JPH0523439Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a passage structure for ventilation in the engine room of a small personal watercraft.

(Prior art) The hull is shorter and wider than that of conventional small personal watercraft, and the overall shape is box-shaped. In addition to improving the rigidity of the hull,
An engine room is provided inside the cabin, which is filled with a filler made of synthetic resin foam material etc. to provide buoyancy, and is located approximately in the center of the hull.A driver's seat is provided above the engine room, and the driver's seat is A small personal watercraft has been proposed in which the boat is maneuvered by tilting a control stick provided in front of the seat to the left and right to change the angle of the jet propulsion nozzle around the vertical axis.

In this type of small personal watercraft, it is extremely important to make effective use of the space inside the hull to install various equipment such as the engine, and ventilation in the engine room covered by a cover is extremely important. In general, the ventilation passage structure for this purpose is to have an intake port at the top of one side, an exhaust port at the top of the other side, and a ventilation passage from the intake port through the engine room to the exhaust port. A widely used configuration is to provide a filling material between the decks on both sides and the hull so as to cross the cabin. As prior art, the present applicant's Utility Application No. 152321 (1983)
56396) was devised.

(Problem to be solved by the invention) As mentioned above, with the ventilation passage configuration in which the intake and exhaust ports are opened on both sides of the hull, the length of the ventilation passage can be shortened, making it difficult to use the space inside the hull effectively. Although it is said to be effective, when performing forced ventilation,
If necessary, install ventilation fans, etc.
There is a difficulty in securing space for installing ventilation fans in the engine room and in the middle of ventilation passages.

This idea was developed in view of the above points, and provides a passageway structure for ventilation in the engine room of a small personal watercraft that allows for the installation of a ventilation fan for forced ventilation while also making effective use of space within the hull. The purpose is to

(Means for Solving the Problem) The gist of this invention to achieve the above object is that the hull has a wide and shallow box shape, and the engine room is located approximately in the center of the hull, with an engine room inside the cabin. In a small personal watercraft in which the space formed between the deck and the hull that constitutes the hull is filled with filler, an intake port is opened in the upper part of one side, and an intake port is provided in the upper part of the stern part. A passageway structure for ventilation in the engine room of a small personal watercraft, characterized by an exhaust port opened toward be.

(Function) According to this invention configured as described above, the main part of the ventilation passage is provided inside the filling material filled in the space surrounded by the deck and hull of the hull, which makes effective use of the space inside the hull. It will be done.

By relaying the ventilation passage in the stern of the ship to the interior of the electrical equipment room equipped with batteries, etc. in the cabin, ventilation fans can be installed in the room as necessary to provide both natural and forced ventilation. This can be done selectively.

In addition, the exhaust port for the ventilation passage is installed in the back crest of the ship, which can be attached to and removed from the deck surface at the stern of the ship.The exhaust port is positioned higher than the deck surface, reducing the intrusion of water spray caused by following waves, etc. Furthermore, when the backrest is removed, there are no protrusions on the deck surface, which closes the cabin opening and allows use as a sun deck for swimmers to rest on.

(Example) Hereinafter, an example of this invention will be described based on the drawings.

Figure 1 is an overall perspective view of a small personal watercraft, and Figure 2 is a schematic configuration diagram showing the entire ventilation passage of this invention, with the right half showing a cross section of the hull, and the left half showing a longitudinal section of the hull. .

In the figure, reference numeral 1 indicates the hull of a small personal watercraft, which has a wide and shallow box-like overall shape. This is a well-known structure in which the hull 1 is filled with a filler 5 made of a resin foam material or the like to improve the rigidity of the hull 1 and to exhibit buoyancy.

Reference numeral 6 denotes an engine room located approximately at the center of the hull 1 and provided within the cabin 2. This engine room 6 is covered with a cover 7, and a driver's seat 8 is provided on the upper surface of the engine room 6.

Reference numeral 9 denotes a ventilation passage for ventilating the inside of the engine room 6. This ventilation passage 9 has an intake port 10 at the top of the hull 4 forming one side, which takes in air from outside the ship. A backrest 1 has an exhaust port 11 that is removably provided on a deck surface at the stern of the ship for discharging the exhaust gas into the atmosphere.
2, a ventilation passage 9a between the intake port 10 and the engine room 6 is provided inside the filler 5 between the side deck 3 and the hull 4 so as to cross the cabin 2. The ventilation passage 9b from the engine room 6 to the exhaust port 11 crosses the cabin 2 from the engine room 6 and rises inside the filling material 5 between the deck 3 and the hull 4 on the other side, and from this point toward the stern. Then, in the stern part, an electrical equipment room 13 for installing electrical equipment such as a battery installed under the rear seat in the cabin 2 is relayed, and from this, a rising part 9c is connected between the exhaust ports 11. In order to prevent the backflow of droplets etc. entering from the exhaust port 11, a short mouth tube 14 with both ends opened sideways is provided in the upward opening of the rising portion 9c in a T-shape and can be attached and detached. When the mouth tube 14 is removed, the deck surface is made flat.

15 is a ventilation passage 9 in the electrical equipment room 13
The ventilation fan 15 is arranged in b, and is composed of a Shirotsuko fan or the like, and when the ventilation fan 15 is activated, forced ventilation is performed, and when it is in a rest state, it does not obstruct the flow of ventilation during natural ventilation.

In addition, 16 in the figure is the driver's seat 8 inside the cabin 2.
It is a control stick located at the front.

(Effects) As described above, this invention provides the following effects.

(1) As with conventional systems, the main part of the ventilation passage is provided inside the filling material filled in the space surrounded by the deck and hull of the hull, so the space within the hull can be used effectively.

(2) The exhaust port is located higher than the deck surface, so
There is little influence from following waves.

(3) In the stern section, the ventilation passage was connected to the electrical equipment room, so a ventilation fan could be installed using the space in the electrical equipment room, allowing both forced ventilation and natural ventilation to be performed selectively.

(4) Since the ventilation fan is located very close to the battery installed in the electrical equipment room, the wiring structure can be simplified.

(4) The backrest with the exhaust port and the mouth pipe at the exhaust port are made removable, so when these are removed, the entire deck surface becomes flat.
By closing the cabin opening, it becomes possible to use a sun deck or other means for swimmers to rest.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of a small personal watercraft, and FIG. 2 is a schematic configuration diagram showing the entire ventilation passage of this invention. 1...Hull, 2...Cabin, 3...Deck,
4...Hull, 5...Filling material, 6...Engine room, 7...Cover, 8...Driver's seat, 9...
Ventilation passage, 10...Intake port, 11...Exhaust port, 1
2...Bath crest, 13...Battery room, 14...Mouth pipe, 15...Ventilation fan.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The hull has a wide and shallow box shape, has an engine room in the cabin located approximately in the center of the hull, and is located between the deck and hull that make up the hull. In a small personal watercraft made of a space filled with filler material, an intake port is opened at the upper side of one side, and an exhaust port is opened toward the rear at the upper part of the stern, and the air flows from the intake port through the engine room. A passage structure for ventilation in an engine room of a small personal watercraft, characterized in that a ventilation passage leading to an exhaust port is provided inside a filling material between a deck and a hull. (2) The engine room ventilation passage structure for a small personal watercraft according to claim 1, wherein the ventilation passage is relayed to an electrical equipment room provided in the cabin at the stern. (3) The engine room ventilation passage structure for a small personal watercraft according to claim 1, wherein the exhaust port of the ventilation passage is provided in a backrest removably provided on the stern deck surface.