EP0068235A1 - Safety ski binding - Google Patents

Abstract

The safety ski binding has a detachable fastening of a ski boot (19) to the ski (20) with a front and a rear holder (30) which can be attached to the ski (20) and are equipped with an adjustable spring device (90), it being possible for the holders (30) and the ski boot (19) to be disengaged from each other when predetermined values of forces are exceeded. The spring device (90) is arranged in a flat housing (29) inside or below the sole of the ski boot (19) and it loads a bow-shaped profiled flat slide (31) which is arranged displaceably and non-rotatably in the longitudinal direction of the ski boot (19). The holders (30) are constructed as complementary concave profile blocks (25) for the slides (31) to receive the pressure forces. Thus no rotatable parts are required on the binding. The binding can be accommodated in a compact and flat manner in an otherwise unused hollow space in the sole of a ski boot (19) and the holders (25, 30) themselves are considerably flatter than in conventional shapes. <IMAGE>

Description

The invention relates to a safety ski binding, with a front and a rear holder for the detachable fastening of a ski boot to the ski, in which a spring-loaded latching device is arranged in a flat housing in or under the sole of the ski boot, the latching device for at least one spring-loaded slider Has latching with brackets attached to the ski.

Such a safety ski binding is known for example from DE-OS 27 39 208, spring-loaded pins being provided there, which are arranged in a plate under the ski boot or in the ski boot itself and can be brought into engagement with a holder in the form of a block with depressions that can be reached via guide ramps. In all of the specified embodiments, getting into the ski binding is only with a rotary movement of the ski boot possible, with the spring-loaded pins sliding along the guide ramps and then snapping into the recesses. Such a ski binding does not take into account the circumstances in practice, because when entering the ski binding the body weight of the user cannot be exploited by pressure from above due to the required rotational movement. Further shortcomings are that the entry into the binding must be done blindly, since the user covers the mounting block with his ski boot, and snow can sit unnoticed in the guide ramps. Particular difficulties arise, for. B. in loose deep snow or on a steep slope when getting into the binding, since the ski will dodge during the rotating movement of the ski boot and the user will have problems with balance. Even if a vertical pin may make it easier to get in, this will also be achieved by a significant reduction in the safety function of the binding, because with pure transverse loading the binding can no longer be triggered because the vertical pin gets stuck laterally in its complementary recess. In addition, the spring-loaded pins and their corresponding recesses allow only a slight side and height elasticity and therefore minimal resilience in the event of short-term impacts when skiing, due to the exact adjustment of the projection and recess. An increase in the diameter for the recesses would inevitably result in the ski fluttering in relation to the ski boot and making it impossible to control it.

The functionality of the binding according to DE-OS 27 39 208 is also questionable because the upper horizontal shoulders of the block for receiving the spring-loaded pins are exposed to very considerable vertical loads during operation, so that there is a risk of breakage at this point. There is also a large one Friction between the ski surface and the ski boot when entering or exiting the binding, especially when the ski boot is tilted when released. Furthermore, the bending behavior is adversely affected, since the ski binding leads to a stiffening of the arrangement in the region of the binding, which leads to false tripping when driving through troughs with strong ski deflection. Shocks cannot be dampened with such a binding because of the exact engagement of the pin and recess, so that the skier tired more quickly and his risk of injury increased.

Another safety ski binding describes DE-OS 27 02 963, which represents a combined touring and downhill safety ski binding, which has a large number of individual components and whose functionality is questionable for several reasons. The step frame tends to bend there and there is a risk that the flat nose receiving a displaceable web cannot absorb the occurring vertical forces without bending or even breaking off. In the binding, a spring device is attached to the ski itself, a rotatable holding body with downwardly tapering sloping surfaces being provided, which is gripped by a sloping surface of a slider, while the slider in turn sits in a plate, which in turn has a front-side roller over a Trough is engaged so that the plate can rotate in a horizontal plane. The plate itself accommodates the step frame, which can be hooked into the front of the plate and slid under the nose of the plate and attached to it via the hand-adjustable bridge. It is also necessary to attach the ski boot to the step frame with brackets using a sole hold-down. This means that no step-in entry into the binding is possible, rather parts have to be operated by hand. There is also a stiffening of the ski in the binding area and it is no length compensation possible when driving through troughs.

Even if the slider has an inclined surface there, this only serves to engage under its obliquely downward and rearward sloping surface of an inclined surface of the centrally arranged holding body, but it is only possible to insert the plate equipped with this slider by moving the inclined surfaces engages with each other and danIT-performs a rotary movement of the plate in a horizontal plane so that a latching path comes into engagement with an annular groove of a roller arranged in the front region of the ski binding. Similar to the arrangement described above, a rotary movement is required in order to bring two essential parts of the binding into engagement with one another, while getting into the ski binding from above according to DE-OS 27 02 963 by first engaging with the roller at the front produces, is excluded from the outset, because the slide can then no longer be brought into its position in which it engages under the holding body.

DE-OS 24 26 062 describes a release ski binding in which spring-loaded sliders can be built into the ski boot sole, which are overlapped at their ends by hook-like profiled counterparts on the ski, but this is a very special problem. In order to avoid the risk of injuries and, in particular, breaks, a joint system is provided there, which, when connected to the ski boot, is to ensure that the prestressing of spring-loaded parts depends on the template, reserve or the like of the skier. With greatly reduced spring preload in the template or reserve, triggering can be made easier at first glance, but in practice this inevitably leads to false tripping. B. in deep snow or in typical Ab the skier automatically goes into reserve. This means that the front locking elements are practically no longer spring-loaded, and even small loads can lead to a surprising release of the binding and create a considerable risk of falling and injury. Furthermore, there are no good reset and evasion possibilities either in the front or in the back in the horizontal or vertical direction, even if a certain swinging through in the vertical direction is possible in the middle region of the binding.

