US3685849A - Toe iron for safety ski bindings - Google Patents

Toe iron for safety ski bindings Download PDF

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Publication number
US3685849A
US3685849A US72717A US3685849DA US3685849A US 3685849 A US3685849 A US 3685849A US 72717 A US72717 A US 72717A US 3685849D A US3685849D A US 3685849DA US 3685849 A US3685849 A US 3685849A
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US
United States
Prior art keywords
soleholder
toe iron
levers
spring
baseplate
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
US72717A
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English (en)
Inventor
Hannes Marker
Roland Jungkind
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Marker International Co
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Individual
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Publication of US3685849A publication Critical patent/US3685849A/en
Assigned to MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., A SWISS CORP. reassignment MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., A SWISS CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MARKER, HANNES
Assigned to MARKER INTERNATIONAL COMPANY reassignment MARKER INTERNATIONAL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A63C9/085—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
    • A63C9/08571—Details of the release mechanism using axis and lever
    • 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
    • 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
    • A63C9/0855—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 vertical 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

Definitions

  • ABSTRACT A soleholder constitutes the coupling member of a four-bar linkage, which comprises levers pivoted to a baseplate and which is held in its normal position by a spring.
  • the baseplate is provided with fixed abutments, which in the normal position of the toe iron are engaged by the levers at those ends thereof which do not carry the soleholder.
  • Each abutment has a concave abutting surface, which at its mutually opposite sides adjoins a recess, which is capable after a springopposed movement of the soleholder to receive that lever which leads in the direction of movement so that so the soleholder can be pivotally moved to its open position without an effort.
  • the present invention relates to a toe iron for safety ski bindings, which toe iron comprises a soleholder which constitutes the coupling member of a four-bar linkage, which comprises levers pivoted to a baseplate and which is held in its normal position by a spring.
  • Such toe iron is already disclosed in a prior applica tion and compared to other known four-bar linkage toe irons in which the soleholder member is locked relative to the baseplate has the important advantage of being insensitive to shock. On the other hand, it is relative complicated and involves a large structural expenditure. That expenditure is undesirable not only because it results in high manufacturing costs of the toe iron but also because it renders the toe iron more liable to be deranged.
  • toe iron for safety ski bindings, which toe iron comprises a soleholder which constitutes the coupling member of a four-bar linkage, which comprises levers pivoted to a baseplate and which is held in its normal position by a spring
  • the baseplate is provided with fixed abutrnents, which in the normal position of the toe iron are engaged by the levers at those ends thereof which do not carry the soleholder, and that each abutment has a concave abutting surface, which at its mutually opposite sides adjoins a recess, which is capable after a spring-opposed movement of the soleholder to receive that lever which leads in the direction of movement so that the soleholder can be pivotally moved to its open position without an effort.
  • each lever at its engaging end with at least one freely rotatable backing roller so that the frictional resistance of the four-bar linkage during the pivotal movement is reduced.
  • a structurally simple mounting of the four-bar linkage may be accomplished if the axles of the backing rollers constitute pivots of the four-bar linkage. That surface of the recess which adjoins the abutting surface constitutes suitably a guideway for the abutting end of the lever. As a result, the levers will always perform the same movements also during a pivotal movement performed without an effort and a predetermined end position of the soleholder will be ensured.
  • the levers of the four-bar linkage may be two-armed levers and may be so arranged that during a spring-opposed movement of the soleholder they are only rotatably held on the baseplate by means of those pivots which do not carry the soleholder.
  • the levers are preferably provided with a slot and a pivot pin which is rigid with the baseplate extends through each of said slots and constitutes a pivot of the four-bar linkage.
  • a pivot pin which constitutes a pivot of the four-bar linkage and is positively guided in a groove of the baseplate may be rigidly secured to each lever.
  • the spring may be disposed between a member of the four-bar linkage which is rigid with the baseplate and at least one movable member of the four-bar linkage. Because the spring is additionally subjected to bending or buckling stresses, in such an arrangement, it has proved desirable to provide the spring between two relatively movable members of the four-bar linkage. In that case it is desirable to arrange the spring to act at one end on the soleholder and at the other hand by means of connecting levers on the levers of the four-bar linkage.
  • FIG. 1 is a top plan view showing a first embodiment of the toe iron, partly cut open to facilitate the understanding of the mechanism.
  • FIG. 2 is a top plan view showing the toe iron of FIG. 1 with the soleholder in an instantaneous position immediately before the release.
