JPH02225193A - Hydrofoil - Google Patents

Abstract

PURPOSE:To heighten a turning responsiveness at a hydrofoil vessel arranged respectively with a propulsion propeller at the rear portion of a hull and with hydrofoils on both right and left sides of the front portion of the hull, by arranging so that the shaft of a hydrofoil on a steering direction side may be pushed into the inside of the hull and the other may be pushed out of the hull, in engagement with a steering wheel. CONSTITUTION:A hydrofoil vessel is made up of the respective arrangements of a propulsion drive portion 3 which is at the rear portion of a hull 1 and generates propulsion by rotating a propulsion propeller 5, and a pair of right and left hydrofoils 13, 15 which are at the front portion of the hull 1. Also, the advance direction of the hull is being made to change by turning around a shaft center the propulsion drive portion 3 or the propulsion propeller 5 through the rotation of a steering wheel 9 provided within a steering chamber 7 within the hull 1. In this instance, a hydrofoil drive portion 17 is provided at the front portion of the hull 1. This hydrofoil drive portion 17 is constituted so as to rotate right and left pinions 25, 27 by means of the rotation of the wheel 9 through a worm gear 19, a worm wheel 21, and advance/retreat hydrofoils 13, 15 in a reverse direction mutually through racks 29, 30.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a hydrofoil boat equipped with a hydrofoil in the hull.
In particular, it relates to one with improved steering characteristics when turning.

(Conventional Technique #i) A conventional example will be described with reference to FIGS. 7 to 11. FIG. 7 is a perspective view showing the overall configuration of the hydrofoil, and the hull 1
A propulsion drive section 103 is provided at the rear of the vehicle. This propulsion drive unit 103 includes, for example, an outboard motor, an inboard motor, and the like.

The propulsion drive unit 103 is provided with a propulsion propeller 105, and by rotating the propulsion propeller 105, a thrust force for the ship is generated.

A wheelhouse 107 is provided within the hull 101, and a steering handle 109 is provided within the wheelhouse 107. By rotating the steering handle 109 in an appropriate direction, the axis of the propulsion drive unit 103 or the propulsion propeller 105 is rotated to control the direction of movement of the ship.

A pair of hydrofoils Ill are provided at the front of the hull 101. These hydrofoils III are fixed to the hull 101 via rods 113.

When the hull 101 moves straight, the axis of the propulsion propeller 105 is aligned with the axis of the hull, as shown in FIG. 8(a). Go straight without leaning.

On the other hand, if the steering handle is turned, if the steering direction is to the right, the propulsion propeller 10 will move as shown in FIG. 9(a).
5 is tilted to the right, and when the steering direction is to the left, the propulsion propeller 105 is tilted to the left as shown in FIG.

When the propulsion propeller 105 tilts to the right as described above, a clockwise moment acts on the hull 101 as shown in FIG. 9(b), causing the hull to turn to the right. Furthermore, when the propulsion propeller 105 tilts to the left, a counterclockwise moment acts on the hull 101 as shown in FIG. 10(b).
The ship turns to the left.

Incidentally, the operation during the left and right turning described above is shown in a flowchart as shown in FIG. 11. In other words, the steering handle 1
When the 09 is steered, a lateral force is first generated at the rear of the hull. Thereafter, a lateral force is also generated at the front of the hull, and at this point a rolling moment is generated, and the acting force of this moment causes the hull to turn in a desired direction.

(Problems to be Solved by the Present Invention) According to the conventional hydrofoil boat as described above, the propulsion propeller tilts when the handle is operated, but the lateral force from the propulsion propeller is applied from the rear of the hull to the front. This occurs sequentially, so it takes some time for the ship to turn. As a result, there was a problem in that the steering lacked instantaneousness.

An object of the present invention is to provide a hydrofoil boat with excellent responsiveness when turning.

(Means for Solving the Problems) The present invention includes a hull having a steering handle, a propulsion drive section attached to the rear of the hull and equipped with a propeller for propulsion, and a front part of the hull for propelling the vehicle. The present invention is based on a hydrofoil boat, which is equipped with hydrofoils provided on both sides in a direction, and turns the propulsion propeller by turning the rudder handle, thereby steering the hull in a desired direction.

Based on the premise of the above-mentioned hydrofoil boat, this invention
It is characterized by the provision of a hydrofoil drive unit that is connected to the steering handle and pushes the shaft of the hydrofoil on the side in the steering direction into the hull, and pushes the shaft of the hydrofoil on the opposite side from the steering direction out of the hull. be.

(Operation of the present invention) Since the present invention is configured as described above, for example, when the steering handle is turned to the right, the shaft of the hydrofoil on the right side, which is the steering direction, contracts, and the shaft of the hydrofoil on the right side, which is the steering direction, contracts, and The shaft of the hydrofoil elongates. Therefore, the front part of the hull actively rolls to the right due to the action of these hydrofoils, and sea level pressure acts uniformly on both hydrofoils.

In this way, the front part of the hull rolls directly and sea surface pressure acts on both hydrofoils, resulting in very good responsiveness to steering wheel operations.

(Effects of the Invention) According to the hydrofoil of the present invention, lateral forces act on both the front and rear parts of the hull almost simultaneously with the steering wheel operation, so the response to the steering wheel operation is very improved.

