WO2022245237A1 - Device for releasing/fastening a kiteboard binding - Google Patents

Abstract

A device for releasing a kiteboard binding for the emergency release of the user's feet relates to the field of manufacturing sports equipment for watersports, which allows bindings to be released and refastened. The present device is intended for fastening a kiteboard or wakeboard for use in watersports in which the user is propelled by the wind, a motor boat or waves. It relates to systems for ensuring the safety of the user in the event of falling into the water or when performing dangerous tricks. The device can also be used for quickly and easily refastening a detached kiteboard or wakeboard in the water. It is suitable for fastening the user's feet to a piece of sports equipment during use and for use not only with waterski, wakeboard or kiteboard boots, but also with lightweight footwear or bare feet, and provides for the reliable release of a sports equipment binding from both feet in order to prevent injury.

Description

UNLOCKING / UNLOCKING DEVICE FOR KITEBOARD ATTACHMENT

Application area

The scope of the device for unfastening the fastening of a kiteboard during an emergency release of the athlete's legs is the manufacture of sports equipment for water sports, which provides fastenings unfastening with the possibility of re-putting on.

Purpose

The device is intended for attaching a kiteboard or wakeboard when practicing on the water, when the athlete moves due to the wind, boat or waves. Refers to human safety systems in case of falling into water and performing dangerous stunts. It is also possible to use the device when quickly and conveniently putting on an already dropped kiteboard or wakeboard in the water. It is used to fasten the legs of an athlete with a sports equipment during skiing and to use the device both for riding in boots for water skiing, wakeboarding, kiteboarding and for riding in light shoes and barefoot, while ensuring reliable release of the fastening of a sports equipment from both legs to prevent injury .

State of the art

From the prior art, the invention "Device for adjusting the curvature of a sliding panel" (CURVATURE ADJUSTMENT OF A SLIDING BOARD), patent CA3049331A1, publ. connecting panels, a sliding panel, a board retainer that engages with a sliding panel. EFFECT: invention makes it possible to change the geometry of the board for different types of skating. However, the invention is used for skidding on snow when cornering or racing. Cannot be used in water, does not solve the problem of simultaneous release of the mount.

Known invention "Support plate for fastening a sliding board" (SUPPORT PLATE FOR A GLIDING BOARD), patent US2020376360, publ.06.02.2020, MPKA63S5/00, comprising a chassis carrying a support surface configured to contact the lower part of the sole of the shoe, a damping plate and a movable wedge, and the sole exerts a vertical force. Allows you to apply the boot heel fastening using the wedge principle, however, the design in application is impractical and complex. Cannot be used in water, if sand or dirt gets in, the moving parts stop working. Cannot be used for water sports. The problem of emergency reset of the board when falling is not solved.

Known invention "Dual control fastening device", patent RU2 394 621, publ 27.09.2007 Bull. N° 27 Convention priority: 03/07/2005 FR 05 02235, MPKA63С9 / 00, A43V 13/24, which has a locking mechanism designed to interact with the connecting node of the boot, and a release system driven by the user to release the mechanism. It contains two separate control units, each of which is configured to be actuated in one of at least two control directions, equipped with a lever and rocker moving in a rotary motion, while the rocker is connected to the movable part of the locking mechanism. Refers to the field of shoe attachment devices on sports equipment for sliding. However, there is no emergency reset system, there is no simultaneity in the operation of both mounts.

Known invention "BINDING", publ. WO2021069104 dated May 2, 2020, IPC B63B32/40, relates to a mount for a board, preferably a kiteboard, comprising a footrest, a foot strap and at least one release mechanism for unfastening the foot strap. The device provides fastening of the wake-type boot to the kiteboard for the convenience of attaching the boot to the board and easy removal. However, there is no emergency board reset and no leg sync.

The invention "System for releasing the binding of a snowboard Binding", Patent US2009243259, PCT/ES2006/000545, W02007/039655, publ. from a special drive, depending on the position of the body. Helps reduce injuries from skiing and similar sports equipment by allowing the opening of the bindings that keep the boots locked to the wearer regardless of pressure or torque, exerted on the mounts, while the system can be activated voluntarily or mechanically when the specified forces are exceeded. However, it can only be used on skis and snowboards, it cannot work in water. Enables opening of ski/snowboard bindings by electrical/infrared signal. However, it does not provide a mechanical opening of the fastening in case of emergency, while simultaneously releasing both legs.

