WO2015181452A1

WO2015181452A1 - Water bike propelled by a water stream

Info

Publication number: WO2015181452A1
Application number: PCT/FR2015/000098
Authority: WO
Inventors: Omar NOUR EL ALAOUI
Original assignee: Nour El Alaoui Omar
Priority date: 2014-05-28
Filing date: 2015-05-13
Publication date: 2015-12-03
Also published as: FR3021623A1; FR3021623B1; MA39513B1

Abstract

The present invention relates to the technical field of non-motor-driven water vehicles for sports and leisure. The invention includes a chassis (5), tank float (6), handlebars (2), and a centrifugal pump (14), the rotor of which is rotated by the force of the user on a pedal assembly (7). The water stream produced by the centrifugal pump (15) is expelled through a water ejection nozzle (20) located at the rear of the craft. By counter-reaction, the water bike is propelled forward. Said invention is mainly intended for water sports and cyclist amateurs who want to practice their activities on watercourses.

Description

NAUTICAL BIKE PROPELLED BY A WATER JET

TECHNICAL FIELD TO WHICH THE INVENTION RELATES The present invention is in the technical sector of non-motorized water sports and leisure equipment. It is a nautical bike powered by a jet of water. This invention is intended primarily for the use of water sports enthusiasts and cyclists who want to practice their activities on lakes, rivers or seaside. It can exist in single-seat or tandem.

2) DESCRIPTION OF THE STATE OF THE PRIOR ART In the field of nautical cycling, non-static, the prior art consists in adapting rigid or inflatable floats to a bicycle to allow its flotation. The bike pedals drive directly or indirectly a propulsion system propeller or impeller. The handlebar allows direct or indirect steering the rudder that directs the boat. The publication FR 2 693 427 is a concrete example of this type of embodiment.

It also adapts a mechanical motorization system, comprising a propeller or turbine which is rotated under the action of the pedals, to floating boats to ensure their propulsion. Publication WO 2005/108201 A1 describes the adaptation of such a mechanism to a canoe.

From FR2 782 694 is known a two-wheel cycle that can travel on different surfaces. This device comprises, in particular, fins that open and close allowing the bike to advance in the water, its flotation being provided by floats attached to the frame of the bike.

These inventions have several disadvantages. They are bulky and difficult to transport even if they are removable. In general, they are not stable because in some cases their center of gravity is above the level of the water surface. These boats move thanks to a propulsion provided by the feet on a pedal and move with the help of a handlebar, but they do not allow the user to move in the water as it does with a bike in the air.

The present invention therefore aims to remedy these drawbacks. It is small in size and can be stored and transported easily. By construction, the density relative to the water of the nautical bicycle propelled by a jet of water is slightly less than 1 which ensures its buoyancy. The center of gravity of the water bike is located below the water surface; which ensures its stability. This bike allows the practice of water sports and cycling in an aquatic environment and which, moreover, is capable of hydro massage. 3) BRIEF DESCRIPTION OF THE INVENTION

The structure of the nautical bike propelled by a jet of water resembles that of a classic bike. It consists of a frame (5), a handlebar (2) of a saddle with its backrest (12) and a pedal (7); instead of the front wheel of a conventional bicycle there is a tank float (6) and the rear wheel is replaced by a centrifugal pump (15). The pedal (7) drives, in its movement, using a toothed belt (9), the rotor (16) of the centrifugal pump (15) which draws water through the water suction holes (19) located on both sides of the bicycle and expels it through the water ejection nozzle (20) located at the rear of the boat. By counter-reaction, the water bike is propelled forward. The handlebar (2) controls the direction of movement of the boat.

By construction, the density relative to the water of the nautical bicycle propelled by a jet of water, when the tank float is empty, is slightly less than 1; which ensures its buoyancy. The center of gravity of the water bike is located below the water surface; which ensures its stability. Thus the nautical bike is partially immersed; which allows the user to ride it and drive it easily. In addition, nautical cycling propelled by a jet of water allows the user to benefit from Γ hydro-massage obtained by the impact of water on his body on the move.

4) BRIEF DESCRIPTION OF THE DRAWINGS

The main features and advantages of the jet powered water jet bicycle according to the present invention will become more apparent from the detailed description below. The particular embodiment taken by way of non-limiting example is illustrated by the following appended drawings:

Figure 1 illustrates nautical cycling propelled by a jet of water.

Figure 2 illustrates the chassis.

Figure 3: illustrates the tank float with the steering shaft and the handlebars.

Figure 4: illustrates the centrifugal pump.

