JPH0634227Y2 - Air boat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an air boat having a transom plate.

(Prior Art) In an air boat having a conventional transom plate,
The bottom cloth was directly attached to the lower end of the transom plate, and the anti-sticking cloth was attached to the inside of the boat.

(Problems to be solved by the invention) However, in such a conventional air boat, driftwood and other suspended matter hit the lower end portion of the transom plate made of a rigid material while traveling and damage the bottom cloth attached to the transom plate. It also damages the transom plate.

In addition, the bottom cloth near the transom plate is likely to be bent and deformed upward due to a strong water pressure during traveling, which not only causes the bottom cloth to be easily torn but also deteriorates the traveling performance (see FIG. 3).

An object of the present invention is to provide an air boat that eliminates such drawbacks.

(Means for Solving the Problems) The present invention provides an air cylinder made of a flexible sheet having airtightness,
In an air boat provided with a rigid transom plate and a bottom cloth made of a flexible sheet, at the lower end portion of the transom plate, an elasticity having a slope wider than the thickness of the transom plate and inclined downward to the lower peripheral surface. It is an air boat characterized by being made by attaching materials.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. The air boat 1 includes an air cylinder 2 made of an airtight flexible sheet material such as a polyvinyl chloride sheet, a rubber cloth, and a tarpaulin, and a transom plate 3 made of a rigid material such as plywood, FRP, and aluminum. And a bottom cloth 4 made of the same material as the body 2 and an elastic material 5 attached to the lower end of the transom plate 3.

The elastic member 5 is a member having elasticity such as synthetic rubber or polyurethane having a substantially L-shaped cross section, or a laminated body of these and a reinforcing member such as cloth, and the inclined surface a inclined downward to the lower peripheral surface in the attached state. have. The length of the elastic material is the same as the length of the lower end portion of the transom plate 3, and the width thereof is wider than the thickness of the transom plate 3, and preferably 10 to 100 mm.
By doing so, a reinforcing effect on the upper curve of the bottom cloth is obtained. Also, the thickness of the lower part of the elastic material is 5 to 20.
mm is preferred. If the thickness is less than 5 mm, the effect of the trim tab, which will be described later, cannot be sufficiently obtained, and if the thickness is more than 20 mm, the resistance of water during running reduces the speed.

The elastic material 5 is attached at the lower end of the transom plate 3 and is attached to the outside of the attached bottom cloth 4 with an adhesive or the like. The elastic material 5 may be attached to the bottom cloth 4. If the elastic material 5 is provided on the outer side, even if it is damaged, the elastic material 5 can be easily repaired only by repairing or replacing it. On the contrary, if the elastic material 5 is attached between the transom plate 3 and the bottom plate 4, the elastic material 5 can be prevented from peeling off due to water flow during traveling.

The cross-sectional shape of the elastic material 5 is substantially L-shaped, but
The shape shown in the figure may be used. It is sufficient that at least the lower peripheral surface of the elastic material has a slope inclined downward.

(Effect) Since the air boat of the present invention has an elastic material attached to the lower end of the transom plate, floating materials such as driftwood hit the lower end of the transom plate and damage the bottom cloth or transom plate during running. There is nothing to do.

In addition, since a slope that slopes downward is formed on the lower peripheral surface of the elastic material, the bow portion is lifted by the wave-making resistance received by the bow portion of the boat, and the stern portion is pushed down, while the stern portion is pushed down. The effect of the trim tab exerting an upward pressure trying to raise is obtained, and the boat bow is pushed down to reduce the holding angle with respect to the water surface, and it is obtained in a quick and stable planing state.

Further, since the bottom cloth near the transom plate is prevented from being bent and deformed upward due to a strong water pressure during traveling, the bottom cloth is not torn or the traveling performance is not deteriorated.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a boat stern showing one embodiment of the present invention, FIG. 2 is a partially cutaway side view of a boat stern showing another embodiment, and FIG. It is explanatory drawing which shows the deformation | transformation of the bottom cloth of the transom board vicinity at the time of the traveling of a boat. 1 ... Air boat, 2 ... Body 3 ... Transom plate, 4 ... Bottom cloth 5 ... Elastic material

Claims (1)

[Scope of utility model registration request] 1. An air boat provided with an air cylinder made of a flexible sheet having airtightness, a transom plate having rigidity, and a bottom cloth made of a flexible sheet, wherein a transom plate is provided at a lower end portion of the transom plate. An air boat characterized in that an elastic material having a width wider than the thickness and having a slope inclined downward is attached to a lower peripheral surface.