JP2996993B2 - Small boat - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an engine-driven small boat suitably used for leisure or the like.

(Prior Art) U.S. Pat. No. 3,426,724 and U.S. Pat. No. 3,623,447 describe techniques which are useful in designing an engine-driven small boat suitably used for leisure or the like as the object of the present invention. ing.

Each of these publications has an engine inside the hull and is equipped with propulsion means driven by this engine, for example, a jet pump having a jet nozzle at the stern. A configuration technique is described which is arranged so as to avoid interference with the hull and thereby secures a space around the cockpit and the operator's feet, that is, a leg space at a suitable position on the hull.

This technique is described in more detail in U.S. Pat.
No. 426,724 describes a technique in which the engine is positioned at the center of the ship in the left-right direction and slightly rearward in the front-rear direction, and the cockpit is located above the engine room. The technology described in 3,623,447 secures an engine room near the bow of the ship, provides a flat deck behind it, secures the pilot's leg space in this part, and from the bow side above the engine room And a steering device that extends to the rear.

(Problems to be Solved by the Invention) However, in the latter technology, the pilot is mainly designed to operate the boat while balancing the ship in a standing position, and the structure in which the pilot sits in the cockpit and operates the boat. It is not.

On the other hand, in the former technology, the cockpit extends toward the front-rear direction of the center, which is not the left or right of the hull,
For this reason, there is a disadvantage in that if the length of the hull is reduced to prevent the hull from becoming too long, the pilot's leg space is limited to the left and right sides of the cockpit. Particularly in recent years, a small boat equipped with tandem seats has been desired for leisure or the like so that a plurality of passengers can board the boat and the hull does not become long. Has the disadvantage that the leg space is also limited to the left and right sides of the cockpit.

In view of the above circumstances, the present invention has a short hull length, a compact hull, and a pilot seat that allows a pilot to sit and operate the boat, and a space for the pilot's legs is secured in front of the pilot seat. An object of the present invention is to provide a small boat in which a pilot can maneuver slowly.

Another object of the present invention is to provide a driver's seat and a pilot in front of the cockpit, even if the structure is such that a plurality of passengers can be boarded, as in the case of a single passenger, while the hull is short and compact. It is an object of the present invention to provide a small boat in which not only the leg space is secured, but also the passenger seat and the leg space of the passenger in front of the passenger seat.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an engine room formed from a center of a hull of a small boat equipped with an engine, which is deviated from a floor deck to one of right and left sides near a bow to rise from a floor deck. And an engine is housed therein, a steering device is provided on the other side of the engine room, and a cockpit is provided behind the steering device, and the other side of the engine room in front of the cockpit and adjacent to the engine room. And a space for a pilot's leg is provided.

(Operation) According to the configuration of the present invention, the engine room is formed so as to rise from the floor deck so as to be deviated from the center of the hull to one of the left and right sides near the bow, so that the engine room and the other side are provided. The steering device provided, the cockpit provided behind the steering device, and the pilot's leg space provided in front of the steering device are spatially offset from each other.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a schematic plan view showing the interior of a small boat according to the present invention, and FIG.
FIG. 3 is a central longitudinal sectional view of FIG. 1, and FIG.
FIG. 3 (b) is a cross-sectional view taken along line A of FIG.
FIG. 4A is a sectional view corresponding to FIG. 1A, FIG. 4 is a sectional view taken along line BB of FIG. 1, FIG. 5 is a perspective view of a partially modified example of the small boat according to the present invention, and FIG. FIG. 2 shows a plan view of the small boat (an example view similar to FIGS. 1 to 4).

The propulsion mechanism of this small boat basically includes an engine 2, a fuel tank 3, a pump housing 4, a propulsion shaft 5, and an exhaust system 6 disposed inside the hull 1 as shown in FIGS. It is composed of

This propulsion mechanism is a water jet propulsion mechanism and propells the hull 1 as follows.

That is, fuel is supplied from the fuel tank 3 into the engine 2 and burned, whereby the piston 2f (see FIG. 3 (a)) moves forward and backward, and the piston 2f moves forward and backward to the crankshaft 2g (third shaft). (See (a) diagram), the output shaft 2a of the engine 2 is rotated instead of rotating motion. Then, the propulsion shaft 5 connected to the output shaft 2a rotates, and the other end of the propulsion shaft 5 is connected to the impeller 7 inside the pump housing 4 so that seawater or the like sucked from the water inlet 4a of the pump housing 4 can be removed. The water is discharged as a water jet from the nozzle 4b at the stern at the tip of the pump housing 4 by the impeller 7. The hull 1 is propelled by the water jet. On the other hand, the exhaust system 6 includes an exhaust port 2b of the engine 2,
An exhaust pipe 6a on the engine 2 side, a silencer 6b, and an exhaust pipe 6c on the pump housing 4 side, which connect the water inlet 4a of the pump housing 4 to another opening 4c.

The exhaust system 6 exhausts the engine 2 and simultaneously discharges the cooling water after cooling the engine 2 as described below.

That is, the muffler 6b has a structure in which the exhaust water of the engine 2 and the cooling water after cooling flow together, and thus when the exhaust gas of the engine 2 and the cooling water after cooling flow into the muffler 6b together. The pressure inside the silencer 6b is increased, and the exhaust and cooling water inside the silencer 6b are pushed out toward the opening 4c of the pump housing 4 by this pressure, and the exhaust of the engine 2 and the cooling water after cooling are simultaneously discharged. Further, at the same time, the exhaust sound of the engine 2 is absorbed by the cooling water in the silencer 6b,
This exhaust noise is silenced.

In a small boat equipped with such a propulsion mechanism, as shown in FIGS. 1 and 2, in the present invention, an engine 2 is disposed in the hull 1 near the bow.
Is a four-stroke engine. As shown in FIG. 3 (a), a cylinder head 2c is arranged at an upper left side, and a cylinder block 2d is arranged at a substantially lower center, and a cylinder shaft 2e is inclined to incline the entire engine 2. Is disposed on the port side from the center of the hull 1 and is fixed to the bottom 1a with four mounts 2h.

In addition, since the entire engine 2 is disposed on the port side or the starboard side from the center inside the hull 1 in this manner, FIG. 3 (b)
As shown in FIG. 1, the engine 2 is, for example, a two-stroke engine and a horizontal engine in which a cylinder head 2c is upward and a cylinder shaft 2e is substantially vertical, and an axial center is arranged along the center of the hull as shown in FIG. The engine 2 is disposed such that the output shaft 2a is eccentric to the port side and parallel to the output shaft 2a, and the gears of the output shaft 2a of the engine 2 and the propulsion shaft 5 are attached to the engine 2 via an intermediate gear 2i. It is good also as a structure connected so that interlocking is possible.

On the other hand, the fuel tank 3 is disposed near the center of gravity 1g in the center of the hull 1 as shown in FIG. 1, and a recess for passing the propulsion shaft 5 from the engine 2 to the pump housing 4 as shown in FIG. 3a is formed, and is fixed to the ship bottom 1a via support members 8, 8 provided on both left and right sides.

The propulsion shaft 5 is, as shown in FIGS. 1 and 2,
The bearing 9a attached to the recess 3a and the fuel tank 3
Bearing 9b mounted between the pump housing 4 and
The shaft is rotatably supported by a bearing 9c mounted inside the pump housing 4. The propulsion shaft 5 is divided between the bearing 9a and the bearing 9b for assembling or anti-vibration, and the divided portion is detachably connected by a coupling 9d. Note that ball bearings are used in the bearings 9a, 9b, and 9c for supporting the propulsion shaft 5 in order to smoothly rotate the propulsion shaft 5.

On the other hand, a silencer 6b having a bulky size in the exhaust system 6
As shown in FIG. 1, is accommodated in the internal space of the hull 1 between the engine 2 and the port side, and the exhaust pipes 6a and 6b are also arranged on the port side.

As shown in FIG. 3, in the small boat equipped with the propulsion mechanism, the engine 2 and the silencer 6b in the exhaust system 7 near the bow are arranged on the port side from the center inside the hull 1 as shown in FIG. Since the exhaust pipe 6a and the exhaust pipe 6c are also on the port side, a space is formed on the starboard side inside the hull 1 offset from the engine 2 and the exhaust system 7, and this space is used for the steering device, the cockpit and the leg space for the operator. Has been used as.

That is, as shown in FIG. 6, this small boat is raised from the floor deck 10 on the port side in front of the hull 1 to cover the boat.
An engine room 12 is formed, which is covered with an engine room 12. The engine room 2 is accommodated in the engine room 12. The engine room 12 is located on the starboard side of the hull 1 adjacent to the engine room 12, as shown in FIGS. The steering shaft 13a is covered with a steering pod 13b, and a steering device 13 is provided at a substantially center end of the hull 1 with a steering grip 13c exposed. A cockpit 14 is provided behind the steering device 13, and a cockpit 14 is provided. In front of the engine room 12 adjacent to the pilot's leg space 15
Is provided. Conversely, on the port side, behind the engine room 12, the leg space 16 and the passenger seat 17 of the passenger
The cockpit 14 and the passenger seat 17 are arranged in a staggered arrangement.

