JP3363114B2 - Water jet propulsion boat - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water jet propulsion boat in which an occupant operates a steering wheel across a seat. 2. Description of the Related Art Conventionally, an operation handle is provided at a front part of a hull,
There has been proposed a small jet propulsion boat having a structure in which a seat is provided behind the seat. [0003] In such a conventional small hull, there is a demand that an occupant in the water behind the hull can easily board the hull from underwater. The present invention has been made in order to satisfy such a demand, and has as its object to provide a water jet propulsion boat that can easily board from the water behind a hull. It is. According to the present invention, a hull is formed by joining a hull member and a deck member to each other at a peripheral edge, and an operation handle is provided at a front portion of the hull. A seat seat extending in the front-rear direction is provided on the rear side of the operation handle at substantially the center of the hull in the width direction, and a rear foot step is formed on the rear side of the seat.
In the seat, a bottom plate is fixed to a seat receiving member fixed to a seat support base, and the seat receiving member extends rearward and a rear lower edge extends rearward as viewed from the side. It is inclined obliquely upward, and a recessed portion is formed in a portion surrounded by the rear portion of the seat receiving member and the rear portion of the seat support when viewed from the side, and the recessed portion is open left and right outward. is there. In the above configuration, when the occupant gets on the hull from underwater, the occupant goes up on the rear foot step from the stern end. At this time, the seat receiving member extends rearward and the lower edge of the rear portion is extended. When viewed from the side, it is inclined obliquely upward toward the rear, and a recessed portion is formed at a portion surrounded by the rear portion of the seat receiving member and the rear portion of the seat support when viewed from the side. Since it is open to the outside, this recess provides a wide space for boarding at the rear of the hull, so when an occupant in the water behind the hull gets on board from underwater, It can be done easily. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
1 and a deck member 12 are joined to each other at a peripheral portion to form a hull 1, and an engine room 10
The engine 9, the fuel tank 91 and the water lock 92 are arranged. The engine 9 is mounted on the hull member 11 by a mount member 96 as shown in FIG. 5, and the hull member 11 has a large rising wall 110 from the bottom of the hull as shown in FIGS. It is formed to be inclined, so that the width between the chines 112 on both sides is reduced. That is, conventionally, as shown by the phantom line, the rising wall 111 from the ship bottom rises almost vertically, so that the width between the chines 113 is wide. However, the width between the chines 112 is greatly increased by inclining the rising wall 110. To make the hull 1 easier to tilt. At the stern, as shown in FIGS. 1 and 7, a jet unit 8 is arranged in a recess 88, and a rotational force is transmitted through an impeller shaft 90 connected to the engine 9, so that the jet When the impeller 89 rotates in the flow path 81 of the unit 8, the water is sucked from the water inlet 80 opened at the bottom of the hull, and the water is injected in a predetermined direction from the water outlet 82 at the stern to perform propulsion and turning. I try to make it. On the other hand, a hatch cover 5 is mounted on the upper part of the engine room 10, and an upper cover 6 is further mounted on the upper part. An air intake chamber 50 surrounded by a partition wall 52 is provided on the back side of the hatch cover 5. An air discharge chamber 51 is formed on the front side and is surrounded by a partition wall 54 on the rear side. As shown in FIGS. 1 and 4, the peripheral edge of the hatch cover 5 is placed via a packing 59 on an edge 121 formed at the peripheral edge of the opening of the deck member 12. . A vent 53 is formed in the upper part of the air intake chamber 50, and a vent hole 55 is formed in the lower part. A drain hole 55 is formed in the upper part of the air discharge chamber 51. A drain hole 56 which opens laterally is formed in the lower part. An air intake duct 93 is attached to the partition wall 52, and an air discharge duct 94 is attached to the partition wall 54. The reason why the air intake chamber 50 and the air exhaust chamber 51 are separately provided is that air is supplied into the engine room 10 through the air intake duct 93 and air is supplied from a location away from the supply section. This is because it is preferable in terms of arrangement that the two chambers are separately formed in order to discharge the air by the discharge duct 94. A handle shaft 73 is mounted through the upper wall 58 of the hatch cover 5 and an operation handle arm 72 at the upper end thereof extends upward through a slot 61 on the side of the upper cover 6. An operation handle 7 is formed at the end. Since the operation handle arm 72 is moved in the front-rear direction by the operation of the operation handle 7, the elongated hole 61 is formed to a length that can be moved. The handle shaft 7
The lower end of 3 is rotatably supported by the partition wall 52. A hinge (not shown) is provided at the front end of the hatch cover 5. When the hatch cover 5 is opened centering on the hinge, the upper cover 6, the operating handle 7, the operating handle arm 72, and the handle shaft 73 are also opened. It moves together with the hatch cover 5. At the rear side of the operation handle 7, a seat 4 extending in the front-rear direction is provided substantially at the center of the hull in the width direction. Then, a side foot step 14 described later.
