JPH11157483A - Small ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent any possible penetration of water into the hull from an inpsection opening even in the case where this hull is caused to lean because of its simple structure. SOLUTION: In this small vessel which has a body 2 made up of watertightly connecting a hull 3 and a deck 4 together, setting up a seat in a seat block 4e of this deck 4, and forms each of footsteps 4a and 4b at both sides of this seat block 4e, raising the deck 4 at the outside of these footsteps 4a and 4b upward and thereby forming a bulwark 50, and further mounting an engine 9 in the body 2 beneath the seat, an inspection opening 4d with a size where an engine body 90 is passable, is installed in a top face 4c of the seat block, and thereby almost the whole body of this inspection opening 4d forms such a bouyancy space K as to be situated higher than the waterline L in a state that the ship body 2 is tilted as far as 90 degrees, in the bulwark 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small boat equipped with an engine in a hull below a seat.

[0002]

2. Description of the Related Art Some small boats have, for example, a hull in which a hull and a deck are connected in a watertight manner, a seat is arranged on a seat table of the deck, and an engine is mounted in the hull below the seats. In such a small boat, an inspection opening is formed in the deck for performing maintenance such as maintenance and inspection of the engine.

[0003]

The inspection opening formed in the deck as described above is formed in such a size that the main body of the engine can pass through the upper surface of the seat base, so that the maintenance is excellent.

By the way, if an inspection opening is formed on the upper surface of the seat table, water enters the hull from around the inspection opening and between the seats when the inspection opening is located below the waterline with the hull tilted. The sealing structure around the inspection opening and between the seat may be complicated to prevent the sealing.

The present invention has been made in view of the above points, and provides a small boat which has a simple structure and can prevent water from entering the hull from an inspection opening even when the hull is inclined. It is intended to be.

[0006]

Means for Solving the Problems In order to solve the above problems and achieve the object, the present invention has the following constitution.

According to the first aspect of the present invention, there is provided a hull in which a hull and a deck are connected in a watertight manner, a seat is arranged on a seat base of the deck, and a foot step is formed on both sides of the seat base. In a small boat in which a deck outside the footstep is raised upward to form a bulwark, and further equipped with an engine in the hull below the seat,
An inspection opening having a size that allows the body of the engine to pass through is provided on the upper surface of the seat table, and substantially the entire inspection opening is located above a waterline in a state where the hull is inclined by 90 degrees. A small boat, wherein a buoyancy space is formed in the bulwark. ].

According to the first aspect of the present invention, substantially the entire inspection opening is located above the waterline when the hull is tilted by 90 degrees, so that the inspection opening can be simple even when the hull is tilted. Water can be prevented from entering the hull. Further, by forming a buoyancy space in the bulwark, buoyancy can be increased, and the inclination of the hull when re-boarding from underwater on the side of the hull can be suppressed.

According to a second aspect of the present invention, there is provided a small boat according to the first aspect, wherein a container is formed in the bulwark. ].

According to the second aspect of the present invention, in addition to the first aspect, by using the inside of the bulwark as a container, it is easy to secure the volume of the container.

According to a third aspect of the present invention, there is provided a method according to the first aspect, wherein a storage case is formed behind the foot steps formed on the decks on both sides of the sheet so as to connect the seat table and the bulwark. Item 7. A small boat according to item 1. ].

According to the third aspect of the present invention, in addition to the first aspect, the storage compartment is formed behind the footstep so as to connect the seat table and the bulwark, so that the storage compartment can also be used as a buoyancy space. The inclination of the hull is further suppressed, and the inspection opening is easily located above the waterline.

According to a fourth aspect of the present invention, there is provided a small boat according to any one of the first to third aspects, wherein a footrest is formed on both sides of the seat so that the upper surface of the bulwark is substantially horizontal. . ].

According to the fourth aspect of the present invention, when re-boarding from underwater on the side of the hull, the board can be easily boarded without slipping due to the footrest on the upper surface of the bulwark.

The invention according to claim 5 is characterized in that the inspection opening is located substantially above the waterline at all the inclination angles in the state where the hull is inclined.
A small boat according to any one of the above. ].

