US20130207356A1 - Front unit for a sliding board binding, touring binding and ski-jumping binding - Google Patents

Front unit for a sliding board binding, touring binding and ski-jumping binding Download PDF

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Publication number
US20130207356A1
US20130207356A1 US13/761,594 US201313761594A US2013207356A1 US 20130207356 A1 US20130207356 A1 US 20130207356A1 US 201313761594 A US201313761594 A US 201313761594A US 2013207356 A1 US2013207356 A1 US 2013207356A1
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United States
Prior art keywords
engagement
front unit
actuation
binding
sliding board
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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.)
Abandoned
Application number
US13/761,594
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English (en)
Inventor
Fritz Barthel
Johann Ortner
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BARTHEL Fritz
Original Assignee
Fritz Barthel
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Publication date
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Assigned to BARTHEL, FRITZ reassignment BARTHEL, FRITZ ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ORTNER, JOHANN
Publication of US20130207356A1 publication Critical patent/US20130207356A1/en
Abandoned legal-status Critical Current

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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
    • A63C9/24—Tighteners for ski 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
    • A63C9/0807—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings for both towing and downhill skiing
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C10/00—Snowboard bindings
    • A63C10/28—Snowboard bindings characterised by auxiliary devices or arrangements on the 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
    • A63C9/08507—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
    • A63C9/08557—Details of the release 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
    • A63C9/08557—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
    • A63C9/086—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings using parts which are fixed on the shoe of the user and are releasable from the ski binding
    • 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 front unit for a sliding board binding, comprising two engagement elements, which comprise engagement portions which are set up so as to engage opposite lateral portions of a sliding board boot, the engagement elements being held pivotably on the front unit, and a tensioning means, which produces a resilient force for biasing the engagement portions in the engagement direction, the tensioning means comprising a displaceably held tensioning element.
  • the invention further relates to a touring binding and to a ski-jumping binding which are equipped with a front unit of this type.
  • a front unit of a sliding board binding generally has the purpose of holding a front portion of a sliding board boot on the sliding board, the sliding board binding generally further comprising a heel unit, which is responsible for fixing a heel portion of the boot.
  • the lateral engagement elements are in the form of a left and right holding jaw, which engage around a tip of the sliding board boot and receive it between them, and which can be spread apart from one another by overcoming a spring force, in such a way that they release the boot in the case of a fall (releasing the binding).
  • the sliding board binding In ski-jumping bindings, touring bindings or cross-country bindings, the sliding board binding must be set up so as to release a heel portion of the sliding board boot, in such a way that it can lift off from the sliding board, whilst a front portion of the sliding board boot is held pivotably on the front unit about a pivot axis extending transverse to the longitudinal axis of the sliding board.
  • the engagement elements of ski-jumping bindings and touring bindings comprise for example bearing means, which engage in complementary bearing means on opposite lateral front portions of the sliding board boot so as to form a rotary bearing. These bearing means are generally formed by projections which latch into corresponding depressions. In these bindings too, the engagement portions are biased into the engagement position with the sliding board boot, so as on the one hand to provide secure engagement of the bearing means and on the other hand to ensure emergency release of the binding.
  • Tensioning means of known front units use flat spiral springs to produce the necessary tensile force.
  • Springs of this type have the advantage that they are hardly subject to any wear, can be produced cost-effectively, and have a well-defined force characteristic.
  • flat spiral springs have a linear movement characteristic, and thus act on a displaceably held tensioning element, movement conversion between the pivoting movements of the engagement elements and the displacement movement of the tensioning element is required. This is generally provided by a pivotable lever (for example of the engagement element) sliding against a linearly displaceably guided displacement element.
  • the object of the present invention is to provide a front unit for a sliding board binding, which is of a simple construction, operates with relatively low wear, and reduces frictional losses between the engagement elements and the tensioning element.
