JPH0437040Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a hull structure of a small personal watercraft.

(Prior art) Conventionally, in small personal watercraft, the interior space surrounded by the deck and hull (hereinafter simply referred to as interior space) has been used.
is filled with foam, which is made by injecting a foaming agent into the entire interior space of the ship at once.

(Problem that the invention aims to solve) By the way, since the interior space of the ship has a sealed structure extending from the bottom of the hull to the side, and has a complicated shape as a single space, it is necessary to inject a foaming agent into this space at once. If foaming is carried out, it cannot be ignored because it will cause variations in foaming and cause the ship's hull to flex.

In addition, when installing a foaming agent injection hole into the interior of the ship, for example, if it is installed on a deck, it is necessary to perform post-treatment for foam leakage, and there is a risk that foam leakage may remain even after post-treatment. There were often problems with the appearance, such as the presence of a large area, and it was difficult to find an appropriate position.

Therefore, in the present invention, we have developed a small sliding board that can inject a foaming agent into the ship's interior space to create foam, with little variation in foaming, and without the need for special treatment, and which can prevent the appearance problems caused by foam leakage. The purpose is to provide the hull structure of boats.

(Means for solving the problem) For this reason, the hull structure of the small personal watercraft of the present invention is as follows:
In a small personal watercraft having an engine room approximately at the center of the hull and filling the interior space with a foam, the foam may be made of foam in advance and installed in the interior space with a duct for ventilation of the engine room. The duct is characterized by being made of a foamed material that is foamed by injecting a foaming agent into the remaining interior space of the ship through an injection hole provided in the duct.

(Function) The small personal watercraft of the present invention has an engine room ventilation duct made of foam in advance installed in the interior space, which divides the interior space into a front interior space and a rear interior space. This not only divides the volume of the interior space of the hull into two, but also simplifies the form of the space.

In this way, the foaming path is halved in the inboard space and rear inboard space where the foaming agent is injected and foamed, and by simplifying the space form, variations in foaming are reduced and the filling of the foam is uniform in each part. Become something.

In addition, since the front interior space and the rear interior space have approximately the same volume, the foaming rates in both spaces can be made approximately the same.If the foaming rates in both spaces are made approximately the same in this way, both The foaming of the spaces is completed almost simultaneously, which is convenient for the process.

Of course, the foaming rates in both spaces can be set to different desired rates if necessary.

Furthermore, since the injection holes for the foaming agent for the front and rear interior spaces can be provided inside the duct near the duct's intake port, there is no need to consider the appearance, unlike when installing them on the deck in the past. It is possible to omit the post-treatment process to prevent leakage of the foam.

Furthermore, since the duct is made of foam in advance, it functions as a structural reinforcement for the hull by assembling it into the interior space of the ship.

(Example) Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

FIG. 1 is a perspective view showing the overall structure of a small personal watercraft to which the present invention is applied.

The engine room 2 is located approximately in the center of the hull 1,
A duct 5 that takes in air from outside the ship for ventilation in the engine room 2 extends to the port and starboard sides.

This duct 5 is made of foam (in this example,
It is made of polyurethane foam (polyurethane foam), and is assembled into the interior space surrounded by the deck 3 and hull 4, and closely adheres to the deck 3 and hull 4, forming a bulkhead for the interior space, as shown in Figure 2. It is divided into a front interior space 6 where a foaming agent is injected and foamed, and a rear interior space 7.

The duct 5 has the front interior space 6 and the rear interior space 7 inside the duct near the intake port 8.
A blowing agent injection hole 9 is provided through the duct wall so as to communicate with each of the ducts.

Handles 10 are provided at the front and rear of the deck 3,
Corresponding to the lower part of the handle 10, a part of the deck 3 that is not visible from the outside is connected to the front interior space 6 and the rear interior space 7, and has a gas vent hole 1 when the foaming agent is foamed.
1 (Figures 5 and 6).

However, in the hull structure of the present invention, by assembling the engine room ventilation duct 5 made of foam in advance from the engine room 2 to the port and starboard interior spaces, this duct 5 becomes a bulkhead. The interior space is divided into a front interior space 6 and a rear interior space 7.

