JPH03266792A - Small lifeboat - Google Patents

Abstract

PURPOSE:To prevent a speaker from being wetted and visibility from being blocked by providing the boat stated in the title of small jet propulsion type with a seat and a steering wheel on the center line of the body of the boat, and forming decks in a single plane on the front and both sides of the seat each of which decks is equipped with bulwarks and open to the stern side, and installing the speaker at the center portion of the steering wheel. CONSTITUTION:A seat stand 44 and steering wheel stand 61 are protrusively formed on the center line of the body of a boat and foot decks 32 are formed on both sides of the seat stand 44 and bulwarks 8 are formed outside the decks 32. An upper deck 33 is formed on the front side of the seat stand 44 and both decks 32, 33 are formed into a single continuous plane and also the stern side of each deck 32, 33 is opened to the rear side. A steering wheel 60a extending in the direction of the width of the boat is projected from the steering wheel stand 61 to form a grip portion 62. A speaker 7 is attached to the center portion of the steering wheel 60a. By this constitution the speaker is prevented from being wetted and blocking of visibility for operating the boat is prevented and also stability and maneuverability inside the boat are both enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a rescue boat consisting of a small jet propulsion boat that sails on the sea with one person or two or three people on board.

[Conventional technology]

2. Description of the Related Art Conventionally, small boats with engines such as small jet propulsion boats that glide on water have been widely used. This propulsion boat can be used as a rescue boat because it glides on the water at high speed and has good maneuverability such as sudden starts and sharp turns.

[Problem to be solved by the invention]

When using the above-mentioned small jet propulsion boat as a rescue boat, it is necessary to install a speaker. On the other hand, small jet propulsion boats are prone to being covered by waves and tilting significantly, so it is necessary to have a speaker that does not get wet with water and that does not obstruct the driver's view. The hull should be as stable as possible.
However, it is desirable to be able to move easily within the ship for rescue operations.

Furthermore, for rescue purposes, it is preferable to provide means for allowing a person to easily board the boat from the water.

This invention was made in order to solve these conventional problems, and the speaker is not easily wetted by water, does not obstruct the driver's view, and the hull is stable and there is no space inside the hull. The purpose of this project is to provide a small rescue boat that is easy to move.

[Means to solve the problem]

This invention relates to a small jet propulsion boat in which a deck member and a hull member, each integrally molded from FRP, are joined to each other at their peripheral edges, and the deck member has a bulwark formed on its peripheral edge except for the stern end. At the same time, a seat and a stand for the operating handle are formed protruding from the centerline of the hull, and on both sides and the front side, a deck of a substantially single plane is formed in succession with the stern end open, and the operating handle is located at the width of the ship. Grips are formed at both ends of an operating handle rod that extends in the direction, and a speaker is installed in the center of the operating handle rod.

Further, it is preferable that the operating handle rod has a recessed center portion such that the grip portions at both end portions protrude upward, and a speaker is attached to the center portion via a support member.

Additionally, as a means for people to easily board the boat from the water, a rudder step is provided at the stern of the upper deck, extending downward from the stern end and having its lower end submerged in the water. is rotatably attached to the upper deck so that its front end rotates around the horizontal axis of rotation so that the lower end of the ladder step is located above the upper deck, and the lower end is submerged in water. and a raised state located above the upper deck, and the biasing means is biased to maintain the raised state located above the upper deck, and in the lowered state, is pushed up by water pressure due to the navigation of the ship and transferred to the raised state. It is preferable to adopt a configuration in which

[Effect]

In the above configuration, since the operating handle, the speaker, etc. are installed on the hull centerline, the speaker is less likely to be exposed to water, it is convenient to operate the speaker, and the hull has excellent stability. In addition, since the front and both sides of the upper deck are continuous and formed into a substantially single plane, and the stern end of the deck is open, water launched onto the deck can be quickly discharged from the stern end. There is no accumulation inside the ship, and it is very easy for people to move around the ship. Further, in a configuration in which a boarding means is adopted at the stern, a person on the water can be easily boarded by moving the rudder step in and out, and the operation to put in and take out the boat can also be carried out quickly.

