EP0327614B1 - Anti-theft device - Google Patents

Abstract

An anti-theft device for a ski safety binding comprises a jaw with ratchets and abutments for supporting locking devices which maintain a sole support in a locked position. To achieve a device of this type which precludes the possibility of a successful unauthorized manipulation which does not impair the fitness for use of the binding itself, a locking device (100) has a locked position in which a part coupled with an abutment (102, 21) or with a ratchet (10, 11) is maintained in a position corresponding to the open or released position of the binding.

Description

The invention relates to an anti-theft device on a safety ski binding with a cheek that has at least one sole holder that can be brought optionally into a latching position and into an open position and at least one mechanically or electronically releasable latching device that holds the sole holder in the latching position against spring force, the latching device - or the open position of the sole holder-causing components are non-positively coupled to one another.

Such anti-theft devices have been e.g. known from EP-A-0142702. In this known solution, a lock is provided which fixes the binding in one position. However, there is the disadvantage that the lock must be accessible from the outside, which means that unauthorized tampering with this lock cannot be prevented on the one hand and therefore securing is only of questionable value, since the binding e.g. remains visibly functional after the lock has been destroyed and, on the other hand, under the conditions of use of a ski, considerable problems can result from icing of the lock if appropriate care is not taken to maintain it.

Furthermore, CH-A-637842 has already proposed to provide a lockable blocking of the ski brake in the case of a binding with an integrated ski brake. This also has the disadvantage that the elements causing the blocking are accessible from the outside and can be deactivated with a corresponding force, no damage to the actual binding having to be assumed from the outset, so that even after a corresponding manipulation the ski brake can be expected to work properly.

In addition, AT-A-290350 proposed a safety ski binding in which a release member which can be controlled by a transmitter is arranged in the locking mechanism. This makes it possible to release the binding by means of the transmitter in the event of a risk of falling and thus enable separation from the ski. Protection against theft However, this is not the case in any way, since the binding can easily be locked and unlocked by means of a manual release.

The aim of the invention is to avoid these disadvantages and to propose an anti-theft device of the type mentioned at the outset, in which the securing device is arranged as largely as possible in a protected manner and in which an inoperative function of the binding must be expected when using force, so that such an attempt is due to obvious futility of such an undertaking is not even attempted.

According to the invention, this is achieved in that the anti-theft device has a transmission device which is separate from the security ski binding and which, via a receiving device connected to the security ski binding, optionally controls a locking device which can be controlled into an open or locked position and which in its locked position locks into a blocking position only when it is in the open position Binding position assumes, in which a return of the locking device is prevented in a position corresponding to the closed position of the binding.

These measures make it possible to fix the binding in its open position, so that the jaws can no longer be brought out of this locked position, and it is therefore impossible to use the binding. The locking device can expediently be arranged in the jaw so that it is not accessible from the outside. Unauthorized manipulation of the locking device is also reliably prevented, since this can only be influenced by corresponding signals from an associated transmitter.

In principle, there would also be the possibility of locking the binding in its closed position by means of the anti-theft device. However, the rightful user would always have to ensure that the safety device is only activated when the binding is in the closed position. Otherwise there would be the danger that when the anti-theft device is activated in the open position of the binding, the binding is entered and the binding can then no longer fulfill its security function. This would endanger the legitimate user, but also lead to liability problems in the event of unauthorized use. It should be noted that the risk of the anti-theft device being operated incorrectly in this way is relatively high, since most skiers, especially when taking short breaks, put the skis in the open position or ready for re-entry after they have left the binding.

In the case of a safety ski binding with a jaw with an electronic evaluation circuit, the force transducers emitting electrical signals, an electrical power supply, e.g. a battery, and an electromagnetic trigger member, the trigger member having at least one latch arrangement driving a control member that controls a locking mechanism engaging the jaw, wherein the electromechanical trigger member is preferably arranged in at least part of the locking mechanism in a housing, according to one Another feature of the invention can be provided that the anti-theft device has a transmission device which is separate from the security ski binding and which optionally controls a locking device which can be controlled into an open or locked position via a receiving device connected to the security ski binding and which interrupts the circuit of the electrical power supply in its locking position.

