RU2327499C1 - Sholin flippers - Google Patents

Abstract

FIELD: sport.

SUBSTANCE: rowing surface of flipper is in the shape of released dome with collar and strengthening ribs. Each flipper fixture to swimmer's leg is represented with circumferentially adjustable collar. Supporting loop is directed inside dome by its side sections and attached to collar. Flexible bottom of supporting loop is designed to mate with arch of swimmer's foot. Supporting loop is provided with fixture to be displaced in the section of high instep. Strengthening ribs of dome are provided with soft partitions fixed to corresponding ribs of hard sections of loop. Strengthening ribs may be not projected outside supporting plane of swimmer's foot.

EFFECT: simplification of design and flipper manufacture technology, improvement of flippers user-friendliness.

2 cl, 4 dwg

Description

The present invention relates to physical education and sports and can be used by swimming enthusiasts, including tourists, for efficient movement in water or maintaining a vertical position in it.

Known flippers (SU 1725745 A3, class A63B 31/08, 1992.04.07) containing a rowing surface in the form of a convex rigid plate, strengthened on the base with shock absorbers at the location of the swimmer's foot rise. On the base there is also a case for a swimmer’s lower leg and a compensator, the material and mass of which are selected depending on the total mass of the fins. The swimmer conducts a sharp jerk movement of the legs until they are fully straightened, as a result of which the athlete moves in the water in the direction opposite to the jerk movement of the legs.

The reasons that impede the achievement of the technical result indicated below when using well-known flippers include their large dimensions, structural complexity and small rowing surface area.

Known Meloyan flippers for swimming by breaststroke (RU 2093231 C1, cl. 6 АВВ 31/11, 1997.10.20.), Intended for use by amateurs and professionals of surface and underwater swimming. Structurally, each flipper contains a galosh, to the sole of which, by means of a strap and a cracker with four axes of rotation parallel to each other, a fan-like rowing surface is attached in the form of two pairs of rotary blades, self-folding and self-opening of which is carried out due to their interaction with the aqueous medium during their reciprocating movement.

The reasons that impede the achievement of the technical result indicated below when using well-known flippers include their structural complexity, large dimensions and the inability to move in them on a solid surface - the shore and / or bottom of the reservoir.

Known flippers for swimming the breaststroke method (RU 2108830 C1, cl 6 A63B 31/08, 1998.04.20), designed for effective initial training in swimming the breaststroke method. Each flipper contains a galosh and a rowing surface connected with it, located in the sagittal plane of the blade with removable parts - the plantar, ankle front and ankle back. The shape of the tibial parts of the blade is a trapezoid, expanding to the canopy. On the side of the front part of the blade facing the lower leg and on the rear part, signal protrusions located on the stiffening ribs are designed to interact with the swimmer's lower leg and buttocks, in order to ensure self-control over the correct execution of the swimming technique.

The reasons that impede the achievement of the technical result indicated below when using well-known flippers include their structural complexity, large dimensions and the inability to move in them on a solid surface - the shore and / or bottom of the reservoir.

Also known are fins for swimming by the breaststroke method (SU 1766427 A1, class A63B 31/08, 1992.10.1992), containing two blades for each arch-shaped fins. The base of the fins at the top of the arch is equipped with fasteners to the swimmer’s foot. In water, when the swimmer pulls the legs under him, the blades come closer under the pressure of the water, thereby reducing the resistance of the aquatic environment, and when pushing the legs the blades diverge and lie in the open position on the sole of the swimmer’s foot, forming a rowing surface, increase the supporting resistance of the aquatic environment at the moment of repulsion .

The reasons that impede the achievement of the technical result indicated below when using well-known flippers include their structural complexity, large dimensions and inconvenience of operation due to the inability to stand and move on them on a hard surface - the shore or bottom of a reservoir, and when pushing out the legs the possibility of bending parts of the blades one way.