  • a front unit for a sliding board binding comprising two engagement elements, which comprise engagement portions which are set up so as to engage opposite lateral portions of a sliding board boot, the engagement elements being held pivotably on the front unit, and a tensioning means, which produces a resilient force for biasing the engagement portions in the engagement direction, the tensioning means comprising a displaceably held tensioning element, the conversion between the pivoting movements of the engagement elements and the displacement movement of the tensioning element being provided by way of a lever mechanism, which comprises: two levers which pivot in a manner corresponding to the engagement elements, a displacement portion which is displaced in a manner corresponding to the tensioning element, and an articulation element, which comprises a first and a second pivot point at which it is pivotably connected to the levers and comprises a third pivot point, positioned between the first and the second pivot point, at which third pivot point it is pivotably connected to the displacement portion.
  • a sliding board is understood to mean any type of ski, snowboard or splitboard (snowboard which can be split in the longitudinal direction) or other board-like means for coupling to a boot and for moving along on snow and ice.
  • terms such as “up”, “down”, “lateral”, “forwards”, “backwards” or the like refer to a normal state of the front unit during use, in which normal state the front unit is mounted as intended on a sliding board, a sliding board boot of the user has entered the sliding board binding and is ready for travel, and the sliding board is positioned on a horizontal plane.
  • the conversion between the pivot movement of the engagement elements and the displacement movement of the tensioning element is provided by way of a lever mechanism, which transfers the pivot movement of two levers and the displacement movement of the tensioning element into one another by way of an articulation element, which comprises three pivot points arranged in a row for coupling the levers and the displacement portion.
  • the effect of the special arrangement of the pivot points on the articulation element is that the resulting lever mechanism always converts a pivot movement of the levers into a substantially linear movement of the displacement portion, and conversely a substantially linear displacement movement of the displacement portion is always converted into a pivot movement of the levers.
  • this conversion results from the above-disclosed arrangement of the pivot points on the articulation element in relation to the levers and the displacement portion, and no linear guide is necessary for the displacement portion.
  • the lever mechanism according to the present invention operates by the basic principle of a Watt linkage to convert the pivot movement of two levers, each articulated to fixed anchor points, into an approximately linear movement.
  • a major advantage resulting from the use of the lever mechanism according to the invention is that the movement can be converted entirely without the use of a linear guide and without the use of elements which slide against one another. Instead, the elements of the lever mechanism are mounted rotatably on one another at pivot points.
  • Rotary bearings can be manufactured with outstanding force transmission properties and only small frictional losses.
  • the bearing surfaces of rotary bearings generally overlap one another, in such a way that penetration of impurities, snow and moisture is obstructed, and these bearings thus exhibit lower wear than linear guides, cam mechanisms, control cam mechanisms or the like.
  • the two levers of the lever mechanism are formed by the engagement elements themselves, that is to say the engagement elements are coupled directly to the first and second pivot point respectively of the articulation element, in such a way that the lever mechanism according to the invention can be manufactured with a small number of parts.
  • the engagement elements are held pivotably about a vertical axis (Z-axis), in such a way that the engagement elements can be mounted with a smaller construction height above the sliding board.
  • the engagement elements can thus engage the front portion of a sliding board boot from the front in the manner of tongs.
  • each of the two engagement elements is pivotably mounted on a bearing portion on the front unit, and comprises a first lever arm extending from the bearing portion to the engagement portion and a second lever arm extending from the bearing portion to the articulation element.
  • Engagement elements of this type may in particular be of an L shape, and the second lever arms may point towards a central longitudinal axis of the front unit.
  • a construction of this type makes it possible to arrange the articulation element substantially in the region of the central longitudinal axis of the sliding board, and in particular also to displace the displacement portion substantially in the longitudinal direction of the sliding board, in such a way that effective use can be made of the construction space available on the sliding board.
  • the displacement portion of the lever mechanism may preferably be formed on the tensioning element, in such a way that the displacement movement of the displacement portion, produced or demanded by the lever mechanism, can be used directly for the movement of the tensioning means without further movement transmission, and thus results in a simpler construction of the front unit.
