EP1292369B1 - System consisting of ski binding and ski boot - Google Patents

Description

The invention relates to an arrangement of a ski binding and an adapted ski boot according to the preamble of the claim 1.

Such ski bindings are known in many designs. They have in common that a binding attached to the ski first engagement element with a on or in the Sole of a ski boot provided second engagement element in an engagement can be brought by the front end the ski boot during cross-country skiing or a telemark skiing descent being held on the ski while the back end (Shoe heel) of the ski boot raised substantially free can be. The first and second engagement element thus provide basically a rigid, i. in the longitudinal direction immovable Articulated connection with a substantially horizontal and ago perpendicular to the ski longitudinal axis extending axis of rotation ago. The Questionable articulation or axis of rotation can either front End or slightly further backwards in the toe root or ball area. Example becomes in this connection to the arrangement according to FR 2 741 543 directed. This construction with rigid joint is an anatomically optimal movement, i. one Anatomically optimal rolling of the front roller on a level Underground.

The same applies to a ski binding or arrangement, as for example in WO 96/23558 of the applicant is described. Here are next to the mentioned first and second engagement element in the area of the front shoe end a third and fourth Engagement element in the middle area, in particular at the rear End of the front sole of the ski boot provided by the Ski boot in this area additionally fixed and on him one exerted in the direction of the ski executed biasing force when lifting the shoe heel as restoring force acts.

In this binding and similar designs will also no anatomically optimal movement achieved than the Ski boot (and thus the skier's foot) while lifting the Shoe heel or heel essentially a total of one is rotated near the toes tips axis of rotation. Also this is a rigid, i. in the ski longitudinal direction immovable joint connection. Such a rigid hinge connection contradicts the natural movement when unrolling of the foot on a substrate and allows accordingly no optimal introduction of force into the ski when pushing off.

The invention is therefore based on the object with respect to an anatomically and physiologically optimized movement sequence improved skiing and thus higher utility value properties having arrangement of the generic type specify.

This object is achieved by an arrangement with the characteristics of Claim 1 solved.

The invention includes the essential idea, the ski boot and to make the bond so coordinated, that the skier's foot when raising the heel (specifically for repelling during cross-country skiing) in the ball and toe area or in the area between toes and bales an anatomical and Performs physiologically correct rolling movement on the ski. she further includes the idea of either the bottom of the Shoe sole in the front area and / or the front sole area associated sole support surface on the ski or a Binding plate in ski or shoe longitudinal direction convex train. This contour promotes a physiologically correct Rolling motion when lifting the heel or the Heel. Next belongs to the invention of the thought, the fixation between binding and ski boot in the area of the front end of the To execute ski boot so movable that in opposite directions to lift or lowering the shoe in the heel area a certain Lowering or lifting the front end is possible. This becomes by a special design of the (known per se) first and second engagement elements on the binding or on Ski boot in combination with third and fourth engagement elements reached in the ball or toe root area, the Engagement elements are coordinated so that the ski boot or the front sole of the same on the ski or the binding plate when raising and lowering the shoe heel one Art performs rocking motion. The articulation between shoe and bonding is not rigid. The actual joint axis between shoe sole and ski or binding is during lifting or lowering of the heel in the ski longitudinal direction variable. This provides an anatomically optimal movement, the externally unbound unrolling of the foot on a solid surface corresponds.

Regarding constructive details and embodiments is on referenced the dependent claims.

In a first embodiment is for the realization of the aforementioned Movement while maintaining the fixation of the ski boot at the binding at the first and / or second Engagement element provided a first spring member, which is the Front end of the shoe sole in the direction of the ski or the on this fastened binding plate pretensions. The mentioned Spring member is then the first engagement element in the area associated with the sliding guide.

