US3572738A - Securing head for safety ski bindings - Google Patents

Securing head for safety ski bindings Download PDF

Info

Publication number
US3572738A
US3572738A US860614A US3572738DA US3572738A US 3572738 A US3572738 A US 3572738A US 860614 A US860614 A US 860614A US 3572738D A US3572738D A US 3572738DA US 3572738 A US3572738 A US 3572738A
Authority
US
United States
Prior art keywords
spring
ski
jaws
short
headpiece
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.)
Expired - Lifetime
Application number
US860614A
Other languages
English (en)
Inventor
Hans Martin
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3572738A publication Critical patent/US3572738A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0844—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable the body pivoting about a transverse axis
    • 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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0845—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable the body or base or a jaw pivoting about a vertical axis, i.e. side release
    • 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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0846—Details of the release or step-in mechanism
    • 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
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08507—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws
    • A63C9/08521—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a plurality of mobile jaws pivoting about a vertical axis, e.g. side release
    • 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
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08535—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw
    • A63C9/08542—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable with a mobile body or base or single jaw pivoting about a transversal axis
    • 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
    • A63C9/085—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with sole hold-downs, e.g. swingable
    • A63C9/08557—Details of the release mechanism
    • A63C9/08564—Details of the release mechanism using cam or slide surface
    • 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
    • A63C9/0805—Adjustment of the toe or heel holders; Indicators therefor