  • the tensioning means for biasing the engagement portions may comprise a spring means, which is braced against the tensioning element, in such a way that the resilient force can be transmitted directly to the displaceably arranged tensioning element, in particular by way of a spring element having a linear movement characteristic.
  • the spring means may thus be braced on the one hand against the tensioning element and on the other hand against a spring bearing, which is rigidly fixed to the sliding board.
  • the tensioning element may penetrate a clearance in the spring bearing, in such a way that the tensioning element can be displaced in the clearance and can thus be arranged in a compact manner.
  • the tensioning element may furthermore also penetrate the spring means, in such a way that the required constructional space on the sliding board can be further reduced.
  • the front unit further comprises an actuation element which is manually operable by the user, for moving the engagement portions between an engagement position, in which the engagement portions hold a sliding board boot in engagement, and an opening position, in which the engagement portions release the sliding board boot.
  • an actuation element of this type which is to be operated manually and can be operated by the user for example by hand or using a ski pole, it is thus possible for example to move the engagement portions into an opening position before entering the binding, that is to say in particular to move them sufficiently far away from one another that the sliding board boot can be positioned between the engagement portions.
  • an actuation element of this type may be set up so as to make it possible to exit the binding in that the engagement portions are brought into the opening position by manually operating the actuation element.
  • the transition from the opening position into the engagement position may also be provided by manually operating the actuation element, for example by operating it in the opposite direction in comparison with the operation for adjustment in the opening direction.
  • the front unit may comprise an entry mechanism for simpler and more rapid use, which mechanism, upon entry into the binding, brings about in part or completely automatic adjustment of the front unit from the opening position into the engagement position by exerting a contact force from the sliding board boot on the front unit.
  • the technical effect of the aforementioned actuation element may be to move the elements of the front unit, which are relatively strongly biased, in particular the engagement elements and the elements of the lever mechanism, between the engagement position and the opening position by way of the actuation element, with a suitable force amplification or lever effect, in such a way that comfortable operation of the front unit is made possible.
  • the actuation element is pivotably coupled to a portion, which is rigidly fixed to a sliding board, of the front unit at a first actuation pivot axis, that the actuation element is pivotably coupled to an actuation member at a second actuation pivot axis, and that the actuation member is pivotably connected to an element of the lever mechanism, to one of the engagement elements or to the tensioning element at a third actuation pivot axis, the second actuation pivot axis passing a dead position, in which it intersects a connecting line between the first actuation pivot axis and the third actuation pivot axis, when the actuation element moves between the engagement position and the opening position.
  • the resilient force produced by the tensioning means can be used not only for biasing the engagement portions, but also for reliably locking the actuation element, specifically both in the opening position and in the engagement position. In both positions, the actuation element is held securely by the force, the direction of the action of the force (towards the opening position or towards the engagement position) being reversed at the dead point.
  • the invention further relates to a touring binding comprising a front unit of the above-disclosed type according to the invention.
  • reducing the weight and constructional size of the front unit is of particular importance, and so the simple and light construction of the front unit according to the invention achieves particular advantages in bindings of this type.
  • touring bindings are subjected to particularly high reciprocated loads during ascent and subsequent descent, in such a way that the low-wear movement properties of the bindings according to the invention, which movement properties are well-defined as a result of the low friction, can be made use of particularly advantageously in this context during the frequent change between the engagement position and the opening position.
  • touring bindings are particularly conceivable which comprise engagement portions comprising a projecting coupling journal in each case, the coupling journals of the two engagement portions facing towards one another.
  • touring boots which comprise corresponding engagement holes in each case on opposite sides in the front sole portion can be coupled to the front unit.
  • the present invention relates to a ski-jumping binding comprising a front unit of the above-disclosed type.
