EP0561387A1 - Snowboard binding - Google Patents

Abstract

A description is given of a snowboard binding having a front binding (20) and rear binding (21), in the manner of a turntable arrangement, on a snowboard (19), in each case a sole plate on the boots of the user being in engagement with a front and rear turntable of the snowboard (19) and a release and locking device (22) being provided between the turntables for the common release and locking, respectively, of the sole plates. In order to provide a cost-effective and operationally reliable locking and release device, which is furthermore protected against the penetration of snow, ice and water and the like, the invention provides that there is arranged, on each turntable of the front binding and rear binding, a pivotable clamping ring (48) which, when the binding is released, pivots via a lever linkage as a result of the movement of a latching bolt (29). For the release and locking, respectively, of the binding, the respective clamping ring is connected, via a Bowden cable (24, 25), to the release and locking device and, starting from each turntable, a pulling cable (12, 12a) acts on synchronous pivot levers, a common latching bolt (3) connecting the pivot levers to one another for the purpose of opening or closing the binding. <IMAGE>

Description

The present invention relates to a snowboard binding, as has become known for example with the subject of DE-GM 90 14 833.

In this known safety binding for snowboards there is the problem that a front and a rear binding are mounted on a snowboard and that the ski boot of the driver is connected to a sole plate, which sole plate is in locking engagement with the front and rear binding.
It has now been found that it is disadvantageous in the known snowboard binding that when the front binding is triggered, for example, the rear binding does not or only triggers with a delay. In this known snowboard binding, a connecting rod between the front binding and the rear binding was provided for the synchronous triggering of the locking and triggering device, which connecting rod acts on a common locking and triggering device. However, the use of a rigid connecting rod has proven to be disadvantageous because the twisting of the snowboard has also twisted the connecting rods accordingly, which has an adverse effect on the locking and releasing device. In addition, the known locking and release device had the disadvantage that there was no safeguard against unintentional closure of a binding once triggered, so that it could happen that when the front binding was triggered, for example, the rear binding also triggered, but that - provided the sole plate is off the rear binding was not released, the rear binding then closed again and connected the sole plate to the snowboard in an undesirable manner, which was associated with a high risk of accident for the driver's foot held in the rear binding.

So far, however, no functioning solution for realizing such a locking and triggering device has been known, which ensures a practical and inexpensive manufacture of such a locking and triggering device.

For the rest, the disadvantage of the previously known snowboard bindings was that the essential parts of the locking and releasing device were exposed and were therefore at great risk against icing or clogging by snow, which impaired safety.

The present invention is therefore based on the object of developing a snowboard binding of the type mentioned in such a way that an inexpensive and reliable locking and release device is created which is protected against the ingress of snow, ice and water.

To achieve the object, the invention is characterized by the technical teaching of claim 1.

An essential feature of the invention is that, starting from a tension ring arranged rotatably in the front and rear binding, a cable opens into the locking and triggering device according to the innovation, and that each cable is assigned its own latching action on a swivel lever connecting the two cables, which Swivel lever forms a common catch with a common opening lever.

This has the essential advantage that when the one cable is latched on the common pivot lever mentioned, the latch for the other cable is also triggered, because this cable pulls on the common pivot lever with its latching and that the two cables are thus triggered when the trigger a latch together and release the sole plate arranged in the front and rear binding from its latching with this binding.

So there is the essential advantage that the two release mechanisms in the new locking and release device are synchronized together, so that when one binding, e.g. the front tie, also the rear tie is triggered.

In a further development of the present invention, a lock against unintentional reclosing of the front and rear binding is provided in such a way that the latching device, once triggered, is locked in an open position and can only be brought out of this locked open position by manual actuation of the pivot lever into the closed position can.

This ensures that once a security binding is triggered, one of the bindings or even both bindings are inadvertently closed again.

The use of cable pulls (wire ropes) has the significant advantage that there is no need for push rods and connecting rods that are prone to twisting, and that such wire pulls are protected against twisting of the board in the field, because these wire pulls are laid in the area of loosely laid Bowden cables, which Bowden cables are laid on the snowboard with a large amount of movement so that even twisting of the snowboard does not influence the wire rope laid in the bowden cable.

With the use of Bowden cables, in which the aforementioned wire cables are guided in a longitudinally displaceable manner, there is the further advantage that the Bowden cables can be inserted sealingly on the locking and release device arranged in the middle between the front and rear binding, so that the entire Locking and triggering device can be encapsulated and can be protected against unprofessional opening by means of test seals, seals and the like.

