JPS5811678Y2 - inflatable boat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inflatable boat made of vinyl, rubber or other soft material that is inflatable and foldable.

Inflatable boats must be constructed with at least two isolated air chambers to eliminate the risk of air leakage.

However, such a structure inevitably requires more adhesive points than a boat with one air chamber.
More adhesive points mean more points that are most susceptible to air, water, and other external pressures, reducing the strength of the boat and putting it at risk of sinking due to damage.

For example, there is a conventionally known two-air chamber structure as shown in Figure 3. Although this structure has the advantage of having no bonding point at the center of the inner periphery, where pressure is most likely to be applied and damage occurs, it is difficult to bond. There is a drawback that there are a total of five locations, A-E, in cross section.

In FIG. 3, 5' is the bottom surface, 6' is the outer air chamber, and 7' is the inner air chamber.

The present invention was created in view of the above, and has two isolated air chambers, and is bonded to the internal part of the torso where pressure is most likely to be applied and damage. In addition, the present invention provides an air pump boat having an inner air chamber having a circular cross section.

This will be explained in detail below with reference to the drawings shown as an example.

Figures 1 and 2 show an example of the boat of the present invention.
2 is a boat fabric made of a suitable soft material extending from the boat bottom 5 to the lower half of the outer circumferential surface of the outer circumferential air chamber 6; 2 is the boat fabric forming the upper half of the outer circumferential surface of the outer circumferential air chamber 6; 3 is the inner surface of the inner air chamber 7; The boat material 4 forming the peripheral surface is a boat material that forms the outer peripheral surface of the inner air chamber 7 and isolates the two air chambers 6 and 7.

Each boat base has an air chamber formed as a body around the outer periphery of the boat when it is inflated to a boat of a predetermined size, and a bottom surface is formed inside the body from the lower side of the body. First, the boat fabrics 3 and 4 that form the inner air chamber 7 are cut to form a body with an inner air chamber 7 on the inside and a peripheral air chamber 6 on the inner and outer sides. Each upper and lower end part is connected to the upper and lower center part of the trunk M long spoon.
At the same time, the inner circumferential edge of the boat fabric 2 that forms the upper half of the outer peripheral air chamber 6 is integrally joined to the center of the soil, and the edge portions of these three boat fabrics are joined together. Adhesive integration 8
do.

On the other hand, the lower central part includes the boat ground at a predetermined distance inward from the peripheral edge of the boat ground 10, which also serves as the bottom surface, as well as the lower ends of the boat grounds 3 and 4, that is, the lower half of the outer peripheral air chamber 6. The parts located inward by that amount are joined together, and the three boat fabric parts are bonded and integrated 9.

Next, a boat is formed by bonding and integrating the peripheral edge of the boat cloth 10 and the outer end of the boat cloth 2 along the length direction of the body on the outer side of the body.

With such a configuration, the boat of the present invention can be molded by gluing four pieces of cut boat cloth at three cross-sectional areas.

Note that the order of joining the boat bases is arbitrary.

When joining the upper and lower ends of the boat bases 3 and 4, the ends of the boat bases 3 and 4 may be joined so as to cross each other as shown in the figure, or, although not shown,
Whether the ends are aligned and joined in the same direction is merely a manufacturing choice and is arbitrary.

As described above, according to the present invention, a boat with two isolated air chambers can be constructed by simply gluing the upper and lower parts of the air chambers, and the outside part, in the length direction of the body. In comparison, there are far fewer adhesive points, which increases the strength of the boat and improves its stability and safety.

At the same time, in an inflated boat, no adhesive is formed near the center of the inner peripheral surface of the body, where the most force is applied, which further reduces the risk of damage. When the outer air chamber is filled with air and inflated, it has a circular cross section, and since it is integrated with the outer air chamber by adhesive at the top and bottom center, it has a fixed shape, and even if the outer air chamber is filled with air and inflated, it will not deform. In addition, a gap is formed between the bottom of the body and the bottom of the air chamber, so the inside of the boat can be used widely outside of this gap. , these various practical effects can be achieved at the same time.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a boat according to the present invention, FIG. 2 is a partially cutaway enlarged cross-sectional view taken along the line ■--■ in FIG. 1, and FIG. 3 is a partial cross-sectional view of a known boat. Codes 1.2 and 3.4 are both boat grounds, 5 is the bottom, 6,
7 is the air chamber, 8, 9, and 10 are the adhesive points.

Claims (1)

[Scope of utility model registration request] In an inflatable boat where the body of the outer periphery of the hoard consists of two air chambers separated from the inside and outside, the boat fabric forming the inner circumferential surface of the inner air chamber and the boat fabric forming the outer circumferential surface are placed at the upper and lower center of the torso section. They are joined along the width direction to form an inner air chamber with a circular cross section, and at the same time, in the center of the soil, the inner peripheral edge of the boat material that forms the upper half of the outer peripheral surface of the outer air chamber is also joined. These are glued together, and in the lower center part, the part located from the peripheral edge of the boat material that also serves as the bottom surface to the inside of the peak of the upper half of the outer peripheral surface is also joined at the same time, and these are glued together and L- 1. An inflatable boat having a structure in which the circumferential edge of the boat fabric that also serves as the bottom surface and the outer edge of the boat fabric that forms the upper part of the outer air chamber are integrally bonded together.