Preference is also given to a possibly additionally provided third and / or fourth engagement element associated with a (second) spring member, which the shoe sole in the direction of the ski or the binding plate pretensions. This is especially as a longitudinal elastic Band or cable formed, which is below or side of the shoe sole extends and the fourth engagement element (and thus also the third engagement element in the shoe sole) with a point of attachment to the ski or the Skibindung elastically connects. In another embodiment is the strap or cable is inelastic and has an additional, in particular horizontally acting, spring element in the Ski binding provided with spring elasticity in the longitudinal direction.

The engagement elements in the shoe sole, d. H. the second and third engaging element, are in a convenient and for that second engagement element known per se as transverse to the center plane of the shoe and thus extending to the ski longitudinal axis Axis, in particular made of steel. These Axis is from the associated first and fourth engagement element, respectively embraced like a hook.

For the realization of a dynamically advantageous restoring force for returning the shoe sole to the "normal position" with on the ski or the binding plate lowered shoe heel is behind the first engagement element ski side or behind the second engagement element shoe side elastically compressible Counter-pressure element (Flexor) provided. This is in particular between the engagement areas at the front end and in the middle area of the shoe sole arranged and in a simple, cost-effective and durable design as an elastomer block educated. This is to prevent malfunction by accumulated snow, preferably with a groove or stud profiling provided. Preferably, the position has assigned area of the shoe sole one for this purpose as a negative mold Corresponding profiling, which at the same time a certain additional Guidance realized between shoe sole and ski binding becomes.

As mentioned, in a preferred embodiment of the invention in a central area of the ski boot, especially in the bale or toe root area of the shoe sole a third engagement element and in this corresponding position at the Ski binding provided a fourth engagement element. By the Engagement of both becomes a fixation of the ski boot opposite the Ski get back, even if the first and second engagement element at the front end of the shoe due to its design would allow such a movement.

In a first preferred embodiment of the first engagement element this one has before the second engagement element lying front and one above the second engagement element lying upper contact surface portion. These contact surface sections prevent or limit a shift the ski boot forward or up. The front contact surface section is designed in a special design as a slideway along which the second engagement element when lifting or lowering the rear shoe sole end down or slides up. In another embodiment, the first engagement element designed as a hook element, which additionally a lower contact surface portion having the second Engagement element also fixed from below. In this latter Version has the ski binding in the front part of a sliding guide for the first engaging element in which this total can slide down or up.

A particularly advantageous embodiment is characterized from that the first engagement element one around a approximately parallel to the ski deck or shoe sole and across the Ski or shoe longitudinal axis extending pivotable Fanghaken comprises, by the front sole-side second engagement element can be inserted from the rear. This embodiment can be designed in extreme cases so that the first engagement element on the sole-side second engagement element in such a way connected is that the shoe alone by these two engagement elements held on the ski or on the binding is such, that the above-described rolling movement under appropriate With movement of the first and second engagement element possible is. Of course, then measures would have to be taken to that Ski or binding side engagement element from the sole side If necessary, to be able to solve the second engagement element.

Preferably, the first, designed as a catch hook engaging element or its pivot axis against the action of a elastic element, in particular compression spring element forward movable. Thus, the rolling process of the shoe sole can be on the ski or binding or a binding plate yet adjust more of the anatomical rolling motion.

If the first and second engagement elements only the shoe Hold in the direction of forward and up, third and third fourth engagement elements may be provided which the shoe in Direction to the back and hold up, the latter engagement elements preferably in the ball or toe root area are effective. In a preferred embodiment, this includes fourth engagement element one around an approximately parallel to the Ski deck or shoe sole and across the ski or shoe longitudinal direction extending axis pivotable locking hook, by means of the rear-displaced sole-side third engagement element Towards the front, so that the Shoe by interaction of first and second engagement element, which is a movement of the shoe in the direction of front limit, on the one hand, and through cooperation of third and fourth engagement element, which is a movement of the Shoe bounded towards the rear, on the other hand in position held on the binding. The engagement elements are naturally matched so that the shoe in the area the front sole on the ski or the binding or the binding housing can perform the rocking motion described above.