The safety ski binding according to DE-OS 26 00 899 is of the plate binding type, in which an inclined entry surface is provided on the front posture. The binding has a surface contact at the front between the plate and the front bracket and additionally a centering locking ball lock, while a pin locking bracket is provided at the rear. This means that there is no possibility of evasion and resetting in the horizontal and vertical directions, neither at the front nor at the rear, and the pin in the middle of the binding prevents the ski from swinging freely.

DE-OS 24 52 256 finally describes a safety ski binding in which spring-loaded assemblies are accommodated in the sole of the ski boot. The binding has stopping points so that the ski can swing freely through the binding area, but there are some shortcomings in practice. The double-pin arrangement of the binding results in a low degree of transverse stability and reset possibility, which on the one hand brings about undesirable false triggers, and on the other hand requires complex guides for the double-pin arrangement.

Starting from an arrangement of the type mentioned at the outset, the invention is based on the object of a bin to specify that, while maintaining a low overall height and the security of the binding, offers an improved adaptation behavior to vibrations and loads in operation, whereby reset options are guaranteed in all directions of release.

With the features in claim 1, the desired goal is achieved in a satisfactory manner. The binding according to the invention advantageously ensures that the complementary surfaces of the concave mounting groove and the convex slide allow a long-stroke triggering behavior in all triggering directions and thus offer a possibility of resetting on a relatively long triggering path, provided that the forces do not lead to the triggering of the binding. Furthermore, the curved line contact of the slider in the mounting groove ensures improved adaptation to vibrations and loads, because on the one hand the flexing of the ski is not impaired due to the existing distance between the ski surface and the binding, on the other hand shocks in the binding can be caused by the all-round, against spring force Mobility, also in the direction of the ski, between the bracket and slider can be damped.

With the features of claim 2, the line contact is improved and at the same time avoided that the front edge abuts against the holder only with two spaced outer points. The arrangement according to claim 3 facilitates entry into the ski binding by simple pressure from above.

Developments of the binding according to claims 4 to 7 ensure a limitation of the displacement of the slide in the longitudinal direction, so that it is securely held in the housing, acted upon by the springs and secured against falling out. Ensure the arrangement according to claim 8 provides good guidance when moving the slide in the longitudinal direction and prevents tilting in the housing.

The binding according to claim 9 represents a simple and effective arrangement, which ensures a uniform pressurization of the slide with a low overall height of the binding. The special embodiment according to claim 10 can be accommodated in an advantageous manner in the longitudinal central web on the sole of the ski boot, the actuator itself being operable from the outside to adjust the contact pressure of the springs on the slide, an elongated, slim design being possible .

The features according to claims 11 and 12 contribute to a compact design, the end plate with its slot expediently being flush with the central web on the sole of the ski boot and can have a marking in the form of numbers or the like on the circumference of the end plate mark the set degree of hardness of the spring device. A further development of this embodiment is specified in claim 13.

The binding with the features of claim 14 advantageously facilitates getting out of the binding by manual operation, for. B. after a fall, because the bracket can then be pushed back accordingly. In the folded-down position, however, the rocker arm forms a counter bearing for the mounting part, which in turn receives the slide of the ski binding. The interlocking gears or profiles ensure good guidance when moving the bracket part in the longitudinal direction. In the binding according to claim 15, a stop to limit movement z. B. be the plate of a ski brake.

The binding according to claim 16 ensures good guidance between the mounting part and the rocker arm when these two components are brought into engagement by simply pressing down the rocker arm on its front. The compact design is maintained since the rocker arm is partially accommodated in the bracket part. The features according to claim 17 ensure good sliding behavior of the rocker arm on the mounting part in order to bring these two parts into locking engagement. tT *

In the binding according to claim 18, the lower, steep inclined surface supports the latching of the locking edge in the locking groove, while the upper flat inclined surface in locking engagement with the locking groove prevents undesired release of the locking engagement. In addition, there is a smooth upper side in the locking engagement, so that it does not get caught with the binding. The rocker arm can be swiveled up to release the ski boot by pressing on the rear area of the rocker arm with your foot, hand or with a ski pole, and the hole also provides access to fastening screws located below the rocker arm.

In the binding according to claim 19, the freeing of the ski boot is supported when the rocker arm is pivoted upwards, and there is also a securing of the longitudinally displaceable holding part. The sliding of snow is advantageously supported by the shape of the holder.

Claim 20 specifies a special compact embodiment that manages with few components, is easy to assemble and at the same time ensures a secure mounting of the slide.

With the features of claim 21, the guidance of the slide in such a binding is further improved.

The features of claim 22 contribute to a compact design of the binding, which is easy to assemble and ensures a secure hold of the slider.

The features of the binding according to claim 23 result in a compact adjustment device, which can be accommodated in an advantageous manner in the central web on the sole of the ski boot.

The embodiment of the binding according to claim 24 only needs one slider on the heel of the ski boot, while the front slider is replaced by a locking element which is fixedly connected to the ski boot and is designed in the same way on its front side and is provided with inclined surfaces as the slider , so that it interacts in the same way with the associated mounting part. Since the forces on the ski boot give way to the slider on the binding heel part, the latching element can possibly disengage with its holder if the forces are large enough. The special shape of the front sole in no way affects the release behavior of the binding, but contributes to the fact that the user can roll off while walking in an advantageous manner, the front edge of the latching element being arranged in a protected manner. The features according to claims 25 and 26 ensure an improved Sliding behavior between slide or snap element and mounting part and increase the strength and resistance of the slide and snap element.

