EP2762210B1 - Heel binding with roll-shaped sole holder - Google Patents

Description

The invention relates to a heel holder for a ski binding with a base plate with which the heel holder can be mounted on a ski or snowboard, a connection structure which can be connected to the base plate and a tensioning device, with which a ski boot is stretched onto the ski or the snowboard. The tensioning device comprises a horizontal pivot axis, wherein the tensioning device is pivotally connected or can be connected to the connecting structure in the pivot joint. The tensioning device has a sole holder on which, in direct contact with a ski boot sole, the ski boot stretches onto the ski and, with a transverse release of the binding, supports the release movement of the ski boot.

The FR 2 217 041 A1 relates to a heel holder for a ski binding having a roller body. The reel body pushes on a free surface of the ski boot sole and secures the ski boot for a descent on the ski. An axis of rotation of the reel body is parallel to the ski surface, facilitating entry and exit from the binding. The FR 2 195 467 A1 relates to a ski binding device for selectively holding the ski liftable binding parts. The device includes a sole retainer with multiple rollers to facilitate entry into the binding. The rollers have parallel axes of rotation that are all parallel and transverse to the ski surface. The FR 2 909 564 A1 concerns only a toe holder of a ski binding. The toe holder has two sole holders with integrated reel bodies. The roller bodies rest on the side of the ski boot sole.

It is an object of the invention to provide a heel holder which reliably causes a transverse release of the heel holder when a preferably adjustable transverse release force is exceeded. Another object is to provide a ski or snowboard with a safety binding with the heel holder.

These objects are achieved by claims 1 and 8.

The invention according to claim 1 relates to a heel holder for a ski binding with a base plate with which the heel holder can be connected to the surface of a ski or snowboard, a connecting structure which can be connected to the base plate and a tensioning device with which a ski boot is stretched onto the ski becomes.

The base plate is a basic structure that can be fixedly connected to the ski or connected, for example integrated into the ski surface. The base structure can be made in one piece and used to connect a toe holder and the heel holder to the ski. The base structure may alternatively comprise at least two parts, one connecting the toe holder and another the heel holder to the ski.

The connection structure comprises a first connection structure part and a second connection structure part, wherein the first connection structure part is movable in a transverse release of the ski binding relative to the second connection structure part in the direction of transverse release. The first connection structure part can be translationally movable, transversely displaceable, or preferably rotationally pivoted relative to the second connection structure part, ie be rotatable or pivotable. In this case, a guideway or link can be formed on or in the second connection structure part, which determines the degree of freedom of the relative movement between the two connection structure parts. For example, the guide track may be formed in such a way that the first connection structure part is simultaneously moved away from the ski surface during the relative movement to the first connection structure part.

The tensioning device comprises a sole holder in the form of at least one rolling body, which in direct contact with a ski boot sole stretches a ski boot onto the ski or snowboard, the at least one rolling body having an axis of rotation and being connected to the tensioning device so as to be about its axis of rotation can turn.

The axis of rotation of the rolling body can be perpendicular to the ski surface or at an angle greater than 0 ° and less than 90 °. The axis of rotation is at an acute angle to the ski surface, wherein the angle is inclined towards a rear end of the ski boot, whereby a force triangle acting on the ski boot sole is formed, with a large Force vector pushing the ski boot towards the ski surface and a smaller force vector pushing the ski boot in the ski direction.

To keep the ski boot in the riding position on a snowboard or a downhill ski or a combined touring and touring ski, the tensioning device tensions the ski boot onto the ski or snowboard. In order to reduce the risk of a complicated fracture, safety bonds can provide a transverse release of the bond when a preferably predetermined transverse force is exceeded. In order to reliably ensure the transverse release in the case of the preferably adjustable transverse release force, the heel holder has a sole holder in the form of a rolling body, which is connected to the tensioning device so that the sole holder or the rolling body rotate about its central axis of rotation in the state connected to the tensioning device can and thereby rolls in case of transverse release of the heel holder on the ski boot brine.

The heel holder may further comprise a tread plate which is formed as a slide plate and is movable in a direction transverse to the longitudinal direction of the ski binding so that it can move in the triggering direction in the event of transverse release of the binding.

The sole holder is formed by at least one rolling body, preferably the sole holder is formed by two or more rolling bodies, each of which is individually connected rotatably about its axis of rotation with the clamping device body.

