JP2522290Y2 - Small planing boat - Google Patents

Description

TECHNICAL FIELD The present invention relates to a personal watercraft, and more particularly, to a structure for mounting an internal combustion engine on a hull.

BACKGROUND ART In a typical prior art, an internal combustion engine and its related components, such as a carburetor and a muffler, for obtaining propulsion are individually fixed to the bottom of a ship, and an output shaft of the internal combustion engine is mounted on a hull. The rear partition, which is fixedly provided in advance, is inserted so as to pass therethrough, and the input shaft of the pump for jet propulsion is connected to the output shaft through which the rear partition is inserted.

Problems to be Solved by the Invention In such prior art, since the internal combustion engine and its related components are fixed separately to the bottom of the ship, there are disadvantages that productivity is poor, assembly is complicated, and man-hours are large. Moreover, maintenance and inspection are troublesome.

Further, in such prior art, when the output shaft of the internal combustion engine is centered by inserting the rear partition wall fixed to the hull in advance, the position at which the internal combustion engine is mounted on the ship bottom must be adjusted. This is a complicated task.
This also results in poor productivity.

An object of the present invention is to provide a personal watercraft with excellent productivity and easy maintenance and inspection.

Means for Solving the Problems The present invention relates to (a) the hull 30, which has a nozzle 41 for jet propulsion at the stern 40, forms a cabin 33, and has a cutout at the center in the width direction of the hull 30. A deck 31 having a notch 383 formed therein, and a hull 32 connected to the deck 31 and forming an outer peripheral portion of the hull 30, and a mounting portion 5 is provided on both upper sides of the deck 31 near the notch 383.
A hull 30 having a pump recess 381 formed below the ship bottom at a position forward of the nozzle 41 in the advancing direction and formed with 35,536, and a pump recess 381 connected to the nozzle 41; (b) a rotation axis extending along the advancing direction Input shaft with
(C) a propulsion member 382 which is provided at the rear end of the input shaft 366 in the traveling direction and sucks water from the bottom of the boat in the pump recess 381 and jets it from the nozzle 41 to perform jet propulsion; d) an internal combustion engine 56 having an output shaft 365 connected to a forward end of the input shaft 366 through a shaft coupling; and (e) a support member 353, a bottom plate 357, and both side portions of the bottom plate 357. And a pair of support mounting portions 538, 539 formed by rising at the upper portion of the support mounting portions 538, 539.
60, 361, the bottom plate 357 and the support mounting portions 538, 539, and rises rearward in the traveling direction, the input shaft 366 penetrates, and the pump recess 3
Waterproof bulkhead 362 formed ahead of 81 in the direction of travel
And (f) an engine mounting member 370, wherein the internal combustion engine 56 and components 57 and 58 related to the internal combustion engine 56 are fixed, and both sides in the width direction are supported by the support member 353. Mounting part 53
(G) shock absorbing members 354, 355 interposed between the support mounting portions 538, 539 of the support member 353 and the widthwise both sides of the engine mounting member 370; h) The personal watercraft is characterized in that the engine mounting member 370 is removably assembled from the hull 30.

Operation According to the present invention, the support member 3 is provided via the buffer members 354 and 355.
The engine mounting member 370 attached to the 53
And other components 57, 58 such as a carburetor and a silencer related to the internal combustion engine. The support member 353 is provided with a waterproof partition having an insertion hole through which the output shaft 364 of the internal combustion engine is inserted. Accordingly, by attaching the support member 353 to the hull 30, at least the
It will be attached to. Therefore, since the internal combustion engine 56 can be assembled on the support member 353 outside the hull 30, the assembling work is easy. Moreover, at the time of maintenance and inspection, the support member 353 can be removed from the hull 30 and the components 57 and 58 related to the internal combustion engine 56 and other internal combustion engines 50 can be adjusted, so that maintenance work is extremely easy.

As described above, the support member 353 is provided with the waterproof partition 362, and the waterproof partition 362 is attached to the output shaft 364 of the internal combustion engine 56.
, The mounting position of the internal combustion engine 56 on the support member 353 can be adjusted outside of the hull 30, thereby also facilitating assembly work and improving productivity. Can be achieved. Engine mounting member 370
Since there are buffer members 354 and 355 between the support member 353 and the support member 353, it is possible to prevent the vibration of the internal combustion engine from being transmitted to the hull.

FIG. 1 is a perspective view of a personal watercraft according to an embodiment of the present invention. The hull 30 of the personal watercraft includes a deck 31 and a hull 32 formed of, for example, reinforced plastic. A cabin 33 formed by the deck 31 is provided with a driver seat 34 made of urethane foam and leather. The driver's seat 34 is located in the front half of the hull 30 and at the center in the left-right direction. Driver seat
A control rod 35 formed of, for example, an aluminum casting or the like is provided in front of and near the driver's seat 34. The driver's seat 34 is tilted so that the backrest 36 is in an upright state as shown in the figure and is angularly displaced as indicated by an arrow 37 so as to be flush with the driver's seat 34. Can be. The driver's seat 34 is fixed on the cover 39.

Behind the driver's seat 34 is provided a passenger seat 38 on which two passengers can sit.

The hull 30 has a box shape as a whole, and is shorter and wider before and after (left and right in FIG. 1) than this type of conventional personal watercraft, and has a squat shape. A stern 40 is provided with a nozzle 41 for jet propulsion.
The boat can be maneuvered by angularly displacing 41 with the control stick 35 around the vertical axis. In addition, by operating the control stick 35, the thrust can be adjusted by controlling the opening of the throttle valve of the internal combustion engine.

The bottom of the hull, which is the lower part of the hull 32, is a so-called shallow trimaran, so as to improve straightness and make it difficult for skidding.
Grooves 43 and 44 extending in the front and rear direction are formed.

In the deck 31 of the hull 30, handles 45, 46, 47 are provided, and these handles 45, 46, 47 do not protrude outward, so that the outer surface of the hull 30 is substantially smooth. ing.

By providing the driver's seat 34 in the center of the front half of the hull 30, the driver is substantially equidistant from the left and right sides 48, 49.

The control stick 35 is provided in front of the driver's seat 34, and the driver sitting on the driver's seat 34 moves the control stick 35 extending to almost the same height as the upper part of the deck 31 with one hand left and right. It is configured such that it is possible to change the direction of the bow 50 by performing the maneuver with the angular displacement of the boat. Accordingly, the space required for performing the boat maneuvering operation is small.

Depress the backrest part 36 from the standing state like an arrow 37,
By being flush with the driver's seat 34 on the cover 39, the driver can lie down between the driver's seat 34, the backrest 36, and the passenger's seat 38. In addition, a comfortable posture can be obtained, and the backrest 36 does not protrude above the hull 30 during the transportation of the package, which facilitates the transportation of the package.

The upper end of the control stick 35 is slightly higher than, for example, above the driver's seat 34, and is substantially at the same height as the upper part of the deck 31 of the hull 30. This facilitates the packing and transportation of the personal watercraft. Since the storage recesses 402 and 403 are provided in the cabin 33 of the hull 30 in a water-tight manner, the storage recesses 402 and 403 serve as small items necessary for boarding.

FIG. 2 is a sectional view of the hull 30 in the vicinity of the internal combustion engine 56. The mounting part 535,536 is attached to the deck 31 that constitutes the hull 30.
Are formed, and the mounting members 535 and 536 have support members 3
53 is detachably attached by a bolt 533 and a nut 534 fixed to the deck 31. Engine mounting member 370
Above, an internal combustion engine 56 is fixed. The components related to the internal combustion engine 56, such as the carburetor 57 and the silencer 58, are fixed to the engine mounting member 370. The engine mounting member 370 is supported by the support member 35 via the buffer members 354 and 355.
Bolts 53 previously fixed to the support mounting portions 538, 539 of (3)
1, and is fixed to the support member 353 by the nut 532.

FIG. 3 is a simplified perspective view of the hull 30 on which the support member 353 is mounted. This support member 353, the bottom plate 357, support mounting portions 538, 539 formed on both sides thereof, mounting pieces 360, 361 projecting outward from the support mounting portions 538, 539,
It has a waterproof partition wall 362 provided at the rear and connected to the bottom plate 357 and the support attachment portions 538 and 539. The waterproof partition 362 has an insertion hole 363 through which the output shaft of the internal combustion engine 56 (see FIG. 2) is inserted.

FIG. 4 is a left side sectional view showing a part of the hull 30 near the waterproof bulkhead 362. The output shaft 364 of the internal combustion engine 56 is
The output shaft 364 is inserted through an insertion hole 363 formed in the 62, and connected to an input shaft 366 of a pump 365 provided at the rear part of the hull 30 via a shaft coupling (not shown). The pump 365 sucks water from the bottom of the ship and jets it from the nozzle 41, whereby jet propulsion can be performed.

On the engine mounting member 370, as described above, the internal combustion engine 5
6. A vaporizer 57, a silencer 58 (see FIG. 2) and the like are attached. Such assembling work is performed by the engine mounting member 37.
0 can be removed from the hull 30 and performed outside the hull 30. Therefore, the assembling work is easy. In addition, at the time of maintenance and inspection, the engine mounting member 370 can be removed from the hull 30 to adjust the internal combustion engine 56 and its related components 57 and 58 and auxiliary devices of the internal combustion engine (not shown). It is.