Therefore, the injection hole 9 (Fig. 2) provided in the duct 5
When a vinyl injection pipe 13 of an appropriate length is inserted into the front interior space 6 and the rear interior space 7, and the foaming agent is injected through these pipes 13, the foaming agent flows in the direction of the arrow 12 in FIGS. 3 and 4. It flows into each space in the direction shown and rapidly foams and expands. This foaming progresses as shown by the arrow 14 in FIGS. 5 and 6, and the gas generated at this time is discharged from the gas vent hole 11 as shown by the arrow 15 in FIGS. The foam expands and fills the entire space, completing the main body of the ship.

At this time, the injection hole 9 is located inside the duct 5 from the intake port 8 of the duct 5 and is not visible from the outside, as shown in FIG. There is no need to carefully remove it.

Also, since the handle 10 will be placed over the gas vent hole 11 later, there is no need to take special measures to prevent foam leakage.

Therefore, according to the hull structure of this embodiment, there is no need for post-treatment when a foaming agent is injected into the interior space surrounded by the deck 3 and the hull 4 and foamed.

Since the duct 5 is made of foam in advance, it not only serves as a reinforcing member, but also serves as a buoyant body, and also has the effect of silencing intake and exhaust noise.

(Effect of the invention) According to the hull structure of the small personal watercraft of the present invention described above, an engine room ventilation duct made of foam in advance is assembled in the interior space as part of the foam filling the interior space. This acts as a partition wall for the interior space and divides the interior space into the front interior space where the foaming agent is injected and foamed, and the rear interior space where the foaming agent is injected and foamed. Since the form is simplified, variations in foaming are reduced and the foam spreads to fill the entire space, resulting in uniform filling of each part.

Furthermore, since both spaces separated by the duct have approximately the same volume, by making the foaming rates of both spaces approximately the same, foaming can be completed almost at the same time, which is convenient from a process standpoint. good. Of course, the foaming ratios of both spaces can be set to different desired ratios as required.

In addition, since the duct is made of foam in advance and assembled into the ship's interior space, it not only functions as a structural reinforcement for the ship's hull, but also serves as a buoyant body, and also has the effect of muffling intake and exhaust noise. It will be done.

That is, from the above points, the structure of the small personal watercraft according to the present invention can provide a more excellent hull.

Furthermore, since the injection hole provided in the duct is located inside the duct near the intake port of the duct, it is possible to eliminate problems in appearance due to foam leakage at the injection hole portion, and there is no need for post-treatment.

Therefore, the structure of the personal watercraft according to the present invention can provide a hull with reduced manufacturing costs.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the overall structure of a small personal watercraft to which the present invention is applied, Fig. 2 is a perspective view showing the foam injection hole provided in the duct, and Fig. 3 is a perspective view showing the foam injection hole in the interior space of the boat. Figure 4 is a side view of the hull showing the flow of the foaming agent, Figure 4 is a partial plan view of the hull showing the flow of the foaming agent when the foaming agent is injected into the interior of the ship, and Figure 5 is a diagram showing the process of foam formation in the interior of the ship and the flow of the foam in the same process. FIG. 6 is a side view of the hull showing the flow of gas discharge, and FIG. 6 is a partial plan view of the hull showing the process of forming a foam in the interior space of the ship and the flow of gas discharge in the same process. 1... Hull, 2... Engine room, 3... Deck, 4... Hull, 5... Duct, 6... Front interior space, 7... Rear interior space, 9... Injection hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A small personal watercraft having an engine room located approximately in the center of the hull and in which the interior space surrounded by the hull deck and hull is filled with foam, It consists of a duct for ventilation of the engine room made of foam and assembled in the ship's interior space, and a foam made by injecting a foaming agent into the remaining ship's interior space through an injection hole provided in the duct. Characteristic of the hull structure of a small personal watercraft. (2) Utility model registration claim 1, in which the injection hole is located inside the duct near the intake port of the duct.
Hull structure of the small personal watercraft described in Section 1. (3) A utility model in which a vent hole for foaming the foaming agent is provided in the deck or hull at the bottom of an accessory part that is located on the upper surface of the deck or hull and is large enough to cover the vent hole. A hull structure of a small personal watercraft according to claim 1.