This means that the entire locking and triggering device can be completely sealed and protected against the ingress of snow, water and ice.

Another advantage of the locking and releasing device according to the invention is that relatively inexpensive stamped and bent parts can be used and that costly castings can be dispensed with.

The subject matter of the present invention results not only from the subject matter of the individual patent claims, but also from the combination of the individual patent claims with one another.
All information and features disclosed in the documents - including the summary -, in particular the spatial design shown in the drawings, are claimed to be essential to the invention insofar as they are new to the prior art, individually or in combination.

The invention is explained in more detail below with the aid of drawings which illustrate only one embodiment. Further essential features and advantages of the invention emerge from the drawings and their description.

Figur 1:

schematisiert in Draufsicht ein Snowboard mit Vorder- und Hinterbindung,

Figur 2:

die Seitenansicht der Figur 1,

Figur 3:

die Seitenansicht eines Rastringes,

Figur 4:

ein anderes Ausführungsbeispiel eines Rastringes,

Figur 5:

schematisiert ein Schnitt durch die Rastaufnahme im Bereich der Bindung,

Figur 6:

schematisiert der Schnitt wie Figur 5 mit Darstellung weiterer Einzelheiten,

Figur 7:

ein Schnitt und eine Draufsicht durch eine neuerungsgemässe Sperr- und Auslösevorrichtung,

Figur 8:

den Schnitt gemäss der Linie VIII-VIII in Figur 7,

Figur 9 bis 15:

eine Schnittdarstellung, ähnlich wie Figur 8, mit zeitlicher Darstellung der Auslösung,

Figur 16 bis 18:

eine Draufsicht auf eine Bindung mit zeitlicher Darstellung des Auslösevorgangs.

Show it:

Figure 1:

schematized in top view a snowboard with front and rear binding,

Figure 2:

the side view of Figure 1,

Figure 3:

the side view of a locking ring,

Figure 4:

another embodiment of a locking ring,

Figure 5:

schematically shows a section through the catch in the area of the binding,

Figure 6:

the section like FIG. 5 schematically shows further details,

Figure 7:

2 shows a section and a top view through a locking and release device according to the innovation,

Figure 8:

the section along the line VIII-VIII in Figure 7,

Figure 9 to 15:

8 shows a sectional illustration, similar to FIG. 8, with a time representation of the triggering,

Figure 16 to 18:

a plan view of a binding with time representation of the triggering process.

A snowboard 19 is shown schematically in FIGS. 1 and 2, which has a front binding 20 and a rear binding 21 in a manner known per se. A locking and release device 22 is located between the two bindings 20, 21. The triggering processes between the bindings 20, 21 are synchronized here via Bowden cables 24, 25, with a Bowden cable 24, 25 starting and coming from a binding 20, 21 one side of the locking and triggering device 22 opens.

For the sake of better drawing, the bindings 20, 21 are shown in FIG. 1 and 2 with the sole plate 22 removed, in order to show the inner locking ring 23 and to show that the locking ring 23 is surrounded on its outer circumference by a fixed retaining ring 27, which in turn is attached to its outer circumference is surrounded by a rotatably mounted clamping ring 48.

In Figures 3 and 4 locking rings 23 are shown schematically, the are connected in a manner not shown to a sole plate 26 of a ski boot. In a manner known per se, each locking ring 23 has on its outer circumference a series of locking recesses 36, in which spring-loaded locking bolts 29 engage in assigned locking recesses 36 in the region of the locking ring 23.

The locking ring 23 can either have evenly distributed locking recesses 36 on the circumference according to FIG. 3; however, it can also be designed as a locking ring 23a, which has a locking groove 52 on the circumference into which the spring-loaded locking bolts 29 engage.

It is important that the outer circumference of the entire locking ring is designed as a spherical body 30, which is shown completely in FIG. 6 for better clarification, the locking ring 23 itself corresponding only to the part which is shown in solid lines in FIG. 6.

The design of the outer circumference of the locking ring 23 as a spherical body 30 has the advantage that it can move freely in the region of the recess 28 in the manner of a spherical shell without jamming. Thus the triggering behavior of the locking ring in the area of the associated recess 28 is significantly improved in all directions.