Depending on the exact structure of the jaw, this measure either makes it impossible to lock it, but at least its proper function as a safety binding is impossible. In order to avoid any errors by the authorized user, it can expediently be provided that the transmitting device can only be operated consciously. For this purpose, there is primarily a two-button operation for triggering the transmitter, by means of which the transmitter can only be activated when two buttons are pressed at the same time. This is an involuntary activation of the transmitter, which e.g. worn on the equipment, safely prevented in the event of a fall.

In a preferred embodiment of the invention it is provided that the transmission device is provided separately from the binding and preferably has a shift register which is loaded with a memory loaded with a specific code or has a shift register which is also connected to a clock generator and which is connected on the output side to a transmitter stands.

This measure enables the binding to be locked and ready for operation in a very simple and convenient manner, the transmitter being distinguished by a very simple structure.

It can further be provided that a signal button is connected upstream of the shift register in the transmission device for emitting signals corresponding to the code loaded in memory, that a power amplifier is provided between the shift register and the transmitter, and that the transmitter is an infrared transmitter.

This makes it possible to emit appropriate signals for reversing the locking device of the binding by a simple push of a button on the transmitter, whereby the design of the transmitter as an infrared transmitter results in the advantage of a relatively short range, so that overexposure to nearby ones Skis of the same type are avoided, and thus an undesirable influence on the skis is avoided.

Furthermore, it can be provided that the receiving device provided for receiving signals transmitted wirelessly by the transmitting device includes a code evaluation circuit which has a shift register and a comparator connected downstream thereof, which is connected to or has a memory loaded with a specific code, and emits a pulse if the received code matches the stored code.

This results in a simple structure of the receiving device, which also enables a reliable differentiation of the received signals after the binding assigned or not assigned signals, the sufficiency being found with relatively small shift registers.

According to a further feature of the invention, it can be provided that the locking device has an electromagnetic device which can be reversed via pulses and brought into two rest positions, the armature of which is designed as a locking member, or a part controlled by the armature forms the locking member.

This results in a very simple and reliable locking device that can be controlled in a simple manner.

A particularly simple construction of the receiving device results when the receiving device is followed by an interlocking circuit, which is essentially composed of a divider, which reduces the pulses in a ratio of 1: 2, and two AND gates and the commutator circuit connected downstream thereof, in the diagonal branch of which the Coil of the locking device is located, and that a subsequent flip-flop is caused to flip by each signal of the comparator of the receiving device, the pulses of which are applied to the coil.

In a preferred embodiment of the invention it is provided that the locking member is formed by a locking pin or locking hook which is arranged displaceably in the direction of its longitudinal extension in the locking device, or is designed as a pawl which is relative to the locking device in a plane transverse to the plane of movement of the component to be locked is pivotable, and that this locking member is effective in the movement of an abutment, a stop or a detent.

As a result, the jaw is locked in the area of its locking mechanism, whereby an arrangement of the locking member is possible in such a way that manipulation of the sole hold-down which is accessible from the outside has no effect on it. As a result, the locking member itself can be made relatively small and weak, so that the space required for the locking member can be kept correspondingly small.

In the case of the arrangement of a separate locking member controlled by the armature, the latter can expediently be actuated via a spring which is arranged as a coupling member between the armature and the locking member. This makes it possible to bring the locking member into a ready position at any time, the locking member going into the locking position when a certain position of the locking mechanism of the jaw is reached. Since the locking device assumes its locking position in the open position of the binding, a maximum degree of security for the user against the consequences of a possible error or incorrect operation is achieved.

In a binding with a jaw, in which a release lever biased against its rest position, at least when it is deflected in its release position, acts directly on the latching of the sole holder, it can be provided according to a further feature of the invention that the locking device in its locked position in the movement path of a engages the abutment, which acts as an abutment, and lies in the interior of the jaw of the release lever and inhibits its return from the release position, the release lever preferably having an articulation located in the interior of the jaw, which entrains the inner part of the release lever through its outer Part only allows in the actuation direction for deflection in its release position.

This training is particularly suitable for purely mechanical bindings and is characterized by a very simple structure. The division of the release lever into two partial levers connected via the joint provides the advantage that a force effect on the locking device is reliably prevented via the release lever. However, this also prevents the locking device from being put out of operation by external force.

