic bag (29), filled with a permeable, sponge-like material (26), which will allow changes in pressure and volume inside the fluid container, to balance against atmospheric pressure. It is se­cured to the casing (49) by a grub scew (28) and washer (27) which are drilled to allow atmospheric compensation.
  • Compensating Ports (ll) are drilled through applicable moving components to facilitate a free flow of fluid when these com­ponents move and to prevent seepage having a detrimental effect.
  • the release spring tension control (para. 2.2.3.l. refers) is adjusted for a given depth of the retaining cap (24) in the housing (49), and is set according to physical properties of the skier, by using the adjusting sockets (23).
  • the rate of increase in release force control (para. 2.2.3.2. refers) sets the reluctance of the binding to release. It is adjusted by:
  • the control rod (22) is set according to the prop­erties of the skier, and is set for a number of turns of the control rod from the fully regenerative position.
EP19860110504 1985-08-01 1986-07-30 Sicherheitsskibindung Expired EP0220393B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110504T ATE50510T1 (de) 1985-08-01 1986-07-30 Sicherheitsskibindung.

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
GB858519346A GB8519346D0 (en) 1985-08-01 1985-08-01 Step in safety ski-binding
GB8519346 1985-08-01
GB858520679A GB8520679D0 (en) 1985-08-19 1985-08-19 Safety ski-binding
GB8520679 1985-08-19
GB8528932 1985-11-25
GB858528932A GB8528932D0 (en) 1985-08-01 1985-11-25 Ski-binding
GB868601235A GB8601235D0 (en) 1985-08-01 1986-01-20 Ski binding
GB8601235 1986-01-20

Publications (2)

Publication Number Publication Date
EP0220393A1 true EP0220393A1 (de) 1987-05-06
EP0220393B1 EP0220393B1 (de) 1990-02-28

Family

ID=27449683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860110504 Expired EP0220393B1 (de) 1985-08-01 1986-07-30 Sicherheitsskibindung

Country Status (2)

Country Link
EP (1) EP0220393B1 (de)
DE (1) DE3669111D1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2212159A1 (de) * 1972-12-29 1974-07-26 Gertsch Ag
CH581481A5 (en) * 1973-11-09 1976-11-15 Gertsch Ag Zug Hydraulically operated safety ski release - has hydraulic piston on toe or heel catch for automatic freeing of ski boot
FR2414153A1 (fr) * 1978-01-07 1979-08-03 Stabilus Gmbh Amortisseur d'oscillations
FR2522514A1 (fr) * 1982-03-02 1983-09-09 Salomon & Fils F Fixation de ski avec assistance de declenchement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2212159A1 (de) * 1972-12-29 1974-07-26 Gertsch Ag
CH581481A5 (en) * 1973-11-09 1976-11-15 Gertsch Ag Zug Hydraulically operated safety ski release - has hydraulic piston on toe or heel catch for automatic freeing of ski boot
FR2414153A1 (fr) * 1978-01-07 1979-08-03 Stabilus Gmbh Amortisseur d'oscillations
FR2522514A1 (fr) * 1982-03-02 1983-09-09 Salomon & Fils F Fixation de ski avec assistance de declenchement

Also Published As

Publication number Publication date
EP0220393B1 (de) 1990-02-28
DE3669111D1 (de) 1990-04-05

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