  • ski-jumping the mechanical properties and functional characteristics of the sliding board binding take on particular importance, which is due to the competitive nature and inherent danger of this type of sport.
  • the reliability of the sliding board binding, as well as the precision with which an engagement state between the boot and the binding and a release behaviour of the binding in the event of a fall are defined, are thus of decisive importance for competition success and for the safety of the ski-jumper.
  • Ski-jumping bindings of the aforementioned type may in particular comprise engagement portions comprising a coupling clearance in each case for receiving a coupling projection, which projects laterally from a front portion of a ski-jumping boot, in such a way that the coupling principle which is known per se can be used for the ski-jumping binding according to the invention for pivotably mounting the ski-jumping ski.
  • the forces acting on the binding of the boot urge the coupling projections out of the respective coupling clearances, the engagement portions being spread apart counter to the spring force of the tensioning means.
  • FIG. 1 is a perspective view of a front unit in accordance with a first embodiment of the present invention in an engagement position
  • FIG. 2 is a perspective view of the front unit shown in FIG. 1 in an opening position
  • FIG. 3 is a plan view of the front unit shown in FIG. 1 in an engagement position
  • FIG. 4 is a plan view of the front unit shown in FIG. 1 in the opening position
  • FIG. 5 is a perspective view of a front unit in accordance with a second embodiment of the invention.
  • a front unit in accordance with the first embodiment of the invention is part of a ski-jumping binding, with which a ski boot 12 is held on a ski-jumping ski (not shown).
  • the engagement between the boot 12 and the front unit 10 can be provided by way of lateral projections 14 L, 14 R, which engage in associated clearances 16 L, 16 R of the front unit 10 .
  • the projections 14 L, 14 R engage rotatably in the clearances 16 L, 16 R respectively, the two rotary bearings having a shared axis of rotation which is directed along a transverse axis Q extending transverse to a longitudinal axis L of the ski.
  • the boot 12 is pivotably mounted on the front unit 10 about the transverse axis Q.
  • the projections 14 L, 14 R of the boot 12 may be spherical, so as to engage in recesses 16 L, 16 R of a corresponding ball socket shape in the front unit 10 ( FIGS. 2 and 4 ).
  • the projections 14 L, 14 R are formed by opposite ends of a rod 18 , which is fastened along the transverse axis Q to a projecting sole portion 20 of the boot 12 , in particular laid in a groove 22 of the sole portion 20 and fixed to the sole portion 20 by means of screws 24 , rivets or the like.
  • the front unit 10 may comprise a base body 26 , which is to be fastened to a ski (not shown) by means of suitable fastening means, in particular screws 28 .
  • the base body 26 by way of the configuration of the fastening means thereof for mounting on the ski, defines a plane of the ski, in relation to which a Z direction pointing vertically upwards from the plane of the ski, an X direction extending parallel to the plane of the ski in the direction of the longitudinal axis L of the ski, and a Y direction extending orthogonal to the X direction and the Z direction are defined.
  • the base body 26 comprises a left bearing portion 30 L, on which a left engagement lever 32 L is pivotably mounted, and comprises a right bearing portion 30 R, on which a right engagement lever 32 R is pivotably mounted.
  • a left boot engagement portion, in this case formed by the left clearance 16 L, is provided on the left engagement lever 32 L, whilst a right boot engagement portion, in this case formed by the right clearance 16 R, is provided on the right engagement lever 32 R.
  • the engagement levers 32 L, 32 R are pivotably mounted on the bearing portions 30 L, 30 R, in such a way that the clearances 16 L, 16 R can move towards or away from one another.
  • a pivot axis S 1 of the left engagement lever 32 L on the left bearing portion 30 L and a pivot axis S 2 of the right engagement lever 32 R on the right bearing portion 30 R preferably point in the Z direction, that is to say vertically upwards.
  • the front unit 10 further comprises a tensioning means 34 , which produces a resilient force for biasing the clearances 16 L, 16 R in the engagement direction, that is to say towards the boot 12 .