The closest is the invention "Snowboard drop system in case of emergency", patent RU 2543405, publ. rod according to the principle of a hinged loop. It is used in human security systems, in particular, in the event of an avalanche or other emergency situations when riding a snowboard sports equipment. Cannot be used in water, as there is an electrical part of the device. Allows the athlete to be released from the snowboard by opening, unfastening or breaking the bindings, however, the synchronism of opening the legs is not provided. In this device, there is no possibility of regular testing of the system’s health, and there is also a high probability of spontaneous operation of the system during regular skating, as well as failure of its elements. In addition, the technical problem of unfastening fasteners with the possibility of re-donning in case of emergency has not been solved, and there is also a risk of losing a separate signaling mechanism, for which the systems are significantly more complicated and the device is sewn into clothing.

Inventive task

The proposed device provides good fixation of the foot on the board and is the development of the main version used by advanced riders when practicing water sports. It is required to develop such a device that allows you to conveniently and securely fasten your foot on the board with one movement with one hand, which is important in kiteboarding, in the absence of support under your feet, for example, in open water away from the coast. Also, the device is required to provide an emergency release of the board when performing a trick, for example, if the board caught the edge (edge / edge) of the water. The release of the athlete's legs from the board at the end of skating must also be performed in one movement. At the same time, the proposed device is made simple, mechanical, and must be made of materials that are resistant to salt / fresh water and ultraviolet radiation. Possibility to keep working devices in contact with abrasive particles, for example, on a sandy beach, as well as uncontrolled pollution, for example, soil water suspension, debris. The proposed device provides for personal adjustment of the athlete's foot holding force on the board so that the force does not exceed the traumatic limit, but is sufficient for comfortable riding and performing tricks. In this case, both legs are released from the kiteboard at the same time.

The device allows the use of boots, hydrosocks and other types of footwear or without it.

The device is a less traumatic alternative to standard boot bindings used in wakeboarding, it is possible to use it when doing freestyle kiteboarding and when performing tricks on it.

Technical result

The technical result achieved with the proposed device is to ensure good fixation of the legs on the board, facilitate putting on and taking off, especially in water, simultaneous detachment of the board from both legs in emergency cases to avoid the risk of injury when performing tricks.

This technical result is achieved due to the fact that the device for unfastening/fastening the fastening of the kiteboard in case of emergency release of the athlete's legs contains fastening blocks (1) for the athlete's legs, a release mechanism (2), lines (3) connected to the fastening blocks. What is new is that the fastening blocks are additionally equipped with an adjustment device (4) common for each fastening block with a force release rod (5), support plates (6) corresponding to each leg and flexible clamps (7) for each leg, and the clamps (7) connected with slings (3) and rod (8) equipped with a handle at the end. The release mechanism (2) is additionally provided with a base (9) and a control unit (10), including - slings (3) connected to the corresponding clamp (7) of the fastening unit (1), force relief rod (5) on the clamps (7), the force release rod (5) is connected to the rod (11), which is fixed on the base (9), and on it (rod) there is also an adjusting device (4), a release mechanism (2) equipped with a stepped pulley (12) connected to the cam (13), placed together with the pulley with the possibility of their joint rotation on the shaft (14), rigidly fixed on the base (9). At the same time, the support plates (6) and the base (9) are fastened to the kiteboard by fasteners, a pressure roller (15) is placed on the force release rod (5) or on the rod (11), which is engaged with the cam (13), moving (cam) together (synchronously) with the stepped pulley (12). The adjusting device (4) is fixed on the force relief rod (11) and is connected to the spring (17) by means of the stop (16), and each of the straps (3) for the corresponding clamp (7) is wound on the steps of the pulley with a small diameter (18) along clockwise or counterclockwise in the same direction for the rods of the left and right legs, in other words, chasing each other, and the rod with a handle (8) is wound on a pulley step with a large diameter (19) in the same direction as the slings.

Variants of execution of each node are possible. So, for example, the support plates (6) for each leg can be made in the form of a flat base or, for example, have an orthopedic shape for soft shoes / barefoot to place a boot or soft shoes on them and are provided with racks (20, 21) on both sides athlete's legs, on the inner stand (20) there is a roller (22) holding the corresponding movable sling, and on the outer stand (21) there is a mount

(23) the end of the sling; However, the base plates can be modified and, additionally, the flat base "a" of the base plate (6) can be provided with an elastic heel

