US3795407A - Heel-holding device for safety ski bindings - Google Patents

Heel-holding device for safety ski bindings Download PDF

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Publication number
US3795407A
US3795407A US00260805A US3795407DA US3795407A US 3795407 A US3795407 A US 3795407A US 00260805 A US00260805 A US 00260805A US 3795407D A US3795407D A US 3795407DA US 3795407 A US3795407 A US 3795407A
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US
United States
Prior art keywords
heel
aperture
holding device
shafts
rotatable
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
US00260805A
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English (en)
Inventor
Y Nagasaki
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki Co Ltd
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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Application granted granted Critical
Publication of US3795407A publication Critical patent/US3795407A/en
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    • 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
    • A63C9/0846—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
    • A63C9/084—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable
    • A63C9/0847—Details of the manual 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
    • A63C9/0805—Adjustment of the toe or heel holders; Indicators therefor

Definitions

  • a heel-holding device for a safety ski binding comprises a rotatable member provided with a pedal and a heel clamping projection and having an aperture.
  • a pair of stationary shafts each having a roller therearound are extended into the aperture with the rollers in contact with the aperture wall.
  • the aperture has a pair of deeply concaved walls and other walls contigu' ous thereto and so shaped as to allow the rotatable member to rotate about both of the shafts respectively.
  • a constantly acting force is exerted against the rotatable member to hold it in any rotated position.
  • one of the shafts In a boot-clamped state, one of the shafts is engaged into one of the deeply concaved walls, and when a force exceeding the above-mentioned force is applied to release the boot, the rotatable member is rotated about said one of the shafts and then further rotated about the other of the shafts, so that the heel clamping projection is raised apart from the heel.
  • Thepresent invention relates to a heel-holding device for a safety ski binding of the type in which a bootengaging clamp can be easily locked only by a step-in motion ofa skier.
  • the invention relates to a heel-holding device for a safety ski binding having a simple and dependable construction combining a novel escapement mechanism, in which the boot of a skier can be released without fail in response to an abnormal stress in the event of a fall of a skier.
  • An object of the present invention is topropose a novel heel-holding device for a safety ski binding in which the boot-clamping operation can be carried out easily only by a step-in motion of the skier.
  • Another object of the invention is to propose a heelholding device in which the construction thereof is simple and durable, while the performance thereof is quick and dependable.
  • Further object of the invention is to propose a heelholding device in which the boot of a skier can be re leased without fail in response to an abnormal stress thereto in the event of a fall of the skier.
  • the heel-holding device for safety ski binding of the invention comprises: supporting means fixed on a ski; rotatable means provided with a pedal and a heel clamping member, either of the supporting and rotatable means having at least one aperture, the otherof said means having a pair of shafts passing through the aperture, the aperture having a pair of deeply concaved walls and being so'shaped as to allow the rotatable means to rotate about both of the shafts respectively, the pair of shafts being engageable with the pair of deeply concaved walls respectively; and means for holding the rotatable means in any rotated position.
  • FIG. I is a schematic partly sectional and fragmentary elevation of a heel-holding device for safety ski binding according to the invention in the normal state of the device clamping a ski boot;
  • FIGS. 2 and 3 are schematic partly sectional elevation of the device as shown in FIG. 1 in which the relation of the parts when the ski boot is disengaged by a release lever are shown;
  • FIG. 4 is a schematic back view of the device as shown in FIG. 1.
  • a support member I fixed on a ski body S has a pair of spaced and parallel-extended upright plates 2, 2 as is clearly shown in FIG. 4.
  • a pair of stationary shafts 3 and 4 having, respectively, rollers 3a and 4a therearound is bridged between the plates 2, 2.
  • a rotatable member generally indicated by reference numeral 5' is rotatably supported about the stationary shafts 3 and 4.
  • the rotatable member 5 has an aperture 6 which is defined by three symmetrically arranged deeply concaved walls 6a, 6a and 6a and by three other walls 6b, 6b and 6b each contiguous to the adjacent deeply concaved walls and forming an arc of a circle having a center at the opposite deeply concaved wall 6a, or more precisely at the shaft 3 or 4 engaged in said wall 6a.
  • the shafts 3 and 4 are extended into the aperture 6, so that the rollers 3a and 4a of the shafts 3 and 4 are in contact with the aperture walls.
  • the rollers 3a and 4a are engageable into two of the deeply concaved walls 60, 6a and 6a.
  • the rotatable member 5 can be rotated about both of the shafts 3 and 4 respectively.
  • the rotatable member 5 is provided with a pedal 7 at its lower portion and with a heel clamping projection 8 at its upper portion.
  • the pedal 7 is pivotally supported by the rotatable member 5, and the depression of the pedal causes the rotation of the member 5.
  • a ski shoe or boot A can be held between the pedal 7 and the heel clamping projection 8.
  • the heel clamping projection 8 is fixed to the rotatable member 5 in such a manner that the fixing position of the projection 8 is adjust able according to the thickness of the shoe or boot A. That is, the rotatable member 5 has a surface 5a corrugaged with the same pitch, which mates with the corresponding surface 8a of the projection 8 similarly corrugated with the same pitch.
  • the corrugated surface 5a of the member 5 is made longer than that of the projection 8 so that the projection 8 can change its position relative to the member 5.
  • the projection is fixed to the member 5 by means such as a screw 9.
  • the rotatable member 5 has an upward projection I0 integrally formed therewith and extended therefrom.