(Example) In FIGS. 1 and 2, a hull 1 is constructed by joining a hull member and a deck member integrally molded from FRP to each other at their peripheral edges. It is formed into a closed space so that the enclosed area becomes the drainage volume.

The hull members include a bottom plate, a side plate 22, and a stern plate 24,
A rising portion 31 is formed on the peripheral edge of the deck member excluding the stern end, and the upper end thereof is folded back and overlapped with the upper end portion of the ship side plate 22 and joined.

A space is formed between the rising portion 31 and the ship side plate 22 to form a bulwark 8, and this bulwark 8
An opening 12 is formed at the rear end of the bulwark 8 to form an elongated storage section in which a claw rod 11 is stored.

Further, a hook 13 is attached to the side surface of the bulwark 8 on the inside of the ship, and the claw rod 11 is held along the bulwark 8 by this hook 13.

Further, the deck member is formed with a seat base 44 and an operation handle base 61 protruding from the centerline of the hull, and on both sides of the deck member, a foot deck (upper deck) 3 is provided between the seat base 44 and the bulwark 8.
2 is formed, and an upper deck 3 is also formed on the front side of the seat base 44.
3 is formed, and both upper decks 32 and 33 are formed in substantially a single plane continuously with each other, and the stern end of this upper deck 32 is formed to be open rearward. Also, the seat stand 44
A seat 50 is formed at the rear of the top, and a seat 51 is formed at the front.

As shown in FIGS. 3 and 4, a steering shaft 64 is attached to the inside of the operating handle base 61 by a rib 61a, and the upper end of this operating shaft 64 is connected to the operating handle base 61.
1, and a bearing 61c is externally fitted into this penetrating portion and is held rotatably around the axis. An operating handle rod 60a extending in the width direction of the ship is attached to the upper end of the steering shaft 64, and both ends thereof protrude upward to form a grip portion 62 to form an operating handle 60. A support member 63 is attached to the center of the operating handle rod 60a with a clamp 65, and a bolt 7 is mounted on this support member 63.
A speaker 7 is attached by 1.

An amplifier 9 is installed on the part of the operation handle base 61 facing the driver's seat.
An amplifier storage box 91a storing the amplifier 9 is provided, or a storage box 91b storing the amplifier 9 is attached to one side, and a seat base is installed on the other side as shown in FIGS. 5 and 6. A lifebuoy 93 is removably attached to the side of 44 by a band 94. 92 is a microphone.

At the stern part of the upper deck 32, a pair of mounting members 5 are arranged parallel to each other in the length direction of the hull 1, and the front end of the member 5 has a horizontal rotation center axis in the width direction of the ship. 30
is provided, and a ladder step 2 is attached around this rotation center axis 30 as described later.

In addition, a red rotating light 6 is placed on the hull centerline on the bow deck 66.
is installed. The red revolving light 6 is attached to the lid 67 with bolts 6d as shown in FIG. I try to tighten it to 67.

This lid 67 can be opened and closed around a hinge 67c at one end, and is secured at the other end by a lock 67g, forming a watertight storage compartment 69 in the space below.

FIG. 8 and FIG. 9 show an example of the structure for mounting a speaker (hand microphone) 7a with a microphone as a speaker. A support shaft 70 is removably inserted and removably tightened with a rubber band 73.

In this configuration, if necessary, remove the band 73 and pull out the speaker 7a, hold the support shaft 70 with your hand, and then remove the speaker 7a.
can be used.

As shown in FIG. 1, FIG. 2, FIG. 10, and FIG. It consists of a connecting rod 21 that connects both sides of the main member 20 with each other, and arms 3 that extend forward from both sides of the main member 20. In the normal installation state, the lower end of the main member 2o extends downward from the stern end and is submerged below the water surface 9o. is configured to do so.

For attachment on one side, a rib 54 is provided on the upper front side of the member 5, and a gas spring (biasing means) 4 is rotatably attached to this rib 54 via a horizontal axis 41.
The other end of the gas spring 4 is connected to the proximal end of the arm 3 by a shaft 42, so that an extension force is always applied to the gas spring 4.

