JPH028956B2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention uses a hull (hereinafter referred to as an air-type hull) that has an inflatable air chamber around it and a bottom sheet surrounded by the air chamber. It's about a boat.

BACKGROUND ART Conventionally, boats with pneumatic hulls have been widely used as rowing boats and motor boats because they are highly portable. However, there are many problems when using it for yachts that sail with sails.
It wasn't used much.

Techniques for using a boat with such a pneumatic hull as a yacht have been disclosed, for example, in Japanese Utility Model Application Publication No. 109300/1983. In the device disclosed in this document, a bottom plate is placed on the hull of an air type boat, and a plow plate having a T-shaped cross section is connected to the bottom plate with a rubber string.

In addition, as an example of a boat that combines an air-type hull and a splittable bottom plate to increase portability,
There is one disclosed in Publication No. 25637. This is made by stretching the bottom cloth 2 into a V-shaped cross section using a member whose cross section is formed into a T-shape by a beam 6 and a backing plate 8.

Problems to be Solved by the Invention However, the following problems occur in the conventional boat as described above.

The former example is easy to assemble, but
It is considered virtually impossible to use it unless the waves are extremely calm and the wind is weak. In other words, the rubber string that connects the weight plate to the bottom plate also binds the air chamber, and when the hull is immersed in water, the air chamber is cooled and the air chamber becomes smaller as the air contracts. As a result, the rubber string becomes somewhat loose, and the strength of the connection between the weight plates becomes weaker. Additionally, the weight plate is thought to act as a centerboard to prevent cross-flow while sailing, and in strong winds, a fairly strong force acts on the weight plate, stretching the rubber strings and making the sailing unstable. Additionally, if a yacht capsizes while traveling, it is generally done by putting one's foot on the centerboard, but strong force is also applied to the centerboard in such cases, making it difficult to use it in this way with a structure like the former example. it is conceivable that. In other words, the former example is thought to be easy to assemble and was developed to be suitable for recreational use in extremely calm waves and light wind conditions.

In the latter example, the beam 6 itself is divided into multiple parts, and there are places where the divided parts of the beam 6 and the divided parts of the bottom plate 3 coincide, and the beam 6 does not have the effect of reinforcing the bottom plate 3. . Further, only one beam 6 is provided at the center of the bottom plate 3, and the beam 6 cannot be expected to have much of a reinforcing effect against twisting of the bottom plate 3. Although this latter example can be expected to be sufficiently effective when used as a motor boat or a rowing boat, it is considered unsuitable for use as a full-scale yacht.

The present invention solves the above problems,
The purpose is to provide a boat that can be used as a full-fledged yacht using an air-type hull.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention is provided with two keels that straddle the divided parts of the splittable bottom plate and are detachably attached to the bottom plate via the bottom sheet of the hull. This is because the part that attaches to the bottom plate is made wider than the other parts, has mounting bolts embedded in the ends, and both keels are attached to the bottom plate via gaskets.

Function When the two keels are connected to the bottom plate by the above means, the cross section of the bottom plate and the keel becomes a π-shape, and the keel strongly reinforces the twisting of the bottom plate. In addition, the keel is firmly attached to the bottom plate, and even if a strong force is applied to the keel, the keel will not separate from the bottom plate.

Embodiment An embodiment of the boat of the present invention will be described below with reference to the drawings.