In order to prevent the locking device from being influenced from the outside by parts of the jaw, in a binding according to the invention with a sole holder which is spring-loaded against its deflected position and has a driver which, when the sole holder is pivoted out in its release position, on a detent or in a released position or an abutment located in its triggered position can be brought to rest and this or this resets it in its or its working position, it can be provided that the driver is formed by an extension designed in the form of a spring, preferably a leaf spring, which with a Approach is operatively connected to the outer support arm.

As a result, the flow of force from the sole holder to the abutment or catch blocked by the locking device is also interrupted, or the exertion of impermissibly high forces on the locking device is reliably prevented.

It can further be provided that this can advantageously be inserted through the part coupled into the movement path of a part coupled with the catch or with the abutment Pin-formed locking member of the locking device is connected via a spring to its drive, preferably formed by the electromagnetic device, which biases the pin against an end position determined by a stop which can be moved by the drive.

The functionality of the device as an anti-theft device is in no way called into question, since in order to get into a binding it is necessary to bring the jaws into their open position. When the locking member is in the standby position, it transitions into its locking position and reliably prevents the binding from locking into its closed position. At the same time, however, the user notices this and can, if he is in the possession of the transmitter, bring the binding back into its operational state, in which it is possible to lock the binding in the closed position.

A particularly simple embodiment of such a locking device is obtained if the stop is formed by a sleeve or bushing which is supported in the armature of the electromagnetic device which is formed as a slide.

In order to enable the user to easily check the state of his binding, it can be provided according to a further feature of the invention that the locking element is coupled to a display device whose pointer is in one of the two rest positions of the locking device in the region of a viewing window of the jaw.

A further embodiment of the locking member which is very advantageous with regard to a compact and small construction of the baking results if the locking member is formed by an interrupter switch which is interposed in the main electrical circuit of the binding and which is in its "locked position of the locking device in its" From "position.

• Fig. 1 bis 4 schematisch eine erste Ausführungsform eines Backens mit einer erfindungsgemäßen Diebstahlsicherung
• Fig. 5 bis 8 schematisch ein weiteres Ausführungsbeispiel einer Bindung mit einer erfindungsgemäßen Diebstahlsicherung
• Fig. 9 den mechanischen Aufbau einer Sperreinrichtung
• Fig. 10 und 10a schematisch zwei verschiedene Ausführungsbeispiele für eine Sperreinrichtung und
• Fig. 11 ein Blockschaltbild einer Sende- und Empfangseinrichtung mit Auswerteschaltung zur Ansteuerung der Sperreinrichtung.

The invention will now be explained in more detail with reference to the drawing. Show:

• Fig. 1 to 4 schematically shows a first embodiment of a baking with an anti-theft device according to the invention
• 5 to 8 schematically show a further embodiment of a binding with an anti-theft device according to the invention
• Fig. 9 shows the mechanical structure of a locking device
• 10 and 10a schematically show two different embodiments for a locking device and
• 11 is a block diagram of a transmitting and receiving device with an evaluation circuit for controlling the locking device.

1 to 4 show a releasable jaw of a purely mechanical binding. In this case, the sole holder 103 is connected to a holding part 101 which, in connection with an abutment designed as a stop 102 and a catch 112 acting as a holding-down part, can be held in its locked working position.

In the jaws shown in these figures, the catch 112 is pivotally mounted in the base body 109 and is biased by the spring 113 against the catch position in which the catch engages over the holding part 101.

The release lever 104 is divided into two parts, its part 114 projecting from the jaw being connected to the part 141 of the release lever 104 pivotably mounted in the sole holder 103 via a joint 106 arranged in the interior of the jaw. This joint allows the outer part 114 to pivot relative to the inner part 141 in a counterclockwise direction, but not in a clockwise direction. This can be achieved, for example, in that the end of part 114 engages in the fork-shaped end of part 141 and is connected to it via an axis, wherein the region of the part lying above the hinge axis is rounded, the region lying below this axis lies snugly against the base of the fork-shaped head of part 141.

The inner part 141 of the release lever 104 carries in its free end region a stop 102 against which the holding part 101, as can be seen from FIG. 1, bears, which is overlapped by the catch 112. In the event of a safety release, the sole holder 103 swivels up about the axis 108 due to the acting forces, the holding part 101, which cannot deflect due to the stop 102, pivoting the catch 112 back against the force of the spring 113.