When the ladder step 2 is in use, the lower end of the main member 2° is submerged below the water surface 9o as shown by the solid line in Figure 10, and when not in use it is located above the upper deck 32 as shown by the imaginary line. It is configured to be rotatable. It is biased by the gas spring 4 so that both the descending state and the ascending state are maintained. In the lowered state, the arm 3 comes into contact with a stopper 55 made of rubber or the like attached near the rear end of the member 5 to prevent the ladder step 2 from lowering any further.

In addition, in the ascending state, the gas spring 4 is fully extended, thereby preventing the rudder step 2 from rotating any further forward, and in this state, the center of gravity of the rudder step 2
is from the rotation center axis 30! Since it is located at the front, a forward rotational force is applied to reliably prevent it from returning to the lowered state with the pressing force of the gas spring 4.

An engine room (not shown) is formed below the operating handle base 61 and the seat base 44, and an engine, a fuel tank, etc. are arranged in this engine room.
This engine rotates the propeller, sucks water from the water suction port on the bottom of the ship, passes it through the flow path, and injects the water in a predetermined direction rearward from the nozzle 38 that swings in a horizontal plane at the stern, which generates turning force and It is designed to generate propulsion.

In the above configuration, waves are launched from the water surface onto the upper deck 32.33 as the propulsion boat slides and turns, but since the upper deck 32.33 is continuously exposed to rain, the launched water is washed up onto the upper deck 32.33. It is smoothly discharged from the rear end to the stern end and does not accumulate inside the ship. Furthermore, since the speaker 7.7a is installed at the operating handle 60 on the centerline of the hull, there is little risk of it getting wet with water. Furthermore, although a large heeling moment acts on the hull 1 when making a sudden turn, the above configuration has good stability because the controls 60, seats 50, etc. are located on the hull centerline. Since the bulwark 8 has a large buoyancy space, this also increases the restoring force and provides excellent stability.

Furthermore, since the speaker 7.7a is installed in the center of the operating knob 60, the speaker 7.7a is installed while the boat 1 is running.
When the speaker 7a is used, the speaker 7.7a always faces in the direction in which the operating handle is operated, so that the speaker 7a can perform its function well.

Furthermore, the speaker 7.7a can be operated by holding the operating handle 60 with one hand, and the speaker 7.7a can be installed using the recessed space between the grip portions 62 of the operating handle 60. Because of this, it does not obstruct the driver's view.

Further, when the hull 1 is in a running state, the rudder step 2 is kept in a raised state as shown by the imaginary line in FIG.

Also, when the hull 1 is stopped and a person enters or exits the water,
The ladder step 2 is brought down as shown by the solid line in FIG.
Step 1 to get on and off. The load at this time is supported by the rotation center shaft 30 and the stopper 55.

When the hull 1 sails from this state, the water pressure caused by the water flow applies a clockwise rotational force to the rudder step 2 as shown in FIG. The state shown by the line will be reached.

The reason why the ladder step 2 is maintained in the lowered and raised states by the gas spring 4 is based on the following principle. That is, the movement locus of the shaft 42 provided in the ladder step 2 is a circular arc locus 3a centered on the rotation center axis 30, and the movement locus of the tip of the gas spring 4 in the most extended state (the position of the shaft 42) is axis 4
This is a circular arc locus 4a centered at 1. The distance between these two loci 3a and 4a is greatest on the neutral line M that connects their centers of curvature (rotation center axis 30 and axis 41), and gradually decreases in any direction from there. In other words, the gas spring 4 is most compressed when it is located on the neutral line M, and no matter which side it rotates from above the neutral line M, due to the expansion force of the gas spring 4, it is compressed below the neutral line M in FIG. A counterclockwise rotational force is applied to the ladder step 2, and a clockwise rotational force is applied to the upper side.

Therefore, the extension force of the gas spring 4 biases the ladder step 2 downward (counterclockwise) in the lowered state, and applies a forward rotational force in the raised state. In the descending state, it is stopped by a stopper 55,
In the ascending state, the gas spring 4 is fully expanded to stop further rotation, and each state is maintained.