FIGS. 7 and 8 show details of the locking and unlocking device 22 according to the innovation. The lower illustration in FIG. 7 corresponds to a top view of the lower half of the locking and triggering device 22, while the half section shown in FIG. 7 above represents a section along the line VII-VII in FIG. 8.

The right part of the locking and triggering device is shown here.

The distinction between right and left part of the locking and triggering device 22 is important for the further description, because it can be seen from Figure 1 that the Bowden cable 24 coming from the front binding 20 opens into the upper part of the locking and triggering device while the Bowden cable 25, which is guided from the rear binding 21, is inserted into the lower part of the locking and triggering device 22.

The function of the locking and triggering device 22 is described below for the application when a trigger cable acts in the direction of arrow 51 on the wire cable 12a associated with the front Bowden cable 24.

The wire rope 12a is sealingly passed through a housing, not shown, and is fastened to its clamping part 9. This clamping part 9 is firmly connected to a spring element 6, which spring element 6 is pivotally mounted in the area of a bearing pin 10, which bearing pin 10 passes through a pivot bearing 7, which is pivotally mounted in the area of a pivot bearing pin 11 fixed to the housing.

The spring element 6 carries on its rear part an adjusting screw 8, which is held in the spring element 6 with a corresponding thread adjustable in length. The adjusting screw 8 forms a rear stop for a compression spring 5, the front end of which is supported on a guide part 4 which is displaceably guided in the spring element 6.

In the region of the guide part 4, a spring element bearing pin 14 is arranged, which is arranged on the pivotable part of a pivot lever 2.

The pivot lever 2 is pivotally mounted about a pivot lever bearing pin 18 fixed to the housing.

To the same bearing pin 10, which in the pivotable part of the Pivot bearing 7 is received, the rear end of a push rod 13 is also pivotally mounted, which has an elongated hole 32 in its front part, which is aligned with its longitudinal axis parallel to the longitudinal axis of the push rod 13.

In the slot 32 of the push rod 13 engages a locking pin 3, which is firmly connected to an opening lever 1. The opening lever 1 is pivotally mounted about an opening lever bearing pin 16 which is fixed to the housing.

In the closed state, one spring leg of a leg spring 15 rests under spring load on the latching bolt 3 and presses it into a recess 34 which is embedded in a side shoulder in the pivot lever 2. The mentioned recess 34 serves to fix the closed position of the ski binding, so that the locking pin 3 is in locking engagement with the recess 34.

The other leg of the leg spring 15 is supported on a surface fixed to the housing.

This leg spring forms a spring load for the opening lever 1 in order to keep it spring-loaded in its closed position.

There is a second leg spring 17 which is supported with one leg end on the inside of the pivot lever 2 and with its other leg end rests on a surface fixed to the housing. This leg spring 17 ensures that the pivot lever 2 is held in its open position when the binding is open, the latching bolt 3 being in the region of a recess 35 in the open position. This prevents a transition to the closed position unintentionally when the binding is open, i.e. the pivot lever 2 is held in the open position by the leg spring 17.

If a train acting in the direction of arrow 51 on the wire rope 12 or 12a generated, then this train is exerted on the spring element 6 via the clamping part 9. Characterized in that the clamping part 9 is held at a distance from the bearing pin 10, there is a pivoting of the pivot bearing 7 in the arrow direction 53 around the pivot bearing pin 11 and the bearing pin 10 and the push rod 13 attached to it move in the arrow direction 51 to the left. Because the guide member 4 is firmly connected to the locked pivot lever 2 in the area of the spring element bearing pin 14, the compression spring 5 is tensioned even more when the spring element 6 moves, and thereby the push rod 13 moves in the area of its elongated hole 32 against the locking pin 3 because this push rod is attached to the bearing bolt 10 moving to the left.

As a result, the rear shoulder 33 of the elongated hole 32 comes into contact with the latching bolt 3 and pushes it out of the region of the latching recess 34.

It is now important that the locking pin 3 is connected over the entire width of the locking and release device 22 to the opening lever 1 connecting the two release parts, so that this ensures that the locking connection assigned to the other wire cable 12, which is otherwise of the same design, as shown in Figure 8 with respect to the wire rope 12a, triggers and now trigger the two wire ropes synchronously in the arrow directions 51.
When triggered, the locking bolt 3, which extends over the entire width of the device, disengages from the locking recess 34, which is assigned, for example, to the upper part of the locking and triggering device 22, also simultaneously triggers the other locking, for example, assigned to the wire cable 12.

