WO1998032503A1 - Binding for securing a boot by its toe portion to a ski - Google Patents

Binding for securing a boot by its toe portion to a ski Download PDF

Info

Publication number
WO1998032503A1
WO1998032503A1 PCT/FI1997/000722 FI9700722W WO9832503A1 WO 1998032503 A1 WO1998032503 A1 WO 1998032503A1 FI 9700722 W FI9700722 W FI 9700722W WO 9832503 A1 WO9832503 A1 WO 9832503A1
Authority
WO
WIPO (PCT)
Prior art keywords
boot
binding
bracket member
ski
latch element
Prior art date
Application number
PCT/FI1997/000722
Other languages
French (fr)
Inventor
Ilkka Tuomikoski
Original Assignee
Jonuka Oy
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 Jonuka Oy filed Critical Jonuka Oy
Priority to AU50554/98A priority Critical patent/AU5055498A/en
Publication of WO1998032503A1 publication Critical patent/WO1998032503A1/en

Links

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
    • A63C9/02—Non-self-releasing bindings with swivel sole-plate or swivel parts, i.e. Ellefsen-type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C2201/00—Use of skates, skis, roller-skates, snowboards and courts
    • A63C2201/04—Ski jumping

Definitions

  • the present invention relates to a binding for securing a boot by its toe portion to a ski, particularly to a jumping ski, said binding thus enabling the bearing of the sole of a boot directly against the top surface of a ski and said binding being adapted in a forced situation to release the boot automatically as a force applied to the boot exceeds a predetermined value,
  • an object of the invention is to provide such a binding that the boot bears directly against the top surface of a ski.
  • this object is achieved in such a manner and a binding of the invention is characterized in that on top of a binding bracket member fas- tened to the ski forward of an attachment point of the boot is fitted a latch element secured to the bracket member from a fastening point spaced from the boot, said latch element having its end closer to the boot attachment point adapted to extend beyond the bracket member onto an extension of the sole of the boot, and that further provided is a locking member for locking the bracket member and the latch element relative to each other between said latch element fastening point and the end of the bracket member closer to the boot for concentrating a force applied towards the top surface of the ski on the extension of the sole of the boot through the action of the latch element-
  • the lateral canting of a ski upon landing is minimized by using the novel binding.
  • the ar— rangement is such that the locking member is connected to the bracket member so as to be movable lengthwise of the ski.
  • the bearing area of a spring, preferably provided as a leaf spring, included in the bracket member is substantially flat, the position of the locking member determining an elastic length for the spring and, hence, a rigidity for the spring as well as a force for releasing a boot from a binding.
  • the end of the spring extending beyond the bracket member is fitted with a separate press member, the shape thereof matching that of a locking recess formed in the top surface of the boot sole extension.
  • the locking member comprises an eccentric clamp, whose operating lever constitutes a locking bar, which is in turn provided with a locking element for locking the locking bar in a locking position.
  • the bracket member is pro- vided with a guide surface extending lengthwise of the ski for holding the slide element and the bracket member in contact with each other.
  • the slide element is adapted to extend through elongated slots, provided in the bracket member and in the spring in alignment with each other and extending lengthwise of the ski, the end of said slide element remote from the bracket member being fitted with a cam for pressing the bracket member and the spring between the base portion of the slide element and the cam mounted on the slide e enent against the bracket member.
  • the bracket member is preferably provided with bounding surfaces for eliminating a lateral displacement of the boot sole extension in the transverse direction of the ski .
  • the arran- gement is such that the latch element comprises a substantially rigid member pivotably mounted on the bracket member at a fastening point, and that the locking member is adapted to apply to the latch clement a spring force directed towards the top surface of a ski.
  • the force applied to a boot can be regulated this way by shifting the position of the locking member and/or by varying the spring force of the locking member.
  • Fig. 1 shows a binding of the invention in a schematic side view.
  • Fig. 2 shows the binding of fig. 1 in a plan view-
  • Fig. 3 shows a section along a line Ill-Ill in fig. 1.
  • Fig. 4 shows a section along a line IV-IV in fig. 1
  • the binding of the invention consists of a plate-like bracket member 6, which is fastened to a ski e.g. with screws.
  • a spring 4 which is set in alignment with the bracket 6 by means of guide pins 10.
  • a slot 11 in which travels a slide element 8 which is secured by its bottom end between the bracket member 6 and a top ski sur ace 15.
  • To the slide element 8 is latched an eccentric clamp 1 by means of a cotter 7.
  • the eccentric clamp 1 is locked by means of a latch 2, which in a locking position engages with a clamp 3.
  • a recess 18 included in a ski-jumping boot 12 ⁇ s pressed by a press member 5 mounted on the end of the spring 4.
  • the binding of the invention functions as follows.
  • the eccentric clamp 1 releases the spring 4 and the boot 12 can be pushed into the binding in such a manner that the press member S fits in the recess 18 included in the boot and, by means of the design of the bracket 6, bounding surfaces 22, the boot finds its properly aligned position.
  • the eccentric clamp 1 is shifted to a predetermined point for producing a desired release force for the boot 12.
  • the eccentric clamp 1 will tension the spring 4 and presses the same between a base portion 19 of the slide element 8 of the eccentric clamp 1 and a cam 21 mounted on the slide element 8 against the bracket member 6, said press member 5 clamping the boot against the top surf ce 15 of a ski 13.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