According to the fifth aspect of the present invention, since the inspection opening is located substantially above the waterline at all the inclination angles where the hull is inclined, even if the hull is inclined more reliably with a simple structure. Water can be prevented from entering the hull through the inspection opening.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a small boat according to the present invention will be described below with reference to the accompanying drawings. This embodiment is applied to a water jet propulsion boat, and FIG. 1 is a side view of a water jet propulsion boat with a container section cut away, FIG. 2 is a plan view of the water jet propulsion boat, and FIG. FIG. 4 is a cross-sectional view taken along the line IV-IV of FIG. 2, FIG. 5 is a cross-sectional view showing a state in which the hull is tilted by 90 degrees, and FIG. 6 is a state in which the hull is tilted. It is a figure which shows the state in which an inspection opening is located substantially above a waterline at the inclination angle of.

The water jet propulsion boat 1 is a small boat that jets water sucked from the bottom of the boat to the rear. The hull 2 of the water jet propulsion boat 1 has a bathtub-shaped hull 3 and a lid-shaped deck 4 water-tightly connected with a gunnel 5, and foot steps 4a and 4b extending in the longitudinal direction of the hull are formed on the left and right side edges of the deck 4. Of structure.

On the upper surface 4c of the seat table of the deck 4, a straddle-type seat 6 which can be seated by a plurality of occupants is detachably arranged. The straddle-type seat 6 is a hull in the longitudinal direction of the hull 2. It is located on the center line. A steering handle 7 is provided in front of the straddle-type seat 6 so as to be steerable left and right, and a hatch cover 8 is provided in front of the steering handle 7 of the deck 4 so as to be openable and closable. A storage box 80 is provided below the hatch cover 8 inside the deck 4, and the opening 81 of the storage box 80 is connected to the hatch cover 8.
Is openable and closable. A seal member 82 is provided between the periphery of the opening 81 of the storage case 80 and the hatch cover 8, and seals so that water does not enter the opening 81 of the storage case 80.

At a position below the rear edge of the hatch cover 8,
A speedometer 85 is attached to the deck 4, and the main body of the speedometer 85 is a storage case 8 fixed to the deck 4.
0, and the display section of the speedometer 85 is covered by the hatch cover 8. A storage compartment 86 is provided on the deck 4 between the steering handle 7 and the straddle-type seat 6, and an opening 87 of the storage compartment 86 can be opened and closed by a lid 88. Around the opening 87 of the storage bin 86 and the lid 88
A seal member 89 is provided between them to seal water from entering through the opening 87 of the storage box 86.

An engine 9 is disposed below the straddle-type seat 6 in the hull 2. A fuel tank 10 is disposed in front of the engine 9, and a jet propulsion device 11 is disposed in the rear. I have. An injection pipe 70 of the fuel tank 10 is attached to the deck 4, the injection cap 71 is opened, and fuel is supplied through the injection pipe 70.

An inspection opening 4d is formed above the engine 9 of the deck 4, and the inspection opening 4d is covered with a detachable straddle-type seat 6. The inspection opening 4d is opened in the upper surface 4c of the seat table. It has a size that allows the main body 90 from which the pipe 94 has been removed to pass through. The operator operates the engine 9 disposed in the hull 2 through the inspection opening 4d.
The inspection opening 4d is large enough to allow the main body 90 including at least a crankcase, a cylinder block, a cylinder head, etc. to pass through. Formed.

A seal member 60 is provided between the periphery of the inspection opening 4d and the bottom plate 6a of the straddle type seat 6, and the inspection opening 4d is provided.
A seal is provided to prevent water from entering the hull 2 from the point d. In addition, the inspection opening 4d is covered with the straddle-type seat 6, so that the appearance is excellent.

The jet propulsion device 11 is provided at the rear of the hull 2,
A propulsion duct 12 having an inlet opening on the bottom 2a is provided, and a nozzle deflector 13 for adjusting the traveling direction of the ship is attached to a discharge port opening behind the propulsion duct 12. An impeller 14 is provided in the middle of the propulsion duct 12, and a front end of an impeller shaft (propulsion shaft) 15 of the impeller 14 is connected to the engine 9.
Is connected via a power transmission member to the rear end of the crankshaft.

