SI21914A - Underlay plate with asymmetricity setting function for ski with expressed side curvature - Google Patents

Abstract

An underlay plate with asymmetricity setting function for ski with expressed side curvature enables skiing with the carving technique in a manner that the skis run in a turn along two parallel lines - sections of two concentric circles in ideal conditions - while a skier does not need additional energy to maintain parallel position of the skis and can carry out a turn without unwanted vibrations at normal, not highly increased body activity. In the underlay plate with asymmetricity setting function for ski with expressed side curvature, which consists of a front part (1), rear part (24) and a switch-over assembly (5), the setting of asymmetricity - which means the determination of the left and the right ski - is carried out within the switch-over assembly (5) consisting of a ball weight (17 and 18) assembly, two mechanical stoppers (25 and 26) and a housing on which a fine regulator in the form of aluminium piston (6) with a magnet (19) is moving. The weight assembly, composed of one steel ball (18) and one soft, easily compressible rubber or similar material ball (17), is adjusted by allocation of the said two balls and by means of setting of the said side mechanical stoppers. Gravity-induced displacement of the balls (17) and (18) within the weight assembly determines, which ski is the interior and which the exterior one in the turn. The underlay plate allows maximum possible bending to the interior ski, while it is limiting continuously the line of bending to the exterior ski, increasing thus slightly the radius of the circle in a turn so that the traces of the turn are two parallel curves similar to sections of two concentric circles displaced for the distance between the skis.

Description

The field of technology

The invention belongs to the field of ski equipment, more specifically to the field of accessories for securing safety ties and for improving the driving characteristics of alpine skis with a distinct lateral arch. A technical problem

A technical problem is the design solution of the pad between the ski and the circuit, which allows skiing with the notch technique so that the skis run on two parallel lines during the turn, which are ideally a section of concentric circles, and that the ski does not require additional energy for maintenance parallel hold the skis. In addition, the solution must allow the ideal notch turn to be performed without unwanted vibration even during normal, not significantly increased physical activity. The solution must also be technologically simple and economically viable.

For decades, the ski technique has been based on turning a single ski, an external ski. The trail of such a turn in the snow is a single line. With a notch ski technique made possible by skis with a pronounced lateral arch, the skier is on both, practically equally loaded skis, which have the same inclination as with the snow base and which in trace snow make a trace of two parallel arches spaced as far apart as possible. the posture of the legs, that is, about 0.5 m in intense cornering and higher speed. A real notch is only possible if the shape and deformation of the ski and washer system are such that they produce the perfect curved shape of the ski curb as closely as possible to the section of the circle. With such a curved edge, the skier literally cuts into the snow base, and the traces of such perfect turns are two parallel curves, as close as possible to the sections of circles of two concentric circles.

Due to the physical limitations and the resulting problems, it is difficult to derive the ideal notch turn. To illustrate, an example of a typical intense notch turn with a radius of 5 m is presented in Figure 5 and a distance of 0.5 m between the inner and outer skis. The skis are equally loaded, meaning that they carry each half of the skier's weight Fg, and have the same inclination as a with respect to the snow base. If we consider the inner and outer skis separately as two separate systems, it can be seen from Figure 5 that the skier with the inner and outer skis make a similar turn, the circles have the same radius and are spaced apart by the distance between the skis (0.5 m). However, at the middle of the bend, the circles intersect because the skis do not run in two parallel lines all over the bend, but are parallel at the beginning of the turn and close to the center of the bend. This means that shortly after the start of the turn, the skier must use his or her own muscle energy to hold the skis in parallel.