When the release lever is pivoted from its spring-loaded rest position shown in FIG. 1 into its release position shown in FIG. 2, the stop 102 is pivoted upward away from the holding part 101, the outer part 114 taking the inner part 141 along via the joint 106. As a result, the spring-loaded catch 112 can now press the holding part 101 held in the slots 105 of the sole holder 103 so that the catch can rotate counterclockwise until it disengages from the holding part 101 and the sole holder 103 can pivot freely upwards .

If the locking device 100 arranged in the interior of the sole holder 103 and held by it is in its locked position, a pin 411 engages in the path of movement of the part 141 of the release lever 104 and prevents this part from returning to its spring-loaded rest position, in which the abutment 102 is one Displacement of the holding part 101 prevented. However, this makes it impossible to lock the sole holder 103 in its working position and thus to drive the skis (FIG. 4).

Due to the articulation 106 arranged in the interior of the sole holder 103, it is also not possible to exert a force on the locking device 100 by rotating the outer part 114 of the release lever 104 in order to possibly cause this. to be unable to function, since the joint 106 allows pivoting of this part counterclockwise without further ado.

Only after the locking device 100 has returned to its release position can the inner part 141 of the release lever 104, and thus also the stop 102, be in its rest position return, in which a locking of the sole holder 103 is possible, the spring 107 assisting the return of the inner part 141 of the release lever 104. The outer part 114 of the release lever is also carried along via the joint 106.

The structure and function of the locking device 100 and a variant 100 'thereof will be explained in more detail later with reference to FIGS. 10 and 10a.

The binding shown in Fig. 5 is designed as a plate binding, the binding plate 1 is rotatable about a spherical pin 46 which is arranged in the region of the point of intersection of the axis of the tibia of the skier with the ski plane and a rotation of the binding plate in the plane of Skis allowed. In the front area of the binding plate 1, this has a transverse axis 41 which passes through a slot 42 of a ski-arranged holder 45 which runs in the longitudinal direction of the ski and which projects into a recess arranged on the underside of the binding plate 1 with great play on all sides, as a result of which a limited rotation of the Binding plate around the pin 46 and pivoting up the binding plate 1 about the axis 41 is possible.

Furthermore, in the front area of the binding plate 1, a rigid, non-releasable toe jaw 43 is held in the longitudinal direction of the binding plate so that it can be adjusted and locked.

The releasable heel jaw 47 arranged in the rear region of the binding plate is connected to the binding plate 1 and can be swiveled up about the axis 9, which is held in an upstanding rib of the binding plate 1. Furthermore, the binding plate 1 is firmly connected in its rear area to a switching module 44 which is supported in a ski-mounted abutment 2 via force transducers 4 and a measuring element 3 which has a spherical head-shaped end.

As a result, the binding plate 1 is essentially fixed in its position, but a movement of the binding plate 1 in the extent of the measuring paths of the force transducers 4 is possible, which due to the fixed pivot points of the binding plate around the pin 46 and the axis 41, the detection of the on Allow binding plate 1 acting moments ± Mz and ± My.

The parts belonging to the locking mechanism of the jaw and arranged inside the housing 6 of the switching component 44 are always "inner" parts and the outside this housing 6 arranged parts of the locking mechanism referred to as "outer" parts.

A conventional opening spring 23 is provided on the heel cheek 47, which is supported on the binding plate 1 and the sole holder 17, and biases it towards its end position, shown in broken lines in FIG. 6 and shown in full lines in FIG. 7 .

The sole holder 17 has a locking lug 16 projecting against its interior, which in the locked position of the binding is overlapped by a roller 18a which is held on an outer locking lever 18. This outer locking lever 18 is pivotally held on an axis of rotation 28, which in turn is fixed to the part of the heel shoe fixed to the binding plate. On the outer locking lever 18 a coupling rod 20 is articulated, which connects the outer locking lever 18 with a further, acting as an abutment supporting member 21 pivotally held about an axis of rotation 29 rigidly connected to the binding plate 1, the coupling rod 20 being articulated in these two parts Supports 38 a tension spring 19 is held with a larger game and displaceable in its longitudinal direction.

The tension spring 19, which urges the two parts apart, acts between the parts connected to one another via the coupling rod 20. Thus, the roller 18a of the outer locking lever 18 is pressed against the locking lug 16 with the support member 21 supported, whereby the sole holder 17 is prevented from swinging up.

