JP2930217B2 - Bow structure of small propulsion boat - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a bow structure of a small propulsion boat that is slid on the water surface by one or two or three persons.

[Conventional technology]

2. Description of the Related Art Conventionally, a small propulsion boat that rides on the water surface by one or two or three persons has been used, and this propulsion boat is towed to the fore end of a hull member on the hull center line for towing by another ship. Bracket (Bauai) is attached. That is, as shown in FIG.
A bow-shaped 13 is attached by bolts 14, and the hull is towed by passing a towing rope (not shown) through a hole in the bow-shaped 13.

[Problems to be solved by the invention]

In the bow structure of the small propulsion boat described above, the bow eye 13 is provided so as to protrude from the bow end, so that another boat approaching for rescue can hit the bow eye before colliding with a fender such as a bumper. 13 could collide. In addition, this recommended boat performs various movements such as sudden turning and sudden starting.In particular, when making a spin turn, it becomes a preload and the bow approaches the water surface, and at this time it protrudes to the hull member bow end. As a result, the existing bow-ai 13 receives greater resistance to the water, which impairs the performance characteristic of the small propulsion boat.

The present invention has been made in order to solve such a conventional drawback, and there is provided a bow structure of a small propulsion boat in which a bow eye member does not protrude to the bow end, and thus does not impede athletic performance. It is intended to provide.

[Means for solving the problem]

According to the present invention, in a small propulsion boat, a recess is formed at a bow end of a hull member on a hull center line, and a hull member around the recess is recessed inboard to form a seat portion.
A bow eye member is detachably attached so as to straddle the recess, the surface of the bow eye member and the hull member at the bow end are formed substantially flush, and a towing rope passes between the bow eye member and the recess. Is formed.

[Action]

In the above configuration, since the bow eye member attached across the recess at the bow end of the hull member is arranged so as to be substantially flush with the hull member at the bow end, there is no possibility of collision with another ship, Also, when this part is submerged or receives a wave, it does not receive much resistance due to water or waves.

〔Example〕

In FIG. 1, a hull member 12 constituting a bottom plate and a deck member 11 constituting an upper deck are integrally formed by FRP or the like, and these are joined to each other at a peripheral portion to constitute a hull 1. Behind the center of the hull 1, a seat 2 is formed at the center in the boat width direction, a foot deck (not shown) is formed on both sides, and a bulwark 4 is formed outside the foot deck. The front casing of this seat 2
An operation handle 3 is provided on 30, and the operator places his / her feet on the foot deck across the seat 2 and grips the operation handle 3 to drive.

The engine 6 is installed below the casing 30,
A fuel tank 5 is installed in front of the engine 6, and a jet unit 7 having a water suction port 70 opened at the bottom of the stern is installed at the stern, and a shaft 60 of an impeller 61 rotating in the jet unit 7 is an engine. 6, the hull 1 is propelled and turned by sucking water from a water suction port 70 at the bottom of the ship by the rotation of the impeller 61 and jetting the water in a predetermined backward direction from the deflector 71 at the stern. . Further, a recess 80 is formed at the bow end, and the bow eye member 8 is attached here.

As shown in FIGS. 2 to 4, a concave portion 80 is formed at the bow end of the hull member 12 on the hull center line, and is formed with an outwardly opening concave portion. The flat portions 81 at the upper and lower ends of the bow eye member 8 are fixed by bolts 84 at seats 83 around the concave portion 80. The bow eye member 8 is disposed so that the outer surface thereof is flush with the bow end 12a on the hull center line, and a gap 88 through which a tow rope (not shown) is passed is provided between the bow eye member 8 and the concave portion 80. Is formed.

5 and 6 show another embodiment of the present invention,
A recess 80 similar to the above is formed in the bow portion, and a bar-shaped bow-eye member 85 is disposed in the left-right direction across the recess 80, and flat portions 87 at the left and right ends of the bow-eye member 85 are seated around the recess 80. It is fixed at 86 by bolts 84. The bow eye member 85 is formed so that its outer surface has a horizontal sectional shape and is curved so as to be flush with the bow end outer surface, and a towing rope (not shown) is passed between the bow eye member 85 and the concave portion 80. A gap 88 is formed.

In the above configuration, when another ship approaches during rescue or the like, since the bow eye members 8, 85 do not protrude from the bow end 12a, the bow eye members do not protrude from the fender (not shown).
8,85 do not collide, and therefore
No damage from 85. When the hull 1 makes a spin turn, the bow eye members 8, 85 approach the waterline or become submerged, but also in this case, since the bow eye members 8, 85 do not protrude, There is no resistance. Furthermore, the bow eye member 8,85
Despite the attachment, the bow end 12a has a smooth appearance with no protruding parts and thus has an excellent appearance.

〔The invention's effect〕

As described above, the present invention provides a seat portion by recessing a hull member around a concave portion formed at a bow end of a hull member on the inboard side, and forming a bow portion on the seat portion so as to straddle the concave portion. It is detachably mounted, and the surface of the bow eye member and the hull member at the bow end are formed substantially flush with each other.Because the bow eye member does not protrude from the bow end, there is no danger of collision with another ship etc. Also, it does not create resistance when submerged or subjected to waves, so it does not impede the kinetic performance, and it has excellent appearance because there is no protrusion at the bow end. is there.

[Brief description of the drawings]

FIG. 1 is a side view of an entire hull showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of a hull center line of a bow portion, and FIG.
FIG. 4 is a sectional view taken along the line III-III, FIG. 4 is a front view thereof, FIG. 5 is a diagram corresponding to FIG. 2 showing another embodiment of the present invention, FIG. The figure is a diagram corresponding to FIG. 2 showing a conventional structure. 1 ... hull, 2 ... seat, 3 ... operation handle, 8,85 ...
... Bauai member, 12 ... Hull member, 12a ... Bow end, 80
…… Recess.

Claims (1)

(57) [Claims] In a personal watercraft, a recess is formed at a bow end of a hull member on a hull center line, and a seat is formed by recessing a hull member around the recess into the interior of the boat. A bow eye member is detachably attached so as to straddle the recess, a surface of the bow eye member and a hull member at the bow end are formed substantially flush, and a towing rope is passed between the bow eye member and the recess. The bow structure of a small propulsion boat characterized by having a gap formed therein.