(24), rigidly fixed on a flat base (6), the back of the heel is made of an elastic material, and the outer stand (21) is placed on the rigid sidewall of the heel (24) of the support plate (6). In addition, the flat base "a" of the base plate (6) can be equipped with a heel with a spring-loaded back (24 "), made with the possibility of rotation around the vertical or horizontal axis "b" (Fig. 8), and the outer stand (21) is placed on the rigid sidewall of the heel (24) of the support plate (6), and, for example, on the flat base "a" of the support plate (6) in the front part of the toe of the shoe, there can be a rigidly fixed flexible plate (25), repeating the relief of the athlete's leg, and above a loop (26) is placed on the flexible plate (25) to hold the flexible spring-loaded clamp (7) with a sling (3) Also, a loop (27) can be additionally placed on the flexible plate (25) in the area of the toe of the shoe, rigidly fixed on a flat the base "a" of the base plate (6).At the same time, the flexible collar (7) for each leg can be spring-loaded due to the elasticity of the collar itself or due to the spring located in the outer post (21) of the base plate (6). .4) Can be performed o, for example, in the form of a screw (4) screwed into the counterpart of the rod (11) from one end, and from the other end the rod (11) is connected to the base (9) by means of a hinge (28) (Fig. 4), for example, hinge 28 is made with a cylindrical surface. A compression spring (17) is attached to the end of the screw (4) through the stop (16) (Fig. 4), triggered when the force relief rod (5) is retracted. Alternatively, with the vertical placement of the shaft (14) of the stepped pulley (12), the release mechanism (10) can be made in the form of a cylindrical rod (29) (Fig. 6) placed in the counterpart "c" of the base (9) with the possibility of movement along the surface of the mating part "c" of the base (9), and is equipped with a handle (30) that performs the function of a force release rod (5) which is inserted, for example, into a "g" shaped groove (31) made in the base (9) or handle (30) it is possible to start by the teeth of the ratchet type (conditionally not shown), made in the L-shaped groove, in which the teeth are designed to retract the handle (30) with different force when resetting. The adjusting device (4) is made in the form of a screw with a stop (16) in the form of a washer at the end, screwed into a cylindrical rod (11). One end of the cylindrical rod (29) rests against the roller (33) by means of a tension spring (32), which is triggered when the force release rod (5) is retracted to the calculated value from the groove "g" in the longitudinal direction due to the estimated length of the longitudinal part of the groove. The other end of the cylindrical rod (11) rested through the stop (16) in the adjusting device (4) (Fig. 6). The base (9) of the release mechanism (2) can be equipped with rigid posts (34), on which the rollers (35) and guides (36) are mounted for pulling the slings (3), shaft (14) of the stepped pulley (12), and hinges ( 28) rods (11), and can be made in the form of a casing with rigid posts. In this case, the shaft (14) of the stepped pulley (12) and the pressure roller (15) can be located parallel or perpendicular to the plane of the kiteboard, depending on the location, the version of the adjusting device (4) will be selected. Moreover, the cam (13) can also be designed, which, for example, can be made in the form of an asterisk with smooth outer and inner radii. In the sprocket, the outer protrusions can be both radius and sharp, and the inner depressions can be made with radii. The number of protrusions and depressions is made at least two; The radii can be made corresponding to the outer radius of the pressure roller (15, 33) and the number of protrusions and depressions is made at least two. In another version, along the outer contour, the cam can be provided with several eccentric sections in the form of a hyperbola with a radius transition between these sections. Cam (13) can also be made in the form of a simple sprocket. In this case, the pressure roller (15) can be made in the form of a sleeve, which, for example, has a rubberized surface, and the pressure roller rotates on an axis, or the pressure roller (33) can be made in the form of a cylindrical guide with a radius tip. Design options are illustrated by drawings, which do not cover all options for the component parts.

Figure 1 shows the layout of the attachment blocks (1) for the athlete's legs, the release mechanism (2), the straps (3) connected to the attachment blocks.

On FIG. 2 is a side view of the heel binding for the boot; 2a - in the closed position; 26 - in the open position;

On FIG. 3 is a top view of the heel binding for the boot FIG. 4 shows a side view with an adjusting device (4) and a release mechanism (2) provided with a base (9) and a control block (10) with a stepped pulley (12) placed in parallel

On FIG. 5 shows top view with adjuster (4) and release mechanism (2) provided with base (9) and control block (10) with stepped pulley (12) placed in parallel

On FIG. 6 shows a side view with an adjusting device (4) and a release mechanism (2) equipped with a base (9) and a control block (10) with a stepped pulley (12) perpendicular (vertical)

On FIG. 7 shows a top view with an adjusting device (4) and a release mechanism (2) provided with a base (9) and a control block (10) with a stepped pulley (12) perpendicular (vertical)

On FIG. 8 is a side view of a spring-loaded heel boot mount.

Device Implementation

The structure of the device is explained as follows. The device for unfastening the kiteboard fastening is installed in standard holes on the kiteboard, for example, in two groups of holes for fastening the right and left legs and two holes for fastening the kite handle. The device has two mirror symmetrical fastening blocks (1) for each athlete's leg. Each of the two parts has support plates, on which either the inner (20) and outer racks (21) are placed directly, or an elastic heel (23) is also placed, rigidly fixed on a flat base (6), in which the back of the heel is made of an elastic material , and the outer rack (21) is placed on the rigid sidewall of the heel (24) of the base plate

(6). Or the flat base "a" of the base plate (6) is equipped with a heel with a spring-loaded back (24 ") (Fig. 8). A flexible collar is thrown over the shoe

(7) connected with slings (3) and rod (8) equipped with a handle at the end. AT A flexible plate (25) is rigidly fixed to the front of the toe of the shoe, repeating the relief of the athlete's leg, and a loop (26) is placed above the instep on the flexible plate (25) to hold the flexible spring-loaded clamp (7) with a sling (3). On the flexible plate (25) there is a loop (27) in the area of the toe of the shoe. On the inner stand (20) there is a roller (22) holding the corresponding movable sling (3), which moves when the flexible clamp (7) is tightened on the instep of the shoe or loosens when the sling (3) is abruptly released, and on the outer stand (21) lanyard youth attachment, which rigidly attaches the lanyard (3). Flexible clamps (7) are made of textile or plastic or composite material. Flexible clamps (7) can be for convenience of fastening location on the leg and are spring-loaded with elastic elements in the form of steel or plastic or composite elastic spokes or plates (conditionally not shown). One end of the clamp (7) is fixed on the support plate (6), and the other end is passed through the fixed roller (22). Each yoke (7) covers the corresponding boot or leg of the athlete and ensures that he (she) is pressed against the base plate (6) with fixation on the kiteboard by means of the fastening block (1) with the adjusting device (4), the control block (10) and the lanyard (3 ).

The release mechanism (2) together with the control unit (10) is also fixed on its base (9) in standard holes for standard kiteboard fastening, for example, in standard holes for kiteboard handle. The body of the release mechanism can be made in the form of a kiteboard handle.

The release mechanism (2) is provided with a rod with a handle (8), with which the elastic collar (7) is tightened simultaneously on each leg by pulling the rod (8) with your hand. At the same time, it is convenient for the athlete to do this with one hand, being in the water without support. On the shore, the athlete can adjust the tightening force of the binding on the leg in the working position using the adjusting device (4).

The release mechanism (2) includes - a control unit (10), slings (3) connected to the corresponding clamp (7) of the fastening unit (1), a force relief rod (5) on the clamps (7), a reset rod connected to a rod (11 ), which is fixed on the base (9), and the adjusting device (4) is also placed on the rod (11). The control block (10) is equipped with a stepped pulley (12) and a cam (13). The cam (13) is placed together with the stepped pulley (12) with the possibility of joint rotation on the shaft (14). The shaft (14) is rigidly fixed on the base (9). The force release rod (5) is made in one piece with the rod (11) and there is a clamping roller (15) engaged with cam (13). - The pressure roller (15) is pressed against the cam (13). The cam (13) moves together or synchronously with the stepped pulley (12). The cam (13) can be made shaped with obligatory several protrusions for the pressure roller (15). The shape of the cam (13) should provide discrete rotation of the shaft (14), on which the cam itself (13) and the stepped pulley (12) are rigidly fixed. To do this, the pressure roller (15) is pressed with a force provided by the adjusting device (4).

The adjusting device (4) is fixed on the rod (11) and is connected to the spring (17) by means of the stop (16), and each of the straps (3) for the corresponding collar (7) is wound on the steps of the pulley with a small diameter (18) clockwise or counterclockwise (chasing each other) and the rod with the handle (8) is wound on a pulley step with a large diameter (19) in the same direction as the slings (3).

The control unit (10) is placed on the base (9) and fixed on the kiteboard according to standard mortgages by means of a stepped pulley (12). Stepped pulley (12) with shaft (14) located horizontally or vertically to the plane of the kiteboard.

The stepped pulley (12) is made as one piece with large diameter pulleys (19) and two small diameter pulleys (18). The stepped pulley can be assembled from separate small diameter pulleys (18) and large diameter pulleys (19), while the stepped pulley (12) is secured to the shaft (14) by means of, for example, a keyed connection, just like the cam (13). The cam (13) can be made in one piece with the stepped pulley (12). The stepped shaft (12) can be made as a single piece or as a set of pulleys fixed on the shaft (14). Both the stepped shaft (12) and the cam (13) rotate on the shaft (14) synchronously by acting on them either with the force release rod (5) or with the help of the rod (8) or by impacting the kiteboard with a force exceeding the force springs (17) .