  • the resilient force is produced by a spring means 36 , preferably a flat spiral spring, which is braced on the one hand against a spring bearing 38 , which bearing is rigidly fixed to the base body 26 , and on the other hand against a tensioning element 40 , which is held displaceably with respect to the base body 26 .
  • the tensioning element preferably comprises a rod portion 42 and a head portion 44 which is fastened to or formed on the end of the rod portion 42 .
  • the rod portion 42 is preferably passed through the spring bearing 38 through a clearance (not shown) in the spring bearing 38 in such a way that the tensioning element 40 can be displaced along the axis of the rod portion 42 .
  • the rod portion 42 preferably carries a spring stop 46 , against which the spring means 36 is braced.
  • the spring stop 46 may particularly preferably be adjustable in the position thereof on the rod portion 42 , for example comprising an internal thread which is engaged with an external thread of the rod portion 42 , in such a way that a bias of the spring means 36 can be adjusted by rotating the spring stop 46 . It can further be seen from the drawings that the rod portion 42 can penetrate the spring means 36 in the axial direction.
  • the spring means 36 can be braced against the spring bearing 38 , for example against an inner annular shoulder of a stepped hole in the spring bearing 38 , or be held in an annular groove of the spring bearing 38 .
  • the spring means 36 has a linear movement characteristic, that is to say the tensioning element 40 which is loaded by the spring means 36 moves back and forth in a substantially linear direction.
  • the conversion between this displacement movement and the pivoting movement of the engagement levers 32 is provided by using a lever mechanism which operates by the same principle as a Watt linkage.
  • the lever mechanism comprises an articulation element 48 , on which the left engagement lever 32 L is pivotably mounted about a pivot axis S 4 , the right engagement lever 32 R is pivotably mounted about a pivot axis S 5 , and the tensioning element 40 , in particular the head portion 44 of the tensioning element 40 , is pivotably mounted about a pivot axis S 6 .
  • the pivot axes S 4 , S 5 and S 6 are distinct from one another, extend mutually parallel and are preferably in substantially the same plane.
  • a pivot bearing 50 (pivot point), at which the left engagement lever 32 L is mounted on the articulation element 48 , a pivot bearing 52 (pivot point), at which the tensioning element 40 is mounted on the articulation element 48 , and a pivot bearing 54 (pivot point), at which the right engagement lever 32 R is mounted on the articulation element 48 are arranged in a row on the articulation element 48 , the pivot bearing 52 for the tensioning element 40 being arranged between the two other pivot bearings 50 , 54 , in particular in the centre directly between the pivot bearings 50 , 54 .
  • the three pivot axes S 4 , S 5 and S 6 extend in the Z direction.
  • the articulation element 48 may comprise two plate portions 56 , 58 which extend mutually parallel, for receiving the engagement levers 32 L, 32 R between them, in such a way that in particular bearing axes (only a bearing axis 60 of the right engagement lever 32 R is shown in the drawings) of the engagement levers 32 L, 32 R can be mounted or held stably on both sides of the engagement levers 32 L, 32 R in the plate portions 56 , 58 .
  • the head portion 44 is formed in the manner of a fork and comprises two plate portions 62 , 64 , which extend mutually parallel and between which the articulation element 48 can be received and pivotably mounted at the pivot point 52 .
  • the fork-like head portion 44 thus engages around the articulation element 48 and, as a function of the rotational position of the articulation element 48 , optionally also engages around one of the two engagement levers 32 L, 32 R in part (in this case an end of the left engagement lever 32 L at the pivot point 50 ).
  • the fork-like head portion also makes stable mounting on the second pivot point 52 possible, in particular whilst preventing one-sided mounting.
  • the front unit 10 of the illustrated embodiment further comprises an actuation mechanism 66 for adjusting the front unit 10 between an opening position and an engagement position.