Overall, according to the invention, a binding is specified which advantageously offers good resetting possibilities both in the vertical and in the horizontal direction, in front and in the rear, provided that the trigger values do not can be achieved. The release itself is possible at the front and rear on both sides and upwards, as well as without further diagonal release. Furthermore, no rotating parts and corresponding bearings are required, which simplifies the construction and contributes to a flat overall height of the entire ski binding.

• Fig. 1 eine schematische Seitenansicht im Schnitt der erfindungsgemäßen Bindung zur Erläuterung der Verriegelungsstellung von Schieber und Halterung;
• Fig. 2 eine der Fig. 1 ähnliche Seitenansicht im Schnitt, die die Anordnung beim Einsteigen in die Bindung zeigt;
• Fig. 3 eine den Fig. 1 und 2 ähnliche Seitenansicht im Schnitt in einer ausgerückten Stellung von Halterung und Schieber;
• Fig. 4 eine perspektivische schematische Darstellung schräg von vorn des Kipphebels für die erfindungsgemäße Sicherheitsskibindung;
• Fig. 5 eine schematische perspektivische Darstellung schräg von oben des Kipphebels mit dem dazugehörigen Halterungsteil;
• Fig. 6 eine schematische Unteransicht im Schnitt der erfindungsgemäßen Sicherheitsskibindung zur Erläuterung der Einstelleinrichtung der Federeinrichtung;
• Fig. 7 eine schematische Seitenansicht der Einstelleinrichtung für die Federeinrichtung gemäß Fig. 6;
• Fig. 8 eine der Fig. 6 ähnliche Draufsicht auf die Einstelleinrichtung der Federeinrichtung in Richtung des Pfeiles VIII in Fig. 7;
• Fig. 9 eine perspektivische Seitenansicht schräg von vorn zur Erläuterung der Anordnung des Schiebers im Gehäuse;
• Fig. 10 eine Draufsicht, teilweise im Schnitt auf eine Ausführungsform des Schiebers beim Bindungsfersenteil;
• Fig. 11 einen Querschnitt durch die Anordnung des Schiebers im Gehäuse bei der Ausführungsform nach Figur 10;
• Fig. 11a eine teilweise Darstellung einer abgewandelten Ausführungsform der Anordnung nach Figur. 11;
• Fig. 12 eine perspektivische Draufsicht auf das Gehäuse der Bindung gemäß Figur 10 und 11; und in
• Fig. 13 eine schematische Seitenansicht, teilweise im Schnitt, einer abgewandelten Ausführungsform der erfindungsgemäßen Bindung.

The invention is explained in more detail below on the basis of the description of exemplary embodiments and with reference to the accompanying drawing. The drawing shows in:

• Figure 1 is a schematic side view in section of the binding according to the invention to explain the locking position of the slide and bracket.
• FIG. 2 is a sectional side view similar to FIG. 1, showing the arrangement when getting into the binding;
• 3 shows a side view similar to FIGS. 1 and 2 in section in a disengaged position of the holder and slide;
• 4 shows a perspective schematic illustration obliquely from the front of the rocker arm for the safety ski binding according to the invention;
• Figure 5 is a schematic perspective view obliquely from above of the rocker arm with the associated bracket part.
• 6 shows a schematic bottom view in section of the safety ski binding according to the invention to explain the setting device of the spring device;
• FIG. 7 shows a schematic side view of the setting device for the spring device according to FIG. 6;
• 8 is a plan view similar to FIG. 6 of the adjusting device of the spring device in the direction of arrow VIII in FIG. 7;
• 9 shows a perspective side view obliquely from the front to explain the arrangement of the slide in the housing;
• 10 is a plan view, partly in section, of an embodiment of the slide in the binding heel part;
• 11 shows a cross section through the arrangement of the slide in the housing in the embodiment according to FIG. 10;
• 11a is a partial illustration of a modified embodiment of the arrangement according to FIG. 11;
• 12 shows a perspective top view of the housing of the binding according to FIGS. 10 and 11; and in
• 13 is a schematic side view, partly in section, of a modified embodiment of the binding according to the invention.

In Figures 1 to 3 you can see a ski 20, on the top 20a, a mounting plate 21 is screwed with screws 22. 1 to 3, a holder 30 is shown, which essentially consists of a holder part 25 and a rocker arm 23. The rocker arm 23 has a bore 24 on its upper side 23a, which tapers from the upper side 23a in a wedge-shaped or funnel shape to the underside of the rocker arm 23. The screw 22 which can be seen in the left-hand region of FIGS. 1 to 3 is accessible through the bore 24.

In the right area of FIGS. 1 to 3, an adjustable spring device 90 is accommodated in a flat housing 29, the embodiment shown showing the integration into the sole of a ski boot 19. In another embodiment, not shown, the housing 29 can be attached with its spring device 90 below the sole of the ski boot 19 and fastened to it. The contours for the toe or the heel part of the ski boot 19 are designated 28 and 27 in FIGS. 1 to 3 and are indicated by dashed lines. Furthermore, the lower surface of the sole of the ski boot 19 is shown in dash-dotted lines between the underside of the housing 29 and the top of the fastening plate 21. In this embodiment, the spring device 90 has a slide 31 at the front and rear, which projects outwards beyond the front edge 34 of the shoe shell and is profiled, as is shown in detail in FIG. 9. The slider 31 is only displaceable and non-rotatable in the longitudinal direction of the ski boot 19, being under the pretension of springs 37, one of which is indicated in FIGS. 1 to 3. In another embodiment according to FIG. 13, a fixed latching element 131 is provided at the front and a slide 31 at the rear. Each slider 31 has a body 91 which has a front edge 88 on its front side, which is formed by inclined surfaces 32 and 33. On the back of the body 91, a connecting part or a shaft 35 can be seen, which is narrower than the body 91 and passes through an opening 39 between boundary webs 38 and finally ends in a head 36 on which the springs 37, which are designed as helical springs or helical springs act.