The large diameter pulley (19) is a power pulley with a handle (8), when this pull (8) is pulled by the athlete’s hand, the pulley (19) turns and the pulleys (18) turn with it, tightening the clamps (7) on both legs at once . In this case, the tightening force is pre-adjusted by means of an adjusting device (4), which acts on the spring (17). In this case, the cam (13) rotates by two or more teeth, stopping in the working position with the roller (15 or 33) pressed by means of the rod (11).

Several versions of the control unit are possible. Execution 1.

In the control block (10), the shaft (14) of the stepped pulley (12) is located horizontally. In this case, the rod (11) at one end is movably fixed by means of a hinge (28) on the stand (34) of the base (9), and the other end of the shackle (11) is held by the tension spring (17) (see Fig. 4). The spring (17) is made with the possibility of changing the length by means of the adjusting device (4) and, therefore, reduces or increases the attractive force in the fastening block (1). By pulling the rod (8), the athlete can tighten the fastening in any uncomfortable position, even if there is no support in the water.

Execution 2.

In the control block (10), the shaft (14) of the stepped pulley (12) is located vertically.

In this case, the rod (11) is made in the form of a cylindrical part with a handle (30) (see Fig. 6). The cylindrical part of the rod (11) is placed in the counter part of the base (9) with the possibility of moving along the surface "c" of the counter part of the post (34) of the base (9). The rack (34) has the shape of a cylinder with a slot "g" (Fig. 7), raised above the base (9) to the height of the cam (13) so that the radius part of the roller (33) is pressed against the cam (13). An adjusting device (4) is screwed into the rod in the form of a screw with a stop (16) at the end. The end part of the rod (11) abuts against the compression spring (17). The handle (30) after compression of the spring (17) is held in the L-shaped groove of the stand (34) of the base (9) pressing the radius part of the roller (33) against the cam (13) with a given force. The spring (17) is made with the possibility of changing the length by means of an adjusting device (4).

The cylindrical rod (11) is equipped with a force relief rod (5) in the form of a handle (30), when it is inserted into the L-shaped groove, the spring (17) presses on the radius roller (33), and when the handle (30) is retracted into the longitudinal part of the G -groove (31), the compression spring (17) expands to create less force and the cam (13) rotates, releasing the collars (7). The compression spring works in compression, it is compressed. The opposite is true for an extension spring - it is stretched.

The adjusting device (4) is made in the form of a screw with a stop (16) at the end, when the screw is tightened, the tension spring (17) is compressed, the stop (16) moves away from the end of the cylindrical rod (11), when the screw is unscrewed until the stop (16) touches with the end of the cylindrical rod (11), the spring (17) is released. The distance that the adjuster can be adjusted device (4) must be designed for reliable rotation of the cam (33).

For stepwise adjustment of the force with which the handle (30) can be retracted in the L-shaped groove, the surface of the groove up to point "A" (Fig. 7) can be equipped with ratchet-type teeth, which in steps will allow you to hold the handle (30). In any case, the distance from point "D" to point "B" must be calculated in order to ensure sufficient relaxation of the extension spring (17).

The force of the tension spring (17) regulates the pressing force of the roller (33), which is triggered when the force release rod (5) is retracted or when the skyboard hits the water sharply, and the adjusting device (4) regulates the tightening force in the mount block (1). By pulling the rod (8), the athlete can tighten the fastening in any uncomfortable position, even if there is no support under the feet in the water.

Device operation

The device for unfastening the fastening of the kiteboard in case of emergency release of the athlete's legs works as follows.

There are two leg positions on the kiteboard:

- STARTING position - leg/boot is inserted into the binding, but is not fixed in it. In this position, putting on the board, removing the board, emergency resetting the board in an emergency is carried out. The fastening is unfastened, the flexible clamp (7) is relaxed, Fig. 2B shows that the elastic plate (25) with the element (26) rises due to the springy internal rack (24) located on the sidewall of the support plate (6), the roller (22) while the flexible plate (25) is raised. The position of the foot on the board is defined, but not rigidly fixed.

- WORKING position - the leg / boot is fixed in the mount. In this position, riding and performing tricks are carried out. For fastening, it is necessary to pull the rod (8) and, accordingly, the clamp (7) will tighten. The clamp (7) passing under the roller (22) will press the elastic plate (25) to the upper part of the foot/boot in a sliding motion. The mount will move into working position. (Fig. 2 and 3). The leg / boot is rigidly fixed to the board for comfortable riding and jumping / tricks.