  • the actuation mechanism 66 comprises a manually operable actuation element 68 in the form of a lever, which is pivotably mounted about a pivot axis S 7 on the base body 26 or on a part which is rigidly connected to the base body 26 .
  • the actuation element 68 is articulated to the spring bearing 38 and the pivot axis preferably extends in the Y-direction.
  • the actuation element 68 acts directly or indirectly on movable parts of the front unit 10 , in such a way that the clearances 16 L, 16 R are moved towards or away from one another in a manner corresponding to the movement of the actuation element 68 .
  • the actuation element 68 is pivotably connected at a pivot axis S 8 , to an actuation member 70 , which is in turn connected, so as to be pivotable about a pivot axis S 9 , to the tensioning element 40 , in this case in particular to the head portion 44 .
  • the pivot axis S 8 is positioned between the pivot axis S 7 and the pivot axis S 9 , and, as a function of the position of the actuation element 68 , can pass through a dead point (dead position), in which the pivot axis S 8 is positioned directly on a connecting line between the pivot axes S 7 and S 9 , that is to say in particular all three pivot axes S 7 , S 8 and S 9 are arranged in a shared plane.
  • the dead point is a labile position, in such a way that outside this dead point the pivot axis S 8 is urged away from the dead point by the force of the spring means 36 .
  • the actuation element 68 can thus be moved into two different stable positions on either side of the dead point and locked there by virtue of the spring means 36 .
  • FIGS. 1 and 3 show an engagement position of the front unit 10 , in which the clearances 16 L, 16 R are moved sufficiently far towards one another that a ski boot 12 can be held securely engaged with the binding 10 .
  • This state is the normal operating state during ski-jumping.
  • FIGS. 2 and 4 show an opening state of the front unit 10 , in which the clearances 16 L, 16 R are pivoted sufficiently far away from one another that the ski boot 12 is released from the engagement with the front unit 10 .
  • the front unit 10 is in this position in particular before entry into the binding and after exiting from the binding.
  • the adjustment between the engagement position and the opening position can be provided by manually operating the actuation element 68 (manually opening and closing the front unit 10 ).
  • the actuation element 68 can be lifted out of the position shown in FIGS. 1 and 3 and pulled towards the boot 12 , resulting in the head portion 44 of the tensioning element 40 being urged towards the boot by way of the movement of the actuation member 70 .
  • the spring means 36 is compressed, in such a way that the operation of the actuation element 68 counteracts the force of the spring means 36 until the dead point of the pivot axis S 8 is reached.
  • the displacement of the tensioning element 40 displaces the articulation element 48 which is held thereon, and pivots the engagement levers 32 L, 32 R, which are coupled to the articulation element 48 , in such a way that the clearances 16 L, 16 R move away from one another.
  • the tensioning element 40 moves a little in the opposite direction again, that is to say away from the boot 12 , this movement corresponding to the force action direction of the spring means 36 , in such a way that the actuation element 68 is also moved further by the force of the spring means 36 , until it is stopped by a stop (opening position).
  • the stop is provided between the actuation element 68 and the actuation member 70 , that is to say a pivot angle between the actuation element 68 and the actuation member 70 is defined on one side by contact between the two parts.
  • the stop is selected in such a way that, in spite of the slight return movement of the tensioning element 40 after passing through the dead point, the distance between the clearances 16 L, 16 R of the engagement levers 32 L, 32 R is still sufficiently large for releasing the boot 12 or for making it possible to insert the boot 12 between the clearances 16 L, 16 R.
  • the actuation element 68 can be moved in the opposite direction, in such a way that, in the embodiment, it is pivoted downwards towards the sliding board (away from the ski boot 12 ).
  • the spring means 36 acts to assist this pivot movement again, and urges the actuation element 68 further towards the engagement position, until it is stopped against a suitable stop, in this case for example on the tensioning element 40 .
  • the actuation element 68 is subsequently pressed securely against this stop, and the engagement position is thus locked.