Preferably, in the area in front of the third engagement element an elastic counter-pressure element effective, which before the third engagement element lying sole portion upwards biases. This counter-pressure element corresponds to the flexor of above-described first embodiment.

For further benefits and technical details of the second Embodiment is directed to the claims 20 et seq.

Fig. 1

eine Prinzipskizze zur Erläuterung der Erfindung, die den vorderen Abschnitt eines Skischuhs in zwei Bewegungsstellungen zeigt;

Fig. 2 bis 5

schematische Darstellungen (in Art teilweise geschnittener Seitenansichten) einer Anordnung gemäß einer ersten Ausführungsform der Erfindung in verschiedenen Gebrauchslagen;

Fig. 6 bis 8

schematische Darstellungen (in Art teilweise geschnittener Seitenansichten) einer Anordnung gemäß einer zweiten Ausführungsform der Erfindung in verschiedenen Gebrauchslagen;

Fig. 9 bis 11

schematische Darstellungen (als Seitenansicht bzw. teilweise geschnittene Seitenansicht) einer Anordnung gemäß einer dritten Ausführungsform der Erfindung in zwei Stellungen des Skischuhs; und

Fig. 12 bis 16

schematische Darstellungen (als Seitenansicht in unterschiedlichen Maßstäben sowie eine Draufsicht) einer Anordnung gemäß einer vierten Ausführungsform der Erfindung in zwei Stellungen des Skischuhs, wobei die Draufsicht lediglich den bindungsseitigen Teil der Anordnung darstellt.

Hereinafter, preferred embodiments of the inventive arrangement will be explained in more detail with reference to the accompanying drawings. These show in:

Fig. 1

a schematic diagram for explaining the invention, showing the front portion of a ski boot in two positions of movement;

Fig. 2 to 5

schematic representations (in the form of partially sectioned side views) of an arrangement according to a first embodiment of the invention in different operating positions;

Fig. 6 to 8

schematic representations (in the manner of partially sectioned side views) of an arrangement according to a second embodiment of the invention in different operating positions;

Fig. 9 to 11

schematic representations (as a side view or partially sectioned side view) of an arrangement according to a third embodiment of the invention in two positions of the ski boot; and

Fig. 12 to 16

schematic representations (as a side view at different scales and a plan view) of an arrangement according to a fourth embodiment of the invention in two positions of the ski boot, wherein the plan view represents only the binding-side part of the arrangement.

Fig. 1 shows the front portion of a ski boot 1 with a Shoe sole 3 in two positions of movement on the surface of a Skis 5. A first movement position in which the (not shown) heel area of the ski boot 1 relative to the surface of the ski 5 is raised far, is drawn throughout, while a second movement position in which the ski boot with his heel area resting on the ski, dashed is drawn. In the shoe sole 3 are a front and a rear engagement member 7 and 9, respectively, in connection each with a (not shown here) binding side Engaging element for fixing the ski boot on the Serve skis. It can be seen that the shoe sole 3 in here shown front portion curved in the longitudinal direction arcuate is.

From the comparison of the two movement positions it is clear that the transition from the first movement position with raised heel in the second movement position with lowered heel raising the front sole end and thus the front engagement member 7 from a height h ₁ to a height h ₂ . At the same time, the contact surface between ski boot and ski shifts from a first contact surface C ₁ to a second contact surface C ₂ to the rear. It is understood that the transition from the second to the first movement position is accordingly connected to a lowering of the front sole end and a displacement of the contact surface forward. This movement largely corresponds to an anatomically correct rolling of the foot over the ball-toe area.

2 to 5 show - in a schematic representation - a ski binding ski boot arrangement 100 with a ski boot 101 with a sole 103 and a ski binding 104.

Again, in the shoe sole 103, a front and rear Engagement member 107, 109 attached, each as transverse to Shoe center plane and ski axis running steel axles are executed. (In the further description and the claims These shoe-side engagement elements are also called second and third engagement element.)