When the surface of the water is “hooked” by the edge / edging of the board, the following occurs:

The usual freestyle speed is 20-50 km/h. When immersed in water, the board stops almost instantly, because. water is 800 times (on average) denser than air, while the athlete's body continues to move in a relatively rarefied environment air. At the same time, the board stops and the boots rigidly fixed on the board stop, the athlete's legs fixed in the boots also stop, and the body continues to move at a speed of 20-50 km/h (5.5-14 m/s). There are strong breaking loads in the area of the ankle, knees, neck, hitting the head on the surface of the water with injuries to the face, eardrums, concussion.

The design was developed based on the analysis of the biomechanics of the foot. Therefore, in the used form of the support plate (6), the elastic plate (25) and the collars (7) and (27) of the fastening (Fig. 2 and 3), the area of concentration of the above-mentioned loads was identified and, taking this into account, the design of the fasteners was proposed.

When water is "hooked" by the edge of the board, there is a sharp increase in the force acting on the area of concentration of loads. This force is transmitted through the power lines (3) to the control unit (10). Since the force has the nature of a jerk and exceeds the force threshold pre-set by the release mechanism (2), the release device (4) will experience an emergency release of force from the spring (17), which provides tension to the slings (3) of the control unit (10). They will be able to move freely in response to the occurrence of an emergency force in the area of concentration of loads on the athlete's leg and the sling (3) and, accordingly, the collar (7) will loosen, and the elastic plate (25) will rise to its original position. In this case, both legs / boots of the athlete will simultaneously slide out of the bindings on both sides. There will be a redistribution of the load on both parts of the mount and both legs will be released from the board at the same time.

The operation of the device is as follows.

Starting position - fastenings are unfastened. The free ends of the collars (7) are loosened, and the elastic parts (25) are lifted up. Boots/legs are inserted into bindings. To secure the legs on the board, pull the traction handle (8), the large pulley (19) of the stepped pulley (12) will rotate. This will generate a torque on the stepped pulley (12), which will be transferred to the small pulleys (18). Accordingly, the slings (3) will be wound on small pulleys (18). The straps (3) will transfer the force to the collars (7) and the boots/legs will be secured to the board. The free rotation of the stepped pulley (12), the entire shaft and the cam (13) respectively, is limited by the pressure roller (15) in both directions. Due to the difference in the diameters of the pulley (18) and (19), the force with which the fasteners are tightened is less than the force required to unfasten them. So buttoned up fasteners can only be unfastened with a force greater than the tightening force of the fastening. The force of emergency opening of the mount occurs in the case of "hooking on the edge of the water." The period of the “wave” of the cam (13) determines the discreteness of the increase in the tightening force of the flexible collars (7).

For regular unfastening of the fasteners, it is enough to pull the force release rod (5). This will raise the bar (11) and roller (15) respectively. The stepped pulley (12) will turn by turning the cam (13) with the roller (15) a few "teeth" and allow the lines (3) to unwind. The clamps (7) will loosen and the elastic parts (25) will rise, freeing the athlete's boots/legs from the board.

In case of emergency release, in order to avoid a traumatic fall, when “water is caught by the edge of the board”, there are strong loads on the boots / legs held by the collar (7) and the elastic part (25). These loads form a force transmitted through the slings (3) to the pulleys (18) and (19) stepped pulley (12). The force is converted into shaft torque (14). The cam (13) begins to rotate, overcoming the resistance of the pressure roller (15) located on the spring-loaded rod (11). Thus both boots/legs of the athlete are released from the board at the same time.

Force adjustment is performed by the mechanism (4). Turning the adjustment screw (4) changes the length of the spring (17). A change in the length of the spring (17) causes a change in the pressing force of the roller (15) against the cam (13). This changes the torque required to rotate the stepped pulley (12) and, accordingly, the force on the straps (3) of the flexible collars (7) and the elastic parts (25) of the fastening blocks (2). Thus, by turning the screws in the adjusting mechanism (4) it regulates the force of fixation of the boot/leg on the board, with standard and emergency unfastening of the bindings.

Operation of the release mechanism (2) with version 1 of the control unit (10).

When the axis of the stepped shaft (12) of the control unit (10) is placed horizontally, the rod (11), on which the pressure roller (15), the force relief rod (5) and the adjusting device (4) are mounted, rotates around the hinge (28), which allows how to fasten the boot / leg in the binding, and release them from the binding in normal mode or in an emergency reset of the bindings.

Operation of the release mechanism (2) with version 2 of the control unit (10).