FIG. 1 is a side partial sectional view of a boat according to a first embodiment of the present invention when used as a yacht.
FIG. 2 is a partially enlarged sectional view, FIG. 3 is a top view, and FIG. 4 is a partially perspective view. Reference numeral 1 denotes an air-type hull having an inflatable air chamber 2 around it, and a bottom sheet 3 is stretched so as to be surrounded by the air chamber 2. 4 and 5 are bottom plates each divided into multiple parts,
Each has a bolt hole 6, 7, 8, 9 and is placed on the bottom sheet 3. Reference numerals 10 and 11 each represent a keel, and a square piece 12 is attached to the upper end of the keel where it is attached to the bottom plate, and the keel is formed wide.
Numerals 13, 14, 15, and 16 are bolts, respectively, whose ends are located at the upper ends of the keels 10, 11, and are buried in positions corresponding to the bolt holes 6, 7, 8, and 9. 17, 18, 19 are each bolt 1
This is a patch that surrounds 3, 14, and 15. 20 is a nut that is connected to the bolt. Reference numerals 21 and 22 are rudders attached to the rear ends of the keels 10 and 11 via hinges 23, respectively. Further, grooves 24 and 25 are cut into the rear ends of the rudders 21 and 22, and a strong wire 26 made of stainless steel or the like is inserted into the grooves 24 and 25.
is inserted. 27 is a guide pipe for the wire 26, and 28 is a handle.

A mast is also attached to the hull as shown in Figure 1.

The boat of the present invention is constructed as described above, and its usage will now be described.

First, the keels 10 and 11 are connected to the divided bottom plates 4 and 5 via the bottom sheet 3, thereby making the bottom plates 4 and 5 integral with each other. Then keel 10,
11 is connected to the bottom plates 4 and 5 at the wide part at the upper end, so that it is firmly connected to the bottom plates 4 and 5. The rudders 21 and 22 can be operated by operating the handle 28 of the wire 26.

FIG. 5 shows a second embodiment of the present invention, in which two plates are combined in a V-shape to form a keel 1.
0,11.

Effects of the Invention As explained above, the boat of the present invention includes two keels that straddle the divided parts of the splittable bottom plate and are detachably attached to the bottom plate via the bottom sheet of the hull, and both keels are attached to the bottom plate. The mounting part of the keel is made wider than other parts, has a mounting bolt buried in the end, and both keels are attached to the bottom plate via packing, so the cross section of the bottom plate and both keels is shaped like a π. The keel strongly reinforces the twisting of the bottom plate. When used as a sailboat, this is particularly effective against twisting caused when sailing in crosswinds. Also, when assembling a boat, it is assembled on the ground, and during the assembly process it stands on the ground with two keels, so it stands stably on the ground and can be attached to sails etc. during the assembly process. Therefore, even if a person enters the ship, the hull will not be distorted. Also, even if assembled in a rocky area, etc.
Since the hull is floating above the ground, there is no need to worry about damage to the hull. This is an extremely effective effect on vessels that are easily damaged by sharp objects, such as air-powered hulls. Furthermore, since the keel is attached to span the divided portions of the bottom plate, the bottom plate becomes a solid one piece, and there is no problem with dividing the bottom plate.

[Brief explanation of drawings]

FIG. 1 is a side partial sectional view of the boat according to the first embodiment of the present invention when used as a yacht, FIG. 2 is a partial enlarged sectional view of the first embodiment of the present invention,
Figure 3 is a top view of the same, Figure 4 is a perspective view of the same part, Figure 5
The figure is a sectional view of a second embodiment of the invention. 1... Air type hull, 2... Air chamber, 3... Bottom sheet, 4, 5... Bottom plate, 6, 7, 8, 9... Bolt hole, 10, 11... Keel, 12... Square timber ,
13, 14, 15, 16... Bolt, 17, 1
8,19...Patsukin, 20...Natsuto, 21,
22... Rudder, 23... Hinge, 24, 25...
Groove, 26... Wire, 27... Guide pipe, 28
...Toride.

Claims (1)

[Claims] 1. A hull having a bottom sheet surrounded by an inflatable air chamber, a bottom plate provided over almost the entire bottom of the hull and can be divided into a plurality of parts, a mast, and a rudder. and two substantially parallel keels spaced apart from each other that span the divided portions of the splittable bottom plate and are removably attached to the bottom plate via the bottom sheet,
The two keels are characterized in that the part to be attached to the bottom plate is wider than the other part, and has a mounting bolt buried at the end, and the two keels are attached to the bottom plate via a packing. A boat.