JPH0427690A - Rudder device for small ship - Google Patents

Abstract

PURPOSE:To prevent formation of a surplus protrusion on a step by supporting a rudder, wherein a member on the tip side is protruded toward a position below the step in a protruding state and the member on the tip side is positioned along a stern board in a retracting state, to the step, located in a state to be protruded toward the rear side of the stern board, by means of an axle. CONSTITUTION:A step 3 is located in a protruding state to the rear side of a stern board 2 of a ship hull 1 of a small ship, and a mounting axle 4 horizontal in the direction of the width of a ship is disposed to the step 3. A rudder 5 the base end part of which is rotatably mounted on the mounting axle 4 is held such that a position is varied between a retracting state and a protruding state. The rudder 5 formed approximately in a U-shape comprises a member 51 on the base end side, a member 52 on the tip side, and a curved part 50 for interconnecting the two members, and the member 52 on the tip part side is provided with a plurality of footboards 53. In the protruding state of the rudder 5, the member 52 on the tip part side is protruded toward a position below the rear side of the step 3 and sunk in a position under a water surface 90. In the retracting state of the rudder 5, the curved part 50 is engaged with a groove 31 and the member 52 on the tip part side is positioned along the stern board 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a rudder step device for a small boat sailing on the sea with one person or several 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 glides on the water at high speed and performs various movements, but it can also be used by stopping offshore and playing in the water using the boat as a base. At this time, a rudder device is installed at the stern of the ship to make it convenient for people to transfer from the water to the ship.When the rudder device is extended, its lower end is submerged in the water, and when it is stored (not in use), it is placed inside the ship. It is proposed that it can be stored in For example, as shown in FIGS. 7 and 8, a step 12 projecting rearward on the stern plate 11 of the hull 10
An L-shaped ladder 13 is attached to the step 12, and the base end of the ladder 13 is locked to the center of the step 12, so that in the extended state, the tip side member 15 with the treadle 14 is below the water surface 90. In the retracted and stored state, this tip side member 15 is arranged along the stern plate 11 so that there is no protruding object on the step 12, so that it does not get in the way when a person moves on the step 12. I have to.

[Problem to be solved by the invention]

In the above configuration, there is a problem in that when a person lifts his/her body by placing his or her feet on the step board 14 of the rudder 13 in order to transfer onto the ship from the water, it is difficult to climb up because there are no fingers on the step 12.

Further, if a handrail for this purpose is provided on the step 12, there is a problem in that a protruding object is formed on the step 12 and becomes an obstacle when a person moves on the step 12.

This invention was made to eliminate such conventional drawbacks, and forms a handrail for people to use the rudder to get onto the ship's hull without forming any unnecessary protrusions on the steps. The purpose of this invention is to provide a rudder device for a small boat.

[Means to solve the problem]

In this invention, a step is provided protruding from the rear side of the stern plate, this step is provided with a shaft for horizontal mounting in the width direction of the ship, and this mounting is performed using a rudder whose base end is rotatably mounted on the shaft. The ladder is held so that its position can be changed between a stored state and an extended state, and the ladder is formed into a substantially U-shape having a proximal end member and a distal end member, and the distal end member has a plurality of steps. is provided, and when the rudder is in an extended state, the tip end member protrudes backward and downward from the step, and in the stowed state, the tip end member is configured to extend along the stern plate.

The tip end side member may be configured to incline rearward when the ladder is extended.

In addition, a groove is formed in the upper step, and the curved part of the ladder is fitted into this groove when the ladder is stored, and the connecting member connects the proximal end member and the distal end member of the ladder. may be formed, and when the ladder is extended, the connecting member is placed on the step to maintain the extended state of the ladder.

[Effect]

In the above configuration, when the rudder is in the stowed state, there is no protrusion on the step because the tip side member is arranged along the stern plate, and when the rudder is installed and rotated around the axis and extended, The curved part protrudes above the step and forms a handrail for people to go up and down.

(Example) In FIGS. 1 to 5, the stern plate 2 of the hull 1 of a small boat
A step 3 is provided protruding from the rear side, and this step 3 is provided with a shaft 4 for horizontal mounting in the width direction of the ship, and for this mounting, a rudder 5 whose base end is rotatably mounted on the shaft 4 is provided. It is held so that its position can be changed between a stored state and an extended state. In this mounting section, a pair of grooves 31 are formed, and a member 44 is formed with a U-shaped horizontal cross section as shown in FIG.
The shaft 4 is inserted into the end of the groove 31 of the cage, and the shaft 4 is installed by penetrating both side walls of the member 44 and the ladder 5, and the nut 41 is screwed onto the end of the shaft 4 to fix it. has been done. In this installation, the member 44 is fixed to the step 3 with bolts 49. Further, a small protrusion 33 for preventing slipping is formed on the periphery of the upper surface of the step 3.

