JPH05310188A - Safety device for small ship - Google Patents

Abstract

PURPOSE:To prevent a diver or the like from being caught in the propeller of a ship by freely rotatably disposing a safety cover in the form of a netted box on the outer periphery of the propeller, and providing on both sides of the cover fins which rotate from the forward and sideward direction. CONSTITUTION:A safety cover 6 in the form of a netted box having an open front face is disposed on the outer periphery of a propeller D in such a manner as to be rotatable about a shaft 3. Fins 8 which open toward the outside of the safety cover 6 are attached to both sides of the front face of the safety cover 6 and are rotatably supported by a hinge 9. When the fings 8 are closed, their sides 8a point in the forward direction, while when the fins 8 are opened their sides point in the sideward direction, i.e., the outward direction. When a ship A is propelled at high speed, the fins 8 are opened by the force of a flow of water and the safety cover 6 is sprung backward by the force of the flow of water applied to the fins 8. When the speed of the ship is reduced, the rate of the flow of water applied to the fins 8 is reduced and the safety cover 6 is hung down about the shaft 3 by its own weight and the fins 8 are closed so that a diver in no danger of being caught therein.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for small ships, and more particularly to a safety device for preventing accidents involving a propeller and protecting the propeller.

[0002]

2. Description of the Related Art In recent years, with the rapid spread of marine sports, sports using small boats such as motor boats,
For example, water skiing and parasail are becoming popular.

In the above-mentioned water skiing and parasail, a rope is extended from the rear of a small boat, the small boat is advanced with the competitor connected to the tip of the rope, and the competitor is moved on the water surface or in the air through the rope. It is what pulls.

The small boat is also generally used as a transportation means for transporting divers who perform scuba diving to a diving spot.

[0005]

As described above, when a small boat is used as a means for towing water skis and parasails, at the end of the competition, the athlete floating on the water surface is pulled up from the water surface to the boat surface, and the bridge is closed. I need to take me home.

Also, during scuba diving, it is necessary to finish the diving, raise the diver floating on the surface of the water onto the ship, and bring it back to the port.

However, in order to pull a competitor or a diver on the surface of the water onto the ship, it is necessary to bring a small boat close to the competitor or the diver.

However, at this time, small boats have shallow water, and naturally the propellers for propulsion equipped on the boat are also
Since it is located in a shallow place under the surface of the water, if a mistake is made in maneuvering when pulling up a competitor or a diver, the propeller comes into contact with the competitor or the diver, which is very dangerous.

Particularly, in the case of a type of small boat equipped with an outboard motor, the propeller greatly projects to the rear of the hull,
Furthermore, competitors and divers on the surface of the water climbed up from behind the ship, and it was extremely dangerous to make a mistake in maneuvering at this point.

However, the conventional small vessels have not taken any safety measures to cope with the above troubles.

[0011]

[Means for Solving the Problems] The front surface is open, and the other portions are in the shape of a box with a mesh or lattice shape, and the inner size is set to a size that can completely cover the propeller mounted on a small boat. The safety cover is placed on the outer circumference of the propeller, the fins are rotatably supported on both sides of the safety cover, and the safety cover is located above the propeller and is rotatable toward the rear of the propeller. A safety device that has a fulcrum for supporting and that makes the rotation angle of the fin from a closed state where the outer side of the fin faces forward to an opened state where it faces directly to the side, It is attached to a ship.

[0012]

As described above, on the outer periphery of the propeller of a small boat,
By arranging a safety device composed of a net-like or lattice-like box, it is possible to prevent a competitor or a diver from being caught in the propeller.

[0013]

1 to 3 show a safety device (1) according to the present invention.
2 shows an example in which the outboard motor (B) attached to the small boat (A) is equipped with.

In the figure, (2) is a bracket fixed to a portion located above the propeller (D) of the housing (C) forming the outer shape of the outboard motor (B), and (3) is A shaft for supporting a safety cover (6) described later, which is rotatably supported above the propeller (D) by a bracket (2).

The bracket (2) includes a first bracket (2a) fixed to the housing (C) of the outboard motor (B) and a second bracket (2) extending rearward from the first bracket (2a). 2b)
The shaft (3) penetrates through the pipe (4) supported by the second bracket (2b), and from the center of the pipe (4), the housing is
The third bracket (5) that contacts the outer circumference of (C) extends.

(6) is a safety cover supported by the shaft (3).

As shown in FIG. 3, the safety cover (6) has a box-shaped box with a front surface and a bottom surface opened and the other portions having a lattice shape, and the inner size thereof is that of the propeller (D). It is sized to completely cover the sides, top, and back.

The support of the safety cover (6) by the shaft (3) is, as shown in FIGS. 1 and 2, an arm portion (upwardly extended from both sides of the front surface of the safety cover (6)). 7) This is done by fixing the tip of (7) to the end of the shaft (3).

Further, fins (8) that open toward the outer peripheral direction of the safety cover (6) are attached to both sides of the front surface of the safety cover (6).

This fin (8) is 90
The fins (8) are supported so that they can be rotated only by ゜, and when the fins (8) are closed, as shown in FIG. 1, the outer side edge (8a) faces forward and the fins (8) are small vessels ( When the fin (8) is opened facing the front of A) and the fin (8) is opened, the outer side edge (8a) of the fin (8) is located outside the safety cover (6) as shown in the broken line of FIG. 3 and FIG. It is turned to the side.