In the hull 2, a pair of left and right intake ducts 20 are provided. The air intake duct 20 introduces air outside the boat into the boat, and the air inlet 20a of the air intake duct 20 passes through the upper surface 4c of the seat base and the bottom plate 6a of the straddle-type seat 6.
, And a discharge port (opening inside the ship) 20b is opened at a lower portion of the engine 9. The lower end of the intake duct 20 is bent forward along the engine 9, and is disposed using a dead space above the exhaust manifold 36 and the intake pipe 93.

The engine 9 is a water-cooled two-stroke parallel two-cylinder engine, and is mounted on the bottom 2a with the crankshaft facing the hull center line in the longitudinal direction of the hull. Here, an elastic member 23 is interposed between the engine 9 and the bracket 91 on the boat bottom 2a, and is configured to absorb an impact when a wave collides with the hull 2 by the elastic member 23.

A throttle body 34 is connected to the engine 9, and a butterfly type throttle valve which is opened and closed by a throttle valve driving link member is provided in the throttle body 34. Each throttle body 34
An intake silencer 35 common to each cylinder is connected to the upstream side of the hull in the longitudinal direction of the hull. The intake silencer 35 has a box shape, and an intake inlet 35a is opened at a lower surface of a front end thereof. An exhaust manifold 36 is connected to the engine 9. An exhaust expansion pipe 37, a water lock 38, and a rear exhaust pipe 39 are sequentially connected downstream of the exhaust manifold 36, and exhaust gas from each cylinder is discharged into water.

The deck 4 of the hull 2 has a foot step 4
The bulwark 50 is formed by raising the outer ends of a and 4b upward. The front side of the bulwark 50 extends to the side of the steering handle 7, and the rear side extends to the rear of the foot steps 4 a and 4 b formed on the decks 4 on both sides of the straddle-type seat 6.
A storage case 51 is formed at the rear of 4b so as to connect the seat table 4e and the bulwark 50.

A hinge 53 is provided on the side of the hull in the opening 52 of the storage case 51, and a lid 54 that covers the opening 52 of the storage case 51 can be opened and closed by the hinge 53. An opening / closing lever 55 is provided at the opening 52 of the storage case 51 on the seat side, and the lid 54 is locked or unlocked by the opening / closing lever 55. Lid 54
Cover portion 54a extends above and covers the open / close lever 55, and when re-boarding from the water behind the hull 2, the occupant's body comes into contact with the open / close lever 55 and the lid 54 is opened carelessly. I try not to be.

The central portion 54b of the lid 54 is inclined so that the central side becomes lower, and a non-slip 57 is provided there. When re-boarding from the water behind the hull, the slip prevention 57 reduces slipping of the occupant's body, making it easy to board from behind.

As shown in FIG. 5, a buoyancy space K is formed in the bulwark 50 such that substantially the entire inspection opening 4d is located above the waterline L when the hull 2 is inclined at 90 degrees. . Substantially the entire inspection opening 4d is
Is located above the waterline L in a state of being tilted by 90 degrees, so that even if the hull 2 is tilted with a simple structure, water can be prevented from entering the hull 2 from the inspection opening 4d. Further, by forming the storage box 51 in the bulwark 50, buoyancy can be increased, and the inclination of the hull 2 when re-boarding from underwater on the side of the hull 2 can be suppressed.

Further, by forming the storage box 51 in the bulwark 50 and using the inside of the bullwork 50 as a storage box, it is easy to secure the volume of the storage box 51.

The decks 4 on both sides of the straddle-type seat 6
In the rear of the foot steps 4a and 4b formed on the base, the seat table 4e and the bulwark 50 are connected so that
Is formed, the storage case 51 can also be used as the buoyancy space K, and the inclination of the hull 2 is further suppressed, and the inspection opening 4d is easily located above the water line L.

Further, since the upper surface of the bulwark 50 is made substantially horizontal on both sides of the straddle-type seat 6 to form the footrest portion 4f, when re-boarding from underwater on the side of the hull 2,
The foot can be easily boarded without slipping due to the footrest 4f on the upper surface of the bulwark 50.