The ski binding 104 comprises a binding plate 111, a binding side front (first) engagement element 113, a rear one (fourth) engagement element 115, as a counter-pressure element elastomeric block 117 and fastening actuating and fasteners, the front and rear binding side Engagement element 113, 115 are assigned. Latter In particular, they include a sliding sleeve guide 119 for the first engagement element 113 with a coil spring element 121, via a first pivot axis 123 on the binding plate 111 attached, and one with the sliding sleeve guide 119 via a toggle mechanism 125 and the binding plate 111th via a second pivot axis 127 associated actuating lever 129. The fourth engagement element 115 in the form of the third Engagement element 109 by approximately 180 ° wrap around hook is as Part of a spring-elastic or longitudinally executed mounted and mounted in the binding plate 111 drawstring 131 trained.

While in Fig. 2, the arrangement 100 in the operating position, ie in the locked state, with ski boot flat on the ski 3 shows it after putting on the ski boot, but before closing the front latch, and 4 and 5 show two further states of motion with different high raised ski boot.

In the figures it can be seen that the binding side front (first) engagement element 113 designed as a U-shaped hook is, which serves as the shoe-side front engaging element Steel axle 107 with an upper, a front and a encompasses lower contact surface portion and thus upwards, fixed in front and below. A movement of the ski boot 101 after behind is the engagement of the rear binding side or shoe-side engagement elements (axle or hook) 109, 115 limited. Next it can be seen that the above-mentioned height shift the front end of the shoe sole 103 and thus the there attached as a second engagement element axis 107th through the sliding sleeve guide 119 under the action of the spring force the coil spring element 121 while maintaining the engagement of the axis 107 with the first engagement element acting hook 113 is enabled. A permanent intervention between the rear axle 109 and the associated hook 115 is longitudinal elasticity or elastic longitudinally slidable attachment and flexibility of the drawstring 131st achieved due to this flexibility and elasticity of the Pivoting movement of the rear axle 109 on the shoe sole 103 when raising its heel area follows. Is recognizable Finally, the elastic deformation of the elastomeric block 117th when raising the heel and opposing depression of the front Sohlenendes, this movement an elastic restoring force opposes.

In Fig. 6 to 8 is compared with the first embodiment modified ski binding ski boot assembly 200 shown. There most of the components are identical or at least one another functionally largely correspond to the first embodiment corresponding reference numerals selected, and below only the differences from the first embodiment described. Complete agreement between both embodiments exists with regard to the execution of the ski boot 201 and the elastomer block 217.

A first modification consists in the changed execution of the front binding-side engagement element (hook) 213 and the associated connection with the binding plate 211. The hook 213 is directly over a pivot axis 223, d. H. under waiver on a sliding guide and a spring element, with the binding plate 211 connected. He is about the operating lever 229th and the toggle mechanism 225, starting from the by a (not separately designated) torsion spring on the pivot axis 227 of the actuating element 229 exerted biasing force of pressed forward on the front axle 207 on the shoe sole 203. Its the axis 207 facing the rear edge or surface 213a forms a sliding guide for the axis 207, along which this when raising the heel of the ski boot 201 down or up slides (see Fig. 6 with Fig. 7 and Fig. 8).

The second significant difference from the arrangement 100 According to Fig. 2 to 5 there is provided in the provision of a sliding sleeve guide 233 with internal coil spring element 235 in the attachment area of the tension band 231 in the binding plate 211. Da thereby the necessary longitudinal elasticity of the connection between the binding plate and the rear hook 215 created Although the tieback 231 itself is bendable, but without Longitudinal elasticity executed.

Figs. 9 to 11 show, as a third embodiment, a ski binding ski boot arrangement 300, in turn, largely with the Arrangement 100 of FIG. 2 to 5 matches and in the therefore corresponding reference numerals are selected and subsequently to dispense with the explanation of matching parts. Here agree the structure of the ski boot 301 and the binding side Engaging elements with the associated fastening, Connecting and actuating means with the first embodiment completely coincide.

