US3734520A - Releasable ski boot heel binding - Google Patents

Releasable ski boot heel binding Download PDF

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Publication number
US3734520A
US3734520A US00143145A US3734520DA US3734520A US 3734520 A US3734520 A US 3734520A US 00143145 A US00143145 A US 00143145A US 3734520D A US3734520D A US 3734520DA US 3734520 A US3734520 A US 3734520A
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US
United States
Prior art keywords
cam member
boot heel
casing
ski boot
binding
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
US00143145A
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English (en)
Inventor
N Hashioka
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.)
Hope KK
Original Assignee
Hope KK
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 Hope KK filed Critical Hope KK
Application granted granted Critical
Publication of US3734520A publication Critical patent/US3734520A/en
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
    • A63C9/084—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
    • A63C9/007—Systems preventing accumulation of forces on the binding when the ski is bending
    • 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
    • A63C9/0841—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw
    • A63C9/0842—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with heel hold-downs, e.g. swingable with a single jaw the jaw pivoting on the body or base 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
    • A63C9/0848—Structure or making

Definitions

  • ABSTRACT In a releasable ski boot heel binding comprising a base to be attached to a ski, a casing having a boot heel engaging member at its front end, and a supporting member mounted to the base and pivotably connecting the casing, a cam member is swingably connected to the front portion of the supporting member.
  • the cam member is urged and press-fitted to a transverse pin, which is connected to the front portion of the easing, by a depressing spring.
  • the cam member has a dented portion in which normally the transverse pin engages and a protruded portion against which the transverse pin acts to force back the cam member.
  • This invention relates to a releasable ski boot heel binding to be attached to the top surface of a ski in cooperation with a ski boot toe fixture, and more particularly to a ski boot heel binding wherein a depressing spring urges a cam member swingably connected to a supporting member to a horizontal transverse pin secured to a boot heel engaging casing.
  • a depressing spring normally presses down the fore link, which other end is connected to a boot heel engaging casing, to engage the boot heel in the casing. But, when an abnormal severe upward thrust is applied to the boot heel, the fore link rotates against the compression force of the depressing spring and throws up the casing to release the boot heel therefrom as soon as the fore link passes beyond the dynamic production of the spring.
  • Such known releasable ski boot heel binding has advantages that the relatively small compression fore of the depressing spring is converted to a larger engaging force by means of the toggle link levers and that the casing is instantaneously displaced to the boot heel releasing position when the fore link passes beyond the dynamic production of the depressing spring.
  • Such conventional ski boot heel binding in which the boot heel engaging casing is increasingly displaced in proportion to the upward thrust applied to the boot heel, is said to lack in elasticity or, to say other words, to absorb small amount of upward thrust energy.
  • ski boot heel bindings which has larger elasticity or absorbs large amount of upward thrust energy until it is displaced to the boot heel relasing position with a minimum vertical play of the casing.
  • the forelink in the boot heel engaging position, is at its front end connected to the boot heel engaging casing at a point more advanced than an extension line of the swinging link to form an acute angle therebetween.
  • the engagingforce produced by the depressing spring acting on the links is inverse proportion to the degrees of the acute angle. This means that, when the swinging link and the fore link are arranged substantially on a straight line, the engaging force due to the depressing spring is great. On the other hand, when the acute angle becomes large, the engaging force is inversely proportionally weak.
  • An object of the present invention is therefor to provide a ski boot heel binding which, compared with the conventional ski boot heel bindings, has larger elasticity or absorbs a larger amount of upward thrust energy until it is displaced to the boot heel releasing position with a minimum vertical play.
  • Another object of the present invention is to provide a ski boot heel binding which can be manufactured easily with a uniform prescribed engaging force.
  • Another object of the present invention is to provide ski boot heel bindings which can satisfy many conditions of elasticity or many absorbing conditions of up ward thrust energy to correspond to skiers skill.