Definitions

  • a securing head for a safety ski binding that is capable for use as either a toe binding member or a heel binding member which includes two lever shaped jaws engageable with a ski boot and each tumable about an axis that is approximately vertical in relation to the ski and said jaws being urged to boot engaging position by at least one spring.
  • Both jaws being the long lever arms of double arm levers, the short arms of which are acted on by a spring through a stroke reducer or motion or displacement limiting member which functions to shorten the axial movement of the spring in relation to the displacement of or stroke of the short lever arms when a force is exerted tending to move the jaws to release position.
  • the present invention relates broadly to the art of ski bindings.
  • this invention relates to a securing head for a safety ski binding of the type which can be for cooperation with the toe and/or heel portions of a ski boot and which binding comprises two lever-shaped, spring biased jaws, engageable with a ski boot, and each tumable about an axis which is approximately vertical in relation to the ski.
  • Safety ski bindings are known in the prior art. They are all based essentially on the principle that the binding releases when a certain force is exceeded.
  • a spring loaded catch, latch, ball, pawl or the like is cooperable with a notch or socket. If the force acting upon the binding exceeds a certain value, then the catch, latch, ball, pawl or the like disengages from the notch or socket and the boot is released.
  • the length of the path of travel which the notch or socket makes until release occurs is very short, so that even very brief impacts can cause release of the binding under conditions in which a release of the binding would not be necessary. Attempts have been made to obviate this drawback by a correspondingly increased spring tensioning, but this reduces the safety factor of the binding.
  • springs act directly upon the holding jaws or clamps of the bindings. In normal position, these jaws are under a certain spring load or tension which increases linearly as the jaw moves out laterally, until the ski boot is released after the jaw has reached a certain position. Due to the limited space available for mounting bindings on the ski, one uses short, thick springs having relatively steep spring characteristics. As a result, the spring load or tension in normal position differs substantially from the spring load or tension during release of the binding. Thus, one has the choice of increasing the spring load for normal position which makes the release force very large and thus endangers the skier, or one adjusts the springs to accommodate a lower release force in which event the load or tension is too low in normal position. Thus, the jaws would yield in response to forces which are of less magnitude then would be required for the safety of the skier. This also is undesirable.
  • the jaw means In order to have a ski binding meet all requirements, it must be so constructed and arranged that the jaw means can be adjusted with sufficient spring load or tension in the normal position as would ensure firm seating of the binding, and at the same time the force required to effect release must not be essentially above the binding force or value in the normal position. Moreover, it is also necessary that a certain length of path he traveled between normal position and release position so that brief impacts, although greater than the spring pressure in normal position, thus causing the jaw means to yield, will not cause release of the binding so that the jaws can spring back into normal position.
  • jaw means in the form of two double arm levers each having a short lever arm and a long lever arm, with spring means acting directly on the short lever arms through the intermediary of a stroke reducer or motion or displacement limiting member for reducing the motion effective at the spring in contrast to the motion of the short lever arm.
  • the stroke reducer or motion or displacement limiting member is slidable relative to the end surface of one of the short lever arms and performs a lateral movement as it is shifted or retracted.
  • the stroke reducer is suitably a triangular shaped sliding member two of whose sides cooperate with the end surfaces of the short lever arms and whose third side or base serves as a support surface for a pressure spring.
  • the double arm lever is constructed as an angle lever whose short lever arm contacts in normal position a head piece in which an adjusting screw is supported for continuous adjustment of the tension of the pressure spring.
  • the use of an angle lever results in a particu larly compact construction of the securing head.
  • the adjusting screw passes through the sliding member and the pressure spring which is biased between one washer screwed upon the adjusting screw and another washer that bears against the base of the sliding member.
  • one of the two short lever arms has a' marginal protrusion whereby the short lever arms have different or unequal effective lengths.
  • the short lever arms are constructed in this fashion so that the forces tending to push the jaws outwardly to a release position is unequal as regards the two jaws in that a larger force is required to release one jaw than is required to release the other.
  • the short lever arm having the longer effective length is provided on the jaw engaging the ski boot on the inside of the foot, since a greater force is exerted when the foot turns inwardlyv
  • the sliding member is provided with a lever arm engaging nose having the shape ofa segment ofa circle.
  • arms of the double arm lever suitably form an approximate right angle.
  • FIG. I is a side elevational view of the securing head of this invention.
  • FIG. 2 is a view partly in top plan and partly in horizontal section and illustrating the component parts of the invention
  • FIG. 3 is a fragmentary view illustrating the operation of the slidable stroke reducer or motion or displacement limiting member of the invention
  • FIG. 4 is a fragmentary top plan view illustrating a slidable member of the invention having a lever arm engaging nose shaped as a segment of a circle;
  • FIG. 5 is a similar view illustrating an arrangement of the securing head of the invention in which one of the short lever arms of the jaws is provided with a marginal protrusion so that the short lever arms have different effective lengths.
  • reference numeral I denotes the base or securing plate of the securing head, the former being secured directly to ski la, for example by means of screws 2.
  • a head piece 6 as shown in FIG. I, by means of a hinge-joint 3 comprising a pin 4 and a hinge-joint eyelet 5.
  • Headpiece 6 can be slightly biased, if required, by means of a flat spring, now shown. If it is not required that the securing head be able to pivot or tilt, then headpiece 6 is mounted rigidly upon the ski.
  • Headpiece 6 is equipped with a bore 7 in which is accommodated an adjusting screw 8.
  • This screw 8 passes through a sliding member 9, and an axially movable spring washer l0 and has externally threaded portion II at its end upon which is screwed a second spring Washer 12.
  • a pressure spring I3 whose tension can be adjusted continuously by turning screw 8.
  • pressure spring 13 supports itself on spring washer l2 and exerts force via the longitudinally or axially movable spring washer upon sliding member 9.
  • the sliding member 9 has the shape of a triangular member whose sides 14, FIG. 3, contact inclined or slanted surfaces 15 of the short lever arms I6 of angle levers I7. Both long lever arms 18 of the angle levers 17 form at their free end jaws for holding the ski boot I9, denoted by a dotted line. Further, the free ends of the short lever arms are'forked so as to fit around the adjusting screw 8.
  • the headpiece 6 includes a projecting cover part 20 which serves as a protection for the interior parts.
  • the securing head operates as follows:
  • the sliding member 9 which is under a spring force pushes the short lever arms I6 to bear against the inside wall of headpiece 6 and thus hold jaws 18 in normal inward position. If now a lateral force acts upon ski boot l9, acting from top to bottom in the drawings, for example, then the lower jaw is pushed outwardly provided that the lateral force is greater than the counterforce being applied by virtue of the spring tension, FIG. 3. In moving outwards, the lower jaw rotates or pivots around a pin or bolt 22 which is secured in headpiece 6 and extends nearly vertical along axis 22a, FIG. I. As the short lever arm 16 turns, sliding member 9 is retracted, but during this phase, the latter simultaneously performs a lateral displacement.
  • sliding member 9 acts together with the sliding surfaces of the short lever arms 16 as stroke reducer or motion limiting member in that it yields laterally in addition to its axial movement. For this reason, the opening for the adjusting screw 8 in sliding member 9 must have the shape of a slot 23.
  • FIG. 3 will illustrate how the sliding member 9 is displaced laterally relative to spring washer 10.
  • the sliding member only diagrammatically illustrates, a member 24 having its nose in the shape of a segment of a circle. However, its function is the same as that of sliding member 9 in FIG. 3. With the choice of different shapes of sliding members, the stroke or motion characteristic of said sliding member and thus the characteristic of the spring force in dependency upon the travel of rotation of the jaw can be varied or influenced.
  • the securing head should be constructed to accommodate differential forces arising during the release of the ski binding. This can be achieved in the instant securing head by constructing the short lever arms of different lengths, in that, for example, in connection with the jaw on the inside of the foot, the short lever arm is made somewhat longer than the short lever arm of the jaw on the outside of the foot.
  • FIG. 5 illustrates how this problem is solved by providing a protrusion 26 on a short lever arm 25.
  • the triangular sliding member 27 is here suitably rounded off, somewhat at its nose or tip, where the protrusion 26 engages.
  • the protrusion 26 extends the effective length of lever arm 25, as a result of which a greater force must be exerted on the jaw for overcoming the force of the spring. Moreover, the lateral displacement of sliding member 27 begins with a certain delay.
  • This special construction of the short lever arm serves the purpose of permitting convenient adjustment of the spring to the conditions of skiing, as a function of the path of travel of the jaw.
  • the securing head according to the invention presents numerous possibilities, but with the stroke reduction of the spring being the essential feature. It is further advantageous in the instant securing head that when one jaw moves out laterally, the nonparticipating jaw does not become loose since it is continued to be acted upon by the force of the spring but that the latter remains loaded by the spring force.
  • the securing head pursuant to the invention can be used as a toe part as well as a heel part in a safety ski binding, with the toe part, for example, being raisable by means of a hinge-joint 3, as shown in FIG. I in order to facilitate easy stepping into the ski binding.
  • a securing head for a safety ski binding that is capable of use as a toe binding member or a heel binding member and including two lever-shaped jaws cngageable with a ski boot, means mounting each of said jaws for turning movement about an axis extending approximately vertical in relation to a ski and spaced transversely thereof, at least one spring cooperably related with said jaws to urge them to an inner ski boot engaging position, each jaw comprising a double arm lever having a long lever arm engageable with a ski boot and a short lever arm extending inwardly of and substantially perpendicular to said long arm, and said spring acting on said short lever arms, and a motion limiting member interposed between said spring and said short lever arms so as to reduce the axial movement of the spring in relation to the movement of the short lever arms.
  • a securing head as claimed in claim I in which said motion limiting member is a sliding member slidablc on the end surface of one of said short lever arms and performing a lateral movement when retracted.
  • a securing head as claimed in claim I in which one of said short lever arms has a short marginal protrusion.
  • a securing head as claimed inclaim 1. in which said motion limiting member is a slidable member having the shape of a segment of a circle.
  • a securing head for a safety ski binding comprising a base plate adapted to be secured to a ski, a headpiece carried by said baseplate and having a surface extending transversely of the axis of a ski, said headpiece further having a bore therethrough extending longitudinally of a ski, a pair of ski boot engaging jaws.
  • each jaw comprising a double arm lever having a long lever arm and a short lever arm, means pivoting each said double arm levers relative to said baseplate for turning movement about axes extending approximately vertically and aligned transversely of the ski, located in spaced relation to said surface of said headpiece with said long lever anns constituting ski boot engaging arms and said short lever arms ex tending toward one another and in ski boot engaging position bearing against said surface of said headpiece.
  • an adjusting screw passing through said bore in said headpiece and having an externally threaded end portion, a first washer means in threaded engagement with said externally threaded end portion, a second washer means surrounding said adjusting screw and longitudinally movable therealong.
  • a spring surrounding said adjusting screw and disposed between said washer means, and a displacement limiting member loosely surrounding said adjusting screw, slidably related to said second washer means and including surfaces bearing against said short arms of said double arm levers to hold them against said surface of said headpiece in normal ski binding position of said jaws and to allow lateral shifting of said member as a long arm of a double arm lever is displaced laterally outwards due to lateral forces acting on the binding during skiing.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US860614A 1968-10-04 1969-09-24 Securing head for safety ski bindings Expired - Lifetime US3572738A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1482568A CH486894A (de) 1968-10-04 1968-10-04 Haltekopf für Sicherheits-Skibindung