  • the force is basically only transferred at rotary bearing portions, that is to say in particular at the pivot axes S 1 to S 9 .
  • the pivot movement of the engagement lever 32 L, 32 R is inevitably converted into a substantially linear displacement movement of the tensioning element 40 , without a special linear guide or the like being necessary for this purpose.
  • the tensioning element 40 does penetrate the spring bearing 38 , but no guide or engagement is provided at this position.
  • the rod portion 42 can penetrate the spring bearing 38 , in particular with a large play, and move through it virtually without contact throughout the operation. The risk of a linearly movable element tilting in a guide and the occurrence of frictional losses can thus be prevented.
  • the clearances 16 L, 16 R are biased towards one another by the force of the spring means 36 , so as to hold the boot 12 securely engaged.
  • the boot 12 can subsequently be released from the front unit 10 , so as to prevent injuries to the sportsman.
  • this release process can be influenced by setting the bias of the spring means 36 , in particular by adjusting the spring stop 46 .
  • the contours of the recesses 16 L, 16 R and the contours of the projections 14 L, 14 R associated therewith of the boot 12 also further have an effect on the release characteristics. It can be seen in particular from FIG.
  • the hollow depressions of the clearances 16 L, 16 R may have escape grooves 72 on an edge at the free end of the engagement levers 32 L, 32 R, that is to say the recesses 16 L, 16 R have a notched edge in the region of these escape grooves 72 , in such a way that the projections 14 L, 14 R on the escape grooves 72 can slide out of the clearances 16 L, 16 R more or less easily as a function of the depth of the escape grooves 72 .
  • a preferred release direction can further be specified.
  • the release is thus preferably parallel to the plane of the ski, and this corresponds to an Mz release, that is to say a release when the boot 12 is rotated about an axis in the Z direction.
  • FIG. 5 shows a second embodiment of the present invention, in which a front unit 110 is formed as a front unit of a touring ski binding.
  • engagement portions 116 L, 116 R may comprise inwardly projecting journals 174 L, 174 R for pivotably holding a touring ski boot, in particular journals having conically tapering tips, which can engage in corresponding lateral openings 176 on a front portion of a touring ski boot 112 .
  • All remaining elements of the front unit 110 preferably correspond to the respective elements and functions of the first embodiment disclosed with reference to FIGS. 1 to 4 , and are therefore not described again in the following.
  • the second embodiment only differs from the first embodiment in the above-disclosed configuration of the engagement portions 116 L, 116 R.
  • the force-transmitting bearings of the front unit on the axes of rotation S 1 , S 2 , S 4 to S 9 may in principle be implemented using any types of rotary bearings known to the person skilled in the art.
  • cylinder bearings are used, which only make rotation possible about one axis of rotation.
  • Bearings of this type may be formed in a cost-effective and low-wear manner as pin bearings, in which a bearing pin, provided with a corresponding coating or lubrication on an outer cylinder surface, is rotatably mounted in a matching bearing hole.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US13/761,594 2012-02-07 2013-02-07 Front unit for a sliding board binding, touring binding and ski-jumping binding Abandoned US20130207356A1 (en)

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Application Number Priority Date Filing Date Title
DE102012201812.3A DE102012201812B4 (de) 2012-02-07 2012-02-07 Vordereinheit für eine Gleitbrettbindung, Tourenbindung und Skisprungbindung
DE102012201812.3 2012-02-07

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US20130207356A1 true US20130207356A1 (en) 2013-08-15

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EP (1) EP2626117B1 (fr)
DE (1) DE102012201812B4 (fr)

Cited By (5)

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Publication number Priority date Publication date Assignee Title
US20140137439A1 (en) * 2011-07-07 2014-05-22 ELMI S.r.l. Toe piece of a binding for shoes, with a self-aligning magnetic system
US20140239615A1 (en) * 2013-02-22 2014-08-28 Skis Rossignol Toepiece Which Releases Automatically as a Result of Twisting
US9526972B2 (en) 2014-08-20 2016-12-27 Markus Steinke Front unit for a ski binding and system consisting of a front unit and a rear unit
US11020650B2 (en) * 2016-12-19 2021-06-01 Fischer Sports Gmbh Cross-country or ski touring binding
US20210268364A1 (en) * 2018-07-09 2021-09-02 Ryan PRIEST Ski binding

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CH705579A2 (de) 2011-09-29 2013-04-15 Fritschi Ag Swiss Bindings Frontautomat.