  • a releasable ski boot heel binding comprises a base to be attached to a ski, a casing having a boot heel engaging member at its front end and a transverse pin connected at its front portion, a supporting member mounted to said base and pivotably connecting said casing, a cam member swingably connected to the front portion of said supporting member, said cam member having a dented portion in which normally said transverse pin engages and a protruded portion against which said transverse pin acts to force back said cam member, and a depressing spring urging and press-fitting said cam member to said transverse pin.
  • the cam member can be designed as desired. For example, when a larger amount of upward thrust is to be absorbed to give much elasticity to the binding for use of skilled skiers with a minimum vertical play of the casing, the protruded portion of the cam member is steeply protruded. On the other hand, when a smaller amount of upward thrust energy is to be absorbed to give a less elasticity to the binding for use of beginners with an allowable vertical play of the casing, the protruded portion of the cam member is gradually smoothly protruded.
  • the present invention is so constructed that, in either case of the cam profiles mentioned above, the absorbing amounts of the upward thrust energy are greater than those obtained in the boot heel bindings adapting the toggle link levers.
  • This will become apparent when the both of the present and conventional bindings are compared as follows. After setting the both bindings so as to disengage the boot heel at same value of upward thrust, upward thrust enough to start compressing each of the depressing springs of the bindings is increasingly applied to each casing.
  • the fore link rotates about a pivot connecting one end thereof to the swinging link in proportion to the increasing of the upward thrust, with the result that the casing is proportionally displaced toward the boot heel releasing position.
  • the casing of the present binding absorbs more upward thrust energy with less vertical play than the conventional binding.
  • Such binding is said to have much elasticity than the conventional binding.
  • a L-shaped unlocking member is provided to project outside of the casing.
  • the unlocking member is pivoted to the supporting member and is operatively connected at its inner end to the cam member through a connecting lever, so that, when the unlocking lever is pushed down, for example, by a ski pole, the cam member is pulled back against the depressing spring and forces up the horizontal pin beyond the protruded portion of the cam member, thereby displacing the casing to the boot heel releasing position.
  • another compression spring is provided within the supporting member along the longitudinal direction of the ski.
  • the fore end of the spring is received by a spring-receiving member fixed to the supporting member and the other rear end thereof is received by another spring-receiving member which arms are movably fitted into slots in the supporting member.
  • An adjusting screw passes through the rear spring-receiving member and, thereby, moves back and forth the binding along the base by rotation thereof so as to adjust the horizontal force of the binding and to precisely fit the binding to many sizes of ski boots.
  • FIG. 1 is a partially sectioned side view showing a releasable ski boot heel binding in the boot heel engaging position according to a first embodiment of the present invention
  • FIG. 2 is a partially sectioned side view of the same binding in the boot heel releasing position
  • FIG. 3 is a sectioned side view showing only main parts of a releasable ski boot heel according to a second embodiment of the present invention.
  • reference numeral 16 designates a base to be attached to the top surface of a ski.
  • the base is provided at both sides thereof with guide flanges 12 the front portion of which are provided with fixing holes 11.
  • the rear end of the base 16 is folded upright to define a vertical wall 13.
  • Side frames 20 opposed with each other are provided at the lower end thereof with horizontal grooves which are slidably engaged with the guide flanges 12 of the base 10.
  • the side frames are set to the opposite relation by three pins 22, 23 and 24 passing therebetween.
  • Each of the side frames 20 is provided at the lower portion thereof with restricted slot 21 through which sidewardly extending projections or arms 17 at the front end of a spring-receiving member 16 is movably engaged.
  • the spring-receiving member 16 is threaded by an adjusting screw 15 which also threads through a hole 14 in the vertical wall 13 of the base 10.
  • a spring 19 is compressed in parallel to the base between the spring-receiving member 16 and another springreceiving member 18 secured to the pin 23 between the side frames 20.
  • a casing 30 having a boot heel engaging member 31 and a boot heei receiving member 32 covers the side frames 24) and is pivoted thereto by the pin 24.
  • opposite rocking plates 25 are pivoted by the pin 22.
  • a cam member 34 is interposed between the opposite rocking plates 25 and is integrally connected thereto. Alternatively, the cam member 34 may be integrally formed with the rocking plates 25.
  • an front end of a connecting lever 27 is pivoted, the other rear end thereof being pivoted to a front end of a L-shaped unlocking lever 29.
  • the unlocking lever 29 is rockably connected to the side frames 20 by the pin 24.