(Embodiment of the present invention) In the embodiment shown in FIGS. 1 to 6, a propulsion drive unit 3 similar to the conventional one is provided at the rear of the hull 1, and a propulsion propeller 5 is provided in this propulsion drive unit 3. ing.

The hull 1 is provided with a wheelhouse 7, and a steering handle 9 is provided within the wheelhouse 7. This steering handle 9 has a transmission mechanism 11 provided on its shaft.
When the handle 9 is turned, the propulsion propeller 5 is tilted to either the left or right.

Further, a hydrofoil drive unit 17 is provided at the front of the hull 1. This hydrofoil drive unit 17 includes a worm gear 19 provided on the handle shaft, a worm wheel 21 that meshes with the worm gear I9, and a worm wheel 21 that meshes with the worm gear I9. 21 axis 2
The main elements are pinions 25, 27 fixed to both ends of the pinion 3, and racks 29, 31 that mesh with both pinions 25, 27.

The rack 29.31 has a shaft 33.35.
The rack 29.31 is connected to the hydrofoil 13.15 via a bearing 37.39, and the rack 29.31 is slidably supported by a bearing 37.39. Moreover, these racks 29.
31 are 180 degrees each other, as is clear from Figure 3.
They are arranged with a degree phase shift.

Therefore, when the handle 9 is turned to rotate the worm gear 19 in a predetermined direction, both pinions 25.27 rotate in the same direction, but the directions of movement of both racks 29.30 are completely opposite.

This will be explained in relation to the hull 1 as follows. When the steering handle 9 is in the neutral position, both hydrofoils 1
3.15 is kept at the same level as shown in FIG.

However, if the handlebar 9 is turned to the right, the worm wheel 21 rotates in the direction of the arrow, so the shaft 33 of the right hydrofoil 13, which is the steering direction, is pushed into the hull, and the shaft 33 of the right hydrofoil 13, which is the steering direction, is pushed into the hull, and the worm wheel 21 is rotated in the direction of the arrow. The shaft 35 of the hydrofoil 15 is pushed out from the hull.

If the handle 9 is turned to the left, which is the opposite of the above, the shaft 35 of the left hydrofoil will be pushed into the hull, and the shaft 33 of the right hydrofoil will be pushed out from the hull.

The operation based on the above configuration will be explained below.

However, if you turn the handle 9 to the right, the propulsion propeller 5
tilts to the right, and as described above, the shaft 33 of the right hydrofoil 13, which is in the steering direction, is pushed into the hull 1, and the shaft 35 of the left hydrofoil 15, which is on the opposite side to the steering direction, is pushed out from the hull. It is extruded and the overall shape is as shown in FIG.

When the propulsion propeller 5 tilts to the right as described above, a lateral force due to the propulsive force acts on the rear of the hull. Moreover, if both hydrofoils 13, 15 become left-right unbalanced as shown in FIG. 5, a lateral force will also act on the front part of the hull 1 accordingly. Therefore, in this case, when the handle 9 is turned, lateral forces are generated almost simultaneously in the front and rear portions of the hull (see FIG. 4).

In this way, a lateral force is generated almost simultaneously at the front and rear of the hull, and a rolling moment is immediately generated at the front and rear of the hull 1, which improves responsiveness to steering wheel operations.

Moreover, as mentioned above, since the hydrofoils are unbalanced left and right, even during cornering, these hydrofoils are uniformly subjected to sea surface pressure, which improves responsiveness to the -layer steering wheel operation.

Incidentally, FIG. 6 is a flowchart showing the operation of the hull when turning. As is clear from FIG. 6, lateral forces are generated at the front and rear of the hull almost simultaneously, and a rolling moment is generated after the lateral forces are generated.

[Brief explanation of the drawing]

Drawings 1 to 6 show an embodiment of the present invention, in which Fig. 1 is a front view of a hydrofoil, Fig. 2 is a side view of the hydrofoil, and Fig. 3 is a configuration of an underwater drive unit. Figure 4 is an explanatory diagram showing the situation in which lateral force is generated on the hull, Figure 5 is a front view with the left and right hydrofoils unbalanced,
Fig. 6 is a flowchart showing the turning operation, Figs. 7 to 11 show a conventional hydrofoil boat, Fig. 7 is a perspective view of the hydrofoil boat, and Figs. 8 to 1O show the hull. FIG. 11 is a flowchart showing the turning operation. DESCRIPTION OF SYMBOLS 1... Hull, 3... Propulsion drive unit, 5- Propulsion propeller, 9... Steering handle, 13.15 Hydrofoil, 17
...Underwater drive unit, 33.35-...shaft.

Claims (1)

[Claims] a hull equipped with a steering handle; a propulsion drive section attached to the rear of the hull and equipped with a propeller for propulsion;
In a hydrofoil boat, which is equipped with hydrofoils provided on both sides in the forward direction of the hull, and turns the propulsion propeller by turning the steering handle to steer the hull in a desired direction. , a hydrofoil drive unit that is linked to a steering handle and pushes the shaft of the hydrofoil on the side in the steering direction into the hull, and pushes the shaft of the hydrofoil on the side opposite to the steering direction out of the hull. Winged ship.