In addition, when water flow pressure is applied to the lower end of the rudder step 2 due to the hull 1 sailing in the descending state, the rudder step 2 resists the force of the gas spring 4 and moves toward the rotation center shaft 30.
The rudder step 2 rotates clockwise, and the rotational force decreases as the lower end of the ladder step 2 rises. However, when the gas spring 4 passes over the neutral line M, the force of the gas spring 4 causes it to rotate clockwise in FIG. Rotational force begins to act on it, resulting in the rising state shown in the imaginary line.

In the above embodiment, the ladder step 2 may be moved from the lowered state to the raised state by manual operation.

In this case, it is sufficient to hold the vicinity of the upper end of the main member 20 by hand and rotate it until it passes through the neutral line M, and then the force of the biasing means 4 automatically raises the main member 20. Also, when moving from the ascending state to the descending state, it is only necessary to rotate it by hand until it passes through the neutral line M. Note that various other known means can be employed as the ladder step.

Furthermore, with the configuration of the above embodiment, the rudder step can be stored with one touch after use, and even if the rudder step is forgotten to be stored, the rudder step can be rotated by the pressure of the water flow as the ship moves, and the urging means can be used to rotate the rudder step. Since the rudder step is automatically retracted, there is no problem even if the boat is sailed with the rudder step forgotten.

〔Effect of the invention〕

As explained above, according to the present invention, since the operation handle, the speaker, etc. are installed on the hull centerline, the speaker is less likely to be exposed to water, it is convenient to operate the speaker, and the stability of the hull is improved. is also excellent. In addition, since the front and both sides of the upper deck are continuous and formed into a substantially single plane, and the stern end of the deck is open, water launched onto the deck can be quickly discharged from the stern end. This configuration is convenient for rescue operations, as there is no accumulation of people inside the ship, and it is very easy for people to move around inside the ship. Furthermore, in a configuration that uses boarding means at the stern,
By putting in and taking out the rudder step, people on the water can be easily boarded and taken out and put in and taken out quickly.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the entire rescue boat showing an embodiment of the present invention;
Figure 2 is a plan view, Figure 3 is a front view of the operating handle, Figure 4 is a vertical cross-sectional side view, Figure 5 is a front view of the lifebuoy attachment section, and Figure 6 is a partial cross-sectional plane. 7 is a partial vertical sectional side view of the bow section, FIG. 8 is a partial sectional front view showing another example of the operating handle section, FIG. 9 is a vertical sectional side view thereof, and FIG. 10 is a stern section thereof. FIG. 11 is a partially cutaway front view of the ladder step device in the raised state. DESCRIPTION OF SYMBOLS 1...Hull, 2...Rudder step, 4...Gas spring (biasing means), 5...Mounting member, 6...
・Red revolving light, 7.7a...Speaker, 8...Bulwark, 32.33...Upper deck, 44...Seat base, 50°51...Seat, 60...Operation handle,
62...Grip portion, 63...Support member, 90...Water surface.

Claims (1)

[Claims] 1. A small jet propulsion boat consisting of a deck member and a hull member integrally molded from FRP and joined to each other at their peripheral edges, the deck member having a peripheral edge excluding the stern end. A bulwark is formed, and a seat and a stand for an operating handle are formed protruding from the center line of the hull, and on both sides and the front side of the bulwark, a substantially single-plane deck is formed continuously with the stern end open, and the above-mentioned operation is carried out. The small rescue boat is characterized in that the handle is formed by grips formed at both ends of an operating handle rod extending in the width direction of the ship, and a speaker is installed in the center of the operating handle rod. 2. A claim characterized in that the operating handle rod has a recessed center portion such that the grip portions at both ends protrude upward, and a speaker is attached to the center portion via a support member. Small rescue boat described in item 1. 3. The stern part of the upper deck is provided with a rudder step that extends downward from the stern end and whose lower end is submerged in the water, and the front end of this rudder step rotates around a horizontal axis of rotation to create a rudder. The step is rotatably attached to the upper deck so that the lower end thereof is located above the upper deck, and maintains a lowered state in which the lower end is submerged in water and a raised state in which it is located above the upper deck, respectively. 3. A biasing means according to claim 1 or 2, further comprising a biasing means configured to be biased and to be pushed up by receiving water pressure due to the navigation of the ship in the lowered state and to be moved to the raised state. Small rescue boat.