It is essential that both the opening lever 1 is assigned to the common detent, as well as the pivot lever 2 and the associated latching pin 3.

The synchronicity between the two wire cables 12, 12a is thus established.

The actual pull on the wire rope (release or spring loading of the locking bolts 29) takes place through the spring force of the respective compression spring 5. This can be adjusted individually by means of an adjusting screw 8, which can be screwed more or less into the spring element 6.

The adjusting screw 8 can be adjusted with a hexagon 31 arranged at the rear end.

FIGS. 9 to 15 show the individual triggering processes again in chronological order in order to better illustrate the triggering process described above.

It can be seen from FIG. 9 that the latching bolt 3 is initially in engagement with the latching recess 34 and that the elongated hole 32 does not yet touch the latching bolt 3 with its rear shoulder 33. This means that the binding is in the closed or locked position.

If a release pull is now triggered in the direction of arrow 51 on the wire rope 12a, then the pivot bearing 7 pivots about its pivot bearing pin 11 and thus takes the bearing pin 10 with it.

At the same time, the spring element 6 is moved to the left in the direction of the arrow 53 and the push rod 13 rests on the latching bolt 3 with its elongated hole 32 and the rear shoulder 33.

As a result, the locking pin 3 is pressed out of the locking recess 34, as a result of which the opening lever 1 according to FIG. 11 pivots counterclockwise around the opening lever bearing pin 16.

According to FIG. 12, the locking pin 3 now overcomes a shoulder 54 in the Transition area between the latching recess 34 and the latching recesses 35 and, according to FIGS. 13, 14 and 15, reaches the area of the latching recess 35 assigned to the open position. According to FIGS. 13 and 14, the pivot lever 2 now begins to pivot in the direction of the arrow 55 in the direction of the arrow 55, so that the locking pin 3 comes completely into the region of the locking recess 35 assigned to the open position.

15, the locking pin 3 is secured in the locking recess 35 and cannot inadvertently return to the closed position in the region of the locking recess 34.

Only when you press the plates 56 of the pivot lever 2 by finger pressure and move it in the opposite direction to the direction of the arrow 55, can the locking bolt 3 be brought out of the recess 35 by overcoming the shoulder 54 into the region of the recess 34 associated with the closed position.

This takes place against the spring force of the leg spring 17 and also by overcoming the spring force on the part of the compression spring 5.

It is also important that - when the binding is closed and the locking bolt 3 is located in the region of the locking recess 34, this binding can be opened by pressing on the plates 57 of the opening lever 1. You don't need a pulling force here that would require laborious opening.

In order to tightly encapsulate the entire locking and triggering device 22, it is provided that a housing enclosing the entire device is provided, the upper surface of the housing being designed as a plastic film, through which the opening lever 1 and the Can operate lever 2. The characteristics of a membrane keyboard are thus achieved, whereby the pivoting movements of parts 1 and 2 can be accomplished through the membrane with the housing closed.

The latching connection in the region of the binding 20, 21 is explained in more detail below with reference to FIGS. 16-18.

As can be seen from FIG. 16, the binding is essentially formed by a locking ring 23 which has locking recesses 36 arranged uniformly distributed on the circumference.

Radially inwardly directed locking bolts 29 engage in these locking recesses and are displaceably mounted in a retaining ring 27 which surrounds the locking ring radially on the outside. At its rear end, each locking bolt 29 has an adjusting screw 37, with which the locking engagement of each locking bolt into the associated locking recess 36 can be set individually.

The free, pivotable part of a lever 38 bears against the rear end of the locking pin 29 and is pivotally mounted about an axis 39 in the region of a rotatably mounted clamping ring 48.

The other end of the lever 38 is provided with an elongated hole 42 through which a bolt 43 engages, which is part of a bell crank 40. According to the drawing, the elongated hole is arranged in the bell crank 40. The bell crank 40 is triangular in shape and is connected to the retaining ring 27 so as to be rotatable about an axis 41.

The deflection lever 40 carries at a distance from the aforementioned bolt 43 and from the axis 41 a further bolt 44 which pivotally receives one end of a lever 45, the other end of which is pivotably mounted in an axis 46 in the clamping ring 48.

The lever transmission described from the locking bolt 29 to the rotatably mounted clamping ring 48 has the purpose of translating the relatively small displacement path of the locking bolt 29 into a relatively large displacement (direction of rotation) of the clamping ring 48.