For accommodating the rolling body forming the sole holder, the tensioning device body may have fork-shaped receiving arms, wherein the rolling body or bodies forming the sole holder is / are preferably arranged between the upper and lower receiving arms of the tensioning device body.

The rolling body, which in the following stands representative of the sole holder, can have a rotationally symmetrical shape, eg the shape of a roll, barrel, disk, ball or partial sphere, or comprise a body with such a geometric shape. The rolling body may comprise a ball, barrel or needle bearing with a rotatable outer ring or at least partially formed by parts of such a bearing or by such a camp itself.

If the rolling body itself formed as a pivot bearing, the rolling body may have a bearing center body which is rotatably connected to the clamping device or the receiving arm or the upper receiving arm and the lower receiving arm and having a rotatable outer ring or race, the bearing center body at a direction transverse to the direction of rotation surrounds the rolling body facing flank. The bearing bodies forming balls, tons or needles are trapped between a flank outer side of the bearing center body and an inner side of the race and form together with the race and the bearing center body the rolling body or the sole holder.

Alternatively, the rolling body may be mounted on a shaft which projects through the upper receiving arm and the lower receiving arm and the rolling body, wherein the bearing is formed in this case between the shaft and the rolling body in the region of the passage of the shaft through the rolling body, so that the Rolling body can rotate around the shaft. In order to prevent that the rolling body is applied directly to the upper and / or lower receiving arm, spacers may be arranged between the upper and lower receiving arm and the upper or lower side of the rolling body, which allow a free rotation of the rolling body around the shaft, without hindering the free rotation by frictional forces at the contact points between the lower and upper receiving arms and the upper and lower sides of the rolling body. The spacer may have a spring element, so that the rolling body can tilt slightly and / or can move slightly up or down. As a result, when driving a damping effect in the transmission of shock acting on the ski can be achieved on the ski boot.

The rolling body or the running ring or the sole holder may have a coating or a sheath made of a plastic or a light metal. The material is preferably chosen so that a frictional resistance between the ski sole and the cover or the sheath is reduced, so that in a transverse release of the binding in which the rolling body or the outer ring with / without coating or sheathing on and / or on the ski boot sole unwinds, the set transverse release force of the binding by the omitted or at least reduced friction between the rolling body and the ski boot sole essentially corresponds to the actual transverse release force occurring.

The coating or the casing may also have elastic properties, so that the rolling body or the coating or the casing optimally to a surface the ski boot sole in the area in which the rolling body biases the ski boot on the ski can adjust. These elastic properties should not counteract the positive effect of unrolling the sole holder on the ski boot sole and the resulting reduced friction.

A tensioner for a ski boot holder, preferably a heel holder of a combined touring and touring binding or a pure downhill binding, may comprise a connecting element for connecting the sole holder to the tensioning device or a receiving arm of the tensioning device, wherein the sole holder or the connecting element is a ball, barrel or Includes needle bearing, so that the sole holder can rotate about the connecting element or a race of the sole holder can rotate about a rotatably connected to the connecting element center body of the sole holder. The sole holder is preferably the rolling body already described above.

A sole holder for a ski holding member may be prepared to be connected to a sole holder of the ski holding member, preferably a heel holder of a ski binding. The sole holder includes a ball, barrel or needle bearing so that the sole holder can rotate about a connectable with the tensioner body connecting element. Alternatively, the sole holder itself forms a pivot bearing with a bearing center body, which is rotatably connected to a connecting element and a race that forms the transverse to the axis of rotation of the rolling body facing edge of the sole holder and can rotate around the bearing center body. Preferably, the sole holder is the above-described rolling body.

The invention comprises according to claim 8 a ski with a heel holder with the sole holder described above.

Figur 1

Fersenbindung mit erfindungsgemäßen Sohlenhalter in perspektivischer Ansicht

Figur 2

Explosionszeichnung einer Spannvorrichtung mit erfindungsgemäßem Sohlenhalter

Figur 3

Skizze mit einem Sohlenhalter im Halteeingriff an einer Skischuhsohle

In the following, an embodiment will be explained in more detail with reference to figures. The invention is not limited to the embodiment shown. Features which are essential to the invention and feature combinations which can only be seen in the figures are included in the scope of the invention and can advantageously be developed individually or in the combinations shown. The figures show in detail:

FIG. 1

Heel binding with sole holder according to the invention in a perspective view

FIG. 2

Exploded view of a clamping device with inventive sole holder

FIG. 3

Sketch with a sole holder in holding engagement on a ski boot sole

The FIG. 1 shows an embodiment of a heel holder 1 of a ski binding with a base plate which can be firmly connected to the ski and determines the position of the heel holder on the ski and relative to a toe holder, not shown.