  • FIG. 3 is a top plan view showing the toe iron according to FIG. 1 with the soleholder in its release position.
  • FIG. 4 is a top plan view showing a second embodiment of the toe iron also partly cut open to facilitate the understanding of the mechanism.
  • FIG. 5 is a top plan view showing the toe iron of FIG. 4 with the soleholder in an instantaneous position immediately before the release.
  • FIG. 6 is a top plan view showing the toe iron of FIG. 4 with the soleholder in its release position.
  • the toe iron shown in FIGS. 1 to 3 comprises a soleholder member 1, which constitutes the coupling member of a four-bar linkage and to which the soleholder proper 2 is secured with screws 3.
  • the soleholder member 1 is pivoted by two pivot pins 4 and 5 to the levers 6 and 7 of the four-bar linkage. These levers carry freely rotatable backing rollers 8 and 9 at their other ends.
  • the axles 10 and 11 of said rollers constitute pivots of the four-bar linkage.
  • the four-bar linkage bears by means of the backing rollers 8, 9 on an abutment block 12, which constitutes a unit with a baseplate 13.
  • the latter is adapted to be secured to the ski, e.g., by means of screws, and for this purpose is provided with screw holes 14.
  • That side of the abutment block 12 which faces the soleholder 2 has an approximately W-shaped recess.
  • the free legs of the W are offset and are formed each with a concave abutting surface 15 or 16, which is normally engaged by the backing rollers 8, 9 of the toe iron.
  • a closing bar 17 connected by screws 18 to the abutment block 12 closes the W-shaped recess and prevents a sliding of the backing rollers 8, 9 out of the recess.
  • each roller has a collar 19, which extends into a groove 20, which is formed in the abutment block 12 and in the closing bar 17 and in constant depth in the peripheral surface of the recess.
  • a connecting lever 21 is pivoted to the pivot pin 4 which connects the soleholder member 1 to the lever arm 6. From its normal position, the connecting lever 21 can perform a pivotal movement relative to the lever 6 only in one direction.
  • Another connecting lever 22 is mounted on the pivot pin 5 and non-rotatably held relative to the lever 7.
  • the connecting levers 21, 22 are so arranged that their free ends overlap and in the normal position of the toe iron said free ends contact each other at a point which is disposed on the longitudinal center line of the toe iron.
  • a U-shaped sheet metal member 23 has a leg which is secured between the soleholder member 1 and the soleholder 2 and its other leg carries a pin 24 formed with a transverse bore. To facilitate the understanding of the mechanism, part of the web portion of the sheet metal member 23 is shown broken away in the drawings.
  • a helical tension spring 25 is stressed between the pin 24 and the free end of the connecting lever 21. The ends of said spring are reversely bent in the shape of hooks and extend in the transverse bore of the pin 24 and in a bore of the connecting lever 21, respectively.
  • the four-bar linkage is held in its normal position shown in FIG. 1 by that spring and can be moved out of said normal position only against spring force, as is shown, e.g., in FIG. 2.
  • the soleholder 2 is subjected to the action of a force in a direction which is transverse to the longitudinal direction of the ski, e.g., a force directed to the right in FIGS. 1-3, and said force overcomes the spring force, the levers 6, 7 will swing about the pivots land 1 1 and will move the soleholder 2 along an are having a center of curvature which at least approximately coincides with the axis of rotation of the skiing boot on the ski.
  • the stress of the helical compression spring 25 is increased.
  • the spring 25 acting by means'of the connecting lever 21 pulls the lever 6 to its normal position so that the soleholder 2 and the skiing boot also return to their initial position.
  • the four-bar linkage will initially perform the movement described hereinbefore until it reaches the position shown in FIG. 2.
  • the backing roller 8 will spring out of its concave abutting surface and under the action of the stressed tension spring 25 will roll along the guideway 26 formed by the corresponding leg of the W- shaped recess until the roller reaches'a stop (see FIG. 3).
  • the soleholder performs a pivotal movement to the position shown in FIG. 3 and suddenly releases the skiing boot.
  • the four-bar linkage may automatically return to its normal position under the action of the tension spring 25 if the toe iron is designed accordingly.
  • the connecting lever 22 exerts pressure on the connecting lever 21 so that the latter performs a pivotal movement relative to the lever 6 and stresses the helical tension spring 25.
  • the toe iron has the same function as during the action of a force in the opposite direction.
  • FIGS. 4-6 show another embodiment of a toe iron according to the invention.
  • the toe iron comprises a baseplate 30, which is adapted to be secured to the ski by means which are not shown because they are not significant for the invention, e.g., by screws.
  • the baseplate 30 carries two vertical pins 31 and 32, which constitute pivots of a four-bar linkage.
  • the four-bar linkage comprises two-armed levers 33 and 34, each of which has a slot 35 or 36 receiving the pin 31 or 32.
  • Thecoupling member of the four-bar mechanism consists of a channel-shaped sheet metal stamping 37.
  • Two pivot pins 38, 39 extend between the legs of the stamping 37 and pivotally connect the coupling member 37 i serves also as a soleholder member and carries the soleholder proper 40, which is secured by screws 41.
  • the free arms of the levers33 and 34 of the four-bar. mechanism bear by means of freely rotatable backing rollers '42 and 43 on an abutment block 45, which constitutes a unit-with the baseplate 44.