A spacer 40, for example with a Teflon slide plate, which is arranged on the fastening plate 21, can be seen underneath the sole of the ski boot 19. Furthermore, a stop 44 is provided on the mounting plate 21, approximately at the level of the projecting slide 31, which can have an opening (not shown) in order to allow access to the screw 22. This stop 44 can be, for example, the plate of a ski brake which is arranged on the fastening plate 21. This stop 44 limits the movement of the holding part 25 in the longitudinal direction to the front, while the limitation of this movement to the rear is carried out by the rocker arm 23.

The holding part 25 has on the side facing the slider 31 essentially three inclined surfaces, which are designated 41, 42 and 43 and give the holding part 25 a zigzag-shaped profile in section. The two inclined surfaces 41 and 42 form a groove 87 for receiving the front edge 88 of the slide 31.

The double arrows labeled A, B and C indicate the directions in which the holding part 25, the The rocker arm 23 or the slide 31 can move, the mounting part 25 and the slide 31 being able to carry out only displacements in the longitudinal direction, with a guide described in more detail below for these two components. The rocker arm 23 is arranged in a stationary manner and can be pivoted or pivoted about a pivot pin 26 as an axis in a bearing 26a, as is indicated in FIG. 4.

As already mentioned, the brackets 30 and the bracket part 25 are non-rotatably fastened to the ski. This applies in particular to the front bracket 30, which, with the omission of the rocker arm 23, only needs to consist of one bracket part 25, which can then be fixed in place on the mounting plate 21. The rocker arm 23, which can disengage from the holding part 25, essentially serves to enable the binding to be released by hand by inserting the foot, hand or tip of a ski pole into the tapered bore 24 or presses on the rear end near the rear edge 84 of the rocker arm 23. Such manual release will usually only be provided on the heel part of the ski boot, without the safety ski binding described here being limited to this embodiment.

The mounting part 25 of the rear mounting is slidable in the longitudinal direction on the mounting plate 21 screwed onto the top 20a of the ski 20, with complementary, interlocking toothing or profiles 45 and 46, as indicated in FIG. 5. This sliding guide for the holding part 25 can also be designed in the form of a dovetail profile or T-profile 45 or 46, while the respective counterpart, that is to say the holding part 25 or the fastening plate 21 then will have a complementary recess encompassing the profile in the longitudinal direction of the arrangement. If necessary, this recess can be U-shaped, for example, and engage behind the dovetail profile or T-profile. These interlocking toothings or profiles on the one hand ensure good guidance in the longitudinal direction of the arrangement and on the other hand prevent undesired movement of the holding part 25 upwards or tilting or tilting of the holding part 25.

3 and 4 show in detail the parts with which the rocker arm 23 and the mounting part 25 can be brought into locking engagement, a locking edge 48 on the rocker arm 23 then being in engagement with a locking groove 56 on the mounting part. As can be seen most clearly from FIG. 4, the rocker arm 23 has, on its underside facing the holding part 25, a ship bow-like profile 52 with a centrally arranged guide web 53, this profile 52 with the guide web 53 starting from the pivot pin 26 toward the front edge 85 of the rocker arm 23 increases. This profile 52 is followed by the locking edge 48, which runs horizontally across the guide web 53 and is formed by an upper, flat inclined surface 50 and a lower, steep inclined surface 49. A wedge-shaped cover 51 extends from the locking edge 48 to the front edge 85 on the upper side 23a of the rocker arm 23.

The bow-like profile 52 on the rocker arm has a V-shaped, possibly curved cross-section with curved lines, while the profile 52 in the side view, starting from the pivot pin 26, initially has a flat and then a more rising, curved contour, the meaning and purpose of which follows is explained in more detail.

The rear mounting part 25 is designed in its upper, rear area for receiving the bow-like profile 52 and has a centrally arranged recess 55 for the cover 51, in which a complementary guide groove 54 is provided in the longitudinal direction of the arrangement for receiving the guide web 53.

Furthermore, as is most clearly shown in FIG. 3, a transverse locking groove 56 is provided for receiving the locking edge 48, the locking groove 56 being formed by an upper, flat inclined surface 57 and a lower, steep inclined surface 58. This arrangement of the inclined surfaces, e.g. can be arranged at angles of 30 ° or 60 ° with respect to the horizontal, makes it easier to lock the holding part 25 with the rocker arm 23, but prevents inadvertent loosening of the holding part 25 and rocker arm 23 if there is insufficient pressure on the rear end in the vicinity of the rear edge 84 of the rocker arm 23 is exercised.

Although not specifically shown in the drawing, the holding part 25 can be provided in its lower region with a tension spring, which e.g. can engage on the mounting plate 21 or on the rocker arm 23 and thus prestress the mounting part 25 in the direction of the rocker arm 23. In this way it can be achieved that the user with his ski boot can more easily get out of the binding when the rocker arm 23 is pivoted up manually because the holding part 25 then automatically slides backwards. In addition, such a spring, which will be designed to be relatively weak, will ensure that the holding part 25 and the rocker arm 23 are pulled into locking engagement when the rocker arm 23 is pivoted down.