Publications (1)

Publication Number Publication Date
US3572738A true US3572738A (en) 1971-03-30

Family

ID=4404117

Family Applications (1)

Application Number Title Priority Date Filing Date
US860614A Expired - Lifetime US3572738A (en) 1968-10-04 1969-09-24 Securing head for safety ski bindings

Country Status (6)

Country Link
US (1) US3572738A (enrdf_load_stackoverflow)
JP (1) JPS495302B1 (enrdf_load_stackoverflow)
AT (1) AT305838B (enrdf_load_stackoverflow)
CH (1) CH486894A (enrdf_load_stackoverflow)
DE (1) DE1946461B2 (enrdf_load_stackoverflow)
FR (1) FR2019891A1 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638959A (en) * 1969-09-05 1972-02-01 Henri Reuge Toe stop member for ski safety bindings
US3647233A (en) * 1969-05-09 1972-03-07 Hans Martin Safety ski binding
US3727933A (en) * 1970-09-21 1973-04-17 Jon I Allsop Ski binding
US3881737A (en) * 1972-07-03 1975-05-06 Mitchell Sa Ski binding
US3897958A (en) * 1972-06-29 1975-08-05 Mitchell Sa Ski binding
US3902730A (en) * 1972-12-18 1975-09-02 Gertsh Ag Ski binding part
US4979762A (en) * 1988-01-05 1990-12-25 Salomon S.A. Ski boot safety binding
US5040821A (en) * 1987-12-09 1991-08-20 Salomon, S.A. Safety binding for a ski