With the vertical placement of the axis of the stepped shaft (12) of the control unit (10), the cylindrical rod (11) has the ability to move longitudinally along the surface "c" of the base (9) at a distance equal to the horizontal section of the L-shaped groove from point "B" to point "e". After insertion of the handle (30) of the cylindrical rod (11), which is the force release rod (5) in the case of standard fastening release, the cylindrical rod (11) is rigidly fixed in the longitudinal direction. The spring (17) is compressed by means of the stop (16) due to the adjusting device (4) in the form of a screw screwed into the cylindrical rod (11).

The groove "g" has a shape that ensures the fixation of the handle (30) in two positions: working position - the handle (30) is in a transverse position at the point "A" of the L-shaped, the spring (17) is compressed; initial position - the handle (30) is in the position at point "B", the spring (17) is free.

Starting position - fastenings are unfastened. The free ends of the flexible collars (7) are loosened and the flexible plates (25) are lifted up. Boots/legs are inserted into bindings. To secure the legs on the board, pull the traction handle (8). This will generate a torque on the shaft (14). Accordingly, the slings (3) will be wound on the pulleys (18). Through the straps (3), the force will be transferred to the collars (7) and the legs will be fixed on the board. The free rotation of the stepped pulley (12) and shaft (14) respectively is limited by the roller (33) in both directions.

For regular unfastening of the fasteners, it is enough to move the handle (30) of the cylindrical rod (11) to the position at point “A”. In this case, the handle (30) will move to the extreme left position at point "B" and release the spring (17). The force holding the cylindrical rod (11) will disappear. Cam (13) will be without a locking element - pressure roller (33). The stepped pulley (12) will release and allow the straps (3) to unwind. The clamps (7) will release, the elastic part (25) will rise and the athlete's boots/legs will be released from the board.

Emergency release - self-resetting of the board when the surface of the water is hooked by the edge of the board. In this case, there are strong loads on the clamps (7) holding the boots/legs. These loads form the force transmitted through the slings (3) to the pulleys (18). The force is converted into a torque of the stepped pulley (12). The cam (13) begins to rotate against the resistance of the spring-loaded stop (16). This leads to rotation (unwinding) of the pulleys (18) of the stepped pulley (12) and the release of the lines wound around them (3). Accordingly, the clamps (7) and the athlete's legs/boots are released from the board.

The device can also be used in wakeboarding. The distance from point "B" to point "D" must be calculated in proportion to the period of the "teeth" of the cam (13), while the more often the “teeth” are located, the more accurate the setting.

In this case, the rod (8) for manually tightening the fastening can be made soft, a cable of 4-6 mm, with a loop at the end with a light plastic handle, for example, in the form of a plastic tube with a diameter of 10 mm and a length of 5 cm, put on the loop. The length of the cable itself is 10-15 cm. You can fasten it with Velcro so that the loop does not hang out, for example, for the aesthetics of fastening.

In both versions, the tightening force of the collars (7) during fastening is a multiple of the number of “teeth” of the cam (13) on the shaft (14), while the rotation by one “tooth” is equal to several millimeters of the translational shortening of the collar (7). When calculating the unfastening force of the system, the multiplicity of the ratio of the diameters of the small (18) and large (19) pulleys is taken into account.

The force of the adjustment device screws (4) depends mainly on the weight of the rider, so it is possible to make a color scale next to the screw, for example, if 50 kg, then the screw is screwed up to the blue mark, if 70 kg, then to the green mark, etc. Other influencing factors can be taken into account, for example, height, board size, board weight, riding style.

Thus, in the proposed device, a good fixation of the leg on the board is achieved, facilitating putting on and taking off the board, especially in water, and simultaneous release of the athlete's legs from the board when falling to reduce the level of injuries in sports.