The curved line indicated by dash-dotted lines in the area of the mounting part 25 indicates the position of the rocker arm 23 in its locking position with the mounting part 25. The recess in the rear area of the holding part 25 itself is designed to be considerably stronger, so that the displacement of the holding part 25 in the longitudinal direction is made possible before the holding part 25 comes to rest against the rocker arm 23 during a movement backwards. e ^*

On the side of the holding part 25 facing the ski boot 19 there is a concave wedge-shaped groove 87 for receiving the slide 31, this wedge-shaped groove 87 being formed by an upper inclined surface 42 and a lower inclined surface 41 and extending in an arc in a horizontal plane. As can be seen from FIGS. 1 to 3, a steep inclined surface 43 adjoins the upper inclined surface 42, which runs essentially parallel to the lower inclined surface 41. Similar to the rocker arm 23 and the mounting part 25, the inclined surfaces 43 also facilitate entry into the binding in this case, because then the inclined surface 32 of the slider 31 slides down on the steep inclined surface 43 of the mounting part 25, compressing the springs 37 and then in the groove 87 engages with the front edge 88 after the front edge 88 has passed the edge 59 on the holding part 25 (cf. FIGS. 2 and 3).

As can be seen from the drawing, the holding part 25 runs with its upper side 17 obliquely downward away from the ski boot 19 in the direction of the upper side 20a of the ski 20, so as little material as possible with a good distribution of the forces absorbed at the base of the holding part 25 need. In particular in the case of a front bracket, in which no rocker arm 23 is required in the above-mentioned manner, but rather the bracket part 25 can be attached directly fixed to the fastening plate 21, the upper side 17 will be designed as a smooth surface which runs obliquely in the direction of the ski 20. The upper side 17 can, for example, have the shape of a conical section tapering towards the front or a concave shape in plan view, in order to facilitate the sliding off of snow which is pushed over the upper side 20a of the ski 20.

The slider 31 is designed as a flat part and has an arc-shaped convex front edge 88 which projects outward beyond the front edge 34 of the shoe shell and which is formed by the upper inclined surface 33 and the lower inclined surface 32 (see FIGS. 1 and 9). The curvature of the leading edge 88 is expediently chosen to be somewhat larger than the curvature of the wedge-shaped groove 87 receiving it, at least in the outer regions at a distance from the longitudinal axis of the arrangement, in order to enable or support the detachment of the slider 31 from the holding part 25 if sufficiently large transverse forces are exerted. The front edge 88 slides within the groove 87 until it comes out laterally from the holding part 25 when the springs 37 no longer have a counter bearing on the outside.

At the back of the slider. 31, starting from the body 91, bearing parts 35 and 36 are provided (see FIGS. 1 to 3), which consist of a shaft 35 and a head 36, the movement of the slide 31 in the longitudinal direction being limited by the limiting webs 38, so that the slider 31 cannot fall out of the housing 29. As shown in FIG. 6, the bearing parts can be provided as projections 92 or as recesses 95, which are separated from one another by webs 96 and accommodate springs 37, are formed and bear against the springs 37. In the lower area of FIG. 6 it can also be seen that the slide 31 has lateral projections 97 which can engage with stops 98 on the housing 29 in order to limit the movement of the slide 31 in the longitudinal direction.

In Figure 9, a lateral guide for a slider 31 is indicated, which can be designed so that the body 91 of the slider 31 and the housing 29 have complementary, interlocking teeth or profiles 80 and 81, which extend in the longitudinal direction and over a sufficient Length of the housing 29 are provided. Similar to the guide for the holding part 25, the body 91 or the housing 29 can also have a dovetail profile or T-profile, while the respective counterpart has a complementary recess that engages or engages around the profile, although this sliding guide is not specifically shown in the drawing is shown.

Finally, the spring device 90 is shown in detail in FIGS. 6 to 8, two springs 37 in the form of coil springs being recognized in the front and rear region of the housing 29, which are arranged next to one another in the longitudinal direction and are optionally separated by guide webs 78. The upper slide 31 in FIG. 6 has a slot 93 between its two projections 92, in which the guide web 78 can be received. Of course, the number of springs 37 is not limited to two, but rather a larger number of springs or only one spring at the front and / or rear can be provided as long as a uniform spring loading of the slide 31 is ensured.

The setting device 60 for the spring device 90 has an actuator 61 which engages the springs 37 via cylinders 68 and front and rear actuating parts 62 and 63 with projections 72 and 73 in order to adjust their pretension.

As can be seen from FIGS. 7 and 8, the actuating parts 62 and 63 are in threaded engagement via internal threads 70 in a corresponding recess with external threads 69 on the cylinder 68. The front and rear actuators 62 and 63 are not rotatable, but axially displaceable in the housing 29, e.g. by means of laterally projecting pins, not shown in the drawing, which are received in corresponding slots.

The end of the cylinder 68 opposite the external thread 69 is provided with a ring gear 66 which engages with a ring gear 65 on the actuator 61. The cylinders 68 are rotatable about their axis, but axially non-displaceable in the housing 29 when the ring gears 65 and 66 mesh with one another.

The actuator 61 itself has the shape of a one-piece cylinder which can be rotated about its central axis and has an I-profile in cross section with two end plates 75 and 76 lying opposite one another. The end plate 76 shown in plan view in FIG. 8 has a slot 64 for rotating the actuator 61, e.g. with a coin or a screwdriver. The opposite end plate 76 is equipped with the ring gear 65 which lies opposite the other end plate 75. On the outside of the end plate 76, a protruding pin 74 can be seen, which represents a rotary guide for the actuator 61.

In addition, the actuator 61 is provided with a cross-sectionally U-shaped recess 67, in which the two ring gears 66 are received by the adjacent cylinders 68. For the rotatable but non-displaceable arrangement of the cylinders 68, ring flanges or ring collars 71 are provided (see FIGS. 7 and 8), which can simultaneously form a lateral guide for the cylindrical actuator 61.