The heel holder 1 has a connection structure 3 which is connected to the base and a tensioning device 4 with a tensioning device body 4a. On the tensioning device 4, two climbing aids 7, 8 are fixed, the tensioning device 4 is pivotally connected to the connection structure 3 in a pivot axis 9.

The connection structure 3 has a first connection structure part 3a and a second connection structure part 3b, which are pivotally connected to one another about the axis A3, so that when large side forces occur, the binding or the heel holder 1 changes the ski boot by pivoting the connection structure part 3a relative to the connection structure part 3b can release the pivot axis A3. To set the release force of the transverse release, the heel holder 1 on a non-visible release device, the release force is given by a gate 12 with.

The tensioning device 4 comprises a sole holder 5, which in the exemplary embodiment consists of two partial-bottom holders 5a and 5b. Each of the sub-sole holders 5a, 5b is formed as a rolling body 5a, 5b in the form of a roll or disc, and is supported in receiving arms 15, 16 formed by the tensioner body 4a.

The FIG. 2 shows the structure of the sole holder 5 of the heel holder 1 of FIG. 1 in detail. Shown is the tensioner body 4a in an enlargement. At its front end in the skiing direction, the tensioning device body 4a has a sole holder 5, which consists of two partial-bottom holders 5a, 5b. Each Teilohlenhalter 5a, 5b is mounted in a receiving arm 15, 16, which in the embodiment in one piece with the skeletal tensioning device body 4a is formed. The pickup arm 15, 16 has in the example an upper pickup arm 15o, 16o and a lower pickup arm 15u, 16u.

At the end remote from the tensioner body 4a, the upper receiving arms 15o, 16o and the lower receiving arms 15u, 16u each have a bore, preferably a through bore, into which a pin 10 can be inserted from above. Below the upper receiving arm 15o, 16o, a spacer 13 can be seen, which can also be penetrated by the pin 10. The spacer is formed in the embodiment as a spring element 13 or comprises at least one spring element 13. An identical spacer may also be provided above the lower receiving arm 15u, 16u, is in the FIG. 2 but not to see. The pin 10 also passes through the rolling body 5a, 5b and holds it in the in the FIG. 1 shown position between the upper pickup arm 15o, 16o and the lower pickup arm 15u, 16u.

In the exemplary embodiment, the rolling body 5a, 5b is a disk-like body which, when installed, can rotate around its axis of rotation A1 or A2 and can roll on the ski boot sole when the heel holder 1 is triggered sideways, whereby a friction resistance between the ski boot sole and the sole holder 5 is at least reduced in the transverse release.

In order for the rolling body 5a, 5b to be able to rotate about its axis of rotation A1, A2, the pin 10 or the rolling body 5a, 5b can, in the region of the passage of the pin 10 through the rolling body 5a, 5b, have a rotary bearing, e.g. have a ball, barrel or needle roller bearings. The pivot bearing is e.g. formed on or in the rolling body 5a, 5b on the inner circumference of the passage opening or on the pin 10 on the outer circumference in the region of the passage of the pin 10 through the rolling body 5a, 5b.

Alternatively, the rolling body 5a, 5b may also include a bearing center body 5a1, 5b1 and a race 5a2, 5b2 which is captively connected to the bearing center body 5a1, 5b1 and forms the outer circumference of the rolling body 5a, 5b. In this alternative embodiment, the bearing center body 5a1, 5b1 is connected to the pin 10 so that the bearing center body 5a1, 5b1 can not rotate about the rotation axis A1, A2 relative to the pin 10. The rotation about the axis of rotation A1, A2 takes place in this embodiment between the stationary bearing center body 5a1, 5b1 and that about the bearing center body 5a1, 5b1 rotatable race 5a2, 5b2 instead. In this alternative embodiment, the pin 10 can only intervene in the bearing center body 5a1, 5b1, he does not have to pass through it. Also can be dispensed with the lower receiving arm 15u, 16u and on the spacer or the 13, which can lead to a reduction in weight and cost, especially when using the heel holder 1 in childbinding.

The result of the described alternative embodiments is identical, in all cases the rolling body 5a, 5b can roll on a transverse release of the ski binding or the heel holder 1 on the shoe sole.