Claims

FORMULA OF THE INVENTION 1. A device for unfastening/fastening the fastening of a kiteboard in case of an emergency release of the athlete's legs, containing fastening blocks for the athlete's legs, a release mechanism, lines connected to the fastening blocks, characterized in that the fastening blocks are additionally equipped with an adjustment device with a reset rod, common for each fastening block forces corresponding to each leg with support plates and flexible clamps for each leg, the clamps are connected to slings and a rod equipped with a handle at the end, the release mechanism is additionally equipped with a base and a control unit, including - slings connected to the corresponding clamp of the fastening block, a force relief rod on clamps (rod) connected to a rod, which is fixed on the base, and an adjusting device is also placed on it (rod), the release mechanism is equipped with a stepped pulley connected to a cam placed together with the pulley with the possibility of turning them on a shaft rigidly fixed to the base , P At the same time, the support plates and the base are fixed by fasteners to the kiteboard, a pressure roller is placed on the force relief rod or on the rod, which is engaged with the cam, moving together (synchronously) with the stepped pulley, the adjusting device is fixed on the force relief rod and is connected to the stop by means of a stop. spring, and each of the slings for the corresponding collar is wound on the steps of a pulley with a small diameter clockwise or counterclockwise in the same direction, and the rod with a handle is wound on a step of a pulley with a large diameter in the same direction as the slings. 2. A device for unfastening/fastening a kiteboard mount according to claim 1, characterized in that the support plates for each leg are made in the form of a flat base for placing a boot or soft shoes or without shoes on them and equipped with racks on both sides of the athlete's foot, on the inside the rack has a roller holding the corresponding movable sling, and on the outer rack there is a fastening of the end of the sling; 3. A device for unfastening/fastening a kiteboard mount according to claim 2, characterized in that the flat base of the base plate is additionally provided with an elastic heel rigidly fixed on a flat base, the back of the heel made of elastic material, and the outer stand is placed on the rigid sidewall of the heel of the support plate; 4. The device for unfastening/fastening the kiteboard mount according to claim 2, characterized in that the flat base of the base plate is additionally equipped with a heel, with a spring-loaded back, made with the possibility of rotation around a vertical or horizontal axis, and the outer rack is placed on the rigid sidewall of the heel of the base plate ; 5. A device for unfastening/fastening the fastening of a kiteboard according to paragraphs 2,3,4, characterized in that on the flat base of the support plate in the front part of the toe of the shoe, a flexible plate is rigidly fixed, repeating the relief of the athlete's leg/boot, above the instep on a flexible plate there is a loop for holding a flexible spring-loaded clamp with a sling; 6. A device for unfastening/fastening a kiteboard mount according to claim 5, characterized in that a loop is additionally placed on the flexible plate in the area of the toe of the shoe, rigidly fixed on the flat base of the base plate; 7. A device for unfastening/fastening a kiteboard mount according to claim 1, characterized in that the flexible collar for each leg is spring-loaded due to the elasticity of the collar itself or due to a spring placed in the outer rack of the base plate; 8. A device for unfastening/fastening the kiteboard mount according to claim 1, characterized in that the adjusting device is made in the form of a screw screwed into the counter part of the rod from one end, and from the other end the rod is connected to the base by means of a hinge, to the end of the screw through the stop is attached a compression spring that is activated when the force relief rod is withdrawn; 9. A device for unfastening/fastening the kiteboard mount according to claim 1, characterized in that the adjusting device is made in the form of a screw with a stop at the end, screwed into a cylindrical rod placed in the mating part of the base with the possibility of moving along the surface of the mating part of the base, and equipped with a rod force relief in the form of a handle, which is inserted into the L-shaped groove made in the base, one end of the cylindrical rod rests against the roller by means of a tension spring, and the spring is activated when the force relief rod is withdrawn, and the other end of the cylindrical rod is connected through the stop to the screw of the adjusting device . 10. Device for unfastening / fastening the fastening of the kiteboard according to claim 1 characterized in that the base of the release mechanism is equipped with rigid posts on which the rollers and guides for pulling the slings, the shaft of the stepped pulley and roller and the rod are attached; 11. A device for unfastening/fastening the kiteboard mount according to claim 10, characterized in that the base of the release mechanism is made in the form of a casing with rigid racks; 12. A device for unfastening/fastening the kiteboard mount according to claim 1, characterized in that the shaft of the stepped pulley and roller is parallel to the plane of the kiteboard; 13. A device for unfastening/fastening the kiteboard mount according to claim 1, characterized in that the shaft of the stepped pulley and roller is located perpendicular to the plane of the kiteboard; 14. A device for unfastening / fastening the kiteboard fastening according to paragraphs. 12 or 13, characterized in that the cam is made in the form of an asterisk with external projections, and the internal depressions are made with radii corresponding to the outer radius of the pressure roller and the number of projections and depressions is made at least two; 15. Device for unfastening / fastening the fastening of the kiteboard according to p.p. 12 or 13, characterized in that the outer contour of the cam is provided with several eccentric sections in the form of a hyperbola with a radius transition between these sections; 16. A device for unfastening/fastening the kiteboard mount according to claim 12, characterized in that the pressure roller is made in the form of a sleeve that rotates on an axis; 17. A device for unfastening/fastening the kiteboard mount according to claim 13, characterized in that the pressure roller is made of a cylindrical guide with a radius tip.