EP0531466B1 - Fixation electronique de ski de securite - Google Patents

Fixation electronique de ski de securite Download PDF

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Publication number
EP0531466B1
EP0531466B1 EP92904150A EP92904150A EP0531466B1 EP 0531466 B1 EP0531466 B1 EP 0531466B1 EP 92904150 A EP92904150 A EP 92904150A EP 92904150 A EP92904150 A EP 92904150A EP 0531466 B1 EP0531466 B1 EP 0531466B1
Authority
EP
European Patent Office
Prior art keywords
locking
pawl
support member
electromagnet
ski
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
EP92904150A
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German (de)
English (en)
Other versions
EP0531466A1 (fr
Inventor
Heinz H. Bildner
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.)
Implementors Overseas Ltd
Original Assignee
Implementors Overseas Ltd
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Filing date
Publication date
Application filed by Implementors Overseas Ltd filed Critical Implementors Overseas Ltd
Publication of EP0531466A1 publication Critical patent/EP0531466A1/fr
Application granted granted Critical
Publication of EP0531466B1 publication Critical patent/EP0531466B1/fr
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
    • A63C9/088—Ski bindings yieldable or self-releasing in the event of an accident, i.e. safety bindings with electronically controlled locking devices

Definitions

  • Locking devices of this type in configurations as a heel part of a ski safety binding are known from DE 3808643 C1. They have a housing fastened to the ski, on which a retaining member is guided forwards in the longitudinal direction of the ski and is biased forward by a spring arrangement. In a front end region of the retaining member, a holding-down member is pivotally mounted about a transverse axis.
  • the spring arrangement which biases the retaining member forward, is designed so that it also loads the hold-down member in the sense of pivoting forward downward. After a ski boot is buckled on, its rear sole part is pressed forward by a lower projection formed on the hold-down member, while a hook-like projection formed further up on the hold-down member presses the rear sole part downward.
  • a rod is guided in a longitudinally displaceable manner in the housing of the locking device and is biased forward so that its front end is supported on a back surface of the hold-down member.
  • a cam is formed on the rod, which is assigned a switch in the circuit of an electromagnet for unlocking the locking device.
  • the hold-down member is pivoted upwards and backwards by the rear sole part moving upward, so that the switch is actuated via the rod and its cams and the electromagnet receives current as a result.
  • a magnetic armature moves forward pulled and strikes against the rear end of a longitudinally displaceable bolt which is prestressed to the rear and has a conical section which tapers towards the rear and which engages between two rolling bodies serving as locking bodies and normally holds them in a locking position in which they hold a supporting body in a rest position hold in the housing.
  • the two locking bodies leave their locking position and release the supporting body.
  • the support body on which the rear end of the spring arrangement is supported moves under its pressure backwards into a retracted position; this reduces the preload of the spring arrangement, so that the retaining member and the retaining member mounted on it move backward and release the rear sole part of the ski boot.
  • This known locking device works perfectly when the electromagnet is dimensioned and supplied with such a large current that its armature impinges against the rear end of the bolt with considerable kinetic energy and thereby overcomes the friction which is necessary for the forward movement required of the bolt clamped between the two locking bodies.
  • This friction is dependent on the pretension of the spring arrangement, which is converted by the hold-down member into forward and downward forces acting on the rear sole part. So that the kinetic energy required to overcome the friction can be built up in the magnet armature, the magnet armature must have a considerable inert mass. In order to prevent this inertial mass from triggering the ski safety binding unintentionally under certain driving conditions, the magnetic armature must be preloaded backwards by its own spring, but this has the consequence that the electromagnet has an even greater power requirement.
  • the object of the invention is to develop an elastic locking device equipped with an electromagnet in such a way that it triggers with high accuracy and with low power consumption when certain load conditions occur.
  • the magnet armature therefore only needs to have a low inertial mass and consequently only requires a relatively weak magnetic field for its acceleration, which can be generated with low power consumption.
  • the pivot axis is expediently arranged above the locking body in such a way that, under the influence of its own weight, the bolt strives to oscillate into its normal position, in which it holds the locking body in its locking position.
  • the bolt can be under its elastic bias in the sense of pivoting into its normal position.
  • the latch is mounted on the support body and, after the locking body has been released, can be moved together with it and the support body against the pressing direction, that is to say to the rear in the case of a heel part of a ski safety binding.
  • Unintentional triggering can be prevented with great reliability, especially in the case of a heel part of a ski safety binding, if the electromagnet is arranged between the retaining member and the bolt, the magnet axis extends parallel to the pressing direction, and the armature in the predetermined switching state can be moved counter to the pressing direction .
  • a heel part of a safety binding equipped with these features is largely insensitive to sudden delays, which are still harmless to the skier, which can occur, for example, when jumping up or driving quickly through a depression.
  • a rail 16 is fastened on the ski 10 and has a profile in the form of a lying C that is symmetrical to the vertical longitudinal center plane 18 of the ski.