The main difference is in the design of the binding plate 311 in the region of the counter-pressure element 317 and in its execution. The binding plate 311 has a binding plate profiling 311a, which is to be used as a negative mold corresponding recesses 303 a in the shoe sole 303 (for example, in the edge region) is formed. On the other hand is the counterpressure element also embodied here as an elastomeric block 317 unprofiled and an elongated recess in the Associated with the central region of the front end of the shoe sole 303. (This recess is basically the other versions present and not designated separately in FIGS. 9 to 11.) In comparison of Fig. 10 and 11 can be seen in which way the elastomer block 317 in contact with the curved bottom of the shoe sole 303 (in the recess) deformed when raising or lowering the heel. Functional As a result, substantially the same effect is achieved as in the profiled design of the counter-pressure element according to FIG. 2 to 5.

In FIGS. 12 to 16, one is opposite to those described above Embodiments still further modified ski binding ski boot arrangement 400 shown. Because most components identical or at least functionally similar to each other, were corresponding to the previous embodiments Reference numerals are chosen, and subsequently only the differences from the previous embodiments described. The functionally corresponding parts are each with reference numerals, which instead of a 1, 2 or 3 a 4 are preceded.

Accordingly, the arrangement 400 according to the figures 12 to 16 characterized in that the first engagement element 413 one around an approximately parallel to the ski deck or shoe sole 403 and extending transversely to the ski or shoe longitudinal direction Axis 432 pivotable fishing hooks 433 includes, in which the front sole side second engagement element 407 from the rear is insertable. The catch hook 433 thus limits the movement of ski boot 401 forward. The second engagement element is as a sole integrated transverse axis made of stainless steel or Like. Formed, wherein in the specific case, the transverse axis leaf-shaped is trained.

The catch hook 433 or its pivot axis 432 is, in particular Figure 13 shows very well, against the effect of a elastic element, here compression spring element 421, after at the front, i. movable in the direction of arrow 434. This is the Catch hook 433 when rolling the front sole on the ski or a binding plate 411 with the second engaging member 407th can be moved without constraint. The pivot axis 432 is to this Purpose within a slot recess 440 in the binding housing or longitudinally displaceably mounted in the binding plate 411, and against the action of the compression spring element 421.

The fact that the ski boot without binding on the binding plate 411, the second engagement element 407 leads inevitably a movement both in the ski longitudinal direction as well perpendicular to the ski deck. These movement components should not be affected by the catch hook 433.

The fourth engagement element 415 also includes one to one approximately parallel to the ski surface or shoe sole 403 and Axis 435 extending transversely to the ski or shoe longitudinal direction pivotable locking hook 436, by means of which the rear displaced third engagement element 409 in the forward direction can be pulled, so that the shoe 401 by cooperation of the first and second engagement element, which movement of the Limiting shoe 401 towards the front on the one hand, and by interaction of third and fourth engagement element, which limit a movement of the shoe 401 in the rearward direction, on the other hand held in position on the binding 404 is.

In the area in front of the third engagement element 409 is an elastic Counter-pressure element 437 effective, which before the third Engagement element 409 lying sole portion upwards biases. The elastic counter-pressure element 437 is in concrete Case assigned to the fourth engagement element 415 and as Compression spring formed. Instead of a compression spring can also be Elastomer block be provided. According to Figure 16 is the fourth engagement element is a U-shaped part, the two Legs are mounted pivotably about the axis 435. The two Legs are beyond the mentioned pivot axis 435 addition extended forward, wherein the counter-pressure element 437 respectively between the leg extensions on the one hand and the ski deck area or the binding housing on the other hand is effective. Of the Locking hook 436 is on the crosspiece of the U-shaped fourth engagement element arranged, and centrally located opposite the catch hook 433 associated with the second engagement element (see Figure 16).