  • the upward projection 10 is bored to form a housing 11 which communicates with the aperture 6.
  • a ball 12 Into the housing are inserted first a ball 12 and then a coiled spring I3 having a piston-like member I4 at its tip end, in such a manner that the piston-like member 14 presses against the ball 12.
  • Entrance of the housing 11 is closed by an adjusting screw 15 the external thread of which engages with internal threads formed on the inside of the bore or housing II.
  • the coiled spring 13 is thus interposed between the adjusting screw 15 and the ball I2 in a compressed state, giving a biasing force to the ball 12.
  • the ball 12 is rested on a bridge 16 connecting the stationary shafts 3 and 4, so that the biasing force is transmitted in turn to the bridge 16.
  • the biasing force of the coiled spring I3 serves to hold the rotatable member 5 in any rotated position.
  • the biasing force constantly acting on the bridge I6 may be adjusted by turning the adjustable screw I5.
  • a heel releasing lever 17 On the stationary shaft 3 is pivoted a heel releasing lever 17 which is rotatable about the shaft 3 and which is interlockable with a pin 18 projecting from both sides of the rotatable member in a crossing direction with respect to the lever 17.
  • FIG. 1 shows the heel of the shoe or boot A rigidly held by the heel-holding device of the invention.
  • the upward projection is somewhat tilted forward and the heel clamping projection 8 is pressing the heel downward to clamp it between the projection 8 and the pedal 7.
  • the roller 4a of the stationary shaft 4 is at this time engaged snugly into one of the deeply concaved walls 6a, 6a, and 6a, with the roller 3a of the other shaft 3 in contact with the wall 6b located opposite to said one of the deeply concaved walls.
  • the heel releasing lever 17 is manipulated.
  • the lever 17 is turned to the rearward (to the direction indicated by the arrow in FIG. 2) about the shaft 3, the pin 18 is depressed downward and the rotatable member 5 is forced to rotate about the shaft 4 against the biasing force of the coiled spring 13, until the shaft 3 is fitted into another of the deeply concaved walls 6a, 6a, and 6a as shown in FIG. 2.
  • the shafts 3 and 4 are engaged into the two of the deeply concaved walls 6a, 6a and 60, respectively.
  • the heel clamping projection 8 is raised upward as indicated by an arrow in FIG. 2, releasing the heel clamping power thereof.
  • the rotatable member 5 is rotated from the state indicated in FIG. 2 to the one in FIG. 3. That is to say, the rotatable member 5 is rotated about the shaft 3, and the contacting point of the member 5 with the shaft 4 is shifted from the wall 6a to the other wall 617 as shown in FIG. 3. With this movement of the rotatable member 5, the heel clamping projection 8 is further raised, making easier the disengagement of the heel from the clamping device.
  • the clamping operation starts from the state shown in FIG. 3.
  • the rotatable member 5 is turned forwardly without requiring a operation of the lever 17, in which case the member 5 is first rotated about the shaft 3 until the other shaft 4 is engaged into the deeply concaved wall 6a as shown in FIG. 2, and thereafter the member 5 is further rotated about the shaft 4, with the contacting point of the member 5 with the shaft 3 shifted from the deeply concaved wall 60 to the wall 6b contiguous thereto as shown in FIG. 1.
  • the spring 13 is exerting a force between the member 5 and the bridge 16, and the heel holding state is retained.
  • the rollers 3a and 4a are effective for decreasing the frictional resistance caused when the rotatable member 5 is rotated, resulting to actuate to release or to lock smoothly.
  • the heel holding power of the device of the invention is easily released, especially when a sudden shock or force exceeding the biasing force of the spring 13 is given to the heel clamping projection 8 to tend to rotate the member 5.
  • the mechanism of the heel-holding device of the present invention is such that, in the usual releasing of the boots, it is only necessary to turn the releasing lever backward, and when the boot is to be engaged with the device, only the stepping in motion of the boot into the device is sufficient.
  • the device of the present invention is very simple and easy to handle.
  • the safety mechanism of the heel-holding device of the present invention is such that when the force in excess of the biasing force of the spring 13 is exerted on the heel clamping projection 8 the locking relation between the two parallel shafts and the rotatable member 5 is changed.
  • the safety device acts instantly and without fail, and the heel of the ski boot is easily released from the ski; therefore the risks such as the sprain and fracture of the ankle can be minimised.
  • a heel-holding device for a safety ski binding comprising supporting means fixed on a ski; a rotatable means provided with a heel clamping member and pivotally mounted with respect to said supporting means, either of said supporting and rotatable means having at least one aperture, the other of said supporting and rotatable means having a pair of shafts passing through the aperture and extending transversely with respect to the longitudinal axis of the ski, said aperture being defined by at least a pair of deeply concaved walls and so shaped as to allow the rotatable means to rotate about both of the shafts respectively, said pair of shafts being engageable with the pair of deeply concaved walls respectively, said aperture being further defined by at least a pair of other concave walls each contiguous to the adjacent one of said deeply concaved walls and each forming an arc of a circle having a center at the shaft engaged with the other of said deeply concaved walls, and means for holding the rotatable means in any rotated position; a first shaft of said shafts being
  • a heel-holding device for a safety ski binding as claimed in claim 1 further comprising a lever pivoted on one of said shafts, and a member provided on the rotatable means in an interlocking relation with the lever so that the rotatable means can be rotated with said lever.
  • a heel-holding device for a safety-ski binding as claimed in claim 1 wherein said shafts are fixed to said supporting means and said aperture is formed in said rotatable member.
  • a heel-holding device for a safety ski binding as claimed in claim ll wherein said aperture is formed in said supporting means and said shafts are fixed to said rotatable member.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US00260805A 1971-07-21 1972-06-08 Heel-holding device for safety ski bindings Expired - Lifetime US3795407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46054470A JPS511178B1 (en。) 1971-07-21 1971-07-21