  • An elastic locking device 20 is held in the rail 16, which in the example shown serves as a heel part of a ski safety binding and has the task of not holding the rear sole part 14 forward shown front binding of known design, as well as to press down and release this rear sole part 14 in the event of danger in the event of a toppling backwards and in the event of a frontal toppling upwards.
  • the elastic locking device 20 is designed essentially symmetrical to the longitudinal center plane 18 and has a base plate 22 which is longitudinally adjustable in the rail 16 and is fixed to the ski 10 in the region of the aforementioned front binding with a not shown locking device of known design.
  • a housing 24 is fastened on the base plate 22, in which a retaining member 26 is guided so as to be displaceable in the longitudinal direction of the ski and exerts a forward force on the rear sole part 14; the direction of this force is referred to below as the pressing direction A.
  • a contact surface 28 is formed on the front of the retaining member 26. 1 shows the ski boot 12 in its normal position, in which its rear sole part 14 bears against the contact surface 28.
  • Fig. 2 shows the ski boot while getting into the binding, it being assumed that the front binding, not shown, is closed by depressing the tip of the ski boot.
  • a holding-down member 30 designed as a lever is mounted in the longitudinal center plane 18 so that it can be swiveled up and down; a bearing sleeve 32 in the lower front area of the retaining member 26 serves as a pivot bearing.
  • the holding-down member 30 has a hare 34, which presses against the upper side of the rear sole part 14, one from the nose facing away from groove 36 and above it a flat back surface 38. Except with the nose 34, which presses down the rear sole part 14, the hold-down member 30 does not touch the ski boot 12; the hold-down member can therefore only absorb upward forces which are exerted on the nose 34 by the rear sole part 14. By contrast, rearward forces exerted by the rear sole part 14 are absorbed directly by the retaining member 26.
  • a support body 40 is also guided to be longitudinally displaceable.
  • the support body 40 is essentially cylindrical and has at its rear end two cheeks 42 which are parallel to the longitudinal center plane 18 and project vertically downwards and which in their upper region carry a pivot axis 44 in the form of a horizontally transverse pin, that is to say normal to the vertical longitudinal center plane 18.
  • a bolt 46 is pivotally mounted in the longitudinal center plane 18, which extends in its normal position, drawn in full lines in FIG. 2, at a right angle to the base plate 22 from the swivel axis 44 downward.
  • a shoulder 48 is formed which, in the normal position of the bolt, presses a roller-shaped locking body 50 downward.
  • the locking body 50 extends parallel to the pivot axis 44, that is also at right angles to the longitudinal center plane 18, and has pins 52 at its two lateral ends, each of which is guided in a vertical slot 54 in one of the cheeks 42.
  • a return spring 56 is arranged, which is designed as a helical compression spring, supported on the rear of the housing 14 and constantly strives to keep the support body 40 in its front end position, which can be seen above all from FIG Rest position is called.
  • the return spring 56 also exerts a small torque on the bolt 46, by means of which it is returned to its normal position when, as indicated by the broken lines in FIG. 2, it has been swung out to the rear.
  • the bolt 46 holds the locking body 50 in the position shown in FIGS. 2 and 5 in a partially cylindrical, rearwardly rising trough 58 of the base plate 22. In this position, which is referred to below as the locking position, the locking body 50 prevents together with the bolt 46 any movement of the support body 40 from its rest position to the rear.
  • an electromagnet 60 is arranged in the housing 24, the axis of which is referred to below as the magnetic axis B lies in the longitudinal center plane 18 and extends parallel to the base plate 22.
  • the electromagnet 60 has an armature 62, which has a slender bolt 64 projecting to the rear and is normally held in a front end position by a weak spring 66, in which it lies against an intermediate wall 68 of the housing 24.
  • the armature 62 moves backwards along the magnetic axis B, that is to say counter to the pressing direction A, and the bolt 64 hits the front of the bolt 46 like a bullet.
  • Its shoulder 48 is in the area in which it lies Locking body 50 touches, inclined upward at a small angle against the magnetic axis B.
  • this angle is dimensioned such that it is close to the area of self-locking.
  • the bolt 46 and the locking body 50 are both made of hardened steel and the shoulder 48 and the locking body 50 are ground.
  • the angle between the magnetic axis B and the shoulder 48, in the region in which it touches the blocking body 50 is advantageously approximately 4 to 6 °.
  • a moderately strong impact of the bolt 64 on the bolt 46 is sufficient to pivot it backwards.
  • the support body 40 supports the retaining member 26 and at the same time the holding-down member 30 via a spring arrangement 70, which is accommodated above the electromagnet 60 inside the housing 24 and partially inside the retaining member 26.
  • the spring arrangement 70 includes a screw 72 pointing forward in the pressing direction A, which is rotatably mounted in the support body 40 and is prevented by a transverse pin 74 from axially displacing with respect to the support body.
  • the screw 72 is accessible through a recess, not shown, in the housing 24 for a torque-transmitting tool, for example an ordinary screwdriver.
  • a nut 76 is screwed onto the screw 72 from the front and is guided in the support body 40 so as to be longitudinally displaceable and secured against rotation.
  • a spring 78 is supported in the form of a helical compression spring, which presses with its front end against a telescopically guided sleeve 80 in the support body 40, so that it normally rests against a shoulder 82 formed in the retaining member 26 and thus the force of the spring 78 acting in the pressing direction A transmits to a greater or lesser extent directly to the retaining member 26.
  • a roller 84 is mounted, which in the groove 36 of the holding-down member 30 presses.