  • the pins 31, 32 engage those ends of the slots 35 and 36 which are nearer to the backing rollers 42, 43.
  • the abutment block 45 is formed with two concave abutting surfaces 46 and 47, which are formed in accordance with an arc of a circle and engageable by the backing rollers 42, 43. The centers of curvature of the surfaces 46 and 47 coincide with the axes of the pins 31, 32 which are rigid with the baseplate.
  • the abutment block 45 is provided with another arcuate recess 48 between the abutting surfaces 46 and 47.
  • each of the pivot pin 38, 39 of the soleholder member 37 mounts a connecting lever 49 or 50, which is capable of a limited pivotal movement relative to the associated lever 33 or 34.
  • a rotation of the connecting levers 49, 50 from the normal position to one side is provided by'a nose which is formed on the connecting lever and'adapted to engage a wall of a recess in the associated lever 33 or 34. That recess partly receives the connecting lever.
  • the free ends of the connecting levers 49, 50 extend close to the longitudinal center line of the toe iron and each of said free ends is provided with an extension 51 forrnedwith a knife edge. In the normal position of the toe iron shown in FIG. 1, each knife edge is positively held in a vertical notch.
  • notches are formed in an end face of a pin 52, which has a collar 53 forming an abutment for a preferably prestressed helical compression spring 54.
  • the other end of said spring bears on a bent-up lug 55 of the upper leg of the channel-shaped soleholder member 37. That upper leg constitutes a cover cap.
  • a guide sleeve 56 is secured to the lug 55 and has an outside surface which guides the spring.
  • the pin 52 is axially slidable in the sleeve 56.
  • the central portion of the upper leg of the soleholder member is partly punched so that the spring mechanism may be disposed on a relatively low level.
  • the four-bar linkage can be moved out of that normal position only against the force of the spring. If the skiing boot exerts on the soleholder 40 a force in a direction which is transverse to the longitudinal direction of the ski, e.g., a force directed to the right in FIGS. 4-6, and said force exceeds the initial stress of the spring 54, the levers 33, 34 will rotate about the pins 31 and 32 and the backing rollers 42 and 43 will roll on the abutting surfaces 46 and 47 and prevent the levers 33, 34 from performing a translatory movement owing to the slots 35, 36 in these levers.
  • a force in a direction which is transverse to the longitudinal direction of the ski e.g., a force directed to the right in FIGS. 4-6
  • said force exceeds the initial stress of the spring 54
  • the soleholder 40 moves also on an arc of a circle which has a center of curvature that coincides at least approximately with the axis of rotation of the skiing boot on the ski.
  • the knife edge 51 of the connecting lever 49 acts on the pin 52 to compress the spring 54.
  • the compressive force of the spring 54 will return the fourbar linkage to its initial position.
  • the four-bar linkage will initially move to its limiting position shown in FIG. 5, as has just been described. In that limiting position, the backing roller 43 is about to disengage the abutting surface 47. Upon a continued movement of the soleholder 40, the backing roller 43 disengages its abutting surface and the slot 36 now permits of a displacement of the lever 34 on the pin 32 until the latter engages the other end of the slot. At this time, the four-bar linkage always collapses under no effort, the soleholder 40 performs a pivotal movement to its open position, and the skiing boot is suddenly released. When the skiing boot has been released, the four-bar linkage can be moved back to its normal position by hand without a considerable effort.
  • a toe iron for safety ski bindings which toe iron comprises: a four-bar linkage and a soleholder constituting a coupling member for said linkage, a baseplate, a pair of levers forming a portion of said linkage and movably mounted with respect to said baseplate, and a spring operatively connected between said coupling member and a predetemiined portion of said linkage to hold said linkage in a predetermined normal position, characterized in that the baseplate (13) includes fixed abutments (l2) symmetrically positioned on either side of a longitudinal center line of said baseplate, and said levers (6,7) each having one end pivotally connected to said coupling member, each of said fixed abutments having a recess and a concave abutting surface (15,16), each said surface adjoining a respective one of said recesses (26) positioned inwardly thereof, at least one freely rotatable backing roller (8,9) provided at the other end of each said lever and abuttingly engaging said concave
  • a toe iron according to claim 1 further including axles (10) of the backing rollers, said axles acting as pivots of the four-bar linkage.
  • a toe iron according to claim 1 characterized in that that surface of the recess (26) which adjoins the abutting surface (15,16) includes a guideway (26) for th 'd other end of th lever 6 r7 :fi
  • a toe iron according to :lai m characterized in that the spring is disposed between two relatively movable parts of the four-bar linkage.
  • a toe iron according to claim 4 further including connecting levers (21,22) pivotally mounted with respect to the soleholder and wherein the spring (25) acts at one end on the soleholder (U2) and acts at the other end by means of said connecting levers (21,22) on the levers 6,7) of the four-bar linkage.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US72717A 1969-09-29 1970-09-16 Toe iron for safety ski bindings Expired - Lifetime US3685849A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691949123 DE1949123A1 (de) 1969-09-29 1969-09-29 Vorderbacken fuer Sicherheits-Skibindungen