A binding for securing a boot (12) by its toe portion to a ski, particularly to a jumping ski (13), said binding thus enabling the bearing of a sole (14) of the boot (12) directly against a top surface (15) of the ski (13) and said binding being adapted in a forced situation to release the boot (12) automatically as a force applied to the boot exceeds a predetermined value. On top of a binding bracket member (6) fastened to the ski (13) forward of an attachment point of the boot (12) is fitted a latch element (4) secured to the bracket member (6) from a fastening point (10) spaced from the boot, said latch element having its end (16) closer to the boot attachment point adapted to extend beyond the bracket member (6) onto an extension of the sole (14) of the boot (12). Further provided is a locking member (1) for locking the bracket member (6) and the latch element (4) relative to each other between said latch element fastening point (10) and the end of the bracket member (6) closer to the boot (12) for concentrating a force applied towards the top surface (15) of the ski (13) on the extension of the sole (14) of the boot (12) through the action of the latch element (4).

Description

Binding for securing a boot by its toe portion to a ski
The present invention relates to a binding for securing a boot by its toe portion to a ski, particularly to a jumping ski, said binding thus enabling the bearing of the sole of a boot directly against the top surface of a ski and said binding being adapted in a forced situation to release the boot automatically as a force applied to the boot exceeds a predetermined value,
All prior type bindings have secured a ski-jumping boot several millimeters above the top surface of a ski. The release automatics has increased the height by 16 mm. The height of a bearing point from the snow level cau- ses difficulties in ski control, making the ski prone to "canting".
In order to eliminate this problem, an object of the invention is to provide such a binding that the boot bears directly against the top surface of a ski.
According to the invention, this object is achieved in such a manner and a binding of the invention is characterized in that on top of a binding bracket member fas- tened to the ski forward of an attachment point of the boot is fitted a latch element secured to the bracket member from a fastening point spaced from the boot, said latch element having its end closer to the boot attachment point adapted to extend beyond the bracket member onto an extension of the sole of the boot, and that further provided is a locking member for locking the bracket member and the latch element relative to each other between said latch element fastening point and the end of the bracket member closer to the boot for concentrating a force applied towards the top surface of the ski on the extension of the sole of the boot through the action of the latch element- The lateral canting of a ski upon landing is minimized by using the novel binding.
In one preferred embodiment of the invention, the ar— rangement is such that the locking member is connected to the bracket member so as to be movable lengthwise of the ski. Thus, the bearing area of a spring, preferably provided as a leaf spring, included in the bracket member is substantially flat, the position of the locking member determining an elastic length for the spring and, hence, a rigidity for the spring as well as a force for releasing a boot from a binding.
In one preferred embodiment of the invention, the end of the spring extending beyond the bracket member is fitted with a separate press member, the shape thereof matching that of a locking recess formed in the top surface of the boot sole extension. These aspects have also a crucial meaning in terms of a force for re- leasing a boot from bindings.
In a recommended working example of the invention, the locking member comprises an eccentric clamp, whose operating lever constitutes a locking bar, which is in turn provided with a locking element for locking the locking bar in a locking position.
Intended for the base portion of a slide element included in the eccentric clamp, the bracket member is pro- vided with a guide surface extending lengthwise of the ski for holding the slide element and the bracket member in contact with each other. The slide element is adapted to extend through elongated slots, provided in the bracket member and in the spring in alignment with each other and extending lengthwise of the ski, the end of said slide element remote from the bracket member being fitted with a cam for pressing the bracket member and the spring between the base portion of the slide element and the cam mounted on the slide e enent against the bracket member.
The bracket member is preferably provided with bounding surfaces for eliminating a lateral displacement of the boot sole extension in the transverse direction of the ski .
In yet another embodiment of the invention, the arran- gement is such that the latch element comprises a substantially rigid member pivotably mounted on the bracket member at a fastening point, and that the locking member is adapted to apply to the latch clement a spring force directed towards the top surface of a ski. The force applied to a boot can be regulated this way by shifting the position of the locking member and/or by varying the spring force of the locking member.
One preferred embodiment of the invention will now be described in more detail with reference m dia to the accompanying drawing, in which:
Fig. 1 shows a binding of the invention in a schematic side view.
Fig. 2 shows the binding of fig. 1 in a plan view-
Fig. 3 shows a section along a line Ill-Ill in fig. 1.
Fig. 4 shows a section along a line IV-IV in fig. 1
The binding of the invention consists of a plate-like bracket member 6, which is fastened to a ski e.g. with screws. On top of the bracket member is mounted a spring 4, which is set in alignment with the bracket 6 by means of guide pins 10. in the middle of both the bracket member 6 and the spring 4 is a slot 11, in which travels a slide element 8 which is secured by its bottom end between the bracket member 6 and a top ski sur ace 15. To the slide element 8 is latched an eccentric clamp 1 by means of a cotter 7. The eccentric clamp 1 is locked by means of a latch 2, which in a locking position engages with a clamp 3. A recess 18 included in a ski-jumping boot 12 ±s pressed by a press member 5 mounted on the end of the spring 4.
The binding of the invention functions as follows. When the latch 2 is raised to an upright position, the eccentric clamp 1 releases the spring 4 and the boot 12 can be pushed into the binding in such a manner that the press member S fits in the recess 18 included in the boot and, by means of the design of the bracket 6, bounding surfaces 22, the boot finds its properly aligned position.
The eccentric clamp 1 is shifted to a predetermined point for producing a desired release force for the boot 12. When the latch 2 is pivoted to a horizontal position and locked in the clamp 3, the eccentric clamp 1 will tension the spring 4 and presses the same between a base portion 19 of the slide element 8 of the eccentric clamp 1 and a cam 21 mounted on the slide element 8 against the bracket member 6, said press member 5 clamping the boot against the top surf ce 15 of a ski 13.
By shifting the position of the slide 8 in the slot 11, it is possible to achieve a stepless regulation for the clamping force of the spring 4. This makes it possible that the force for releasing a boot from the binding can be stepleasly adjusted to fit various circumstances. If, in a forced situation, the boot is subjec- ted to major forces which could damage the foot, the elasticcity of the spring enables the release of a ski- jumping boot from the binding. It is obvious for a skilled person that the invention is not limited solely to the described example but may vary within the scope of the subsequently appended claims. Thus, for example, the above-described eccentric clamp can be replaced with a screw.

Claims

m»-im-q
1. A binding for securing a boot (12) by its toe portion to a ski, particularly to a jumping ski (13), said binding thus enabling the bearing of a sole (14) of the boot (12) directly against a top surface (15) of the ski ( 3) and said binding being adapted in a forced situation to release the boot (12) automatically as a force applied to the boot exceeds a predetermined va- lue, c h a r a c t e r i z e d in that on top of a binding bracket member (S) fastened to the ski (13) forward of an attachment point of the boot (12) is fitted a latch element (4) secured to the bracket member (6) from a fastening point (10) spaced from the boot, said latch element having its end (16) closer to the boot attachment point adapted to extend beyond the bracket member (6) onto an extension of the sole (14) of the boot (12), and that further provided ±3 a locking member ( 1 ) for locking the bracket member ( 6 ) and the latch element (4) relative to each other between said latch element fastening point (10) and the end of the bracket member (6) closer to the boot (12) for concentrating a force applied towards the top surface (15) of the ski (13) on the extension of the sole (14) of the boot (12) through the action of the latch element ( ) .
2. A binding as set forth in claim 1, c h a r a c t e r i z e in that the locking member ( 1 ) is connected to the bracket member so as to be movable lengthwise of the ski (13).
3. A binding as set forth in claim 1, c h a r a c t e r i z e d in that the latch element (4) comprises a leaf spring.
4. A binding as set forth in claim 3, c h a r a c t e - r i 2 e d in that a bearing area (17) for the leaf spring (4) provided on the bracket member (6) is substantially flat.
5 5. A binding as set forth in claim 1, c h a r a c t e r s e d in that an end (16) of the latch element (4) extending beyond the bracket member (6) is fitted with a press member (5).
0 6. A binding as set forth in claim 5, c h a r a c t e r i z e d in that the shape of the press member (5) is selected to match the shape of a locking recess (18) provided on the top surface of the extension of the sole (14) of the boot (12). 5
7. A binding as set forth in claim 1, c h a r a c t e r i z e d in that the locking member (1) comprises an eccentric clamp, having an operating lever (2) which constitutes a Locking bar for the binding, which is in 0 turn provided with a locking element (3) for locking the locking bar in a locking position.
6. A binding as set orth in claim 7, c h a r a c t e i z e d in that, for the base portion (1 ) of the 5 slide element (8) included in the eccentric clamp (1), the bracket member (6) is provided with a guide surface (20) extending lengthwise of the ski (13) for holding the slide element (8) and the bracket member (6) in contact with each other, and that the slide element (8) 0 is adapted to extend through elongated slots (11), provided In the bracket member (6) and in the latch element (4) in alignment with each other and extending lengthwise of the ski, the end of said slide element (8) remote from the bracket member (6) being fitted b with a aam (21) for pressing the bracket member (6) and the latch element (4) between the base portion (19) of the slide element (β) and the cam (21) mounted on the slide e enent
(8) against the bracket member (6). B
9. A binding as set forth in claim 1, c h a r a c t e - r i z e d in that The bracket member (6) is provided with bounding surfaces (22) for eliminating a lateral displacement of the extension of the sole (14) of the boot (12) in the transverse direction of the ski (13).
10. A binding as set forth in claim 1, c h a r a c t e r i z e d in that the latch element (4) comprises a substantially rigid member pivotably mounted on the bracket member (6) at the fastening point (10), and that the locking member ( 1 ) is adapted to apply to the latch element (4) a spring force directed towards the top surface (15) of the ski (13).
PCT/FI1997/000722 1996-12-10 1997-11-26 Binding for securing a boot by its toe portion to a ski WO1998032503A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU50554/98A AU5055498A (en) 1996-12-10 1997-11-26 Binding for securing a boot by its toe portion to a ski

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FIU960605 1996-12-10
FI960605U FI3090U1 (en) 1996-12-10 1996-12-10 Jumping Binding

Publications (1)

Publication Number Publication Date
WO1998032503A1 true WO1998032503A1 (en) 1998-07-30

Family

ID=8545399

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1997/000722 WO1998032503A1 (en) 1996-12-10 1997-11-26 Binding for securing a boot by its toe portion to a ski

Country Status (3)

Country Link
AU (1) AU5055498A (en)
FI (1) FI3090U1 (en)
WO (1) WO1998032503A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370490A2 (en) * 1976-11-16 1978-06-09 Beyl Jean Joseph Alfred Ski safety binding with impact release - has support plate permanently fixed to boot engaging with pivot on ski
DE3412073C1 (en) * 1984-03-31 1989-08-10 Heinz 8391 Tiefenbach Beck Cross-country ski safety binding
DE4142390A1 (en) * 1991-08-05 1993-02-11 Silvretta Sherpas Sportartikel Binding for jumping ski - incorporates release part positioned in guides on base part, with guide jaw and tension piece
DE4142391A1 (en) * 1991-12-20 1993-06-24 Silvretta Sherpas Sportartikel Ski boot with flexible sole with front protrusion - which has semicircular transverse groove over entire sole width
EP0553468A1 (en) * 1991-12-20 1993-08-04 silvretta-sherpas Sportartikel GmbH Safety binding
EP0586365A1 (en) * 1992-08-24 1994-03-09 Franz Aichholzer Combination of a safety binding for ski jumping with a shoe for ski jumping

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2370490A2 (en) * 1976-11-16 1978-06-09 Beyl Jean Joseph Alfred Ski safety binding with impact release - has support plate permanently fixed to boot engaging with pivot on ski
DE3412073C1 (en) * 1984-03-31 1989-08-10 Heinz 8391 Tiefenbach Beck Cross-country ski safety binding
DE4142390A1 (en) * 1991-08-05 1993-02-11 Silvretta Sherpas Sportartikel Binding for jumping ski - incorporates release part positioned in guides on base part, with guide jaw and tension piece
DE4142391A1 (en) * 1991-12-20 1993-06-24 Silvretta Sherpas Sportartikel Ski boot with flexible sole with front protrusion - which has semicircular transverse groove over entire sole width
EP0553468A1 (en) * 1991-12-20 1993-08-04 silvretta-sherpas Sportartikel GmbH Safety binding
EP0586365A1 (en) * 1992-08-24 1994-03-09 Franz Aichholzer Combination of a safety binding for ski jumping with a shoe for ski jumping

Also Published As

Publication number Publication date
FIU960605U0 (en) 1996-12-10
AU5055498A (en) 1998-08-18
FI3090U1 (en) 1997-10-13

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