  • the rear sole part 14 presses the nose 34 upward, so that the hold-down member 30, as shown by a comparison of FIG. 2 with FIG. 1, counterclockwise against the force of the spring arrangement 70 by a small angle , i.e. to the rear, is pivoted.
  • the spring assembly 70 includes a central tie rod 86 that is bolted to the front end of the sleeve 80 and extends rearwardly through a plug 88 that is screwed into the screw 72 from the front.
  • the preload of the spring 78 set in this way can be increased according to the needs of the user by turning the screw 72 so that the nut 76 moves forward.
  • the force achieved in this way in the pressing direction A remains effective only as long as the bolt 46 remains in its normal position and thus holds the locking body 50 in its locking position. This is the case as long as the electromagnet 60 remains de-energized.
  • the blocking body 50 has already received a first impulse which supports this rolling out by the friction of the shoulder 48 of the bolt 46 which swivels backwards.
  • the locking body 50 thus has a tendency from the beginning of an unlocking process to rotate in the correct sense, counterclockwise according to FIG. 2.
  • the blocking body 50 has to overcome only negligibly small frictional forces, which are essentially based on rolling friction, in order to move from its blocking position to a further-lying evasive position in which it can no longer prevent the supporting body 40 from moving from its rest position to a retracted position reach.
  • the pins 52 of the locking body 50 do not leave the vertical slots 54 in the two cheeks 72 of the support body 40.
  • the bolt 46 and the locking body 50 remain ready to return to the normal position of the locking bolt, which is also the locking position of the locking body, as soon as the return spring 56 succeeds in pushing the support body 40 back forward into its rest position.
  • both the retaining member 26 and the holding-down member 30 release the sole part 14.
  • the retaining member 26, however, remains constantly loaded by an additional spring 90, which is only moderately pretensioned in comparison to the spring 78 and presses in the pressing direction A against a guide pin 92 fastened to the retaining member 26 and also extending in the pressing direction A.
  • This has a longitudinal slot 94, through which a vertical pin 96 attached to the housing 24 extends, as a result of which the size of the possible longitudinal movement of the retaining member 26 relative to the housing 24 is limited.
  • the spring 90 normally holds the retention member 28 in its forward end position defined by the longitudinal slot 94, even when the hold-down member 30 loads the spring assembly 70 so that the sleeve 80 moves away from the shoulder 92.
  • a ski brake 100 is also indicated, which is pivotally mounted in the bearing sleeve 32 and is thus integrated into the elastic locking device 20.
  • the movements of the retaining member 26 and the holding-down member 30 are sensed separately.
  • the front end is supported on the retaining member 26 and the holding-down member 30, each of a rod 102 or 104, which is guided in the housing 24 in a longitudinally displaceable manner and is biased in the pressing direction A by a spring 106 or 108.
  • the bias of the spring 108 associated with the hold-down member 30 is approximately four times the bias of the spring 106.
  • the cam 110 on the rod 102 is assigned two switches 122 and 124 which can be mechanically actuated by it and which are arranged at a distance one behind the other, while the cam 112 on the rod 104 is assigned only one switch 126 which can likewise be actuated mechanically.
  • Each of the two cams 110 and 112 is also assigned a stop 128 or 130 formed on the housing 24 such that the cam 110 cannot be moved past the switch 124 and the cam 112 cannot be moved past the switch 126.
  • the retaining member 26 should be moved so far back and / or the holding-down member 30 should be pivoted so far back that the associated rod 102 or 104 should have its shoulder 118 or 120 past the stop 128 or 130, then the associated cam 110 or 112 still stops in front of the switch 124 and 126 concerned and ensures that it remains actuated.
  • the length of both rods 102 and 104 is adjustable so that the switching points are adjustable.
  • each of the switches 124 and 126 is connected in series with a timer 132 and 134, which can be adjustable, and both switches 122 and 124 together with the associated timers 132 and 134 are parallel to one another in the circuit of the electromagnet 60, the includes a power source 136 formed by a plurality of batteries. These are preferably lithium SO2 batteries, which remain charged for a very long time when not in use and, in order to be able to act, require activation from time to time by a short circuit.
  • Switch 122 serves this purpose and is run over by associated cam 110 each time the ski 10 is buckled up. The cam 110 then normally remains in an intermediate position between the switches 122 and 124, as indicated by dash-dotted lines in FIG. 6. With small forward movements of the retaining member 26, which occasionally occur during driving, for example when driving through troughs, the switch 122 is repeatedly reached by the cam 110, so that the batteries 136 remain activated during skiing, even if no dangerous condition occurs.
  • the ski boot 12 rotating on the ski 10 pushes the retaining member 26 rearward, so that the cam 110 actuates the switch 124.
  • the electromagnet 60 is energized.
  • the cam 112 has actuated the switch 126 in the event of a frontal fall and the time period defined by the timer 134 of, for example, 0.03 s has elapsed.
  • the bolt 64 strikes the bolt 46 with such force that it swings backwards from its normal position, the locking body 50 reaches its evasive position and, as a result, the support body 40 moves into its retracted position, so that the retaining member 26 and the holding-down member 30 be relieved of the pressure of the spring arrangement and release the ski boot 12.
  • all movable components return to their normal position under the influence of the springs 56, 66 and 90, so that the ski 10 can be strapped on again without further ado.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Prostheses (AREA)

Claims (5)

  1. Dispositif de blocage élastique, en particulier partie de talon d'une fixation de sécurité de ski, équipé
    - d'un boîtier (24) devant être fixé à l'un de deux objets à verrouiller entre eux, en particulier à un ski (10),
    - d'un élément de retenue (26), qui est guidé déplaçable dans une direction d'application de pression (A) vers le second des objets à verrouiller entre eux, en particulier une chaussure de ski (12),
    - d'un élément d'appui (40) qui est déplaçable par rapport au boîtier (24) depuis une position de repos dans le sens contraire de la direction d'application de pression (A) dans une position de rappel,
    - d'un dispositif élastique (70), qui s'appuie sur l'élément d'appui (40) et charge l'élément de retenue (26) dans la direction d'application de pression (A),
    - d'au moins un élément de blocage (50), qui adopte normalement une position de blocage, dans laquelle il maintient l'élément d'appui (40) dans sa position de repos, et qui est déplaçable dans une position d'écartement, dans laquelle il permet un mouvement de l'élément d'appui (40) dans sa position de rappel,
    - d'un verrou (46), qui maintient normalement l'élément de blocage (50) dans sa position de blocage, et
    - d'un électro-aimant (60) équipé d'une armature (62), qui est déplaçable dans un état de commutation prescrit d'un circuit contenant l'électro-aimant (60) le long d'un axe magnétique (B) contre le verrou (46), afin de le rendre inactif et de permettre ainsi un mouvement de l'élément d'appui (40) dans sa position de rappel, caractérisé en ce que le verrou (46) est disposé pivotant autour d'un axe de pivotement (44) disposé perpendiculairement à l'axe magnétique (B) à distance de celui-ci et présente à distance de l'axe de pivotement (44) un épaulement (48), qui exerce normalement une pression contre l'élément de blocage (50) et fait avec l'axe magnétique (B) un angle se trouvant dans la plage de l'auto-blocage.
  2. Dispositif de blocage selon la revendication 1, caractérisé en ce que l'axe de pivotement (44) est disposé au-dessus de l'élément de blocage (50), de telle sorte que le verrou (46) sous l'influence de son propre poids est sollicité à osciller dans sa position normale, dans laquelle il maintient l'élément de blocage (50) dans sa position de blocage.
  3. Dispositif de blocage selon la revendication 1 ou 2, caractérisé en ce que le verrou (46) se tient dans sa position normale sous précontrainte élastique dans le sens d'un pivotement.
  4. Dispositif de blocage selon l'une des revendications 1 à 3, caractérisé en ce que le verrou (46) est disposé sur l'élément d'appui (40) et après dégagement de l'élément de blocage (50) est déplaçable conjointement avec celui-ci et l'élément d'appui (40) à l'encontre de la direction d'application de pression (A).
  5. Dispositif de blocage selon l'une des revendications 1 à 4, caractérisé en ce que l'électro-aimant (60) est disposé entre l'élément de retenue (26) et le verrou (46), l'axe magnétique (B) s'étend parallèlement à la direction d'application de pression (A), et l'armature (62) est déplaçable dans l'état de commutation prescrit à l'encontre de la direction d'application de pression (A).
EP92904150A 1991-03-27 1992-02-06 Fixation electronique de ski de securite Expired - Lifetime EP0531466B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4110163 1991-03-27
DE4110163 1991-03-27
PCT/EP1992/000265 WO1992017252A1 (fr) 1991-03-27 1992-02-06 Fixation electronique de ski de securite