A hand opening button 15 is pivotally mounted in the heel jaw 47 about an axis 30, this button 15 being biased against its inactive position by means of a spring 31. When the hand opening button is pressed, it pivots counterclockwise or counter to the force of the spring 31 and presses the release pin 14, which is held in a bushing of the housing 6 and is biased by a spring 14a against its inactive position shown in the figures. This release pin 14 is sealed to the illustrated embodiments by means of an O-ring against the housing 6, but it is also possible to seal the release pin by means of a membrane which is stretched over the free end of the release pin, or is designed as part of the housing and on which the hand opening button 15 can be brought into contact.

The measuring element 3 is supported on the ski-fixed abutment 2 via a ball-joint-shaped receptacle. This measuring element 3 has force transducers 4, which detect the moments ± My and ± Mz occurring on the binding plate 1 about their axes of rotation and convert them into electrical signals. These force transducers 4, which e.g. can be designed as a piezoelectric transducer or as a strain gauge are connected to the housing 6 of the switching module 44, in which the battery, the evaluation circuit 5, and an electromechanical trigger element, e.g. as in the illustrated embodiments, an electromagnet and parts of the mechanical locking system of the binding are housed.

The battery receiving chamber, not shown, as well as the chamber 32 receiving the electronic evaluation circuit 5, which lies in front of the battery receiving chamber, are attached to the housing 6 of the switching component 44 or are formed by parts thereof. The electromechanical release element is formed by an electromagnet 13 having a hinged armature 11, which is connected to the evaluation circuit 5 or the battery via lines (not shown). The hinged anchor 11 is biased by a weak return spring 12 against its dropped position from the core and has a locking surface 33 on which a part of the locking mechanism of the sole holder 17 can be brought into contact.

When the binding is ready for operation, a pawl-like inner lever 10 bears against the dropped hinged anchor 11. This inner lever 10 is held pivotably about an axis 34 held in the housing 6 and is biased against its unlocked position by means of a weak spring 35. This inner lever 10 has an open edge 36. An inner locking arm 8 engages in this recess with its angled end. This inner locking arm 8, which can also be designed as a bracket, is connected in a rotationally fixed manner to a shaft 7 which is tightly guided through the housing 6.

On this shaft 7, outside the housing 6, an outer latch arm 22, which is designed as a roller lever for reasons of low friction, is held in a rotationally fixed manner. This outer latch arm 22 supports the in the operational state Binding to an outer support member 21 pivotable from an axis 29 rigidly connected to the binding plate, which is designed as a support lever and serves as an abutment for the tension spring 19, which counteracts the outer locking lever 18 and thus its roller 18a, as already explained the latch 16 of the heel jaw 17 presses.

As indicated by dash-dotted lines in FIG. 6, the outer support member 21 is supported on the outer locking arm 22 in such a way that the outer support member 21 with the outer locking arm 22 encloses a 90 ° angle to exert a torque on the outer locking arm 22 , which biases this against its unlocked position. This torque is intercepted via the inner locking arm 8, which engages in the recess 36 of the inner lever 10, and the inner lever 10, which in turn is supported on the locking surface 33 of the hinged armature 11.

If the trigger pin 14 is pressed against the hinged armature 11 by actuation of the hand opening button 15, or the electromagnet 13 pulls the hinged armature 11, which is only small due to the weak return spring 12 and the low friction forces which occur due to the lever ratios and the support by means of detent Forces are required, the inner lever 10 loses its support and the torque acting on the outer locking arm 22 rotates the inner locking arm 8 out of the recess 36, whereby the locking arm 8 loses its support. However, this also allows the outer support member 21 to rotate into the position shown in FIG. 7, as a result of which the outer latching lever 18 provided with the roller 18a loses its pressure against the latching lug 16 of the sole holder 17 and this after the sole has been released due to this external forces can swing up.

When the sole holder 17 is swiveled up, an attachment 39 of the same, which is only shown in FIG. 8 for reasons of better clarity, comes into contact with an attachment 40 of the outer latching arm 22, which for the same reason is also only shown in FIG. 8, and rotates this in its working position shown in FIGS. 6 and 8, the projection 40 of the outer locking arm 22 protruding from it to the right.