The adjusting device 60 with the toothed rings and threaded connections is arranged in such a way that rotation of the actuator 61 in one direction ensures that both actuators 62 and 63 are extended simultaneously, while rotation of the actuator 61 in the other direction results in that the actuating parts 62 and 63 are retracted simultaneously in the direction of the actuator 61. In this way, the bias of the springs 37 and thus the release behavior of the binding can be easily adjusted.

Another embodiment of the ski binding is shown in FIGS. 10 to 13. The slider 31, as can be seen most clearly in the plan view from below according to FIG. 10, is U-shaped and has two legs 111 and 112 which are fixedly connected to one another via a connecting region 113 and can be formed in one piece. The connecting area 113 forms with its two inclined surfaces 32 and 33 the front edge 88 for engagement with a corresponding mounting part 25, which is not shown separately here. In this respect, reference is made to the figures of the drawing described above. According to FIGS. 10 and 11, the slide 31 has an outer edge 140 which is delimited inwardly in the region of the two legs 111 and 112 by an inner edge 106 and in the connecting region 113 by a rear edge 108. In the interior, the slider 31 has a flat recess 142, which is the clearest most can be seen in FIG.

In the area of the flat recess 142 of the slide 31 one can see elongated holes 144 which run in the longitudinal direction of the arrangement and of which two elongated holes 144 are provided in each leg 111 or 112 in the illustrated embodiment, without the arrangement being limited to this number, rather, an elongated hole 144 per leg can suffice. Between the legs 111 and 112 there is an opening 117 in the slide, which extends in the longitudinal direction of the slide 31, opens to an adjusting device and has a recess 143 on the opposite side, which can be slot-shaped and is provided for guiding purposes. In the sack-shaped opening 117 there is at least one spring 37 for acting on the slide 31, which spring can be clamped between the bottom of the opening 117 and an adjusting slide 135.

Such a slide 31 is accommodated in a housing 129 which, according to FIGS. 11 and 12, has a double-T cross-section and is formed by a base plate 126, a cover plate 128 and a connecting web 127. The base plate 126 and the cover plate 128 have bores 103 and 104 which are arranged one above the other and aligned with one another, as is indicated in FIG. In the bores 103 in the base plate 126 non-rotatably fastened threaded bushings 102 are used, the z. B. non-circular cross-section or radially outwardly pointing webs in positive engagement with the surrounding material. The base plate 126 is firmly connected to the sole of the ski boot 19, the threaded bushings possibly contributing to the fastening, which in turn are arranged in such a way that they do not impair the interior in the ski boot 19, as is indicated in FIG. 11 by a dash-dotted line is. Before Ge Housing 129 shows an adjusting block 125 with an adjusting screw 124 and a viewing window 123, which are used to actuate the adjusting slide 135 (cf. FIG. 10). For this purpose, the adjusting block 125 is provided with a through bore 122, while the adjusting screw 124 bears with its head 124a against an end wall of the adjusting block 125. At the front end of the adjusting screw 124, a thread 121 is provided which engages with an internal thread 119 in the adjusting slide 135, which changes the preload of the springs 37 when displaced.

On the side opposite the thread 119 in the adjusting slide 135, a slot-shaped recess 136 is provided which receives the connecting web 127 when the adjusting slide 135 is pushed further into the opening 117.

If the slide 31 moves relative to the housing 129, the outer edge 107 of the cover plate 128 slides along the inner edge of the edge 140 until the rear edge 108 of the slide 31 comes into engagement with the corresponding rear edge 109 of the cover plate 128. At the same time, the springs 37 accommodated in the opening 117 are compressed and the connecting web 127 is received by the slot-shaped recess 143 of the slide 31. The guidance is simultaneously supported by the elongated holes 144 and fastening screws 100 (see FIGS. 10 and 11). The fastening screws 100 are inserted through the mutually aligned bores 103 and 104 and screwed firmly into the threaded bushings 102. In this way, an arrangement is obtained in which a perfect guiding of the slide 31 in the longitudinal direction and the length of the movement path is limited at the same time, on the one hand by the length of the elongated holes 144, on the other hand by the engagement of recess 143 and connecting web 127, and on the other hand by the Trailing edges 108 and 109 of the slider 31 and the cover plate 128, respectively 11 closes the cover plate 128 flush with the underside of the edge 140 of the slide 31. 11, springs 37 are accommodated in the interior of the slide 31, which springs are arranged separately from one another by the connecting web 127. 11a, blind holes 37a are provided in the longitudinal direction of the slide 31, which can accommodate such springs 37, in which case a wedge-shaped inner edge of the slide is in displacement engagement with the connecting web 127, the V-shaped grooves in the longitudinal direction of the Has housing. The slider 31 can be completely accommodated between the base plate 126 and the cover plate 128 without projecting on the edge up to the outer surface of the cover plate 128.

A special embodiment is shown in FIG. 13, in which a binding front part 110 and a binding heel part 120 can be seen under a ski boot 19, which are connected to one another with a connecting element 115, which is fastened to the rear base plate 126 and a front base plate 130. On the binding heel part 120 you can see an adjusting block 125, a slide 31 with the two inclined surfaces 32 and 33, which form the front edge 88 for engagement with a complementarily shaped, concave holding part. A profiled shoe sole 19b is schematically indicated below the binding heel part 120, which can be attached to the cover plate 128 by gluing or the like.

In the binding front part 110, the slider 31 is replaced by a latching element 131, the front edge 188 of which is formed by a lower sloping surface 132 and an upper sloping surface 133, which have an analogous, protruding profile, like the corresponding sloping surfaces 31 and 32 in the slides 31 described above The latching element 131 goes in the direction of the binding heel part 120 via an inclined surface 130a into the base plate 130, which is attached to the connecting element 115. The front shoe sole 19a, which merges into the latching element 131, sits in the recess formed in this way, as shown in FIG. 13.