Publications (2)

Publication Number Publication Date
EP0531466A1 EP0531466A1 (fr) 1993-03-17
EP0531466B1 true EP0531466B1 (fr) 1995-04-26

Family

ID=6428375

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92904150A Expired - Lifetime EP0531466B1 (fr) 1991-03-27 1992-02-06 Fixation electronique de ski de securite

Country Status (6)

Country Link
US (1) US5308102A (fr)
EP (1) EP0531466B1 (fr)
JP (1) JP3223976B2 (fr)
AT (1) ATE121642T1 (fr)
DE (1) DE59202020D1 (fr)
WO (1) WO1992017252A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5743550A (en) * 1994-02-12 1998-04-28 Frohwein; Otto Electronically controlled safety binding for skis and snow board
US6769711B1 (en) 2000-08-10 2004-08-03 Ralph M. Martin Gas powered backwards release ski binding
US6659494B1 (en) 2000-08-10 2003-12-09 Ralph M. Martin Backwards release ski binding on a pivot plate mount
FR2896427B1 (fr) * 2006-01-20 2010-09-24 Salomon Sa Fixation de securite pour chaussure de ski
FR2896426B1 (fr) * 2006-01-20 2008-05-09 Salomon Sa Fixation de securite d'une chaussure sur un ski
US9305120B2 (en) 2011-04-29 2016-04-05 Bryan Marc Failing Sports board configuration

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2375880A1 (fr) * 1976-12-30 1978-07-28 Salomon & Fils F Dispositif de verrouillage a declenchement electromecanique
FR2418655A1 (fr) * 1978-03-03 1979-09-28 Look Sa Fixation de securite pour ski
AT371014B (de) * 1981-03-10 1983-05-25 Tyrolia Freizeitgeraete Sicherheitsschibindung
FR2506171B1 (fr) * 1981-05-22 1985-05-31 Look Sa Dispositif de verrouillage pour fixation de ski
DE3132465A1 (de) * 1981-08-17 1983-09-22 Marker Patentverwertungsgesellschaft mbH, 6340 Baar Sicherheits-skibindung
EP0346414B1 (fr) * 1987-11-27 1992-10-21 Implementors Overseas Limited Unite de fixation de skis a declenchement automatique
DE3808643C2 (de) * 1987-11-27 1994-04-28 Implementors Overseas Ltd Selbsttätig auslösbare Skibindungseinheit

Also Published As

Publication number Publication date
ATE121642T1 (de) 1995-05-15
WO1992017252A1 (fr) 1992-10-15
JP3223976B2 (ja) 2001-10-29
JPH08501704A (ja) 1996-02-27
US5308102A (en) 1994-05-03
DE59202020D1 (de) 1995-06-01
EP0531466A1 (fr) 1993-03-17

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