Particularly when taking turns on difficult terrain, at higher speeds and in tricky driving situations, but also because of the ergonomic characteristics of the human body, the load on the outer ski in the turn increases compared to the load on the inner ski, and consequently the load on the inside as well as on the curb extension the outer ski becomes larger than the edge extension of the inner ski. Figure 6 shows that the resultant force on the outer ski is larger, so the outer ski flexes more. Due to the increased bending of the outer ski and the greater angle of its inclination to the snow base, the edge of the outer ski cuts into the base a curve similar to a circle with a radius smaller than the radius of the desired bend, but especially smaller than the radius of the circle cut by the inner, less stressed and less inclined ski. The consequence of the described situation is that the skier has to invest even more internal energy to hold the skis in parallel and to make constant correction of the turn, making the running lines of both skis less and less like circles. The delicate dynamic balance of the skier is disturbed, one of the skis lags behind and the upper body rotates, but above all the skier does not make the turn he envisaged, loses speed and balance, consumes a lot of energy and gets tired quickly.

Figure 7 shows an example of an ideal notch turn in which the skis run all the way in parallel lines, the skier is in dynamic equilibrium, there is no unnecessary use of internal energy to maintain the parallel position of the skis, and it is the fastest way of performing the turn, which is especially important for alpine skiers. Theoretically, with the equipment known so far, such an example of a turn could be made only by an excellent skier, who would be able to load the inner ski in a bend more than an external ski and at the same time increase the extension of the inner ski compared to the outer ski by several degrees. From an ergonomic point of view, this is very difficult to do, even impossible for most skiers, and leads to great dynamic instability. The pad, with the integrated asymmetry adjustment function of the invention, allows such ideal turns to be made for skiers of all types, from recreational skiers to competitors, depending on the settings provided by the invention.

The prior art

Pads are known, for example, the World Cup-Air board of the Italian manufacturer Vist, designed to provide the skier with the basic function of a pad under a safety harness that lifts the skier so that he does not hit his shoe in the snow and thus allows him to retains maximum natural bending of the skis and also dampens vibration.

U.S. Patent 6,659,493 discloses a mounting plate for snowboards or a snowboard that provides better cornering, improves ski or board flexibility, and provides better vibration absorption. The mounting plate is universal, meaning that it can be used on all types of skis and boards and on all types of ties, and its advantages are most noticeable for skis with a prominent lateral arch. The aforementioned features of the board are made possible by two <5 bond segments made in the form of an elastic layer of rubber or silicone, in which a rigid support element is placed along the transverse axis perpendicular to the longitudinal axis of the ski, dividing the elastic layer into two parts, of which one flexes the ski while flexing and the other stretches. In addition, the two bonding segments, which are connected via their upper surface, can move longitudinally in an elastic layer.

The pad described in DE 198 43 866 A1 provides the optimum line when skiing with a pronounced lateral arch, with the position of the ski boot elevated and thus reducing the possibility of the ski boot being touched by the snow shoe when turning larger. this causes the edge of the curb to be lost, and the plate is fixed to the ski by two bearing assemblies, which allow it to move in a longitudinal direction and to make a certain move in relation to its transverse axis.

The ski performance and handling enhancement device described in U.S. Pat. No. 5,758,894 has two elongated, flat-shaped elements that are specially positioned in the region between the toe and heel set of ski ties and have, on one side, coupling members for mounting on the ski, on the other hand, retaining members which allow the longitudinal sliding of said elongated plate members with respect to the ski. The device maintains the same relative position (in the center of gravity) between the shoe and the ski at all times, so the possibility of skiing is always optimal.

The well-known ski pads provide some additional features in addition to lifting the ski and adequately moving the ski boot away from the snow base in turns, such as vibration damping, greater ski flexibility or better handling. The soleplate of the present invention solves, unlike the known designs of washers or washers, the problem of deriving an ideal turn with skis with a distinct lateral arch so that the skier, without unnecessary energy consumption and performing corrections, performs an ideal notch turn and tracks of snow-based skis. always parallel, as the skis do not force the lungs to close towards the center of the bend. The plate of the present invention, with its adjustable feedback design, also acts as an active dampener for the unwanted vibrations of the front and rear skis.

The turn shown in Figure 7 can be compared to the situation when turning the car. Turning on a single ski is comparable to turning on a motorcycle, and turning on two parallel, spaced skis with turning on a car. While turning on a motorcycle is physically easy, turning with a car, that is, with a pair of front-spaced steering wheels, can ideally be accomplished only by using the Ackermann principle of separately engaged wheels, where the inner wheel travels around a smaller circle than the outer one when turning. This is achieved by a larger angle of rotation of the inner wheel compared to the outer wheel. Ackermann's invention has been used by virtually all cars for a century. His idea of a separate, different movement of the inner and outer wheels when cornering was an inspiration to solve a similar problem in making ski turns with a distinct lateral arch.

Description of solution to a technical problem

An essential feature of the washer between the circuit and the ski with a distinct lateral arch with the built-in asymmetry adjustment feature is that the washer has a special construction and is fixed to the ski only in one line in the front of the board at the beginning of the front of the safety tie, while when tightened in three transverse lines to allow the ski to maintain its maximum natural flexibility. The function of asymmetry of the ski, that is, determining the inner or outer ski and, consequently, the different behavior of the inner and outer ski, is realized in the switching assembly of the base plate by means of a weighting element formed either by one steel and one soft ball of rubber or similar material, or by one the steel ball itself. The construction of the washer plate according to the invention also provides effective damping of unwanted vibrations.

The washer plate with the built-in asymmetry function of the invention is described in more detail below by means of the figures which show:

Figure 1 - Longitudinal cross-section of a ski-mounted washer Figure 2 - Floor plan of a ski-mounted pad Figure 3 - Under-floor plan with an overlay

Figure 4a - Two-ball switching assembly and left and right ski operation in turns

Figure 4b - switching assembly with one steel ball and the operation of left and right turns in turns

Figure 5 - sketch of Example 1 of the turn

Figure 6 - sketch of Example 2 of the turn derivation

Fig. 7 is a sketch of the turn of the turn when using the washer according to the invention

The subject of the invention is a washer for attaching ties to longitudinally symmetrical skis with a prominent lateral arch. The baseplate according to the invention is fixed to the ski in four transverse lines, I, II, III and IV, in eight places. Only in line I at the beginning of the front of the board is the attachment fixed, in the other three lines, II, III and IV, and towards the end of the board, the attachment is longitudinally elastic, allowing maximum natural flexion of the loaded ski, with the support plate depending on load and consequently from bending of the ski, with minimal friction, it moves along the ski longitudinally.

The washer has a tensioner 4 of springs 16, spring 16, changeover assembly 5, rear lever 12, return lever 10 and rear lever 11. The changeover assembly 5 consists of a weighting assembly of beads and 18, two mechanical stops 25 and 26 and a housing according to which moves a fine regulator in the shape of an aluminum piston 6 with a magnet 19. These components of the washer form a complex mechanical system that allows the ideal turns to be made in notch by two parallel curves, similar to sections of concentric circles spaced by the distance between skis. Turning is a complex physical event that is influenced by many variables, such as terrain characteristics, type of snow, speed of turns, knowledge and psycho-physical characteristics of the skier.

The washer plate with built-in asymmetry adjustment function consists of a front part 1, a rear part 24 and a switch assembly 5. The inside of the switch assembly 5 must be watertight, so there are seals on the side limiters; an aluminum piston with magnet 6 enters the interior of the assembly 5 also via a gasket, at the top of which the assembly is airtightly sealed with a thin layer of tempered glass or similar materials. Said parts of the washer are preferably made of plastics, aluminum, various alloys or composite materials. They are screwed with a few millimeters thick cover plate 3 of aluminum, alloys or similar materials. The materials used to make the washer should be as light but solid as possible. The base plate is fixed to the ski 2 in four transverse lines, as shown in the technical drawing in Figure 2. In line I the plate is fixed to the ski with a screw connection, in line II there is a hole in the front part 1 of the base plate of a special oval shape and using two simple spacers allows for smaller longitudinal movement, and in the lines lil and IV, the back of the washer 24 is attached to the ski by means of larger spacers and specially shaped grooves 20 on the back of the 24. The described mounting method of the washer allows for any longitudinal movement of the washer, while the washer is not movable in the lateral and vertical directions. When bending the ski, therefore, the base plate also freely moves with the help of two transverse notches 9 at the front and back of the plate, adapting to the upper bent surface of the ski, with a maximum displacement of the rear portion 24 of the base plate with a maximum bending of the ski over 5 millimeters. To reduce the friction, a thin base of stainless steel sheet thickness of 0.4 mm is placed under the back of the panel 24.

The front part 1 of the washer has a longitudinal groove in the middle, through which the lever 14 of the tensioner 4 travels. The tensioner 4 of the spring 16 consists of a housing which is screwed to the front of the ski at the selected location, and of a transversely fastened bracket 15 of the lever 14, which it is designed to allow the length of the lever 14 to be varied, thereby tensioning the spring 16. The spring 16 presses elastically on a switching assembly 5 having a transverse groove through which a steel ball 18 and a soft ball 17 travel when gravity is tilted. 5 with the side restraints 25 and 26 can be seen from Figure 4a, which is the essence of the invention, because by arranging the balls 17 and 18 and by setting the side restraints 25 and 26 it is determined which of the otherwise symmetrical skis will be left and which right, gravitationally conditioned motion consequently, the ball determines which ski is inside and which ski is inside.

If the ski is internally in a bend, a connection is made between the tensioner 4, the arm 15 of the arm 14, the arm 14, the spring 16, the switching assembly 5, the soft rubber ball 17, the fine regulator in the form of an aluminum piston 6, and the return arm 10 with the lever 12. namely, the bending of the ski moves the washer plate longitudinally along the ski and presses the lever 12 in the housing 13 through the lower rear lever 11, which causes the lever 12 to reverse the direction of movement as the return lever 10 moves in the opposite direction to the base plate and, depending on leverage ratio increases the displacement amplitude of the rear of the washer plate. In extreme ski bending, the rear end of the washer also moves more than 5 mm in the direction of the rear of the ski, and at a lever ratio of 1: 3, this means that the return lever 10 moves more than 15 mm in the direction of the front of the ski. At the beginning of the return lever 10, a fine regulator in the form of an aluminum piston 6 with a magnet 19 is mounted, which through the seal enters the housing of the switching assembly 5 and, depending on the amplitude of the movement of the feedback loop, more or less pressure on the gravitational elements. Because the soft ball 17 made of rubber or similar materials is easily compressible, the deflection of the ski is practically unobstructed and consequently maximal when the feedback loop is reached through ball 17.

However, if the ski is external in the turn, the connection described above between the end elements, that is, between the tensioner 4 and the lever 12, is established through a steel ball 18 which is lever 12 through a fine-tuned piston arm 6 in the form of an aluminum piston 6 with a magnet 19 it pushes into the switch housing 5. This is secured by the spacers to the guides 23 on the cover plate 3. The clamp allows longitudinal movement of the switch assembly 5 only in the direction of the main work spring 16. The greater bending of the ski thus causes more pressure on the front of the switch assembly 5 in. a working spring 16, the strength of which is adjusted by the carrier 15 of the lever 14. The magnet 19 arranges the steel ball 18 exactly in the center of the piston 6.

In the initial phase of the turn, when the skier tilts the skis, the pad recognizes the internal or external ski in a given turn. The inner skis allow the base plate to flex as much as possible, while for the outer skis it limits the bending line continuously, thus slightly increasing the radius of the circle in the turn. Following this turn, there are two parallel curves similar to the sections of concentric circles that are spaced by the distance between the skis.