The fourth engagement element 415 or the associated locking hook 436 is in the ski longitudinal direction of a shoe release order in a shoe holding position according to the figures 12 to 15 or vice versa. This longitudinal displacement of the fourth engagement element 415 is replaced by a fourth Engagement element associated actuating mechanism with actuating lever 438 causes, which is in shoe holding position of fourth engagement element in a stable Übertotpunktstellung located. Since this is a known mechanism act, a more detailed representation and is unnecessary Description of the same.

The longitudinal guide of the shoe 401 on the ski 5 or the binding plate 411 is done by mutually corresponding Longitudinal ribs 440 and longitudinal grooves on the running side of the shoe sole 403 and / or the sole support surface 439 of the ski or the binding plate 411th

In the illustrated embodiment, the third engagement element 409 in the front bale or toe root area positioned while the second engagement member 407 located at the front sole end, but at the bottom. Theoretically, the second engagement element could also be used before be positioned at the front sole end.

Catch and locking hooks 433 and 436 thus move when lifting the heel with the rolling on the binding plate Shoe sole without forcing with simultaneous fixation of the Ski boot 401 both forward and backward and of course, also upwards. The ski boot can be so roll on the binding plate 411 essentially without constraint, as well as Figures 12 and 13 in comparison to the figures 14 and 15 can be seen very well. When displayed in Figures 12 and 13, the shoe heel is lowered onto the ski. In the illustration according to FIGS. 14 and 15, the Shoe heel maximally raised.

In the illustrated embodiment, the longitudinal guide ribs at the top or sole support surface 439 of the binding plate 411 trained. At the bottom or running side the shoe sole 403 are provided corresponding longitudinal grooves.

The sole support surface 439 is further associated with the front sole region in ski or shoe longitudinal direction convex arched trained. This training is useful if the front sole is designed essentially flat. Both above-described embodiments is such a convex curved Sole support surface 439 not required because of these Embodiments of the front region of the shoe sole in ski or shoe longitudinal direction is convexly curved. Both Embodiments allow the shoe to roll on the ground under longitudinal displacement of the contact line between Shoe and ski or binding plate when lifting or lowering of the heel.

Basically, it is also conceivable, the shoe only by means of third and fourth engagement elements on the ski or on the binding to fix, of course, then taken care of must be that the fourth engagement element, the third engagement element completely covered, so that the shoe both after fixed at the front and at the back. The corresponding mechanical Effort can be avoided by a solution, as described with reference to Figures 1 to 16.

The embodiment of the invention is not on those described above Examples limited, but also in a variety of Modifications possible, which are within the scope of professional action.

LIST OF REFERENCE NUMBERS

1; 101; 201; 301; 401

ski boot

3; 103; 203; 303; 403

sole

5

ski

7; 107; 207; 307; 407

front (second) engagement element (Axis)

9; 109; 209; 309; 409

rear (third) engagement element (Axis)

100; 200; 300; 400

Ski binding ski boot configuration

104; 204; 304; 404

ski binding

111; 211; 311; 411

binding plate

113; 213; 313; 413

front (first) engagement element (hook)

115; 215; 315; 415

rear (fourth) engagement element (Hook)

117; 217; 317

Counterpressure element (elastomeric block)

119; 233; 319

Gleithülsenführung

121; 235; 321

Coil spring element

123; 127; 233; 227

swivel axis

125; 225; 325

Toggle mechanism

129; 229; 329

actuating lever

131; 231; 331

tieback

213a

Trailing edge or surface

303a

recesses

311

Bingungsplatte profiling

C1, C2

Contact surface ski boot / ski

h1, h2

Height of the front sole end above the ski

432

swivel axis

433

hook

434

arrow

435

swivel axis

436

locking hook

437

Counterpressure element

438

actuating lever

439

Sole support surface

440

guide rib

Claims (24)