Known gill flippers (RU 2260464 C2, class A63B 31/08, 2005.09.20) made in the form of domes attached to the swimmer's legs with a permanently preserved shape and rigid lattice walls, which inside have valves in the form of narrow flexible strips overlapping each other (gill) or scales.

In water, when the swimmer pulls the legs under him, the valves open under the pressure of water, thereby reducing the resistance of the aquatic environment, and when pushing the legs, the valves close, increasing the supporting resistance of the aquatic environment at the time of repulsion.

The reasons that impede the achievement of the technical result indicated below when using well-known flippers include the complexity of their manufacture, the large dimensions and the inconvenience of moving in them along the shore or bottom of a reservoir.

Known fins for swimming by the breaststroke method (DE 2322276, АВВ 31/08, 1974.05.30) made of elastic material, containing galoshes, to the neck of each of which there is attached a skirt adjacent to its surface with corrugations and four stiffeners.

When a swimmer performs jogging with his feet, the lower edges of the skirts diverge and increase the supporting resistance of the aquatic environment at the time of repulsion. When the swimmer pulls the legs under him, the skirts return to their original position, thereby reducing the resistance of the aquatic environment. Flippers also allow the swimmer to be held upright in the water.

The reasons that impede the achievement of the technical result indicated below when using well-known flippers include their structural complexity and a small rowing surface.

The closest in technical essence and the achieved result to the claimed technical solution include well-known flippers (DE 369164, class A63B 31/14, 1923.02.15).

Each flipper contains a sole, a case for the lower leg and two disclosed rowing surfaces in the form of domes of umbrellas with stiffeners. Three cuffs are installed on the shin case: the upper one under the knee, the middle one in the calf muscle and the lower one on the ankle. The stiffeners and the upper edges of the umbrellas are attached respectively to the upper and lower cuffs. When the umbrellas are opened, the movement of their lower edges is limited by rods - at the upper umbrella, attached to the middle cuff, and at the lower umbrella - to the sole.

When a swimmer performs a jogging motion with his feet, the canopy of the umbrellas opens and increases the supporting resistance of the aquatic environment at the time of repulsion. When the swimmer pulls the legs under him, the domes return to their original position, thereby reducing the resistance of the aquatic environment.

The reasons that impede the achievement of the technical result indicated below when using known flippers include their structural complexity and large dimensions.

The task to which the invention is directed, is to simplify the design and manufacturing technology of fins, reduce the size in the transported state, increase ease of use.

The technical result obtained by carrying out the invention consists in the absence of volumetric elements in the design of the flippers, in the possibility of making flippers by stitching their components, as well as the exclusion of contact of the stiffening ribs of the dome with the surface mating with the supporting plane of the swimmer's foot.

The specified technical result during the implementation of the invention is achieved by the fact that in the inventive fins, each flipper has a disclosed rowing surface in the form of a dome with a cuff and stiffeners and fastening elements to the swimmer’s legs, in contrast to the known fins, the fastening elements of each flipper to the swimmer’s foot are made in the form of a cuff fixed on the swimmer’s ankle, adjustable in length of the cuff circumference and attached to it, facing inside the dome of the support loop with rigid side sections and an elastic lower part, mating with the arch of the swimmer’s foot and provided with a mount to the foot in the area of its rise, while the stiffening ribs of the dome are equipped with partitions made of soft material attached to the corresponding ribs of the lateral, rigid sections of the loop.

The specified technical result is also achieved by the fact that the stiffeners of the fins are made not protruding beyond the reference plane of the swimmer's foot.

Figure 1 shows the inventive flipper, side view, figure 2 is the same, front view, figure 3 is a rear view, figure 4 is a top view.