The operation described in Figure 4a is suitable for performing longer turns, i.e., turns with higher radii and at higher speeds, and is therefore suitable for giant slalom and fast disciplines. From the point of view of vibration damping, it is important that in each turn, both internal and external skis have a feedback loop through a steel or soft ball, which ensures that the unwanted vibrations of the front and rear of the skis are eliminated as quickly as possible.

Figure 4b shows the operation of a switching assembly 5 in which a single steel ball is confined on one side with a short stop, 25 and 26, and on the other side with /

lateral limiter 30. This choice is suitable for extreme turns and slalom racing, ie for making turns with the smallest possible radii at a large angle of the ski attachment to the snow base, where a greater bending difference between indoor and outdoor skiing is required. In terms of vibration damping, the external ski is feedbacked via a steel ball to provide adequate damping, while the internal ski in this turn remains without a feedback loop, as the fine aluminum piston 6 controller moves freely through the switching assembly 5 bypassed steel balls. Suitable damping in this case is provided by a front spring 14 of a spring and a spring 16 that acts as a shock absorber for the front of the ski, while the rear of the ski uses as a shock absorber an elastic connection between the rear lever 12 and the return lever 10 and the spring 8 of the return lever 10 The pressure coil spring 8 lies in a longitudinal groove at the rear of the 24 panel. A return lever 10 passes through it. The spring 8 is limited at the front by a vertically movable spring lock 7, and at the rear of the spring 8 a spring 21 is mounted to adjust the initial spring elasticity of 8, while each bending of the ski via the backward movement the lever 10 and the locking blocks 21 mounted thereon additionally presses the spring 8 in which energy is stored to help balance the ski as quickly as possible when the bend is reduced. Similarly, the main working spring 16, mounted in the longitudinal groove of the front part 1 of the plate, which, when unloaded, i.e. unbent ski, is elastically pressed into the switching assembly 5, which is therefore in the extreme position, as permitted by the method of mounting via the guides 23 At the moment when the ski bends, the distance between the tensioner 4 of the spring 16 and the switching assembly 5 is reduced, the spring 16 shrinks, and the stored energy ensures that the ski returns to the upright position as quickly as possible.

By selecting the spring type 16 and adjustable spring tension control, the desired spring behavior diagram is achieved, that is, the desired spring shrinkage dependence on the thrust force. A fine aluminum piston 6 controller can also be used to determine precisely when a ski bends back through a steel ball and how the behavior of the ski changes, and when, how and for how much free ski bending is reduced, allowing the skier, that the outer ski runs a slightly larger circle into the snow than the inner ski, so that the circles are concentric, spaced apart by the distance between the open skis.

The pad according to the invention enables the ideal turns to be made after the skier has properly adjusted the following adjustable parameters on the pad based on the given and required parameters such as skiing technique, running speed, body weight and physical strength, type of terrain and grounds:

- Front spring strength: Adjusts the spring tension of the 4 springs, specifically the front lever bracket 15.

- Feedback loop and gravity element: adjustable in the base plate box 28 by turning a fine aluminum piston 6 knob.

- Lever lever ratio 12: The length of the upper lever lever can be adjusted continuously, thereby adjusting the ratio of the lower and upper lever levers to represent the gain factor. Move the rear lever 11 in the direction of the rear of the ski with the lever in the opposite direction and increase with the lever factor. The ratio of the lower and upper levers of the lever 1: 3 in practice means that when the ski is bent high and consequently the rear lever 11 is moved by 5 mm, the lever is reversed and increased by a factor of 3, which means that the reverse lever is moved in the direction towards the front of the ski. more than 15 mm.

Which of the otherwise symmetrical skis will be left or right is determined by the arrangement of the two balls and the installation of side mechanical restraints. In the case of using a single steel ball, the determination of the left and right skis depends on which side the longer or shorter side limiter is mounted on.