The ladder 5 includes a proximal end member 51 and a distal end member 52.
and a curved portion 50 connecting therebetween, and the distal end side member 52 has a plurality of steps of tread plates 53.
is provided, and when the rudder 5 is in an extended state, the tip side member 52 protrudes downward to the rear side of the step 3 and submerged below the water surface 90, and when the rudder 5 is in a stored state, the curved part 50 is fitted into the groove 31 and the tip part The side member 52 is configured to extend along the stern plate 2.

Further, a connecting member 54 is formed between the proximal end member 51 and the distal end member 52 of the ladder 5, and when the ladder 5 is extended, the connecting member 54 is placed on the step 3, so that the ladder 5 is maintained in the extended state.

Furthermore, since the proximal end member 51 and the distal end member 52 are formed to widen toward the end (inclining to each other), the distal end member 52 becomes inclined rearward when the ladder 5 is extended. .

FIG. 6 shows another embodiment of the present invention, which differs from the above structure only in that the ladder 5a is constructed such that the proximal end member 51a and the distal end member 52a are parallel to each other. ing. In this configuration, when the tip side member 52a is installed from a state where it is stored along the stern plate 2 and is rotated around the shaft 4 to be in an extended state, the tip side member 52a
A will become almost vertical and will be immersed in the water.

In the configurations shown in FIGS. 1 to 5, the rudder 5 is kept in the stowed (raised) state as shown by the solid line in FIG. 1 when the hull 1 is running. In this state, there are no protruding objects on step 3, so it is convenient for people to move on step 3. When the hull 1 is stopped and a person enters the water, the rudder 5 is mounted and rotated around the axis 4. As a result, the connecting member 54 is placed on the upper surface of the step 3, and its rotation is stopped, and the lower end of the tip side member 52 is submerged below the water surface 90, as shown by the imaginary line in FIG. In this state, the person 100 in the water can climb up the ladder 5 by putting his or her feet on the tread 53, and at this time, the person 100 must grasp the curved portion 50 of the ladder 5 that protrudes above the step 3 and pull up the body. Therefore, climbing up the ladder 5 is easy.

Also, when person 100 descends into the water from step 3, person 1
00 has the advantage that the ladder 5 is easy to use because the curved portion 50 of the ladder 5 can be used as a handrail.

Further, in this configuration, since the tip end side member 52 is arranged to be inclined rearward, there is also an advantage that the ladder 5 can be easily ascended and descended. Furthermore, in order to store the ladder 5 from the extended state, all you have to do is grab the curved part 5o and rotate the ladder 5 around the shaft 4 in the clockwise direction in Figure 1. Since the curved portion 50 protrudes, the operation is easy.

The operation and effect of the structure shown in FIG. 6 are almost the same as those described above.

〔Effect of the invention〕

As explained above, according to the present invention, when the rudder is stored, the tip side member is arranged along the stern plate, so there is no protrusion on the step, and the rudder is installed around the axis. When rotated and extended, the curved part protrudes above the step and forms a handrail for people to climb up and down.

Therefore, it is very convenient for people to move on the steps and for people on the water to use this ladder to get up or down from the boat.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view of the ladder in the stowed state showing an embodiment of the present invention, Fig. 2 is a plan view of the ladder in its tensioned state, and Fig. 3
The figure is a sectional view taken along the line ■-■ of FIG. 2, FIG. 4 is a perspective view of FIG. 2, FIG. 5 is a perspective view of the ladder mounting member, and FIG. 1 is a view corresponding to FIG. 1, FIG. 7 is a perspective view of a conventional example in a state where the rudder is extended, and FIG. 8 is an explanatory side view thereof. 1...hull, 2...stern plate, 3...step, 4
... Attachment is to shaft, 5, 5a... Ladder 5o... Curved part, 51... Proximal end side member 52... Distal end side member,
54...Connection member. Patent applicant Yamaha Motor Co., Ltd. Agent Patent attorney Etsushi Kotani Patent attorney Chief 1) Front Patent attorney Takao Ito

Claims (1)

[Claims] 1. A step is provided protruding from the rear side of the stern plate, and this step is provided with a horizontal mounting shaft in the width direction of the ship, and the base end is rotatably mounted on this mounting shaft. A ladder is held so that its position can be changed between a retracted state and an extended state, and this ladder is configured in a substantially U-shape having a proximal end member and a distal end member, and the distal end member has a plurality of steps. of a small boat, characterized in that when the rudder is in an extended state, the tip side member protrudes backward and downward from the step, and when the rudder is in the stowed state, the tip side member is configured to extend along the stern board. ladder device. 2. The rudder device for a small boat according to claim 1, wherein the tip end member is configured to tilt rearward when the rudder is in an extended state. 3. A groove is formed in the step, and the curved part of the ladder is fitted into this groove when the ladder is stored, and a connecting member that connects the proximal end member and the distal end member of the ladder is provided. 3. The rudder device for a small boat according to claim 1, wherein the rudder is configured such that the extending state of the rudder is maintained by placing the connecting member on the step when the rudder is extended.