This ensures that the respective cable 12, 12a is assigned a large displacement path, so that the entire locking and triggering device has a safe sequence with large displacement paths. This is a significant advantage over known locking and release devices, where only small displacement paths are provided.

The lever device mentioned thus offers the essential advantage that a reliable operation is achieved.

When the binding is released, the locking pin 29, which engages with an assigned shoulder 47 in the locking recess 36, is moved radially outward and presses on the free, pivotable end of the lever 39. This is pivoted counterclockwise about its axis 39 and thus moves the triangular shaped lever 40 about its axis 41.

The design of the deflection lever 40 as a triangular link thus results in the linkage being stretched during the transition from FIG. 16 to FIG. 18, so that the entire clamping ring 48 in the direction of arrow 49 by a relatively large displacement path of e.g. Is moved 7 mm. This results in a lever ratio of approximately 1: 3 with respect to the displacement of the locking pin in comparison to the displacement of the clamping ring 48.

The cable 12 is thus also moved by approximately 7 mm, and the locking and triggering device 22 mentioned and described above is reliably actuated.

The respective cable (wire rope 12, 12a) is pivotally attached to the tension ring 48 in a holder 50.

DRAWING LEGEND

Pos. 1

Opening lever

Pos. 2

Swivel lever

Pos. 3

Locking bolt

Pos. 4

Guide part

Pos. 5

Compression spring

Pos. 6

Spring element

Pos. 7

Swivel bearing

Pos. 8

Adjusting screw

Pos. 9

Clamping part

Pos. 10

Bearing bolt

Pos. 11

Pivot pin

Pos. 12

Wire rope (rear)

Pos.12a

Wire rope (front)

Pos. 13

Push rod

Pos. 14

Spring element bearing pin

Pos. 15

Leg spring

Pos. 16

Opening lever bearing pin

Item 17

Leg spring

Pos. 18

Swivel lever bearing pin

Pos. 19

Snowboard

Pos. 20

Front tie

Item 21

Hind tie

Pos. 22

Locking and triggering device

Item 23

Locking ring

Item 23a

Locking ring

Item 24

Bowden cable (rear)

Item 25

Bowden cable (front)

Item 26

Sole plate

Item 27

Retaining ring

Item 28

Recess

Item 29

Locking bolt

Pos. 30

Spherical body

Item 31

Hexagon

Item 32

Long hole

Item 33

shoulder

Item 34

Recess (for locking pin)

Item 35

Recess (for locking pin)

Pos. 36

Notch

Item 37

Set screw

Item 38

lever

Item 39

axis

Pos. 40

Bell crank

Item 41

axis

Pos. 42

Long hole

Pos. 43

bolt

Pos. 44

bolt

Pos. 45

lever

Pos. 46

axis

Pos. 47

shoulder

Pos. 48

Tension ring

Pos. 49

Arrow direction

Pos. 50

Retaining ring

Item 51

Arrow direction

Pos. 52

Locking groove

Pos. 53

Arrow direction

Item 54

shoulder

Pos. 55

Arrow direction

Item 56

area

Item 57

area

Item 58

cover

Pos. 59

flexible printing area

Claims (4)

Snowboard binding with a front and rear binding in the manner of a turntable arrangement on a snowboard, wherein a sole plate on the user's shoes is in engagement with a front and rear turntable of the snowboard and a trigger device between the turntables or in front or behind the two turntables are designed for the joint release or fixation of the sole plates, characterized in that a displaceable clamping ring (48) is arranged on each turntable of the front and rear binding (20, 21), which, when the binding is released, is moved by moving a locking bolt ( 29) is pivoted via a lever linkage, the respective clamping ring (48) being connected to the triggering device via a Bowden cable (24, 25) and each cable pull (12, 12a) being associated with its own latching on a respective pivot lever (2), wherein one or more swivel levers (2) ver with each other via a common locking pin (3) are bound. Snowboard binding according to claim 1, characterized in that the respective pivot lever (2) has an opening lever (1) projecting upwards. Snowboard binding according to claims 1 and 2, characterized in that the latching bolt (3) is guided on the respective pivot levers (2) in a respective recess (34, 35) for the closed or open position of the turntable. Snowboard binding according to claim 1, characterized in that the triggering device is synchronized with a locking device for closing the front or rear binding and the locking by manual actuation of a swivel lever (2) is lifted, the swivel pin (3) being swiveled in the recess (34, 35) of the swivel lever (2) by pressing on the opening lever (1).

Images