Each flipper contains a cuff 1, adjustable along the circumference, with a latch 2 of adjustable length. The cuff 1 is attached to the upper edge of the dome made of soft material in the form of mating panels - front 3, side 4 and 5 and rear 6. The mating lines of the panels 3, 4, 5 and 6 of the dome have stiffeners 7, 8, 9 and 10. To smear 1, a support loop 11, also turned inside the dome 3-6, is attached, in which the side sections 12 and 13 are rigid and the lower part 14 is elastic. To the interface between the lateral, hard sections 12 and 13 of the loop 11 with its elastic lower part 14, an element for attaching the loop 11 to the swimmer’s foot is attached — a length-adjustable strap 15 with a latch 16 of adjustable length. All stiffeners 7, 8, 9 and 10 are connected by soft material partitions 17, 18, 19 and 20 with the corresponding front or rear side ribs of the hard side sections 12 and 13 of the hinge 11. The front section 3 of the dome has a cut associated with the connector in the cuff 1. A sectional zipper 21 is installed.

The inventive flippers work as follows.

On the front panel 3, open the zipper 21 and through the resulting opening put on a fins on the foot. The lower, elastic part 14 of the support loop 11 is installed under the arch of the foot, with the help of the belt 15 they cover the rise of the foot, adjust the necessary length of its working section and fix it with the latch 16. Then with the closed zipper 21 using the latch 2 with the required set circumference of the cuff 1 fix it on the ankle.

If the stiffeners 7, 8, 9 and 10 do not protrude beyond the support plane of the foot, then they and the corresponding partitions 17, 18, 19 and 20 do not interfere with walking on the hard surface of the shore or bottom of the reservoir.

In wearing flippers approach the pond and plunge into it. Having taken a horizontal position, they bend the legs at the knees and hips, and then the legs straighten sharply, making a jerk movement. The domes of 3-6 flippers under the influence of water resistance open and form a rowing surface experiencing the supporting resistance of the aquatic environment at the time of repulsion. The stiffeners 7, 8, 9 and 10 and the partitions 17, 18, 19 and 20 connected to them retain the unchanged shape of the open rowing surface of the flipper, preventing it from turning out.

In water, when the swimmer pulls the legs under him, domes 3-6 under the pressure of water return to their original position, thereby reducing the resistance of the aquatic environment.

Since the ankle in the cuff 1 is fixed in a cylindrical shape, the fixed fixing on the ankle of the cuff 1 due to its strong constriction can interfere with the blood supply to the foot or injure the ankle itself.

The cuff 1 from sliding down while pulling the swimmer’s legs underneath is held by the hard side sections 12 and 13 of the support loop 11, the lower part of which 14 is fixed to the swimmer’s foot with a strap 15 and a latch 16.

The reference resistance of the aqueous medium at the moment of repulsion is perceived by the open dome 3-6 and through the cuff 1, the side sections 12 and 13 of the support loop 11 and its lower part 14 are transmitted to the swimmer's foot.

A swimmer can jerk his legs alternately with each leg individually, both in horizontal and vertical positions.

Since the fins in their design do not have volume elements, their manufacture can be carried out by stitching the components. The number of canvases of the dome may differ from the declared four.

Folded fins due to the lack of volumetric elements have small dimensions and weight, which will not cause difficulties when they are placed in the baggage of a tourist.

Thus, it is seen that the above information confirms the possibility of implementing the claimed invention, achieving the specified technical result and solving the problem.

Claims (2)

1. Fins, including the rowing surface in the form of an open dome with a cuff and stiffeners, and fastening elements of the flipper to the swimmer’s foot, characterized in that the fastening elements of each flipper to the swimmer’s foot are made in the form of a cuff that is adjustable along the circumference for placement on the swimmer’s ankle and the support loop attached to it, facing the dome, with rigid lateral sections and an elastic lower part for interfacing with the arch of the swimmer's foot and provided with fastening to the foot in the area of its rise, while the stiffening ribs of the cupo and provided with partitions of a soft material attached to the corresponding edges of the side portions of rigid loops. 2. Fins according to claim 1, characterized in that the stiffeners are made not protruding beyond the support plane of the swimmer's foot.

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