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2209055C3 (de) * 1972-02-25 1984-04-19 Marker, Hannes, 8100 Garmisch-Partenkirchen Vorderbacken für Sicherheits-Skibindungen
AT315698B (de) * 1972-04-06 1974-06-10 Smolka & Co Wiener Metall Vorderbacken für Skibindungen
DE2244949C2 (de) * 1972-09-13 1982-07-01 Hannes 8100 Garmisch-Partenkirchen Marker Sicherheits-Skibindung mit einer elektronischen Schaltung
AT340290B (de) * 1973-09-26 1977-12-12 Smolka & Co Wiener Metall Vorderbacken fur sicherheitsskibindungen
DE2356908C3 (de) * 1973-11-14 1982-08-12 Geze Gmbh, 7250 Leonberg Haltekopf für eine Sicherheitsbindung
DE2454577C3 (de) * 1974-11-18 1982-08-26 Geze Gmbh, 7250 Leonberg Sicherheitsskibindung
AT339189B (de) * 1975-12-12 1977-10-10 Smolka & Co Wiener Metall Vorderbacken

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3194574A (en) * 1962-06-01 1965-07-13 Beyl Jean Joseph Alfred Safety ski binder
US3232631A (en) * 1962-11-06 1966-02-01 Pierre A Habegger Safety attachment device for skis
DE1269553B (de) * 1957-12-12 1968-05-30 Richard Erlebach Sohlen- bzw. Absatzkantenhalter fuer Ausloese-Skibindungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1269553B (de) * 1957-12-12 1968-05-30 Richard Erlebach Sohlen- bzw. Absatzkantenhalter fuer Ausloese-Skibindungen
US3194574A (en) * 1962-06-01 1965-07-13 Beyl Jean Joseph Alfred Safety ski binder
US3232631A (en) * 1962-11-06 1966-02-01 Pierre A Habegger Safety attachment device for skis

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647233A (en) * 1969-05-09 1972-03-07 Hans Martin Safety ski binding
US3638959A (en) * 1969-09-05 1972-02-01 Henri Reuge Toe stop member for ski safety bindings
US3727933A (en) * 1970-09-21 1973-04-17 Jon I Allsop Ski binding
US3897958A (en) * 1972-06-29 1975-08-05 Mitchell Sa Ski binding
US3881737A (en) * 1972-07-03 1975-05-06 Mitchell Sa Ski binding
US3902730A (en) * 1972-12-18 1975-09-02 Gertsh Ag Ski binding part
US5040821A (en) * 1987-12-09 1991-08-20 Salomon, S.A. Safety binding for a ski
US4979762A (en) * 1988-01-05 1990-12-25 Salomon S.A. Ski boot safety binding

Also Published As

Publication number Publication date
FR2019891A1 (enrdf_load_stackoverflow) 1970-07-10
JPS495302B1 (enrdf_load_stackoverflow) 1974-02-06
AT305838B (de) 1973-03-12
DE1946461A1 (de) 1971-02-25
DE1946461B2 (de) 1976-05-06
CH486894A (de) 1970-03-15

Similar Documents

Publication Publication Date Title
US3572738A (en) Securing head for safety ski bindings
US3249365A (en) Safety bindings for releasably locking the heels of ski boots
US3610650A (en) Ski boot holding clamp
US3291500A (en) Heel-holding device for ski safety binding
US3578349A (en) Safety ski binding
US4182524A (en) Safety ski binding
US3810644A (en) Ski binding
US3278195A (en) Safety ski binding
US4066276A (en) Ski brake
GB934140A (en) Safety ski binding
US4365822A (en) Front or rear jaw
US4219217A (en) Releasable toe holder for ski binding
US3797843A (en) Device for securing a boot to a base
US3899185A (en) Ski brake mechanism
US3632123A (en) Safety front holding member for ski boot
US5265901A (en) Heel unit for ski bindings with automatic reset means
US3909026A (en) Releasable safety device for a ski boot
US3950002A (en) Front jaws for ski bindings
US4795185A (en) Heel piece for safety ski binding
US4035001A (en) Heel tightener for safety ski-bindings
US3794336A (en) Ski binding with ski brake
US3594014A (en) Safety ski binding
US3545782A (en) Clamping device for safety ski harness
US3727935A (en) Releasable heel reatiner
US4340242A (en) Safety ski binding