In this embodiment it can be seen that the front sole 19a is curved forward and upward, which on the one hand makes it easier to roll when walking with the ski boot 19 and on the other hand brings the latching element 131 further away from the ground so that it assumes a more protected position. In this case too, the function of the ski binding according to the invention is essentially the same, because the binding can yield and trigger accordingly due to the spring-loaded slide 31 in the binding heel part 120 if the forces that occur are large enough. Triggers in the horizontal, vertical and diagonal directions are also possible at the front and rear without the other functions of the binding described above being impaired. This is because the same sliding processes take place in the associated holding part, regardless of whether the counterpart is a slide 31 or a snap-in element 131 designed with the same profile.

In the case of the binding described above, in contrast to conventional designs, no rotatable parts are provided at the points at which the ski boot engages with the binding, but rather only pressure forces are exerted on the slide 31 or the latching element 131 by the spring device, which can be brought into engagement with the respective brackets. The binding enables release to the side and upwards at the back and front, which is not the case with the bindings known to date, at least as far as the release at the toe is concerned.

As material for the housing 29 and 129 and the components housed therein, metal, z. B. steel or plastic if necessary, provided the required strength is guaranteed. The same applies to slider 31, snap-in element 131 as well as mounting parts 25 and rocker arm 23. For reasons of saving weight, maintaining strength and durability, components with a core made of metal or plastic and an outer coating made of special plastic or titanium can also be used, for example for the slide 31, the snap-in elements 131 and the holding parts 25, in particular those with the slide 31 or the engaging surfaces. Of course, care must be taken that the materials have sufficient hardness and good sliding behavior in order not to get any wear or deterioration of the inclined surfaces during operation, while at the same time it should be noted that No brittle materials are used that are subject to risk of breakage. Ball bearings or roller bearings 131 can be integrated in the concave surfaces of the holders on the ski or in the complementary inclined surfaces of the slider 31 or snap-in element, in order to reduce the friction and to ensure that the ski binding is released reliably.

As far as the mutually engageable profiles of slider 31, latching element 131 and holding part 25 are concerned, the inclined surfaces 32, 33, 132, 133 or 41, 42, 43 will be blended into one another with slight roundings in order to avoid the risk of injury from sharp edges avoid and allow a sliding transition from one position to another in or out of locking engagement. The same applies not only to the engagement of the groove 87 and the front edge 88, but also to the locking groove 56 and the locking edge 48 between the mounting part 25 and the rocker arm 23.

With the curvature of the leading edges 88 and 188 or their complementary, wedge-shaped groove 87, the arcuate contour which protrudes from the interior of the housing 29 in front and behind will be selected to suit one another. The arrangement is such that there is contact between the front edge 88 and 188 and groove 87 over a longer distance, this distance extending on both sides of an imaginary center line in the longitudinal direction of the ski. For example, these arcuate curvatures can have the shape of circular or elliptical sections, the "radius of curvature" at the front edge 88 of the slider 31, in particular at the laterally outer regions, being somewhat smaller than at the holding parts 25, in order to avoid that the front edge 88 or 188 abuts against the holding part 25 with only two outer points spaced apart from one another.

Claims (26)