Publications (1)

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US3795407A true US3795407A (en) 1974-03-05

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US00260805A Expired - Lifetime US3795407A (en) 1971-07-21 1972-06-08 Heel-holding device for safety ski bindings

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JP (1) JPS511178B1 (en。)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873110A (en) * 1972-11-29 1975-03-25 Rene Ramillon Heel holddown for ski binding
US4088344A (en) * 1975-12-24 1978-05-09 Andreas Hausleithner Ski boot heel release binding for skis

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288476A (en) * 1963-06-07 1966-11-29 Ramillon Rene Securing system of the abutment type for skis
US3575438A (en) * 1968-10-19 1971-04-20 Paul Unger Releasing heel retainer for ski binding
US3687471A (en) * 1969-08-27 1972-08-29 Mueller Hans Ski safety binding

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3288476A (en) * 1963-06-07 1966-11-29 Ramillon Rene Securing system of the abutment type for skis
US3575438A (en) * 1968-10-19 1971-04-20 Paul Unger Releasing heel retainer for ski binding
US3687471A (en) * 1969-08-27 1972-08-29 Mueller Hans Ski safety binding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873110A (en) * 1972-11-29 1975-03-25 Rene Ramillon Heel holddown for ski binding
US4088344A (en) * 1975-12-24 1978-05-09 Andreas Hausleithner Ski boot heel release binding for skis

Also Published As

Publication number Publication date
JPS511178B1 (en。) 1976-01-14

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