  • the profile of the cam member 34 comprises a major circular section of small radius and a minor circular section of large radius.
  • the front conjunction of the large and small circular sections forms a dented portion and the small circular section continuing to the dented portion forms a smoothly protruded portion.
  • a horizontal transverse pin 33 is provided at the front lower portion of the casing 30 so that, in the boot heel engaging position or locking position shown in FIG. 1, the pin may locate at the dented portion of the cam member 34.
  • a depressing spring 35 is interposed between a spring-receiving member 36 pivoted to the rockable plates 25 and another spring-receiving member 33 threaded by another adjusting screw 37.
  • the adjusting screw 37 also passes through the upper back portion of the casing 30 to adjust the compression force of the depressingspring 35. The depressing spring thus urges the cam member 34 toward the pin 33.
  • the horizontal pin 33 In normal skiing, the horizontal pin 33 is engaged into the dented portion of the cam member 34 by action of the depressing spring 35. However, when an abnormal thrust caused by such as falling of a user is applied to the boot heel engaging member 31 through his boot heel, the horizontal pin 33 receives the thrust through the casing 30 to rotate about the pin 24. Then, the horizontal pin 33 is disengaged from the dented portion and, rotating about the pin 24, it begins to rise the protruded portion of the cam member 34 and forces back the cam member about the pin 22. As soon as the horizontal pin 33 passes over the foremost protruded portion of the cam member 34, the horizontal pin 33 is thrown up as shown in FIG. 2 by the action of the depressing spring 35.
  • This releasable ski boot heel binding in the locking position shown in FIG. 1 is also displaced at will to the unlocking position by operating the unlocking lever 29.
  • the connecting link 27 pulls back the cam member 34 against the depressing spring 35.
  • the casing 30 is thrown up in the same way as mentioned above.
  • a cam member 40 having a different cam profile from that of the first embodiment is swingably pivoted to a pin 22 on which opposite rocking plates 25 are also swingably pivoted as in the first embodiment.
  • the cam member 40 is also connected to the rocking plates 25 by a pin 26 on which a connecting lever 27 are pivoted. 'll-lerefore, the cam member 40 as well as the rocking plates 25 are integrally swingable about the pin 22 secured to the side frames 20.
  • a spring-receiving member 36 by which the front end of a depressing spring 35 is received is pivoted to the rocking plates 25 at the back of the cam member 40.
  • the cam member 40 has, at its front portions to be cooperated with a horizontal pin 33, a dented portion 41, a steeply protruded portion 42 and a upper slant
  • the horizontal pin 33 is secured to side frames at its both ends of reduced diameter and, in the locking position, the dented portion 41 of the cam member 40 is urged against the pin 33.
  • the depressing spring contributes to swing the cam member 40 forwardly to displace the horizontal pin 33 to the upper slant portion 43 of the cam member 40, so that the casing is displaced about a pin 24 to the unlocking position.
  • Other remaining respects are substantially same as those of the first embodiment.
  • the cam member 40 is connected to the opposite rocking plates by the pins 22 and 26, they may be formed integrally with each other. Furthermore, the horizontal pin 33 secured to the casing 30 to frictionally contact to the cam member 40 may be a roller supported on the pin 33 to reduce the friction therebetween. In view of the frictional portion 43. As shown in FIG. 3, the dented portion 41 contact of the horizontal pin 33 to the cam member 40, preferably the cam member 40 is made of synthetic resin such as sold in the market under a trade mark Derlin.
  • the ski boot heel binding according to the second embodiment of the present invention has a less vertical play of the casing than that of the first embodiment and will be acceptable for skilled skiers.
  • a releasable ski boot heel binding comprising a base which is adapted to be attached to a ski, a casing,
  • a boot heel engaging member at the front end of said thereto, a cam member swingably connected at its 4 upper portion about a transverse horizontal axis to the front portion of said supporting member, said cam member having a dented portion in which said transverse pin is normally engaged and a protruding portion against which said transverse pin acts to force said cam member rearward during release, and a depressing spring slanted downward in the forward direction exerting its force at a point rearwardly of said dented portion and urging said cam member against said transverse pin in the boot engaging position.
  • a releasable ski boot heel binding as claimed in claim 1 further comprising an unlocking lever having a connecting link, the front end of said unlocking lever being operatively connected to said cam member through said connecting link, the other end of said unlocking lever projecting outside of said casing.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US00143145A 1970-05-23 1971-05-13 Releasable ski boot heel binding Expired - Lifetime US3734520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4423170 1970-05-23