The approach 39 of the sole holder 17 is formed by a leaf spring, which can only transmit a limited force to the approach of the outer locking arm 22. Although this is sufficient to securely turn the outer latch arm back into its working position from its triggered position, it is not sufficient to be able to transmit a force 100 which is damagingly high for the locking device 100 arranged in the part of the heel shoe 47 fixed to the binding plate. This locking device 100 projects in the locked state with a pin 411 in the path of movement of the outer support member 21 and inhibits its return from its released position into its working position, whereby the outer locking arm 22 is prevented from returning from its released position. However, this means that the sole holder 17 cannot be locked when the locking device is in the locked position.

The turning back of the outer locking arm 22 also causes a turning back of the inner locking arm 8 via the shaft 7, as a result of which the latter comes to rest on the nose 37 of the inner lever 10 and also rotates it back. As a result, it comes to rest against the latching surface 33 of the hinged anchor 11 after it has been briefly deflected from its rest position by the electromagnet 13 after it has dropped, the inner lever 10 sweeping over a run-up surface of the hinged anchor 11. The jaws are now in their ready-to-go condition.

The supply of the locking device 100 or the variant 100 'of the same and the upstream evaluation circuit is expediently provided by the battery provided for the switching module, for which purpose appropriate diversions are provided.

4, a viewing window 413 is indicated for the locking device 100, the slide 408 simultaneously acting as a pointer, which is visible in the locking device 100 when it is in the locked position. The viewing window itself is expediently formed by a transparent insert in the housing of the locking device.

The arrangement of the locking device 100 shown in FIGS. 5 to 9 is to be evaluated as an example in this embodiment of a bakery. Thus, the locking device could just as well be integrated in the switching module 44 and, for example, the armature 11 on a return from its tightened Prevent position in its fallen position or a return of the inner lever 10 in its rest position predetermined by the spring 35 after a release. Furthermore, it would also be possible to bring the anchor itself through the locking device 100, or its variant 100 'which are explained with reference to FIGS. 10, 10a, in the case of the transition from their release position into their locked position to the core, which would trigger a triggering of the baking.

In the latter variant, however, there is an unintentional actuation of the locking device, e.g. by means of a corresponding transmitter emitting signals, to an unintentional release of the binding, in which a fall can hardly be avoided.

In the exemplary embodiments shown in the figures, however, there is no need to fear this, since even an activated locking device 100 can only assume its locking position after the binding has been released. It is provided that the pin 411 of the locking device 100, which can be inserted into the movement path of a catch or an abutment, is spring-loaded against its locking position and, when the locking device is activated, rests laterally against this component and only assumes its locking position when this part is in its released position.

The locking device 100 or 100 'will now be described with reference to FIGS. 10, 10a and 11.

A transmitter circuit 200, a receiver circuit 300 matched to the signals thereof, which also contains an evaluation circuit, and a locking circuit 400 are provided for controlling the locking device.

The transmission circuit 200 has a clock generator 201, which is connected on the output side to a shift register 202. This is connected to a memory loaded with a specific code, not shown, or has such a memory. By actuating the signal button 203, the shift register 202 begins to emit signals corresponding to the code in the rhythm specified by the clock generator 201, which are transmitted to a transmitter, e.g. an infrared transmitter 205.

A corresponding receiver circuit 300 is arranged in the jaw, which essentially consists of a receiver, for example an infrared receiver 301, connected downstream thereof Preamplifier 302 and a clock recovery circuit 303 arranged downstream thereof, which is connected upstream of a shift register 304 which already forms part of the evaluation circuit.

The incoming signals are loaded into the shift register 304 in the rhythm determined by the clock signals filtered out from the incoming signal mixture, which, together with the comparator 305 connected downstream, forms the evaluation circuit, the comparator applying the same code as the shift register 202 of the transmission circuit 200 is. This comparator emits a signal if the code corresponding to the incoming signals matches the stored code. This signal causes a flip-flop 306 connected downstream to flip over, which emits a short pulse.

This pulse is supplied to the latch circuit 400, which is essentially formed by a divider 401, which reduces the pulses in a ratio of 1: 2, and two AND gates 402 and 403 and the commutator circuit 404 connected downstream thereof, in the diagonal branch of which the coil 405 of the Locking device 100, 100 'and is therefore flowed through in different directions by the current.