The height of the seat 4 is set so as to be higher than the height of the knee of the occupant who puts his feet on the front end of the seat, and as shown in FIG. A knee pad 40 is formed between the seat 4 and the side foot step 14 at the lower position. The knee pad 40 may have cushioning properties like the seat 4, or may be formed by simply covering a hull member with the outer skin of the seat 4. Instead of a part of the seat as shown in the figure, an appropriate cover or deck member may be used. As shown in FIGS. 1 to 3, a side foot step 14 on which two occupants 70 and 71 are placed on both sides of the seat 4 is formed. Is formed with a rear foot step 16 extending over substantially the entire width in the width direction of the hull 1. The rear foot step 16 is set higher than the side foot steps 14, and is connected by a foot step (inclined surface) 15 which is inclined upward and backward. So that you can step on it. At the front side of the side foot step 14, there is formed an inclined surface 17 which is continuous with the front deck.
As shown in FIG. 7 and FIG. 7, the side foot step 14, the inclined surface 15, and the rear foot step 16 include
Up to the top 9, a rubber sheet 140 for slip prevention is stuck. As shown in FIG. 6, the operation handle 7
On the rear side, the deck member is joined to the hull member 11 on both sides to form a gunnel 19, the inside of which is recessed to form a side foot step 14, and the inside of which is raised and seated. A support 2 is formed. A seat receiving member 3 is placed on the seat support 2, and is detachably fixed on both sides by locking members 31. The bottom plate 41 of the seat 4 is fixed to the seat receiving member 3 by bolts 42. A battery housing 33 fixed to the top of the seat support 2 by bolts 35 at the upper end is provided inside the seat support 2, and the battery 32 is housed in the battery housing 33. On the upper side, a concave portion 38 which is recessed upward into the sheet receiving member 3 is formed, and a fire extinguisher 34 is inserted into the concave portion 38 and fixed with a rubber band 36. As shown in FIGS. 1 and 2, the seat receiving member 3 located below the rear end of the seat 4 is inclined forward and downward, and the seat support 2 extends rearward and downward at the lower end. Is connected, whereby the lower part of the rear end of the seat 4 is formed so as to be recessed forward in a side view,
The front end 24 a of the recess 24 is located forward of the rear end of the seat 4. Conventionally, a seat support base extending rearward and downward from the rear end of the seat 4 is formed, so that the space for the rear foot step on the rear side is very limited. As in the embodiment, the seat foot member 3 is inclined forward and downward, and the lower end thereof is formed by connecting the seat support 2 extending rearward and downward, thereby forming the rear foot step 16 having a sufficiently large space. can do. On both sides of the lower portion of the seat support 2, grips 20 are provided for the occupant to grip when boarding from underwater, and a compartment 21 is formed in the seat support 2 between the handles 20. I have. At the rear end of the sheet receiving member 3,
Exhaust port 39 for discharging exhaust from air exhaust chamber 51
Are formed. In the above configuration, when the occupant gets on the hull 1 from underwater, the occupant grabs the handle 20 from the stern end and goes up on the rear foot step 16. At this time, the rear foot step 16 is wide and the seat is wide. Since the lower portion of the rear end of the seat 4 is recessed forward in a side view, a wide space for boarding is secured at the rear of the hull 1 by the recess 24, so that the hull 1 When an occupant in the water behind is boarding from underwater, the embarkation can be easily performed. Further, since the height of the seat 4 is set higher than the knee of the occupant 70 who has put his foot on the side foot step 14, the front occupant 70 and the rear occupant 7