As clearly shown in FIG. 2, the deck 31 forms a cabin 33, and the deck 31 has a notch 383 cut out at the center of the hull 30 in the width direction. The hull 32 continues to the deck 31 and forms an outer peripheral portion of the hull 30. Notch 31
Mounting portions 535, 536 are formed on both sides of the upper portion closer to 383.

A pump recess 38 opening below the bottom of the hull 30 at a position ahead of the nozzle 41 in the traveling direction (leftward in FIG. 4).
1 is formed following the nozzle 41. A waterproof partition 362 is formed at a position forward of the pump recess 381 in the traveling direction.

Support members 3 are provided on both sides of the engine mounting member 370 in the width direction.
Above the 53 support mounts 538,539.

Effects As described above, according to the present invention, assembling is easy, man-hours can be reduced, productivity can be improved, and maintenance and inspection are easy. In addition, the centering adjustment operation for inserting the output shaft of the internal combustion engine through the waterproof partition can be performed outside the hull, thereby improving workability and improving productivity.

According to the present invention, the notch 38 is provided at the center of the deck 31 in the width direction.
3 is formed, and the engine mounting member 370 is detachably assembled from the hull 30 together with the internal combustion engine 56 at the position of the notch 383, so that the internal combustion engine 56 does not protrude significantly to the cabin 33.

Further, according to the present invention, the mounting pieces 360 and 361 of the support member 353 are provided.
Is fixed to the upper portions of the attachment portions 535, 536 of the deck 31, and the engine attachment member 370 is attached to the support member 353 via the cushioning members 354, 355.
Transmission of vibration from the internal combustion engine 56 is suppressed.

[Brief description of the drawings]

FIG. 1 is a perspective view of a personal watercraft according to an embodiment of the present invention.
FIG. 3 is a sectional view of the hull 30 in the vicinity of the internal combustion engine 56, FIG. 3 is a simplified perspective view of the hull 30 with the support member 353 mounted thereon, and FIG. FIG. 30 ... Hull, 31 ... Dekki, 32 ... Hull, 33 ... Cabin, 41 ...
Nozzle, 57 ... vaporizer, 56 ... internal combustion engine, 58 ... silencer, 353
… Support members, 354,355… Buffer members, 360,361… Mounting pieces,
357: bottom plate, 358,359 ... side wall, 362: waterproof partition wall, 363 ... insertion hole, 364 ... output shaft, 365 ... pump, 366 ... input shaft, 370 ... engine mounting member, 535, 536, 538, 539 ... mounting part

Claims (1)

(57) [Scope of request for utility model registration] (A) A hull 30 having a nozzle 41 for jet propulsion at a stern 40, a cabin 33 formed therein, and a notch 383 cut out at a widthwise central portion of the hull 30. A deck 31 and a hull connected to the deck 31 and forming an outer peripheral portion of the hull 30
At the upper side near the notch 383 of the deck 31, mounting parts 53
A hull 30 having a pump recess 381 formed below the ship bottom at a position forward of the nozzle 41 at a position forward of the nozzle 41 and connected to the nozzle 41; and (b) a rotation axis extending along the direction of travel. Input shaft with
(C) a propulsion member 382 which is provided at the rear end of the input shaft 366 in the traveling direction and sucks water from the bottom of the boat in the pump recess 381 and jets it from the nozzle 41 to perform jet propulsion; d) an internal combustion engine 56 having an output shaft 365 connected to a forward end of the input shaft 366 through a shaft coupling; and (e) a support member 353, a bottom plate 357, and both side portions of the bottom plate 357. And a pair of support mounting portions 538, 539 formed by rising at the upper portion of the support mounting portions 538, 539.
0,361, and connected to the bottom plate 357 and the support mounting portions 538, 539, rises rearward in the traveling direction, the input shaft 366 penetrates, and the pump recess 381
A support member 353 having a waterproof partition wall 362 formed at a position further forward in the traveling direction, and (f) an engine mounting member 370, wherein the internal combustion engine 56 and components 57 and 58 related to the internal combustion engine 56 are fixed. The both sides in the width direction are the support mounting portions 538, 5 of the support member 353.
(G) cushioning members 354, 355 interposed between the support mounting portions 538, 539 of the support member 353 and the widthwise both sides of the engine mounting member 370; h) A personal watercraft, wherein the engine mounting member 370 is removably assembled from the hull 30.