Claims (5)

1. A pad with a function of asymmetric adjustment of skis with a prominent lateral arch consisting of a front part 1, a rear part 24 and a switching assembly 5, characterized in that the asymmetry adjustment, that is to say determining the left or right skis, is carried out in a switching assembly (5) consisting of a weighting assembly of beads (17 and 18), two mechanical stops (25 and 26) and a housing for moving a fine regulator in the form of an aluminum piston (6) with a magnet (19); that the weight assembly consisting of one steel ball (18) and one soft, easily compressible ball (17) made of rubber or similar materials is adjusted by arranging said two balls (17, 18) and by adjusting mechanical side restraints (25 and 26); that the gravitationally determined motion of the balls (17 and 18) of the weighting assembly determines which ski is inwardly bent and which of the bends, and that the inner skis allow the base plate to flex as much as possible, while for the outer ski it continuously limits the bending line and thus the curve slightly increases the radius of the circle so that there are two parallel curves along the curve, similar to the sections of concentric circles that are spaced by the distance between the skis. Support plate according to claim 1, characterized in that the interior of the switching assembly (5) is watertight and is sealed by seals on the side stops (25 and 26), with a seal at the inlet of the aluminum piston (6) with a magnet ( 19) inside the switch assembly (5) and with a thin layer of toughened glass or similar materials on top of the switch assembly (5). Support plate according to claims 1 and 2, characterized in that the support plate is fixed to the ski (2) in four transverse lines (I, II, II, IV) such that the attachment is fixed by screwing connection, only in the first line (I) at the beginning of the front part (1) of the plate, while in the second line (II) there is a hole in the front part (1) of the base plate of a special oval shape and allows for smaller longitudinal movement using two simple spacers, in the last two lines (III and IV), the back part (24) of the washer is fixed to the ski (2) by means of larger spacers and specially shaped grooves (20) on the back part (24) of the plate so that in the last three lines (II, II, IV) the attachment is longitudinally elastic and allows maximum natural bending of the loaded ski, with the base plate moving along it depending on the load and consequently on the bending of the ski; that when bending the ski, the base plate also freely moves and adapts to the upper bent surface of the ski with the help of two transverse cutouts (9) on the front part (1) and the back part (24), with maximum displacement of the rear part (24) of the base plate with a maximum ski bending of more than 5 mm; in order to reduce friction under the back (24) of the plate, a thin base (27) of stainless steel 0.4 mm thick is installed. Support plate according to claims 1 to 3, characterized in that the front part (1) of the plate has a longitudinal groove in the middle, through which the tensioning arm (14) of the main working springs (16) travels; that the tensioner (4) consists of a housing that is screwed to the front of the ski and a transversely gripped bracket (15) of the lever (14), which is designed to allow changing the length of the lever (14) and thereby tensioning the spring ( 16); that the spring (16) presses elastically on a switching assembly (5) having a transverse groove through which a steel ball (18) and a soft ball (17) travel due to gravity when tilting the skis. Support plate according to claims 1 to 4, characterized in that the connection between the tensioner (4), the bracket (15) of the lever (14), the lever (14), the spring (16) is established in the inner ski in the turn. , switching assembly (5), soft ball (17), fine aluminum piston regulator (6), lever (10) with lever (12); that, when bending the ski, the base plate moves longitudinally along the ski and presses the lever (12) in the housing (13) over the lower rear lever (11), which causes the lever (12) to reverse the direction of movement, since the return lever (10 ) moves in the opposite direction to the base plate, and, depending on the ratio of the lever arms, increases the displacement amplitude of the rear portion (24) of the plate; that in extreme bending of the ski, the rear end of the washer also moves more than 5 mm in the direction of the rear of the ski, which at a lever ratio of 1: 3 means that the return lever (10) moves towards the front of the ski by more than 15 mm; that a fine regulator in the form of an aluminum piston (6) is fitted with a magnet (19) at the beginning of the feedback lever (10), which, depending on the amplitude of the motion of the feedback loop, more or less presses the ball (17 and 18); that due to the easy compressibility of the soft ball (17), when the feedback loop is established through the ball (17), the bending of the ski is practically unobstructed and consequently maximum. Support plate according to claims 1 to 5, characterized in that, in the case of an external ski, the connection between the end elements, that is, between the tensioner (4) and the lever (12), is made via a steel ball (18) which the lever (12) pushes it through the return lever (10) with a fine regulator in the form of an aluminum piston (6) with a magnet (19) into the housing of the switching assembly (5), which is fixed to the guides (23) on the cover plate (spacers). 