Publications (1)

Publication Number Publication Date
US3734520A true US3734520A (en) 1973-05-22

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ID=12685745

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Application Number Title Priority Date Filing Date
US00143145A Expired - Lifetime US3734520A (en) 1970-05-23 1971-05-13 Releasable ski boot heel binding

Country Status (9)

Country Link
US (1) US3734520A (de)
AT (1) AT308607B (de)
CA (1) CA925126A (de)
CH (1) CH544556A (de)
CS (1) CS151095B2 (de)
DE (1) DE2125357A1 (de)
ES (1) ES194317Y (de)
FR (1) FR2093547A5 (de)
NO (1) NO127092B (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810644A (en) * 1971-07-30 1974-05-14 J Beyl Ski binding
US3990724A (en) * 1974-03-29 1976-11-09 Gertsch Ag Ski binding
US4027897A (en) * 1975-11-25 1977-06-07 Kurt Hildebrand Safety ski binding
US4449731A (en) * 1982-02-19 1984-05-22 Marker-Patentverwertungsgesellschaft Mbh Heel holder for safety ski bindings
US4466634A (en) * 1981-06-12 1984-08-21 Marker Patentverwertungsgesellschaft Mbh. Heel holder for safety ski bindings
US4552378A (en) * 1983-03-11 1985-11-12 Tmc Corporation Safety ski binding
US4693489A (en) * 1983-06-23 1987-09-15 Marker International Company Heelpiece for safety ski binding
US5326127A (en) * 1991-06-19 1994-07-05 Look, S.A. Safety binding heelpiece for skis
US20080179862A1 (en) * 2003-02-18 2008-07-31 Kneebinding, Inc. Alpine ski binding heel unit
US20110291386A1 (en) * 2010-05-26 2011-12-01 Salomon S.A.S. Safety binding for ski touring
US20120299255A1 (en) * 2011-05-27 2012-11-29 Skis Rossignol Safety fastening heelpiece for ski boot

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3317217A (en) * 1965-03-01 1967-05-02 Wunder Kg Heinrich Heel downholder for cableless safety ski bindings
US3554571A (en) * 1967-11-21 1971-01-12 Smolka & Co Wiener Metall Ski binding
US3594015A (en) * 1968-03-15 1971-07-20 Geratebau Huber Kg Heel portion of safety ski bindings devoid of cables
US3604720A (en) * 1968-03-29 1971-09-14 Reuge Sa Safety attachment for skis
US3610650A (en) * 1968-07-02 1971-10-05 Eckel Fa H Ski boot holding clamp

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3317217A (en) * 1965-03-01 1967-05-02 Wunder Kg Heinrich Heel downholder for cableless safety ski bindings
US3554571A (en) * 1967-11-21 1971-01-12 Smolka & Co Wiener Metall Ski binding
US3594015A (en) * 1968-03-15 1971-07-20 Geratebau Huber Kg Heel portion of safety ski bindings devoid of cables
US3604720A (en) * 1968-03-29 1971-09-14 Reuge Sa Safety attachment for skis
US3610650A (en) * 1968-07-02 1971-10-05 Eckel Fa H Ski boot holding clamp

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810644A (en) * 1971-07-30 1974-05-14 J Beyl Ski binding
US3990724A (en) * 1974-03-29 1976-11-09 Gertsch Ag Ski binding
US4027897A (en) * 1975-11-25 1977-06-07 Kurt Hildebrand Safety ski binding
US4466634A (en) * 1981-06-12 1984-08-21 Marker Patentverwertungsgesellschaft Mbh. Heel holder for safety ski bindings
US4449731A (en) * 1982-02-19 1984-05-22 Marker-Patentverwertungsgesellschaft Mbh Heel holder for safety ski bindings
US4552378A (en) * 1983-03-11 1985-11-12 Tmc Corporation Safety ski binding
US4693489A (en) * 1983-06-23 1987-09-15 Marker International Company Heelpiece for safety ski binding
US5326127A (en) * 1991-06-19 1994-07-05 Look, S.A. Safety binding heelpiece for skis
US20080179862A1 (en) * 2003-02-18 2008-07-31 Kneebinding, Inc. Alpine ski binding heel unit
US7887084B2 (en) * 2003-02-18 2011-02-15 Kneebinding, Inc. Alpine ski binding heel unit
US20110193324A1 (en) * 2003-02-18 2011-08-11 Kneebinding, Inc. Alpine ski binding heel
US8955867B2 (en) * 2003-02-18 2015-02-17 Kneebinding, Inc. Alpine ski binding heel unit
US20150157921A1 (en) * 2003-02-18 2015-06-11 Kneebinding, Inc. Alpine ski binding heel unit
US9687724B2 (en) * 2003-02-18 2017-06-27 Kneebinding, Inc. Alpine ski binding heel unit
US20110291386A1 (en) * 2010-05-26 2011-12-01 Salomon S.A.S. Safety binding for ski touring
US8714578B2 (en) * 2010-05-26 2014-05-06 Salomon S.A.S. Safety binding for ski touring
US20120299255A1 (en) * 2011-05-27 2012-11-29 Skis Rossignol Safety fastening heelpiece for ski boot
US8820771B2 (en) * 2011-05-27 2014-09-02 Skis Rossignol Safety fastening heelpiece for ski boot

Also Published As

Publication number Publication date
CA925126A (en) 1973-04-24
CH544556A (de) 1973-11-30
CS151095B2 (de) 1973-09-17
NO127092B (de) 1973-05-07
ES194317Y (es) 1975-03-16
AT308607B (de) 1973-07-10
ES194317U (es) 1974-12-01
DE2125357A1 (de) 1971-12-09
FR2093547A5 (de) 1972-01-28

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