As shown in FIG. 6, the steering device 13 has a throttle 13d on the right handle of a steering grip 13c, a steering shaft 13a and a steering pod 13b.
Is rotatable in the vertical direction with a tilt pin 13e provided at the forward end of the steering pod 13b as a fulcrum. By moving the steering shaft 13a and the steering pod 13b upward, the rider's riding ability is improved. On the other hand, maneuverability is improved by descending after getting on. Further, the transoms behind the cockpit 14 and the passenger seat 17 are open, so that the rider's and passenger's riding properties are improved.

In addition, the flanges 18 and 18 on both sides are wide on the bow side, so that the wide flanges 18 and 18 have a structure that can be waved.

In the above description, a small two-seater boat with a staggered arrangement in which the pilot's leg space is formed on the forward starboard side of the hull has been described, but the muffler in the engine and exhaust system, the engine side and the pump housing side The two exhaust pipes can be provided on the forward starboard side of the hull, and the pilot's leg space can be formed on the forward port side of the hull. Of course, the present invention can be applied to a small boat other than the water jet propulsion mechanism.

(Effects of the Invention) As is apparent from the above description, according to the present invention, the engine room is formed by standing up from the floor deck so as to be deviated from the center of the hull to one of the left and right sides near the bow, and the engine is formed therein. A steering device is provided on the other side of the engine room, a cockpit is provided behind the steering device, and a pilot's leg space is provided on the other side adjacent to the engine room in front of the cockpit. The pilot seat is provided so that the operator can sit and operate the boat while the hull length is short and compact, and the pilot's leg space is secured in front of the cockpit so that the driver can relax A small boat capable of maneuvering with the boat is provided.

In addition, by providing a passenger seat at the staggered position behind the cockpit, the driver's seat has a short hull length and a compact hull as in the case of a single-seater, although it has a structure that allows multiple people to board. Further, there is provided a small boat in which not only a pilot's leg space is secured in front of a cockpit, but also a passenger seat and a leg space of a tour conductor are secured in front of the passenger seat.

[Brief description of the drawings]

FIG. 1 is a plan view showing a small boat propulsion mechanism according to the present invention;
FIG. 2 is a central longitudinal sectional view of FIG. 1, FIG. 3 (a) is a sectional view taken along line AA of FIG. 1, and FIG. 3 (b) is FIG. 3 (a) of another embodiment of the present invention. FIG. 4 is a sectional view corresponding to FIG.
B sectional view, FIG. 5 is a perspective view of a partially modified example of the small boat according to the present invention, and FIG. 6 is a plan view of the small boat according to the present invention. In the drawings, 1 is a hull, 1a is a ship bottom, 1g is a center of gravity, 2 is an engine, 2a is an output shaft, 2b is an exhaust port, 2c is a cylinder head,
2d is a cylinder block, 2e is a cylinder shaft, 2f is a piston, 2g is a crankshaft, 2h is a mount, 2i is an intermediate gear, 3
Is a fuel tank, 3a is recessed, 4 is a pump housing, 4a is a water inlet, 4b is a nozzle, 4c is an opening, 5 is a propulsion shaft, 6 is an exhaust system, 6a is an exhaust pipe, 6b is a silencer, and 6c is an exhaust pipe. , 7 is an impeller, 8 is a support member, 9a, 9b, 9c is a bearing, 9d is a coupling, 10 is a floor deck, 11 is a cover, 12 is an engine room, 13 is a steering device, 13a is a steering shaft, and 13b is a steering wheel. A pod, 13c is a steering grip, 13d is a throttle, 13e is a tilt pin, 14 is a cockpit, 15 is a pilot's leg space, 16 is a passenger's leg space, 17 is a passenger's seat, and 18 is a flange.

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B63B 29/02 B63B 3/00 B63B 35/73 B63H 21/24

Claims (5)

(57) [Claims] In a small boat equipped with an engine, an engine room is formed by being raised from a floor deck so as to be deviated from the center of the hull toward one of the left and right sides near the bow, and the engine is housed therein. A steering device is provided on the other side of the room, a cockpit is provided behind the steering device, and a leg space for the pilot is provided on the other side of the room adjacent to the engine room in front of the cockpit. Characterized small boat. 2. A small boat according to claim 1, wherein a passenger seat is provided at a staggered position behind the cockpit. 3. The small boat according to claim 1, wherein an output shaft of the engine is disposed along a center of the hull, and a cylinder axis thereof is inclined toward a side of the engine room. . 4. An output shaft of the engine is arranged on the engine room side in parallel with a propulsion shaft arranged along the center of the hull, and the output shaft and the propulsion shaft are connected via interlocking means. The small boat according to any one of claims 1 to 3, characterized in that: 5. A part of the pilot's leg space is located below the steering device, and the steering device is vertically rotatable around its bow end. The small boat according to any one of claims 1 to 4, wherein