KR100479928B1 - motorboat equipped with safety - Google Patents

Abstract

The present invention relates to a motor boat, and more particularly to a motor boat that does not blow out to the outside even if the tube used in the motor boat is damaged. That is, the tube is formed of a double wall, the outer wall is formed of rubber and the inner wall is formed of a foamed resin, the partition is mounted inside the partition at a predetermined interval is separated into a plurality of compartments. And the closed air bubbles of the foamed resin is formed in the size of 0.1-0.3 mm.

Therefore, even if the rubber tube of the outer wall is damaged, the air in the tube does not escape to the outside, and also separates the tube into several compartments, so that even if damage to one compartment prevents the air in the remaining compartments leak out. Motor boat safety is increased.

Description

Motorboat equipped with safety.

The present invention relates to a motor boat, in particular, the tube used in the motor boat outer wall is made of a rubber tube, the inner wall is made of foam resin so that the wind does not escape even if the tube of the motor boat is damaged, the motor boat improved safety It is about.

In general, motorboats are small ships propelled by internal combustion engines and are widely used in rescue boats, fire fighting boats, instantaneous boats, and the like. Motor boats used as described above usually focus on speed, and various linear shapes are adopted in consideration of water resistance. Normal mobile boats exclude water, such as the weight of the hull, and are drainage boats that split and move forward when moving forward, but slide boats are adopted in high-speed racing boats. When the boat starts running, the water pressure exposes the entire bottom to the water and the bottom slides in contact with the water. The bottom of the boat is flat and the rear part is lower than the whole, and the rapid speed of 100 km / h is achieved by reducing the water resistance by attaching a step called a step.

The inside of the tube used for such a motor boat is filled with air of about 2 atm, so that the hull balances while maintaining buoyancy so as not to sink.

However, the rubber tube used for the motorboat is easily torn by a sharp object. That is, when the boat is docked or unloaded, it is easy to damage the tube by the user's carelessness. It can be fatal.

There is a "rubber boat hull" filed and registered in the Republic of Korea Utility Model Application No. 194-5397 in order to prevent air from falling out by damage to the tube made of rubber as described above. Figure 6 shows the mounting position of the rubber tube 1120 around one end surface of the "rubber boat hull" according to the prior art, the hull of the rubber boat is such that the rubber tube 1120 does not protrude at least outside In order to guide the rubber tube in close contact with the hull 1110 side, a rubber tube space formed on the circumference of the hull and an expansion rib 1130 protruding in the hull so that the rubber tube is not visible at least vertically from the top of the hull are provided. It is a structure formed.

However, the rubber boat as described above increases the volume and weight of the hull because the expansion rib 1130 is additionally mounted on the upper surface of the rubber tube 1120, the rubber tube 1120 by a sharp object on the side May be torn, and in this case, there is a problem that the air in the rubber tube 1120 comes out.

Accordingly, the present invention was devised to solve the above problems, and an object of the present invention is to provide an external device at the time of motorboat driving or berthing without installing a new protective plate on the upper or lower surface of the rubber tube. Even if a rubber tube is torn by a sharp object, air in the tube does not leak to the outside to provide a motor boat with safety that can maintain buoyancy as it is.

The above object is achieved by the present invention, according to one aspect of the present invention, the motor boat equipped with safety consists of a hull (Hull) submerged in the sea surface (Deck) and the tube is mounted on top of the hull, The tube is characterized in that the outer wall is made of rubber and the inner wall is a double wall made of foamed resin.

In addition, the inner wall of the tube is partitioned at a predetermined interval, the foam of the foamed resin is characterized in that the closed cell closed.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and like reference numerals designate like parts throughout the drawings.

1 is a perspective view of a motor boat with safety according to an embodiment of the present invention, Figure 2 is a partially cut perspective view of a rubber tube mounted to the motor boat according to FIG.

As shown in the drawings, the motor boat with safety according to the present invention shown by the reference numeral 10 is a hull (Hull) that is submerged in the sea surface (deck 150 mounted on the top of the hull) and the tube 120, etc. Is done.

The hull is a part submerged in the sea surface while forming the bottom of the motor boat is completed by laminating reinforcement plastic (FRP) by laminating by hand laying method (hand lay up). As such, when forming the hull 110, the molding of reinforced plastics has good molding workability, and its specific gravity is about one quarter lighter than iron, and the strength to weight is large, and the corrosion resistance and durability are excellent. Because I am.