The divider 401 and the inverting input of the AND gate 402 ensure that the transistors of the same branches of the commutator circuit 404 turn on with every second signal of the comparator 305. Since the flip-flop 306 only emits short pulses, the transistors of the commutator circuit can only switch on for a correspondingly short time, so that the coil 405 is also only subjected to pulses. This ensures low power consumption and the coil can be dimensioned small and exposed to a high current load.

As can be seen from FIGS. 10, 10a, the coil 404 surrounds a magnetizable core 406, which is connected to pole pieces 407 made of a magnetizable material. These have eyelet-like heads in which an anchor is slidably guided. This has a collar 409 formed by a permanent magnet magnetized in the axial direction.

In the locking device 100 according to FIG. 10, the armature is designed as a slide 408, which is a hollow sleeve comprises a bottom, at one end of which a further sleeve 410 is inserted, for example screwed, which is penetrated by a pin 411 having a collar, which is biased by the spring 412 against its extended position.

If the current flows through the coil 405 in pulses, the magnetic field causes the eye-like pole pieces 407 to be polarized accordingly, so that the permanent magnet 409 is repelled by one pole and attracted by the other. This causes the slide 408 to be reversed, as a result of which the locking device 100 moves into its locked position or into the release position shown.

If the locking device 100 is activated in the sense of “locking”, the pin 411 lies against the part 141 (FIGS. 1 to 4), 21 (FIGS. 5 to 9) of the binding to be blocked, the spring 412 being compressed. As soon as this part 141, 22 reaches its release position, the spring 412 pushes the pin 411 into the path of movement of this part and, as already mentioned, blocks its return in its position which enables the sole holder 103, 17 to be locked.

In the locking device 100 'according to FIG. 10a, the anchor is designed as a full anchor 408', which has an end-face extension 411 ', which fulfills the same function as the pin 411 in the locking device 100.

In the locking device 100 ', however, it is advisable to arrange it so that the projection 411' in both end positions of the part to be hung in its movement, past this in its path of movement. Otherwise, it would be necessary to keep the coil 405 energized until the full armature 408 'can assume its corresponding end position, which is only the case when the part to be inhibited in its movement allows the attachment 411' to slide past it Position. However, this would be associated with a corresponding energy requirement of the coil, which is at the expense of the battery supplying the binding.

The locking device 100 'is, however, particularly suitable for installation in the switching module, where it can be arranged such that it holds the hinged armature 11 in its tightened position with the attachment 411'. This would have been Consequence that the outer locking arm 22 can not be held in its support position, and therefore there is no abutment for the tension spring 19, whereby no locking of the sole holder 17 is possible.

Claims (14)

1. An antitheft device on a safety ski binding comprising a jaw assembly having at least one sole clamp adapted to be selectively moved to a detent position and an open position, and at least one mechanically or electronically releasable detent mechanism for holding said sole clamp in its detent position against a spring force, the components acting to move said sole clamp to and/or holding it in its detent and open positions, respectively, being coupled to one another in a force-transmitting manner, characterized in that said antitheft device comprises a transmitter component (200) separate from said safety ski binding and cooperating with a receiver component (300) connected to said safety ski binding for controlling a locking component (100, 100′) adapted to be selectively actuated to an open or a locked state, which in its locked state assumes a position permitting an engagement in a locked position to be accomplished only in the open position of the binding, and in which a return of said detent mechanism to a position corresponding to the closed position of the binding is prevented.

2. An antitheft device on a safety ski binding comprising a jaw assembly and an electronic control circuit connected to electrical signal-generating load detectors, an electric current source, for instance a battery, and an electronic release component, said release component comprising at least a detent mechanism and operating to actuate a control member for controlling a locking mechanism acting on said jaw assembly, said electronic release component being preferably accommodated in a housing, together with at least a part of said locking mechanism, characterized in that said antitheft device comprises a transmitter component (200) separate from said safety ski binding and cooperating with a receiver component (300) connected to said safety ski binding for controlling a locking component (100, 100′) adapted to be selectively actuated to an open or a locked state, and which in its locked state acts to interrupt the current circuit of said electric current source.

3. An antitheft device according to claim 1 or 2, characterized in that said transmitter component (200) is provided separate from said binding and preferably comprises a shift register (202) connected to a memory having a determined code stored therein, and in addition to a timing pulse generator (201), and communicating with a transmitter (205) on its output side.

