JP2676232B2 - Waterplane boat legs - Google Patents

Description

[Detailed Description of the Invention] Recently, by using carbon fiber reinforced plastic (hereinafter referred to as CFRP), it is possible to manufacture a lightweight hull with excellent strength. By utilizing the spring characteristics of CFRP, the hull is supported in the air by a float. Attempts have been made, such as running or gliding on the surface of the water at high speed (hereinafter referred to as jumping).
The present invention relates to a leg structure of a watercraft that slides or jumps.

If the hull is supported by a plurality of floats and springs, the position of the center of gravity of the boat is inevitably increased and the float intervals are widened, making it difficult to construct the springs, shock absorbers, etc. with strength.

The present invention intends to solve these difficulties and obtain an appropriate leg structure with an extremely simple structure, and one embodiment thereof will be described below with reference to the drawings.

As shown in FIG. 1, FIG. 2 and FIG. 3, a wing 2 of appropriate strength is continuously provided on a hull 1, and a shock absorber (hereinafter referred to as an absorber) 3 is shown in FIG. 4 and FIG. In consideration of the movement angle, it hangs down and is freely connected to the float 4, and a leaf spring 5 of CFRP reaching from the float 4 to the vicinity of the continuous portion of the wing 2 and the hull 1 is provided and connected integrally. WL is the water surface, P is the propeller duct for propulsion, R is the rudder, and W is the attitude control rudder during jumping.

The structure of the leg according to the present invention is as described above. The characteristic feature of the leg is that, in sliding or jumping at high speed, the magnitude of the impact force due to the collision with the water surface is the square of the speed. However, according to the present invention, the absorber 3 at the moment of receiving an impact force is fixed for a moment due to its characteristics, so that the blade 2, the absorber 3 and the leaf spring 5 of the CFRP are proportional. Form a fixed triangle and disperse and handle the momentary complex and huge stress that the float 4 receives.

That is, during normal traveling, the absorber 3 and the leaf spring 5 move freely to exert the spring effect.
At the moment of collision with the water surface, the impact force is dispersed to the wing 2, the absorber 3 and the leaf spring 5, and a leg having sufficient proof strength can be constructed with an extremely lightweight construction.

Further, in the event of a loss of function of the absorber 3, the leg structure inevitably becomes a fixed triangle due to the weight of the hull 1, which has the advantage of minimizing the risk.

[Brief description of the drawings]

1, 2 and 3 are drawings for explaining one embodiment of the present invention, wherein FIG. 1 is a side view and FIG. 2 is a plan view.
FIG. 3 is a front view. FIG. 4 and FIG. 5 are motion sketches for explaining an appropriate angle for suspending the shock absorber 3. 1 ... Hull 2 ... Wing 3 ... Shock absorber 4 ... Float 5 ... FCRP leaf spring WL ... Water surface P ... Propulsion propeller duct R ... Rudder rudder W ... Attitude control rudder during jumping

Claims (1)

(57) [Claims] 1. A water-plane planing boat in which each of a plurality of floats is provided with a spring and a shock absorber to support the hull in the air, and the hull is provided with wings having appropriate strength, and the shock absorber is provided with an appropriate angle from the wing tip. It is connected to the float by hanging it to the float, and the float and the hull are provided with a leaf spring that reaches near the hull continuation part of the wing from the float and integrally connect both, and the wing, the shock absorber and the leaf spring form a substantially triangular shape. A gliding leg characterized by forming.