In addition, the tube 120 is composed of a double, the outer wall 121 is formed of a rubber as in the conventional, the inner wall 125 is formed of a foaming resin. The foamable resin is not particularly limited, and the specific air tightness may be formed to a size of 0.1-0.3 mm by the foaming agent while the specific gravity is very small. Such foamable resins may be polyvinyl chloride paste resins, polyvinyl chloride straight resins, polyurethane resins, nitro cellulose resins, and as blowing agents, propam, petroleum ether, carbon dioxide, pentane, hexane, heptane, cyclo Decomposable to generate gas by decomposing such as volatile blowing agent such as hexane, benzene, toluene, dichloromethane, etc., which is decomposed by heating, or ammonium bicarbonate, sodium bicarbonate, sodium borohydride, azo dicarboxylic acid ammonium carbonate Use blowing agent.

The compounding agent added in the preparation of the foamable resin is composed of a blowing agent, a filler, a softener, a vulcanizing agent, and the like, which releases a foaming gas to produce a myriad of micro sells.

The blowing agent uses sodium bicarbonate (NaHCO ₃ ), which is an inorganic foaming agent. The sodium bicarbonate has a relatively high decomposition temperature of 60 ° C. to 150 ° C., but it is advantageous to form microcells with a gas generation amount of about 260 ml / g. However, nitroso-based compounds, P-toluenesulfonylhydrazine and the like can also be used.

In order to strengthen the bond between the rubber molecules, increase the elasticity, tensile strength, etc., and to slow aging (Sulfur) and magnesium oxide (Mgo) as a vulcanization accelerator is used by adding a certain amount. Process oil is used as the softener, and stearic acid is used as a plasticizer. The plasticizer is added to the rigid polymer to have plasticity, thereby expanding air in the tube to improve adhesion to the rubber tube, which is the outer wall 121.

The foamed resin prepared in this way is formed inside a myriad of closed air bubbles to block the air inside and outside. If the foam of the foamed resin is made of an open bubble, the air of high pressure (2 atm) is released to the outside. That is, when damage is caused to the rubber tube, which is the outer wall 121, the air inside escapes through the open bubble of the foamed resin to the outside, and thus cannot achieve the object of the present invention.

The inner wall 125 may be bonded with an adhesive to improve adhesion to the outer wall, the thickness of the inner wall 125 is formed too thin if the rubber tube of the outer wall 121 is damaged when the inside air pressure (about 2 Since the inner wall 125 is protruded to the outside by the air pressure), it is preferable to have a thickness of 3 mm or more at least 2 atm.

In addition, a plurality of partitions 127 are formed in the tube 120 to divide the inside of the tube 120 into a plurality of compartments. In this way, even if air is leaked out due to damage to the tube 120, the air does not escape from the entire tube 120. That is, the air escapes from only one damaged compartment, and the air does not escape from the remaining compartments, so that it can operate more safely.

According to the above configuration, the inner wall of the foamed resin is formed on the inner side of the tube made of rubber, so that the air in the tube does not escape to the outside even if the outer wall made of rubber is damaged. By separating into compartments, if one compartment is damaged, the air in the other compartment does not leak out. Therefore, it is possible to carry out the mission more safely even when docked in places such as sharp rocks in bad weather, such as the rescue boat of the Maritime Police Agency increases the commerciality of the motor boat.

While the invention has been shown and described with reference to certain preferred embodiments, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. Those of ordinary skill in the art can easily know. In addition, the motor boat in the present invention is not limited to the shape formed by the hull and the deck and the tube formed while wrapping the deck, such as coastal guards, it can be employed in a rubber boat for injecting air.

1 is a perspective view of a motor boat equipped with safety according to an embodiment of the present invention.

Figure 2 is a partially cutaway perspective view of the tube mounted to the motor boat according to Figure 1;

Figure 3 is a partially cutaway perspective view of a tube mounted on a motorboat with safety according to another embodiment.

4 is a partially cutaway perspective view of the tube according to FIG. 2;

5 is a partially cutaway perspective view of a tube mounted on a motorboat according to the prior art;

Figure 6 is a cross-sectional view of one side of the tube is installed in the motor boat according to another prior art.

* Description of the symbols for the main parts of the drawings *

10: motor boat, 110: hull (Hull),

120: tube, 121: outer wall,

125: inner wall, 127: bulkhead,

150: deck,

Claims (4)

In the motor boat consisting of a hull immersed in the sea surface and a deck (150) mounted on the upper portion of the hull and a tube 120, The tube 120 is the outer wall 121 is formed of rubber, the inner wall 125 is a double wall formed of a foam resin, the partition wall 127 is mounted at a predetermined interval therein, the outer wall 121 and the inner wall ( 125) is bonded with an adhesive, the foam of the foamed motor boat with safety, characterized in that the closed air bubbles. delete delete delete