4. An antitheft device according to any of claims 1 to 3, characterized in that within said transmitter component (200), a signal button (203) for the transmission of signals corresponding to the code stored in said memory is associated to the input side of said shift register (202), that a terminal amplifier (204) is provided between said shift register (202) and said transmitter (205), and that said transmitter (205) is an infrared transmitter.

5. An antitheft device according to claim 1 or 2, characterized in that said receiver component (300) is operable to receive the wireless-transmitted signals from said transmitter component includes a code evaluation circuit (304, 305) comprising a shift register (304) connected at its output side to a comparator (305) connected to or incorporating a memory having a determined code stored therein, and acting to generate a pulse when the received code coincides with the stored code.

6. An antitheft device according to claim 1 or 2, characterized in that said locking component (100, 100′) includes an electromagnetic device (405 to 408 or 408′, respectively) adapted to be controlled by pulses and to assume two stable positions, and that either the armature (408′) of said device is itself designed as a locking member (411′), or said locking member (411) is formed as a component controlled by said armature (408).

7. An antitheft device according to claims 5 and 6, characterized in that said receiver component (300) has its output side associated to a locking circuit (400) substantially composed of a divider (401) acting to divide the pulses at a ratio of 1: 2, two AND gates (402, 403) and a commutator circuit (404) associated to the output side thereof and in the diagonal branch of which the solenoid (405) of said locking component (100) is disposed, and that each signal from said comparator (305) of said receiver component (300) acts to switch an output-wise associated flip-flop (306) the pulses of which are applied to said solenoid (405).

8. An antitheft device according to claim 1 or 6, characterized in that said locking member is formed by a locking pin (411, 411′) or locking catch disposed in said locking component (100, 100′) for sliding displacement in its lengthwise direction, or by a pawl mounted for pivoting relative to said locking component in a plane transversely of the displacement plane of the component to be locked, and in that said locking member is effective in the path of movement of a counterstop (102, 21), a stop member (2) or a detent member (16, 18; 10, 11; 8, 10; 101, 112).

9. An antitheft device according to claim 2 or 6, characterized in that said locking member is formed by a breaker switch disposed in the electric main circuit of said binding and assuming its "OFF" position in the locked state of said locking component.

10. An antitheft device according to any of claims 1 and 3 to 8, for a binding comprising a jaw assembly in which a release lever biased towards its rest position is effective to act directly on the detent mechanism of the sole clamp at least during its being pivoted to its release position, characterized in that said locking component (100) in its locking state obstructs the path of movement of a part (141) of said release lever (104) carrying said stop member (102) acting as a counterstop, and disposed interiorly of the jaw assembly, so as to prevent its return from its release position, said release lever (104) preferably comprising an articulated joint (106) disposed interiorly of said jaw assembly and effective to permit the inner part (141) of said release lever (104) to be entrained by the outer part (114) thereof only in the direction towards its release position.

11. An antitheft device according to any of claims 1 and 3 to 8, comprising a sole clamp spring-biased towards its open position and provided with an engagement member adapted when said sole clamp is being pivoted to its release position to be brought into engagement with a detent member or counterstop, respectively, assuming its released position, so as to reset it to its operative position, characterized in that said engagement member is a projection (39) in the form of a spring, preferably a leaf spring, operatively associated to a projection (40) on the outer support arm (22).

12. An antitheft device according to any of claims 1, 6, 8, 10 or 11, characterized in that said locking member (411) of said locking component (100), advantageously formed by a pin adapted to be projected into the path of movement of a member coupled to said detent member or counterstop (102, 21), is connected to said electromagnetic device (405 to 408) preferably employed as its actuator, by a spring (412) acting to bias said pin (411) towards an end position determined by a stop member (410) adapted to be entrained by said actuator.

13. An antitheft device according to claim 12, characterized in that said stop member (410) is formed by a sleeve or bushing (410) supported in a slide member acting as said armature (408) of said electromagnetic device (405 to 408).

14. An antitheft device according to any of claims 1 to 6, characterized in that said locking member (411) is coupled to a display device having a display member disposed adjacent a viewing window (413) of said jaw assembly in one of the two stable positions of said locking component (100, 100′).

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