DE102013204060B4 (de) * 2013-03-08 2015-01-22 Micado Cad-Solutions Gmbh Vorderbacken für eine Skitourenbindung
EP2889063B1 (fr) 2014-12-01 2016-11-02 Andreas Kofler Adaptateur pour saut à ski, ainsi que système de saut à ski
DE102020203281A1 (de) * 2020-03-13 2021-09-16 Salewa Sport Ag Vordereinheit für eine skibindung mit einer einstiegshilfe

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US3744810A (en) * 1970-04-14 1973-07-10 Marker Hannes Toe iron for safety ski bindings
US3909026A (en) * 1973-02-23 1975-09-30 Salomon & Fils F Releasable safety device for a ski boot
US4938497A (en) * 1988-01-15 1990-07-03 Salomon S.A. Safety binding for a ski
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DE2907359A1 (de) * 1979-02-24 1980-08-28 Ver Baubeschlag Gretsch Co Langlauf-sicherheitsskibindung
US4348036A (en) * 1980-08-19 1982-09-07 Settembre Richard J Safety binding for nordic skis
DE102010029647A1 (de) * 2010-06-02 2011-12-08 Salewa Sport Ag Tourenbindung

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US3685849A (en) * 1969-09-29 1972-08-22 Hannes Marker Toe iron for safety ski bindings
US3744810A (en) * 1970-04-14 1973-07-10 Marker Hannes Toe iron for safety ski bindings
US3909026A (en) * 1973-02-23 1975-09-30 Salomon & Fils F Releasable safety device for a ski boot
US4938497A (en) * 1988-01-15 1990-07-03 Salomon S.A. Safety binding for a ski
US5240275A (en) * 1990-03-29 1993-08-31 Roland Jungkind Safety ski binding having a pivotable sole plate
US5207448A (en) * 1992-03-27 1993-05-04 Bonvallet Duane J Inertia compensated step-in ski binding
US20040070177A1 (en) * 2002-08-22 2004-04-15 Thierry Buquet Front binding for gliding-sports device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140137439A1 (en) * 2011-07-07 2014-05-22 ELMI S.r.l. Toe piece of a binding for shoes, with a self-aligning magnetic system
US9375630B2 (en) * 2011-07-07 2016-06-28 ELMI S.r.l. Toe piece of a binding for shoes, with a self-aligning magnetic system
US20140239615A1 (en) * 2013-02-22 2014-08-28 Skis Rossignol Toepiece Which Releases Automatically as a Result of Twisting
US9155956B2 (en) * 2013-02-22 2015-10-13 Skis Rossignul Toepiece which releases automatically as a result of twisting
US9526972B2 (en) 2014-08-20 2016-12-27 Markus Steinke Front unit for a ski binding and system consisting of a front unit and a rear unit
US11020650B2 (en) * 2016-12-19 2021-06-01 Fischer Sports Gmbh Cross-country or ski touring binding
US20210268364A1 (en) * 2018-07-09 2021-09-02 Ryan PRIEST Ski binding
US11524220B2 (en) * 2018-07-09 2022-12-13 Ryan PRIEST Ski binding

Also Published As

Publication number Publication date
DE102012201812B4 (de) 2016-10-13
EP2626117A1 (fr) 2013-08-14
EP2626117B1 (fr) 2015-07-01
DE102012201812A1 (de) 2013-08-08

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