1. Arrangement (100; 200; 300; 400) comprising a ski binding, in particular a cross-country or telemark binding, and a ski boot (1; 101; 201; 301; 401) having a boot sole (3; 103; 203; 303; 403) adapted thereto such that the arrangement includes a first engagement element (113; 213; 313; 413) on the binding side and a second, boot-side engagement element (7; 107; 207; 307; 407) on the front of the boot, in particular in the region of the front end of the boot sole, which engage with one another in the in-use position and keep the ski boot in permanent linear or areal contact with a ski (5) or a binding plate (111; 211; 311; 411) attached to the ski,
   characterized in that
   either the front region of the underside of the boot sole and/or the sole-supporting surface (439) on the ski (5) or binding plate (411) associated with the front sole region is/are convexly curved in known manner in the longitudinal direction of the ski or boot and that
   the first and second engagement elements are adapted to one another such that when the back end or heel of the boot is raised or lowered, with an accompanying, corresponding movement of the first and second engagement elements, the boot sole (3; 103; 203; 303; 403) makes a rolling motion associated with a longitudinal shift of the contact line or area on the ski (5) or binding plate (111; 211; 311; 411), effecting a (see-saw) movement of the front end of the boot of a lowering or raising of the front end in the direction opposite to the movement of the back end or heel.
2. Arrangement in accordance with claim 1, characterized in that
   a third, boot-side engagement element (9; 109; 209; 309, 409) is provided in a middle region at the front part of the sole, in particular in the region of the ball of the foot or the base of the toes, and a fourth, binding-side engagement element (115; 215; 315; 415) is provided in a corresponding position on the ski binding which engages the third engagement element such that the third and fourth engagement elements limit the extent to which the ski boot (1; 101; 201; 301) 401) can be displaced rearward relative the ski (5).
3. Arrangement in accordance with claim 1 or 2, characterized in that
   the first and/or second engagement element (113; 313; 413) comprises a first spring member (121; 321; 421) which biases the front end of the boot sole (103; 303; 403) in the direction of ski (5) or binding plate (111; 311; 411).
4. Arrangement according to one of the preceding claims, characterized in that
   first engagement element (113; 213; 313) comprises at least one front contact surface section, situated in front of second engagement element (7; 107; 207; 307), and one upper contact surface section, situated above the second engagement element; whereby the front contact surface section limits displacement of the boot (1; 101; 201; 301) relative the ski (5) in the forward direction and the upper contact surface section limits upward displacement.
5. Arrangement in accordance with claim 4, characterized in that
   the front contact surface section is configured as a slideway (213a) along which the second engagement element (213) slides downward or upward when the back end of the boot sole is raised or lowered.
6. Arrangement in accordance with claim 4, characterized in that
   first engagement element (113; 313) is configured as a hook element comprising a lower contact surface section disposed beneath the second engagement element (107; 307) and configured to slide substantially vertically as a whole.
7. Arrangement in accordance with claim 6, characterized in that
   the ski binding comprises a sliding guide bearing (119; 319) for first engagement element (113; 313), in the region of which the first spring member (121; 321) is disposed.
8. Arrangement in accordance with one of claims 2 to 7, characterized in that
   the third and/or fourth engagement element (115; 215; 315) comprises a second spring member (131; 235; 331) which biases the boot in the direction of the ski (5) or binding plate (111; 211; 311).
9. Arrangement in accordance with claim 8, characterized in that
   the second spring member is configured as a longitudinally-elastic band (131; 331) or cable which extends below or along the side of the boot sole (103; 303) and connects fourth engagement element (115; 315) to a fixation point on the ski (5) or ski binding (104; 304).
10. Arrangement in accordance with claim 8, characterized in that
    said second spring member is configured in particular as a horizontally-acting spring element (235) disposed in the ski binding (204) and connected to the fourth engagement element (215) by a band (231) or cable which is substantially inelastic in the longitudinal direction.
11. Arrangement according to one of the preceding claims, characterized in that