Publications (1)

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US3685849A true US3685849A (en) 1972-08-22

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US72717A Expired - Lifetime US3685849A (en) 1969-09-29 1970-09-16 Toe iron for safety ski bindings

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US (1) US3685849A (it)
JP (1) JPS5016977B1 (it)
AT (1) AT304328B (it)
CH (1) CH521139A (it)
DE (1) DE1949123A1 (it)
FR (1) FR2062757A5 (it)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787070A (en) * 1971-02-16 1974-01-22 Salomon Georges P J Ski binding with lateral release
US3910592A (en) * 1972-11-08 1975-10-07 Ver Baubeschlag Gretsch Co Front support mechanism for safety ski binding
US3951424A (en) * 1974-07-02 1976-04-20 Hans Napflin Safety ski binding
US4061358A (en) * 1975-10-31 1977-12-06 Hope Co. Ltd. Ski boot toe binding
US4087114A (en) * 1975-12-23 1978-05-02 Vereinigte Baubeschlagfabriken Gretsch & Co. Gmbh Toe iron
US4735434A (en) * 1985-05-02 1988-04-05 Marker-Deutschland Gmbh Toe piece for a safety ski-binding
US20130207356A1 (en) * 2012-02-07 2013-08-15 Fritz Barthel Front unit for a sliding board binding, touring binding and ski-jumping binding

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59144456U (ja) * 1982-01-12 1984-09-27 有限会社　コイデ 降雪検知器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125349A (en) * 1960-10-20 1964-03-17 Schweizer
US3232631A (en) * 1962-11-06 1966-02-01 Pierre A Habegger Safety attachment device for skis
US3366394A (en) * 1965-08-17 1968-01-30 Ever New Inc Ski boot heel binding device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125349A (en) * 1960-10-20 1964-03-17 Schweizer
US3232631A (en) * 1962-11-06 1966-02-01 Pierre A Habegger Safety attachment device for skis
US3366394A (en) * 1965-08-17 1968-01-30 Ever New Inc Ski boot heel binding device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3787070A (en) * 1971-02-16 1974-01-22 Salomon Georges P J Ski binding with lateral release
US3910592A (en) * 1972-11-08 1975-10-07 Ver Baubeschlag Gretsch Co Front support mechanism for safety ski binding
US3951424A (en) * 1974-07-02 1976-04-20 Hans Napflin Safety ski binding
US4061358A (en) * 1975-10-31 1977-12-06 Hope Co. Ltd. Ski boot toe binding
US4087114A (en) * 1975-12-23 1978-05-02 Vereinigte Baubeschlagfabriken Gretsch & Co. Gmbh Toe iron
US4735434A (en) * 1985-05-02 1988-04-05 Marker-Deutschland Gmbh Toe piece for a safety ski-binding
US20130207356A1 (en) * 2012-02-07 2013-08-15 Fritz Barthel Front unit for a sliding board binding, touring binding and ski-jumping binding

Also Published As

Publication number Publication date
DE1949123A1 (de) 1971-04-01
FR2062757A5 (it) 1971-06-25
AT304328B (de) 1972-12-27
JPS5016977B1 (it) 1975-06-17
CH521139A (de) 1972-04-15

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AS Assignment

Owner name: MARKER-PATENTVERWERTUNGSGESELLSCHAFT MBH., BAAR, S

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MARKER, HANNES;REEL/FRAME:004089/0014

Effective date: 19820804

AS Assignment

Owner name: MARKER INTERNATIONAL COMPANY,UTAH

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH;REEL/FRAME:004906/0245

Effective date: 19880331

Owner name: MARKER INTERNATIONAL COMPANY, P.O. BOX 26548, SALT

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MARKER-PATENTVERWERTUNGSGELLSCHAFT GMBH;REEL/FRAME:004906/0245

Effective date: 19880331