JPS6114956Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is based on a special human power system that uses horizontal blades to hydrodynamically generate energy by swinging left and right by a person on the ship, and uses that force to propel the ship. Concerning propulsion boats.

Conventionally, there is a type of human-powered boat that uses a simple mechanism to convert human power into rotational force, etc., and drives a propeller to move the boat.
These vehicles have simple human-powered operations, and they lack interest in test-driving them, and they lack training in human kinesthetic sense and sportiness. A floating body described in Japanese Patent Application Laid-open No. 47-25895 is known as this type of board. In this conventional floating body, a person sits on a floating body that is semi-submerged in the sea with his or her feet stuck into the sea, and by moving the center of gravity of the body back and forth, a pitching motion is applied to the floating body. It is something that arises and gains propulsion. However, this floating object had the disadvantage that people could not play with their clothes on because their legs and waist would get wet with seawater. In addition, floating bodies are large and located below the sea surface, so there is great water resistance, and the propulsive force from the membranous fins makes the propulsion inefficient, and unless the body swings back and forth, sufficient propulsive force cannot be generated and the floating body becomes fatigued. It had the disadvantage of being easy.

The present invention aims to eliminate such drawbacks and provide an excellent swing board that can be used even with clothes on and that can be propelled efficiently without feeling fatigued.

Also known as this type of board are those described in Utility Model Application No. 50-140197 and Utility Model Application No. 48-35098, but in the former, the boarding area is located in the center of the floating section, and the movable wings are Because they are installed on the left and right sides of the boarding area, and are shaped like a figure eight, they have the disadvantage that the water resistance is large and the propulsion force is uneven, causing the bow to sway from side to side as the ship moves forward. In addition, the latter has a large floating body that swings the floating body back and forth to obtain propulsive force, so the water resistance is large, and the elastic plate is attached inside the outer periphery of the floating body, so the propulsion efficiency is poor. There are some drawbacks. The present invention is an excellent swing board that further eliminates these drawbacks, and its main points are 1) A boarding place is formed behind the floating part of the small hull, and a grip part is provided, and the rear part of the hull is equipped with a A horizontal leading edge frame extending outward is installed, and an elastic horizontal blade is fixed or semi-fixed to the rear of the leading edge frame, so that the horizontal blade moves up and down around the leading edge frame. This swing board is characterized by being able to swing widely.

Hereinafter, embodiments of this invention will be described based on the drawings. In the embodiment shown in Figs. 1 to 3, a boarding area 2 is provided at the rear of the upper part of a small hull 1 that has enough buoyancy to lift the weight of about one person, and horizontal wings 3, 3' are installed at the stern of the boarding area 2. Handle mounting arms 4 installed on the left and right sides and extending from the bow toward the boarding area 2
This is an example in which left and right grip bars 5 are protruded from the tips of the boat, a grip portion 6 is formed on the grip bars, and a rudder 7 is provided at the stern.
In addition, 8 in the figure is the mounting frame for the horizontal blades 3 and 3', and 9
10 is a fixing screw, and 10 is a mounting nut.

Here, it is desirable that the handle attachment arm 4 and the rudder 7 be interlocked so that steering can be performed using the handle attachment arm 4. Also, Fig. 4 shows the horizontal blades 3, 3'
FIG. 5 shows an example in which the mounting frame 8 is fixed to the mounting frame 8, and FIG. 5 shows a semi-fixed state with some play provided in consideration of hydrodynamic efficiency.

It is desirable that the horizontal blades 3, 3' be made of a material and have a structure that has a suitable elasticity.

In this embodiment, a person gets on board at the boarding area 2, grips the grip 6 to move the center of gravity, and repeatedly rocks the small boat 1 from side to side in a well-balanced manner. When the small hull 1 swings from side to side, if the horizontal blades have elasticity, the horizontal blades 3 and 3' attached to the left and right rotate around the center of the ship, and the rear of the horizontal blades will move as shown in Figure 6. It bends up and down and kicks water to generate propulsion, and if the horizontal blades are semi-fixed, it kicks as shown in Figure 5.

As mentioned above, the present invention is based on a small boat with people on board.
By simply swinging the board from side to side, the board can be propelled by the kicking action of the horizontal blades 3, 3' attached to the left and right, and is also useful for training human balance and for sports.

Furthermore, according to the present invention, it is possible to board the vehicle without getting wet in seawater, so it can be used with clothes and shoes on, and it is also possible to efficiently obtain high propulsive force by rocking the body from side to side, which is relatively easy and not tiring. There is an effect that it can be done.

[Brief explanation of the drawing]

Figure 1 is a front view showing the swing board of the present invention;
Figure 2 is the same plan view, Figure 3 is the same side view, and Figures 4 and 5.
The figure is an explanatory view showing an example of how the horizontal blade is attached, and FIG. 6 is an explanatory view showing the water kicking state of the horizontal blade. 1: Small hull, 2: Boarding area, 3, 3': Horizontal blades, 4: Handle mounting arm, 5: Grip bar, 6: Grip, 7: Rudder.

Claims (1)

[Scope of utility model registration request] A boarding place is formed behind the floating part of the small hull, and a grip part is provided, and a horizontal leading edge frame extending in the left and right direction is provided at the rear of the hull, protruding greatly outward, and behind the leading edge frame. A swing board characterized in that elastic horizontal blades are attached in a fixed or semi-fixed state so that the horizontal blades can largely swing up and down around a leading edge frame portion.