The center of gravity of the entire hull 1 is at a high position in a state where the hull 1 is straddled by the seat 4, so that the hull 1 can be easily inclined when the hull 1 is turned, and thus the turning performance is improved. Further, since the knee pad 40 is formed on the seat, there is an advantage that the posture is stabilized. Further, as shown by the imaginary line in FIG. 2, when the front occupant 70 rises and steps on the inclined surface 15, and the rear occupant 71 stands on the rear foot step 16, the occupant 7
0 means that the forward leaning posture is stable, and the occupant 71 can freely move on the rear foot step 16 in a wide space to change the posture, and therefore, the balance of the hull 1 can be easily adjusted. In addition, the turning property can be further improved. Further, at the time of this turning, as shown in FIGS. 4 and 5, by forming the space between the chines 112 narrow, it becomes easy to tilt the hull 1. And if it inclines more than a certain degree, the gunnel 19 that protrudes greatly to the side
Will regulate any further tilt. Air is taken in from the vent 53 by the hull 1 traveling, and is supplied into the engine room 10 through the air intake duct 93, while air in the engine room 10 is discharged from the air discharge duct 94. This air passes between the seat 4 and the seat receiving member 3 through the air vent hole 57 of the air discharge chamber 51 and the stern exhaust port 39.
Is discharged from As described above, according to the present invention, when the occupant gets on the hull from underwater, the occupant goes up on the rear footstep from the stern end. It is extended toward the rear, and the rear lower edge is inclined obliquely upward as it goes backward as seen from the side,
When viewed from the side, a recessed portion is formed in a portion surrounded by the rear portion of the seat receiving member and the rear portion of the seat support, and the recessed portion is opened to the left and right outside. Since a large space for boarding is secured at the rear of the body, the occupant in the water behind the hull can easily board when boarding from underwater.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway longitudinal sectional view of a water jet propulsion boat according to the present invention. FIG. 2 is a side view of FIG. FIG. 3 is a plan view of FIG. 1; FIG. 4 is a sectional view taken along line AA of FIG. FIG. 5 is a sectional view taken along line BB of FIG. 1; FIG. 6 is a sectional view taken along line CC of FIG. 1; FIG. 7 is a sectional view taken along line DD of FIG. 1; [Description of Signs] 1 Hull 2 Seat support 3 Seat receiving member 4 Seat seat 7 Operating handle 8 Jet unit 9 Engine 10 Engine room 11 Hull member 12 Deck member 14 Side foot step 16 Rear foot step 20 Handle 24 Recessed part 24a front end

Claims (1)

(57) [Claim 1] A hull member and a deck member are joined to each other at a peripheral portion to form a hull, and an operation handle is provided at a front portion of the hull. A seat seat extending in the front-rear direction is provided at the rear side of the handle at a substantially central portion in the width direction of the hull, and a rear foot step is formed at the rear side of the seat, and the seat is provided with a seat support. the bottom plate is fixed to the sheet receiving member fixed to the base, the sheet receiving member is extended toward the rear Rutotomoni
Rear lower edge is obliquely upward as it goes rearward when viewed from the side
And a recessed portion is formed at a portion surrounded by the rear portion of the seat receiving member and the rear portion of the seat support when viewed from the side, and the recessed portion is open to the left and right outside. Water jet propulsion boat.