    an elastically compressible counterpressure element (117; 217; 317) is provided behind the first engagement element (113; 213; 313) on the ski (5) or the binding plate (111; 211; 311) and/or behind the second engagement element (7; 107; 207; 307) on the underside of the boot sole (3; 103; 203; 303) which applies upwardly directed force to the corresponding section of the boot sole.
12. Arrangement in accordance with claim 11 and one of claims 2 to 10, characterized in that
    said counterpressure element (117; 217; 317) is disposed substantially between the first and fourth engagement elements on the ski (5) or binding plate (111; 211; 311) or between the second and third engagement elements on the boot sole.
13. Arrangement in accordance with claim 11 or 12, characterized in that
    said counterpressure element (117; 217; 317) is configured as an elastomer block.
14. Arrangement in accordance with claim 13, characterized in that
    elastomer block (117) and/or binding plate (311) and in particular also the thereto correspondingly positioned section of the boot sole (103; 203; 303) exhibit ridged or cleated profiles (303a; 311a) corresponding to one another.
15. Arrangement in accordance with one of the preceding claims, characterized in that
    the second and/or third engagement element (7, 9; 107, 109; 207, 209; 307, 309; 407, 409) on the boot sole is/are configured as an axle, in particular made of steel, extending transverse to the longitudinal axis of the ski.
16. Arrangement especially in accordance with one of the preceding claims, and in particular claim 1, characterized in that
    the first engagement element (413) comprises a catch hook (433) which can be pivoted about an axis (432) extending relatively parallel to the upper surface of the ski or boot sole (403) and transverse to the longitudinal direction of the ski or boot, into which the front second engagement element (407) on the sole side can be inserted from behind.
17. Arrangement in accordance with claim 16, characterized in that
    said catch hook (433) or its pivoting axis (432) is movable in the forward direction (434) against the action of an elastic element, in particular compression spring element (421).
18. Arrangement in accordance with one of claims 1 - 3 and/or 15 - 17, characterized in that
    fourth engagement element (415) comprises a stopping hook (436) which can be pivoted about an axis (435) extending relatively parallel to the upper surface of the ski or to the boot sole (403) and transverse to the longitudinal direction of the ski or boot, by means of which the third engagement element (409) on the sole side, having been displaced rearward, can be pulled forward such that boot (401) is kept in position on binding (404) by the combined action of the first (413) and second (407) engagement elements limiting the forward movement of the boot, as well as by the combined action of the third (409) and fourth (415) engagement elements limiting the rearward movement of the boot (401).
19. Arrangement in accordance with claim 18, characterized in that
    an elastic counterpressure element (437) acts in the region in front of the third engagement element (409) to apply upwardly-directed force to the section of the sole situated in front of third engagement element (409).
20. Arrangement in accordance with claim 19, characterized in that
    the elastic counterpressure element (437) is an elastomer block or compression spring associated with the fourth engagement element (415).
21. Arrangement in accordance with one of claims 16 - 20, characterized in that
    fourth engagement element (415) can be shifted in and out between a boot-release position and a boot-retaining position in the longitudinal direction of the ski.
22. Arrangement in accordance with claim 21, characterized in that
    fourth engagement element (415) is connected to an actuator lever (438) which is situated in a stable top-dead-center position when the second engagement element is in the boot-retaining position.
23. Arrangement according to one of claims 16 - 22, characterized in that
    the longitudinal guiding of the boot (401) on ski (5) or binding plate (411) is provided by means of longitudinal rib(s) (440) and longitudinal groove(s) corresponding to one another on the tread side of the boot sole (403) and/or the sole-supporting area (439) of the ski or binding plate (411).
24. Arrangement according to one of claims 16-23, characterized in that
    third engagement element (409) is positioned in the region of the ball of the foot or the base of the toes, or between said regions, whereas second engagement element (407) is situated at the front end of the sole.

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