The rolling body 5a, 5b may have a casing 14 which is made of a material which further reduces rolling resistance between the rolling body 5a, 5b and the ski boot sole and / or is elastic in order to optimally adapt to a shape of the ski boot sole in the area of engagement. This material can be a plastic or a light metal.

The sheath 14 may be connected to the rolling body 5a, 5b so that the sheath 14 can be easily replaced by the user. So the user can e.g. the color or the design of the sheath 14 arbitrarily select and change the visual appearance of the heel holder 1 by exchange.

The FIG. 3 shows a sketch of a sole holder 5 in holding engagement with the rear end of a ski boot sole. The axis of rotation A1 is at an acute angle α to the ski surface. In the exemplary embodiment shown, the rolling body 5a has a supporting region 5c, with which it rests flat on the ski boot sole in the holding position shown. Thereby, a force triangle is formed, with a force vector V1, which represents the force with which the ski boot is pressed onto the ski surface, and a force vector V2, which represents the force with which the ski boot is pressed in the running direction of the ski. At an acute angle α, the force vector V1 is always larger than the force vector V2.

LIST OF REFERENCE NUMBERS

1

Fersenhalter

2

---

3

connecting structure

3a

Connection structure portion

3b

Connection structure portion

4

jig

4a

Chuck body

5

sole holder

5a

Teilohlenhalter, Abrollkörper

5a1

Storage center body

5a2

race

5b

Teilohlenhalter, Abrollkörper

5b1

Storage center body

5b2

race

5c

support area

6

---

7

climbing aid

8th

climbing aid

9

swivel axis

10

pen

11

---

12

scenery

13

Spacer, spring element

14

jacket

15

pickup

15o

upper pick-up arm

15u

lower pickup arm

16

pickup

16o

upper pick-up arm

16u

lower pickup arm

A1

axis of rotation

A2

axis of rotation

A3

swivel axis

V1

vector

V2

vector

α

angle

Claims (8)

1. A heel retainer for a ski binding, comprising:

   a base plate using which the heel retainer (1) can be fastened to an upper side of a ski or snowboard;

   a connecting structure (3) which can be connected to the base plate; and

   a tensioning device (4) using which a ski boot is tensioned onto the ski, wherein

   the connecting structure (3) comprises a first connecting structure part (3a) and a second connecting structure part (3b), and the first connecting structure part (3a) can be moved relative to the second connecting structure part (3b) in the transverse release direction when the ski binding is transversely released, and

   the tensioning device (4) comprises a sole retainer (5) which, in direct contact with the sole of a ski boot, tensions the ski boot towards the ski or snowboard,

   wherein the sole retainer (5) is formed as a rolling body (5a, 5b) exhibiting a rotational axis (A1, A2) and is connected to the tensioning device (4) such that the sole retainer (5) can be rotated about its rotational axis (A1, A2),
   characterised in that
   the rotational axis (A1, A2) is at an acute angle to the surface of the ski.
2. The heel retainer according to Claim 1, wherein the sole retainer (5) comprises at least two rolling bodies (5a, 5b) which together form the sole retainer (5).
3. The heel retainer according to the preceding claim, wherein the sole retainer (5) has a rotationally symmetrical shape, for example the shape of a roller, disc, sphere or partial sphere.
4. The heel retainer according to any one of the preceding claims, wherein a rotary bearing for the sole retainer (5) is a spherical bearing, barrel-shaped bearing or needle bearing.
5. The heel retainer according to any one of the preceding claims, wherein the sole retainer (5) itself forms a rotary bearing comprising a central body (5a1, 5b1) of the bearing which is non-rotationally connected to the tensioning device (4) and a race (5a2, 5b2) which forms the flank of the sole retainer (5) which points transverse to the rotational axis (A1, A2) and can be rotated about the central body (5a1, 5b1) of the bearing.
6. The heel retainer according to any one of Claims 1 to 4, wherein the sole retainer (5) is connected to the tensioning device (4) by a pin (10) which protrudes through the sole retainer (5) in a central opening, and a rotary bearing is formed between the pin (10) and the inner surface of the central opening of the sole retainer (5).
7. The heel retainer according to any one of the preceding claims, wherein the sole retainer (5) or the race (5a2, 5b2) of the sole retainer (5) comprises a coating or sheathing made of plastic or light metal.
8. A ski or snowboard comprising a safety binding, wherein the safety binding comprises a heel retainer (1) which includes a sole retainer (5) according to any one of Claims 1 to 7.

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