Further, in the center of the upper surface of the safety cover (6),
When the safety cover (6) hangs vertically downward by its own weight around the shaft (3) as a fulcrum, it comes into contact with a part of the housing (C) of the outboard motor (B), and the safety cover (6) goes further forward ( A stopper (10) is provided to prevent the rear surface of the safety cover (6) from coming into contact with the propeller (D) so as to prevent rotation toward the right (in FIG. 1).

A small boat (A) having an outboard motor (B) equipped with a safety device (1) having the above-mentioned structure is moored, and a propeller (D)
When the rotation is stopped, the safety cover (6) hangs down by its own weight until the stopper (10) contacts the housing (C) of the outboard motor (B), and the safety cover (6) is secured to the outer periphery of the propeller (D). cover
(6) is located and the fins (8) are closed.

When the outboard motor (B) is started in this state and the propeller (D) is rotated to advance the small boat (A), the fins (8) are opened by the water flow generated by this forward movement. , The fins (8) project on both sides of the safety cover (6), and the force of the water flow that hits the open fins (8) causes the safety cover (6) to pivot on the shaft (3) as the fulcrum of the outboard motor (B). Try to rotate upwards.

When the ship speed increases above a predetermined value,
The force of the water flow that hits the fins (8) exceeds the dead weight of the safety cover (6), and the safety cover (6) jumps up backward as shown in Fig. 4 to ensure safety when the small vessel (A) is propelled at high speed. cover
Prevent (6) from becoming a resistance.

[0025] From this state, when the boat (A) is brought closer to the athlete or the diver in order to pull the athlete or the diver onto the boat, the fin (8) of the safety cover (6)
Since the flow velocity of the water flow that hits the safety cover (6) rotates downward by its own weight, the safety cover (6) returns to the state of FIG. 1 and the fins (8) also close, so the safety cover (6) is attached to the outer periphery of the propeller (D). 6) and fins (8) come to rest.

Therefore, even if a maneuvering mistake is made at this point,
Since the periphery of the propeller (D) is guarded by the safety cover (6) and the fins (8) in the closed state, there is no concern that competitors, divers, etc. will be caught in the propeller (D).

When the propeller (D) is reversed and the small boat (A) is moved backward when maneuvering to approach competitors, divers, etc., the safety cover (6) is fitted with the safety cover (6). Since the force pressing on the (D) side works and the fin (8) is pushed in the closing direction, the safety cover (6) and the fin (8) in the closed state are still located on the outer periphery of the propeller (D). ,
Be sure to prevent competitors and divers from getting caught in the propeller (D).

In the above embodiment, the safety cover (6) is covered with a propeller (D) in a lattice shape, but this portion may be meshed.

Further, as the rotating means of the safety cover (6), as described above, in addition to using the shaft (3), a link mechanism having a fulcrum above the propeller (D) may be used. Good.

Further, in the above embodiment, the safety cover (6) is rotatably supported, but the small ship (A) is described.
However, when it is always used in a place where there are many divers and swimmers, the safety cover (6) is fixedly placed on the outer circumference of the propeller (D), and in any condition, the outer circumference of the propeller (D) is A safety cover (6) may be located at the position so as to surely prevent the accident of being caught.

[0031]

As described above, if the small boat is equipped with the safety device according to the present invention, the competitors and divers can be pulled up to the small boats. Since the safety cover will be located on the outer circumference of the propeller of the ship, even if a mistake in maneuvering at this point occurs, there is no need to worry that the competitor or the diver will be caught in the propeller, and at the same time, the rope that was pulling the competitor. No longer has to worry about being caught in the propeller

Further, since the above-mentioned safety cover is located around the propeller even when it is difficult to check backward, it prevents the propeller from contacting a reef and being damaged, and also prevents the propeller from contacting another ship in the bay. it can.

Further, when the small boat is propelled at high speed, the safety cover jumps up to the rear of the propeller, so that the safety cover does not become a resistance when propelled at high speed.

Further, since the turning operation of the safety cover according to the ship speed is performed only by the action of the own weight of the safety cover and the flow of water, the structure is very simple and there is no fear of causing an operational error. ..

[Brief description of drawings]

FIG. 1 is a side view showing an example in which an outboard motor is equipped with a safety device for a small boat according to the present invention.

FIG. 2 is a front view showing an example in which the outboard motor is equipped with the small boat safety device according to the present invention.

FIG. 3 is a perspective view showing a safety cover according to the present invention.

FIG. 4 is a side view showing a state in which the safety cover has jumped up behind the propeller.

[Explanation of symbols]

 A Small boat D Propeller 1 Safety device for small boat 3 Shaft 6 Safety cover 8 Fin

Claims (1)

[Claims] 1. The front surface is open, and the other portion is in the form of a net-like or lattice-like box, and the inner size is set to a size that can completely cover the propeller equipped on a small boat. A safety cover arranged on the outer periphery, fins rotatably supported on both sides of the safety cover, and a fulcrum located above the propeller to movably support the safety cover toward the rear of the propeller. And a rotation angle of the fin between a closed state in which the outer side of the fin faces forward and a state in which the fin is opened to face right beside. ..