1. Safety ski binding, with a front and a rear holder for releasably fastening a ski boot to the ski, in which a spring-loaded latching device is arranged in a flat housing in or under the sole of the ski boot, the latching device having at least one spring-loaded slider for latching has brackets attached to the ski,
characterized,
that each holder (30) on its side facing the ski boot (19) has a groove (87) which is wedge-shaped and curved in a horizontal plane for receiving the slide (31), that the groove (87) extends from an upper inclined surface (42 ) and a lower inclined surface (41) and that the slide (31) is designed as an outwardly projecting flat part with inclined surfaces (32, 33) complementary to the profile of the mounting groove (87) and a front edge (88) formed by its cutting line, wherein the groove (87) receives the complementary profile of the slide (31) approximately with line contact. 2. Binding according to claim 1, characterized in that the lines of contact of the arcuate groove (87) and the front edge (88) are formed by circular or elliptical sections, the radius of curvature of the front edge (88) of the slider (31) in the laterally outside lying areas is smaller than that of the groove (87). 3. Binding according to claim 1 or 2, characterized in that adjoining the upper inclined surface (42) is a substantially parallel to the lower inclined surface (41) extending inclined surface (43). 4. Binding according to one of claims 1 to 3, characterized in that the slide (31) on its side opposite the front edge (88) has a bearing (35, 36; 95, 96) for engagement with springs (37) of a spring device ( 90). 5. Binding according to claim 4, characterized in that the bearing projections (92) for engagement with springs (37) and on the body (91) of the slide (31) then has a narrower shaft (35) and a head (36) , and that between the head (36) and body (91) of the slider (31) limiting webs (38) with an opening (39) for the shaft (35) are arranged. 6. Binding according to claim 4, characterized in that the slide (31) in its body (91) has recesses (95) which are separated from one another by webs (96) and accommodate springs (37). 7. Binding according to one of claims 1 to 6, characterized in that the body (91) of the slide (31) has projections (97) which can be brought into engagement with stops (98) on the housing (29). 8. Binding according to one of claims 1 to 7, characterized in that the body (91) of the slide (31) and the housing (29) complementary, interlocking teeth or profiles, such as. B. dovetail profile or T-profile (80, 81) which extend in the longitudinal direction and form lateral guides for the slide (31). 9. Binding according to one of claims 1 to 8, characterized in that the spring device (90) for the respective slide (31) has two longitudinally arranged springs (37), which are optionally separated by guide webs (78) and their contact pressure on the slide (31) is adjustable with an adjusting device (60). 10. Binding according to claim 9, characterized in that the adjusting device (60) has a front (62) and a rear adjusting part (63) which are in threaded engagement (69, 70) each with a cylinder (68) on Actuator (61) are connected, the front and rear actuators (62, 63) being arranged as non-rotatable and axially displaceable cylinders in the housing (29) which have a recess with a thread (70) on one side and projections on the other side (72, 73) for engagement with the springs (39). 11. Binding according to claim 10, characterized in that the cylinders (68) connected to the actuator (61) are arranged in the housing (29) such that they can be rotated and are axially non-displaceable and at their end opposite the thread (69) there is a ring gear (66 ) on the circumference of the cylinder (68), which meshes with a ring gear (65) of the actuator (61). 12. Binding according to one of claims 1 to 11, characterized in that the actuator (61) is designed as a one-piece rotatable cylinder which has a cross-section I profile with two opposing end plates (75, 76), the one end plate ( 75) has a slot (64) for rotating the actuator (61) and the other end plate (76) has the ring gear (65) facing the first end plate (75) and has a recess (67) between the two end plates (75, 76) which receives the ring gears (66) of the adjacent two cylinders (68). 13. Binding according to one of claims 1 to 12, characterized in that the slot (64) opposite end plate (76) has a projecting pin (74) with which the actuator (61) is non-displaceable but rotatable in the housing ( 29) is mounted so that when the actuator (61) is rotated in the respective direction, both actuators (62, 63) are extended or retracted simultaneously. 14. Binding according to one of claims 1 to 13, characterized in that at least the rear bracket (30) is arranged in the longitudinal direction of the ski (20) slidably arranged bracket part (25) and a hinged to a mounting plate (21) about a horizontal axis (26) has pivotable rocker arm (23) which can be brought into locking engagement (48, 56) with the mounting part (25), the mounting part (25) of the rear mounting (30) on the mounting plate which can be attached to the ski (20, 20a) (21) is displaceable and the mounting plate (21) and the holding part (25) complementary, interlocking teeth or profiles, such as. B. have a dovetail profile or T-profile (45, 46). 15. Binding according to one of claims 1 to 14, characterized in that the longitudinal displacement of the holding part (25) to the front by a stop, optionally a ski brake (44) and to the rear by the rocker arm (23) is limited. 16. Binding according to one of claims 1 to 15, characterized in that the rocker arm (23) on its holding part (25) facing the underside of a to the front edge (85) rising, bow-like profile (52) with a central guide web (53) and thereon then has a horizontally running locking edge (48), while the rear mounting part (25) is provided with a complementary longitudinal guide groove (54) and a transverse locking groove (56) for receiving the projecting areas on the rocker arm (23). 17. Binding according to one of claims 1 to 16, characterized in that the ship's bow-like profile (52) on the rocker arm (23) V-shaped cross section and an arcuate in the direction of the front edge (85), initially flat and then increasing contour of the guide web (53). 18. Binding according to one of claims 1 to 17, characterized in that the locking edge (48) on the rocker arm (23) has an upper, flat inclined surface (50) and a lower, steep inclined surface (49) with respect to the horizontal for engagement with the complementary Has locking groove (56), and that the rocker arm (23) has a wedge-shaped cover (51) which can be received in a recess (55) on the upper side (17) of the holding part (25), the rocker arm (23) on it The top (23a) is designed as a tread surface and is provided with a bore (24) tapering through it and tapering in a wedge shape. 19. Binding according to one of claims 1 to 18, characterized in that the holder part (25) is provided in the lower region with a tension spring which engages on the fastening plate (21) or on the rocker arm (23) and the holder part (25) in Biases the direction of the rocker arm (23), the mounting part (25) with its upper side (17) from the ski boot (19) running obliquely downwards in the direction of the ski (20) and with the front mounting (30) with a smooth surface, e.g. B. is in the form of a tapered conical section. 20. Binding according to one of claims 1 to 19, characterized in that the slide (31) is U-shaped in plan view, that the two legs (111, 112) of the slide (31) each have at least one longitudinal hole ( 144), and that between the two legs (111, 112) there is an opening (37a, 117) on the opposite side of the front edge (88) for receiving at least one spring (37). 21. Binding according to one of claims 1 to 20, characterized in that the slide (31) on its underside and / or in the connecting region (113) of the two legs (111, 112) has recesses (142, 143) which with the Housing (129) can be slidably brought into guide engagement. 22. Binding according to one of claims 1 to 21, characterized in that the housing (129) has a double-T cross-section, the base plate (126) and the cover plate (128) having bores (103, 104) aligned with one another, the bores (103) in the base plate (126) are provided with non-rotatably fastened threaded bushes (102) and the cover plate (128) is flush with the underside (140) of the slide (31). 23. Binding according to one of claims 1 to 22, characterized in that between the two legs (111, 112) of the slide (31) an adjusting slide (135) is arranged, which is displaceable relative to an adjusting block (125) and with an adjusting screw ( 124) can be actuated. 24. Binding according to one of claims 1 to 23, characterized in that instead of the front slider (31) to the front sole (19a) adjoining, firmly connected to the ski boot (19) is provided locking element (131), the front Sole (19a) is preferably curved forward and upward. 25. Binding according to one of claims 1 to 24, characterized in that the slide (31) and / or the latching element (131) has an outer coating of titanium or plastic on a body made of metal or plastic. 26. Binding according to one of claims 1 to 25, characterized in that in the inclined surfaces (41, 42) of the arcuate groove (87) or in the inclined surfaces (32, 33; 132, 133) of the slide (31) or Locking element (131) ball bearings or roller bearings are integrated.

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