JPH0443035B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used for running or floating on coastal water for leisure or sports while riding on the rear deck and holding the handle. The present invention relates to a small personal watercraft, and particularly relates to the structure of a tank for storing liquids such as fuel and water in the personal watercraft.

[Conventional technology]

This type of small personal watercraft generally has an engine mounted in an engine room formed at the front of the hull, and a propulsion unit attached to the rear of the bottom of the hull.The person rides on the rear deck behind the engine room and holds a handle attached to the hull. They are now able to maneuver while supporting their bodies. A propeller or a jet pump is used as the propulsion device, and in the case of a jet pump, it can be steered by changing the jet direction.

[Technical problem to be solved by the invention]

In such a small personal watercraft, in order to exhibit sharp movements, it is desirable to make the hull more compact by making effective use of space without impairing the weight balance in the front, rear, left, and right directions.

By the way, in conventional small personal watercraft of this type, liquid storage tanks such as fuel tanks, oil tanks, and water tanks installed as needed are mounted in the engine room at the front of the hull along with the engine and various auxiliary equipment. Therefore, the engine room had to be enlarged accordingly, making it difficult to downsize the hull.

Furthermore, liquid storage tanks such as fuel tanks are relatively heavy, so with the conventional structure of mounting them at the front of the hull, it is difficult to eliminate the tendency of the bow to submerge underwater at low speeds. A certain amount of time is required.

Furthermore, since there is a lot of up and down at the bow,
The liquid level shakes significantly during navigation, which may be undesirable for liquid storage tanks.

[Purpose of the invention]

The purpose of the present invention is to provide a small glider that can solve the disadvantages of the prior art, makes it possible to effectively utilize internal space, improve tank capacity, and is advantageous in moving the center of gravity to the rear and further improving exercise performance. It is to provide the structure of the boat.

[Means for solving problems]

In the present invention, an engine is mounted in an engine room formed at the front of the hull, a propulsion unit is attached to the rear of the hull, and a person rides on the rear deck behind the engine room and grasps the handle attached to the front of the hull. In a type of small personal watercraft that is steered by hand, fins are formed on both sides of the rear deck that protrude upward and extend in the longitudinal direction, and a liquid storage tank is provided in the internal space formed by the fins and the rear part of the hull. The above object is achieved by having a configuration that forms the following.

〔Example〕

The present invention will be specifically described below with reference to the drawings.

FIG. 1 shows a plan view of a small personal watercraft according to an embodiment of the present invention, FIG. 2 shows the left side of FIG. 1, and FIG. 3 shows the rear side as seen from the line - in FIG. 2.

1 to 3, an engine room 1 is formed at the front of the hull, and an engine 2 installed in the engine room 1 drives a propulsion machine 4 provided at the rear of the bottom of the ship via a drive shaft 3. Ru.

The hull is formed of a hollow structure in which a deck 20 constituting the upper half and a hull 30 constituting the lower half are each made of molded plastic (fiber-reinforced plastic or the like) and joined together. A line S indicates a joint surface between the deck 20 and the hull 30.

The part 5 of the deck 20 behind the engine room 1 (referred to as the rear deck) is the part where the operator rides, and the operator is seated at the handle 6 attached to the front of the hull.
(More specifically, the grip part) to support your body while maneuvering.

Fin portions 7, 7 are formed on both sides of the rear deck 5 and project upward and extend in the front-rear direction, and a riding floor 8 is formed between these fin portions 7, 7.
is formed. In addition, the dashed-dotted line W in FIG. 2 and FIG. 3 illustrates the water surface.

The riding floor 8 is a step section on which a passenger rides (normally in a standing position), and the fin sections 7 have a wave-shielding function and the like.

4 shows the inside of the fin portion 7 taken along the line - in FIG. 1, and FIG. 5 shows a cross section taken along the line - in FIG. 4.

In FIGS. 4 and 5, each fin portion 7,
Liquid storage tanks 10, 10 are formed in internal spaces 9, 9 formed by 7 and the rear part of the hull.

The tank 10,
Inlet 11, 11 with a cap leading into 10
is provided.

In the illustrated example, the liquid storage tanks 10, 1
0 is formed of a separate container having a cross-sectional shape along the inner surface of each fin portion 7, 7 and the respective internal spaces 9, 9 on both sides of the rear part of the hull. In some cases, the tanks 10, 10 can also be partially formed by the fins 7, 7 and the rear shell of the hull itself.

The liquid storage tanks 10, 10 are typically fuel (gasoline, etc.) tanks, but they can also be partially or fully used as storage tanks for other liquids, such as oil, engine cooling water, drinking water, or fire extinguishing fluid. It can be used as In this case, 1
A structure can be adopted in which one tank 10 is divided into a plurality of chambers and each chamber is provided with a capped inlet 11, 11.

According to the embodiment described above, the fin portions 7, 7
Since the tanks 10, 10 are formed using the internal spaces 9, 9 on both sides of the rear of the hull, it is possible to effectively utilize the space of the hull and increase the tank capacity easily. At the same time, engine room 1
It is possible to reduce the size of the ship by reducing the size of the ship.

Additionally, since the center of gravity can be moved to the rear, maneuverability can be improved, such as being able to quickly enter a sliding position. At the same time, the tendency of the bow to dive into the water at low speeds can be reduced or eliminated.

Furthermore, since the vertical movement during pitching is smaller in the rear part of the hull than in the bow part, the fluctuation of the liquid level in the tanks 10, 10 is correspondingly reduced, and the generation of bubbles can be reduced.

In addition, in the illustrated embodiment, the fin portions 7, 7 on both sides
Tanks 10, 10 are installed on both sides of the rear of the hull using
However, it is also possible to form a tank on only one side of the rear hull by using the fins on either side.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the engine is mounted in the engine room formed at the front of the hull, the propulsion unit is installed at the rear of the bottom of the ship, and the vehicle is mounted on the rear deck behind the engine room. In a small personal watercraft of the type that is operated by grasping a handle attached to the front of the hull, fins are formed on both sides of the rear deck that project upward and extend in the longitudinal direction, and the fins and the rear of the hull form a Since the liquid storage tank is formed in the formed internal space, it is possible to effectively utilize the internal space and improve the tank capacity, and it is also advantageous in moving the center of gravity to the rear and further improving maneuverability. A small planing boat is obtained.

[Brief explanation of drawings]

FIG. 1 is a plan view of a small personal watercraft according to an embodiment of the present invention, FIG. 2 is a left side view of FIG. 1, FIG. 3 is a rear view taken from the line - in FIG. 2, and FIG. The figure is the first
FIG. 5 is a partially sectional side view taken along line - in the figure, and FIG. 5 is a cross-sectional view taken along line - in FIG. 1...Engine room, 2...Engine, 4...
...Propulsion device, 5... Rear deck, 6... Handle,
7...fin section, 8...riding floor,
9... Internal space, 10... Liquid storage tank, 2
0...Detsuki, 30...Haru.

Claims (1)

[Claims] 1 The engine is installed in the engine room formed at the front of the hull, and the propulsion unit is attached to the bottom mouth of the hull.The boat is operated by riding on the rear deck behind the engine room and grasping the handle attached to the front of the hull. In this type of small personal watercraft, fins are formed on both sides of the rear deck that protrude upward and extend in the longitudinal direction, and a liquid storage tank is formed in the internal space formed by the fins and the rear part of the hull. A small planing boat that is characterized by: