JPS63166693A - Display device for small jet propulsion boat - Google Patents

Abstract

PURPOSE:To make it being surely showable to other ships, by taking in water through a conduit from a water intake during boat sailing, and making the water so as to be jetted upward from a nozzle at a stern part. CONSTITUTION:A pump 8 is set up in the hull 1, while a suction side hose 81 connected to this pump is guided to a ship's bottom, and a water suction port 83 to be opened to the bottom is formed in the tip part. And, the hose 82 connected to the discharge side of the pump 8 is guided to a stern part, and a water nozzle 84 is formed in the tip. The water taken in by the pump 8 is jetted upward out of the water nozzle 84 via the hose 82, whereby existence of the hull 1 is showable to other ships.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a display device for a small jet propulsion boat that glides on the surface of water.

(Prior art li) Recently, small jet propulsion boats, which are small boats with engines that glide on water, have come into wide use. These small jet propulsion boats are used on a variety of water surfaces, so they sometimes glide along the waves. For this reason, when it is positioned between waves while planing, it may become invisible to other ships. Examples of vehicles that have this problem include automatic buggies that drive through rugged deserts, and these vehicles display flags to display their presence, thereby preventing collisions with other vehicles. That's what I do.

It is possible to attach this flag to the above-mentioned small jet propulsion boat, but the drawback is that attaching the flag would require a large-scale structure such as installing the flag pole, and the resulting resistance would increase, reducing propulsion efficiency. be.

Furthermore, since small jet propulsion boats are vehicles for enjoying maneuverability, they often tip over, and if the boat is fitted with the above-mentioned flag, there is a risk that the flagpole will break when the boat falls over, causing harm to the occupants.

(Purpose of the Invention) This invention was made to solve such conventional problems, and there is no risk of harm to passengers when it falls over, there is little reduction in propulsion efficiency, and it is easy to use for other ships. To provide a display device for a small jet propulsion boat that can reliably display its own presence.

(Structure of the Invention) The present invention is a small boat that glides underwater, and is equipped with a water jet device having a water supply means and a water conduit, and the water conduit is guided from a water intake port to a water spout at the stern of the ship. , the water intake port opens at a portion below the water surface when the hull is planing,
The water spout opens above the water surface at the stern.

The water supply means may be configured with a pump provided in the middle of the water pipe. Further, the water supply means may be configured such that the water intake port is oriented in the water flow direction underwater. Furthermore, the water conduit may be constructed of a flexible hose.

With the above configuration, water is injected upward from the spout at the stern of the ship through the water intake pipe while the ship is sailing. Therefore, it is safe, simple, and has a small drop in propulsion efficiency, making it easy for other ships to The presence can be clearly displayed.

(Example) In FIGS. 1 to 3, a bottom plate 2 and an upper deck 3 are connected at their peripheral edges to form a hull 1 of a jet propulsion boat, and a portion surrounded by the bottom plate 2 and the upper deck 3 A sealed engine room is formed in the engine room, and an engine 4 is installed in the engine room. Further, a cockpit 20 is formed in the rear portion thereof, and a seat 5 is formed to protrude from the center portion in the width direction of the ship. A protrusion 60 is formed on the upper deck 3, and a handle 6 is formed at the upper end of the protrusion 60, so that when the person 10 on the seat 5 puts his or her feet on the cockpit 20, the handle 6
I'm trying to hold it and drive the ship.

A flow path 7 is formed below the seat 5, a water intake lower 0 that opens to the bottom of the ship is formed at one end of this flow path, and a nozzle 71 facing toward the stern rear is provided at the other end so that the direction can be changed. It is provided. Further, a propeller (not shown) is attached to the tip of the propeller shaft 40 rotated by the engine 4,
When this propeller rotates in the waterway 7, it sucks in water from the water intake lower 0 and discharges it from the nozzle 71, thereby turning and propelling the hull 1 in a predetermined direction.

A pump 8 is installed at an appropriate position in the hull 1, and a suction side hose (water conduit) 81 connected to this is led to the bottom of the ship, and a water inlet 83 that opens to the bottom of the ship is formed at its tip. A discharge side hose (water conduit) 82 is led to the stern, and a water spout 84 is formed at its tip. The water spout 84 is oriented rearward and upward from the rear end of the floor 21 of the cockpit 20.

In the above configuration, while the boat is planing, the pump 8 is driven to suck water from the water inlet 83, and the water is drawn from the water spout 84 through the hose 81.82 as shown by the arrow 9 in FIG.
Squirt backwards and upwards as shown. by this,
Even when the hull 1 is located at the bottom of a wave, other ships can know the presence of the hull 1 because of this jet of water. Moreover, the propulsion resistance of the hull 1 does not increase due to this water jet.

In addition, with the above configuration, even if the hull 1 falls, the hull 1
Since there are no protruding objects, there is no risk of harm to person 10. Further, since the water is led from the water inlet to the spouting part by a hose, there is an advantage that the water spouting part can be installed at any position on the hull 1 where it will not get in the way.

FIG. 4 shows another embodiment of the present invention, in which a hose 85 is attached to pass through the peripheral wall of the rear end of the flow path 7 through which the propeller rotates and the water jet is ejected in the stern direction. A water inlet 86 facing upstream of the hose 85 is formed.
A water spout (not shown) similar to the above is formed at the other end. In this configuration, when the ship is planing, a high-speed water flow is generated in the flow path 7 by the valve, and this water flow sends water from the water inlet 86 through the hose 85 and from the water spout (not shown) as shown in FIG. Water is sprayed upwards. Even with this configuration, the resistance received by the water inlet 86 is very small, and the influence of propulsion resistance on the hull is small.

(Effects of the Invention) As explained above, this invention is designed to spray water upward from the stern while planing, and there is no risk of harm to passengers when the hull overturns, and it is a simple method. The configuration allows you to reliably display your presence to other ships,
It can prevent ship collisions.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view of a hull showing an embodiment of the invention, Fig. 2 is a plan view of its layout, Fig. 3 is an enlarged perspective view of its stern, and Fig. 4 is another embodiment of the invention. FIG. 3 is an enlarged longitudinal sectional view of the rear end of the flow path. 1... Hull, 4... Engine, 5... Seat, 6...
... Handle, 7... Channel, 8... Pump, 81.
82.85...Hose (ml water tube), 83.86...
・Water inlet, 84...Water spout.

Claims (1)

[Claims] 1. A small boat that glides underwater, and is equipped with a water jetting device having a water supply means and a water conduit, the water conduit being led from the water intake to the water spout at the stern, A display device for a small jet propulsion boat, characterized in that the water inlet opens below the water surface when the boat is planing, and the water spout opens above the water surface at the stern. 2. Claim 1, characterized in that the water supply means is constituted by a pump installed in the middle of the water pipe.
A display device for a small jet propulsion boat as described in . 3. The display device for a small jet propulsion watercraft as set forth in claim 1 or 2, wherein the water supply means is configured such that the water intake is oriented underwater in the direction of water flow. 4. The display device for a small jet propulsion boat as set forth in claim 1, 2, or 3, wherein the water conduit is comprised of a flexible hose.