Further, a storage case 51 is formed behind the foot steps 4a and 4b so as to connect the seat table 4e and the bulwark 50, and the foot steps 4a and 4b are formed.
Since the water accumulated in the hull 3 cannot be discharged to the rear, a drain passage 40 is provided across the rear portion 3c of the hull 3 and the foot steps 4a and 4b of the deck 4. , 4b is drained to the rear of the hull. The drain passage 40 includes a drain port 41 fixed to the rear portion 3 c of the hull 3 and foot steps 4 a and 4 b of the deck 4.
And a connecting pipe 43 made of an elastic body for connecting the drain port 41 and the water guiding port 42 to each other.

A work opening 51b is formed at the bottom 51a of the storage case 51 near the connecting pipe 43 connecting the hull side and the deck side. The working opening 51b is normally closed by the lid 48. At the time of assembling 43 or maintenance, the lid 48 can be opened to assemble or remove the connecting pipe 43. Thus, the connection pipe 43 between the hull side and the deck side
A container 5 in which at least a part is detachably formed in the vicinity.
1 is arranged.

Further, as shown in FIG. 6, by forming a buoyancy space such that the inspection opening 4d is located substantially above the water line L at all the inclination angles where the hull 2 is inclined, a simple structure is achieved. Even when the hull 2 is tilted, it is possible to prevent water from entering the hull 2 through the inspection opening 4d.

[0038]

As described above, according to the first aspect of the present invention, substantially the entire inspection opening is located above the waterline when the hull is tilted 90 degrees, so that the hull tilts with a simple structure. Even in this case, it is possible to prevent water from entering the hull through the inspection opening. Further, by forming a buoyancy space in the bulwark, buoyancy can be increased, and the inclination of the hull when re-boarding from underwater on the side of the hull can be suppressed.

According to the second aspect of the present invention, in addition to the first aspect, by using the inside of the bulwark as a container, it is easy to secure the volume of the container.

According to the third aspect of the present invention, in addition to the first aspect, the storage compartment is formed at the rear of the foot step so as to connect the seat table and the bulwark, so that the storage compartment can also be used as a buoyancy space to further improve the hull. The inclination is suppressed, and the inspection opening is easily located above the waterline.

According to the fourth aspect of the present invention, when re-boarding from underwater on the side of the hull, the board can be easily boarded without slipping due to the footrest on the upper surface of the bulwark.

According to the fifth aspect of the present invention, since the inspection opening is located substantially above the waterline at all the inclination angles in which the hull is inclined, the inspection opening can be more reliably provided with a simple structure even when the hull is inclined. Water can be prevented from entering the hull.

[Brief description of the drawings]

FIG. 1 is a side view of a water jet propulsion boat in which a storage section is broken.

FIG. 2 is a plan view of the water jet propulsion boat.

FIG. 3 is a side view in which an inspection opening of the water jet propulsion boat is broken.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a cross-sectional view showing a state in which the hull is tilted by 90 degrees.

FIG. 6 is a diagram showing a state in which the inspection opening is located substantially above the waterline at all inclination angles when the hull is inclined.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water jet propulsion boat 2 Hull 3 Hull 4 Deck 4c Seat table upper surface 4d Inspection opening 4e Seat table 9 Engine 50 Bulwark 90 Body of engine 9 L Waterline K Buoyancy space

Claims (5)

[Claims] A hull in which a hull and a deck are connected in a watertight manner, a seat is arranged on a seat table of the deck, a foot step is formed on both sides of the seat table, and a deck outside the foot step is formed. In a small boat having an engine mounted in the hull below the seat, the inspection opening having a size large enough to allow the main body of the engine to pass is provided on a small boat having an engine mounted in the hull below the seat. Approximately the entirety of the inspection opening is 90
A small boat, wherein a buoyancy space is formed in the bulwark so as to be located above a waterline in a state of being inclined at an angle. 2. A small boat according to claim 1, wherein a compartment is formed in said bulwark. 3. The small boat according to claim 1, wherein a storage compartment is formed behind the foot steps formed on the decks on both sides of the seat so as to connect the seat base and the bulwark. 4. A small boat according to any one of claims 1 to 3, wherein a footrest is formed on both sides of said seat with the bulwark upper surface substantially horizontal. 5. The small boat according to any one of claims 1 to 4, wherein the inspection opening is located substantially above the waterline at all the inclination angles in which the hull is inclined.