JPH0534199B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is for riding on the rear deck and controlling the boat by grasping a handle attached to the hull while running around on the coastal water for leisure or sports. The present invention relates to a small personal watercraft used for personal use, and particularly 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 has high speed (e.g. 50km/h)
Generally, the engine is installed 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 rear deck is located behind the engine room. People sit on top of the ship and use the handlebars attached to the hull to support themselves while operating the ship.

Further, a propeller, a jet pump, or the like is used as the propulsion device, and in the case of a jet pump, it can be steered by changing the jet direction.

[Problem to be solved by the invention]

In order to exhibit sharp movements in such small personal watercraft, it is desirable to make the hull more compact by effectively utilizing the 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, because liquid storage tanks such as fuel tanks are relatively heavy, traditional structures in which they are mounted at the front of the hull make it difficult to eliminate the tendency of the bow to submerge underwater at low speeds, and also make it difficult to prevent the bow from going into the water at low speeds. It takes a certain amount of time.

Furthermore, since the bow part moves violently up and down, the liquid level shakes greatly during navigation, which may be undesirable for liquid storage tanks.

[Purpose of the invention]

An object of the present invention is to provide a small personal watercraft that can solve the problems of the prior art, make effective use of space and improve tank capacity, and is effective in moving the center of gravity to the rear and further improving maneuverability. The purpose is to provide a structure for

[Means to solve the problem]

The present invention has an engine mounted in an engine room formed in the front part of a hollow hull, a propulsion unit attached to the rear of the bottom of the ship, and a vehicle mounted on a rear deck forming a rear part of the engine room in the upper half of the hull. In a small personal watercraft of the type that is operated by grasping a handle attached to the front of the hull, on both sides of the rear deck, the rear deck protrudes upward over substantially the entire length of the rear deck in the longitudinal direction and forms a part of the interior space of the hull. By integrally providing a hollow fin portion and installing a cassette-type liquid storage tank that can be taken out from the top surface of the fin portion into the interior space of the hull including the inside of at least one side of the fin portion,
This aims to achieve the above objectives.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

1 is a plan view of a small watercraft according to an embodiment of the present invention, FIG. 2 is a schematic view of the left side of FIG. 1, and FIG. Shown below.

In FIGS. 1 to 3, an engine room 1 is formed in the front part of a hollow hull, and an engine 2 mounted in the engine room 1 is connected to a propulsion device 4 provided at the rear of the bottom of the ship via a drive shaft 3. is driven.

The deck that forms the upper half of the hollow hull (the part above the water surface W) and the hull that forms the lower half of the hull (the part below the water surface W) are made of, for example, plastic (fiber). A hollow hull is constructed by joining and integrating the entire periphery of the deck and the hull.

The upper surface of the rear deck 5, which is the rear part of the deck from the engine room 1, is the part where the operator rides, and the operator uses the handle 6 attached to the front of the hull.
(Grip part) to support your body while operating.

Fin parts 7, 7 are formed on both sides of the rear deck 5, extending over the entire length of the rear deck 5 in the longitudinal direction, and projecting upward and forming a part of the interior space of the hull. A riding floor 8 is formed between them. In addition, the dashed-dotted line W in FIG. 2 and FIG. 3 illustrates the water surface (draft surface) when the hull is floating.

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.

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

As shown in FIGS. 4 and 5, in the internal spaces 9, 9 on both sides of the hull in each fin section 7, 7,
Cassette type liquid storage tanks 10, 10 are removably mounted.

The tank 10,
Openings are formed that are wide enough to take in and take out 10, and these openings are closed by cover plates 12, 12 that are rotatably attached to hinges 11, 11 (openable and closable).

The liquid storage tanks 10, 10 are typically fuel (gasoline, etc.) tanks;
It can be used as a storage tank for other liquids such as engine cooling water, drinking water or digestive fluids.

These tanks 10, 10 are provided with a capped inlet 13 (when storing a plurality of liquids in one tank 10, one capped inlet is provided in each chamber); A grip portion (not shown) for putting in and taking out is formed.

The mounting of each tank 10, 10 should be carried out using a removable holding means, such as a method of elastically supporting the tanks 10, 10 through pads using elastic presser plates 14, 14 fixed inside the hull, as illustrated in FIG. I can do it.

According to the embodiment described above, the following effects can be obtained.

(i) Since the tanks 10 and 10 are made into cassette type,
When used as a fuel tank or an oil tank, the tanks 10 and 10 can be removed and transported to a refueling station for refueling, eliminating the need to transport the hull or preparing another tank for refueling. Work becomes easier.

(ii) Since the tanks 10, 10 are installed in the internal space of the hull at the fins 7, 7 on both sides of the rear deck 5, it is possible to effectively utilize the space in the rear half of the internal space of the hull and easily increase the tank capacity. be able to. At the same time, the hull can be made smaller.

(iii) Since the position of the center of gravity can be moved to the rear, it is possible to enter a gliding position earlier, and the exercise performance can be improved. At the same time, the tendency of the bow to dive into the water at low speeds can be reduced or eliminated.

(iv) Compared to the bow, the rear part of the hull has less vertical movement during pitching, so the tank 1
Fluctuations in the liquid level between 0 and 10 can be reduced.

In the illustrated example, the tanks 10, 10 are mounted inside the hull at the fin sections 7, 7 on both sides, but the tanks may also be mounted only inside the hull at one fin section.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, an engine is mounted in an engine room formed in the front part of a hollow hull, and a propulsion device is attached to the rear part of the hull, and the engine is mounted behind the engine room in the upper half of the hull. In a type of small personal watercraft that is operated by riding on a rear deck that forms part of the boat and grasping a handle attached to the front of the hull, on both sides of the rear deck,
A hollow fin portion that protrudes upward over substantially the entire length in the longitudinal direction of the rear deck and forms a part of the interior space of the hull is integrally provided, and the fin is provided in the interior space of the hull including the inside of at least one fin portion. Since the structure is equipped with a cassette-type liquid storage tank that can be taken out from the top of the hull, it is possible to effectively activate the internal space in the rear half of the hull and increase the tank capacity.Moreover, it is possible to move the center of gravity to the rear, making it easier to move. A small personal watercraft is provided that can further improve performance.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view of an embodiment of a small personal watercraft to which the present invention is applied; FIG. 2 is a left side view of FIG. 1;
Figure 3 is a rear view taken along the line in Figure 2, Figure 4 is a partially cutaway side view taken along the line in Figure 1, and Figure 5 is a side view taken along the line in Figure 4. 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, 12...Lid plate.

Claims (1)

[Claims] 1 The engine is mounted in the engine room formed in the front part of the hollow hull, and the propulsion unit is attached to the rear part of the ship's hull. In a small personal watercraft of the type that is operated by grasping a handle attached to the rear deck, on both sides of the rear deck,
A hollow fin portion that protrudes upward over substantially the entire length in the longitudinal direction of the rear deck and forms a part of the interior space of the hull is integrally provided, and the fin is provided in the interior space of the hull including the inside of at least one fin portion. A small personal watercraft characterized by being equipped with a cassette-type liquid storage tank that can be taken out from the top surface of the watercraft.