Figure 5: illustrates the stator

Figure 6: illustrates the rotor

5) DETAILED DESCRIPTION OF THE INVENTION

By construction, the density relative to the water of the nautical bicycle propelled by a jet of water, when the tank float is empty, is slightly less than 1; which ensures its buoyancy. When the float tank is filled with water, the density relative to the water of the water bike is equal to 1; which allows to dive with the nautical bike. The center of gravity of the water bike is located below the water surface; which ensures its stability. With reference to the figures, the nautical bicycle propelled by a jet of water according to the present invention comprises: - A frame (5) which allows to assemble the various elements of the boat. It has a shape substantially Y. On the lower part of the frame (5) is installed a keel (10) which allows to have the center of gravity as low as possible with respect to the surface of the water to ensure stability water bike and keep it in a vertical position.

- A handlebar (2) which allows the user to steer the boat by actuating the rotation of the tank float (6) with the hands. The handlebar (2) is separated from the upper front part of the frame (5). It is attached to a steering shaft (3) which passes through the front end of the frame (5) and down through the guide (4) to the tank float (6). The rotation of the handlebar (2) to the left or to the right causes the rotation of the tank float (6) in the same direction; which makes it possible to control the direction of movement of the nautical bicycle propelled by a jet of water.

- A steering shaft (3) which transfers the movement of the handlebar (2) to the tank float (6). The upper end of the shaft is fixed to the handlebar and its lower end is integral with the tank float. The steering shaft (3) passes through the guide (4); which ensures a pivot connection between the frame (5) and the steering shaft (3).

- A float tank (6) which provides the waterline and direction of movement of the water bike. The tank float (6) is separated from the lower front portion of the frame (5). It is attached to the lower end of the steering shaft (3). The rotation of the tank float (5) to the left or to the right causes the bike to move in the same direction as the float. The tank float (6) can be filled with water through the orifice (1) to obtain the desired depth of immersion.

- A saddle (12) with its backrest that serves as a point of support for the user. It is fixed on the upper rear end of the frame (5). The seat (12) with its backrest, allows the user to exert a significant force on the pedal (7). This force opposes the support of the user on the seat back (12). The adjustment of the distance separating the saddle (12) with its backrest of the pedal (7) is achieved by means of the connection slide between the saddle (12) and the frame (5), the guide (14) is pierced in the frame (5) and whose slider (13) is integral with the saddle (12).

- A pedal (7) which allows the user to operate the propulsion of the water bike using the legs. It is fixed on the central point of the frame (5). The crankset (7) is the mechanism that recovers human energy and transmits it through a toothed belt (9) to the rotor (16) of the centrifugal pump (15).

- A toothed belt (9) which transfers the movement of the pedal (7) to the centrifugal pump (15). It is attached at each of its ends by a toothed pulley, the first pulley (8) being fixed to the pedal (7), the second pulley (18) being fixed on the two discs of the rotor (16) of the centrifugal pump (15). ).

- A centrifugal pump (15) that propels the water bike. It is fixed on the lower rear side of the frame (5). The centrifugal pump (15) consists of a rotor (16) and a stator (22). The rotor (16) consists of two discs fixed on the toothed pulley (18), on each disc are fixed a set of vanes (17). The rotor (16) is driven by the toothed belt (10). The stator (22) corresponds to the rotor housing (16). It has water suction ports (19) on both sides of the centrifugal pump (15) and a water ejection nozzle (20) located at the rear of the water bike. The water jet produced by this pump is expelled through the water ejection nozzle (20). By counter-reaction, the water bike is propelled forward.

- The water ejection nozzle (20) is articulated in its support (21). It is provided with a lever (1 1) for controlling its orientation in the vertical plane according to the desired movement. The water jet may be directed downward to reduce the depth of immersion of the boat or upwards to ensure immersion of the boat when the float tank is filled with water. 6) INDUSTRIAL APPLICATION

The present invention is not limited to the embodiments described and shown, but the skilled person will be able to make any variant consistent with his mind. The invention aims to obtain a better possibility of commercial diffusion than traditional hydro cycles because its storage, transport and use are facilitated.

Claims

1) The nautical bicycle propelled by a jet of water according to the present invention is a non-motorized means of transport for navigating and diving in calm water on lakes and rivers and by the sea, its propulsion is provided by the muscular effort provided by a user, he understands; a frame (5) having a Y-shape which makes it possible to assemble the various elements constituting the boat according to an anatomy similar to that of a conventional bicycle; a handlebar (2) for controlling the direction of movement of the boat by actuating the rotation of a tank float (6) with the hands; a steering shaft (3) which transfers the movement between the handlebar (2) and the tank float (6); the float tank (6) ensures the water boating flotation, the float tank (6) can be filled or emptied with water through through a hole (1) to adjust the density relative to the water of the bike nautical, the tank float (6) can control the direction of movement of the water bike; a seat with a backrest (12) which is intended to serve as a fulcrum when a user exerts a force on a pedal (7) immersed in the water; the pedal (7) can actuate the propulsion of the boat with the legs; a toothed belt (9) which transfers the movement of the crankset (7) to a rotor (16); a stator (22) which corresponds to the rotor housing (16); the rotor (16) and the stator (22) form a centrifugal pump (15), the centrifugal pump (15) propels the nautical bicycle; a water ejection nozzle (20) which can be controlled by means of a lever (1 1), the water ejection nozzle (20) orients the water jet at the outlet of the centrifugal pump (15); a keel (10) which makes it possible to have the center of gravity as low as possible relative to the surface of the water to ensure the stability of the water bike and its maintenance in a vertical position.

2) The nautical bicycle propelled by a jet of water according to the preceding claim characterized in that said frame (5) has a substantially Y shape, on the front end of the frame is fixed the steering shaft (6), on the upper end of the steering shaft (3) is fixed the handlebar (2), on the lower end of the steering shaft (3) is fixed the tank float (6), on the upper end rear of the chassis (5) is fixed the saddle (12) with its backrest, on the central point of the frame (5) is fixed the pedal (7), on the lower back side of the frame (5) is fixed the centrifugal pump ( 15), on the lower part of the frame is fixed the keel (10); this arrangement gives the nautical bike an anatomy similar to that of a conventional bike.

3) The nautical bicycle propelled by a jet of water according to one or more of the preceding claims characterized in that its density relative to the water is slightly less than 1 when the tank float (6) is empty, which ensures its buoyancy; when the float tank (6) is filled with water, the density relative to the water of the nautical bicycle is equal to 1, which makes it possible to use it in diving when the water ejection nozzle (18) orients the jet of water up.

4) The nautical bicycle powered by a jet of water according to one or more of the preceding claims characterized in that the handlebar (2) allows the user to control the direction of movement of the water bike powered by a jet of water. water by actuating the rotation of the tank float (6), the rotation of the handlebar (2) with the hands to the left or to the right causes the rotation of the tank float (6) in the same direction, which allows drive the water bike in the water as you drive a classic bike in the air. 5) The nautical bicycle powered by a jet of water according to one or more of the preceding claims characterized in that the steering shaft (3) ensures the transfer of movement between the handlebar (2) and the float tank (6). ). 6) The nautical bicycle powered by a jet of water according to one or more of the preceding claims, characterized in that the float tank (6) ensures the floating of the water bike, the float tank (6) can be filled or emptied with water through the orifice (1) to adjust the density relative to the water of the water bike, which allows to control the immersion depth of the water bike; the float tank (6) also serves as a drift to direct the movement of the water bike.

7) The nautical bicycle propelled by a jet of water according to one or more of the preceding claims, characterized in that the saddle (12) with its backrest serves as a point of support to the user when exerting an effort on the pedal (7); the adjustment of the distance separating the saddle (12) with its backrest of the pedal (7) is achieved by means of the slide connection between the saddle (12) and the frame (5), a guide (14) is pierced in the frame (5) and a slider (13) is secured to the saddle (12) with its backrest.

8) The nautical bicycle propelled by a jet of water according to one or more of the preceding claims, characterized in that said pedal (7) makes it possible to recover the muscular effort provided by a user and transmits it, thanks to the toothed belt (9) at the rotor (16) of the centrifugal pump (15); the pedal is immersed in the water so the user benefits from the hydro-massaging effect of the water during its movement. 9) The nautical bicycle propelled by a jet of water according to one or more of the preceding claims characterized in that the centrifugal pump (15) ensures the propulsion of the water bike; the centrifugal pump consists of the rotor (16) and the stator (22); the rotor (16) consists of two discs fixed on a toothed pulley (18) which is driven by the toothed belt (10), on each disc is fixed a set of vanes (17); the stator (22) corresponds to the rotor housing (16), the water suction ports (19) of the centrifugal pump (15) are drilled on both lateral sides of the stator (22); the water ejection nozzle (20) of the centrifugal pump is placed on the rear part of the housing (22) in a support (28); the jet of water produced by the centrifugal pump (15) is expelled through the water ejection nozzle (20), by feedback the nautical bike is propelled forwards.

10) The nautical bicycle propelled by a jet of water according to one or more of the preceding claims characterized in that the water ejection nozzle (20) is articulated about the axis of its support (28); the water ejection nozzle (20) is provided with the lever (1 1) for controlling its orientation in the vertical plane; the water jet can be angled upward to allow the water bike to dive when the float tank is filled with water or down to reduce the immersion depth of the water bike when the float tank is empty.