3); that said clamping assembly (5) allows longitudinal movement of the clutch assembly (5) only in the direction of the main working spring (16); that greater bending of the ski causes more pressure on the front of the switch assembly (5) into the working spring (16), the strength of which is adjusted by the arm (15) of the lever (14); that the magnet (19) arranges the steel ball (18) exactly in the center of the piston (6). The washer according to claims 1 to 6, characterized in that, by properly selecting the type of main working spring (16) and adjustable tensioning of the spring tension with the tensioner (4), the desired dependence of the shrinkage of the spring on the thrust force is achieved while the fine spring tensioner in the form of an aluminum piston (6) determines precisely when the ski bending is feedback via the steel ball (18) and when, how and for how much the possibility of free bending of the ski is reduced, thereby allowing the skier to the outer ski skirts a slightly larger circle than the inner ski, so the circles are concentric, spaced apart by the distance between the open skis. A pad according to claims 1 to 7, characterized in that in each turn, both inner and outer skis have a closed loop, namely the outer ski via a steel ball (18) and the inner ski via a soft ball (17). , so that the unwanted vibration of the front and rear of the skis is eliminated as quickly as possible. Support plate according to Claim 1, characterized in that the front part (1), the rear part (24) and the switching assembly (5) are preferably made of plastics, aluminum, various alloys or composite materials and are screwed on some millimeters thick covering plate (3) of aluminum, alloys or similar materials. 10. The base plate according to claim 1, 3, 4, 7 and 9, characterized in that the base plate is designed for performing extreme notches and slalom competitions, that is, for performing turns with the smallest possible radii at high the corner of the ski attachment to the snow base, where a greater difference in bending is required between the inner and outer skis, a switching assembly (5) with a single steel ball (18) bounded on one side by a short lateral stop (25, 26), at on the other hand, with a long side restraint (30). 11. A pad according to claim 10, characterized in that a suitable vibration damping in the outer ski is provided by a feedback through the steel ball (18), while in a suitable vibration damping in the inner ski, in which the feedback loop is not established, since a fine aluminum piston-shaped regulator (6) moves freely through the switching assembly (5) past the withdrawn steel ball (18), providing the front tensioner (4) of the main working spring (16) and the spring (16) acting as a shock absorber for the front a part of the ski, and the back of the ski uses as a shock absorber an elastic connection between the rear lever (12) and the return lever (10) and the pressure coil spring (8) of the return lever (10); that the spring (8) lies in a longitudinal groove at the rear (24) of the washer plate and that a return lever (10) passes through it; that the spring (8) is bounded at the front by a vertically movable barrier (7), and at the rear of the spring (8) there is a spring lock (21) which adjusts the initial spring elasticity (8); that, while driving, each bending of the ski further presses the spring (8) through the movement of the return lever (10) and the locking mechanism (21) therein, which saves energy so that, at the end of the turn, when the bending of the ski is reduced, it helps to straighten as quickly as possible ski; that the main working spring (16) mounted in the longitudinal groove of the front part (1) of the plate is additionally taken care of by the smoothing of the skis, which elastically presses into the switching assembly (5) in an unladen and therefore unbending ski, which is therefore in an extreme position, such as allows him a way 5 via the guides (23), and to reduce the distance between the tensioner (4) of the spring and the switching assembly (5) as soon as the ski is bent, the spring (16) shrinks, and the stored energy ensures the fastest return of the ski into the upright position.