JPS61282197A - Steerage for ship - Google Patents

Abstract

PURPOSE:To make a drive unit and a rudder both turnable, by connecting the rudder to the drive unit of an outboard motor at one side in making a surface linking each turning center as a border line. CONSTITUTION:A rudder 15 is made free of rotation around a turning center line 16 to the bracket 14 tightly attached to the stern. And, a handle 17 is attached to the rudder 15. On the other hand, a drive unit 24 is rotatably installed in and around the steering shaft 23 set up in a swivel bracket 22. And, a lower part of the drive unit 24 forms a skeg 25 guiding a stream of water. In addition, a propeller 26 is set up in this lower part of the drive unit 24, receiving power of an engine 27.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a steering system for a ship having an outboard motor as a backup propulsion device.

(Prior Art) Conventionally, some large yachts that are mainly propelled by wind have an outboard motor attached to the stern as an auxiliary engine.

Alternatively, there are ships that have a diesel inboard engine as the main engine and an outboard engine as an auxiliary engine for turning around in the bay.

The steering system of these ships that have an outboard motor as a backup propulsion device consists of a rudder rotatably attached to the stern and a rod-shaped handle attached to the rudder, or a round handle connected to the rudder with a cable. was.

The outboard motor was installed at the stern, independent of the above-mentioned steering device, and was used to maneuver the ship around small turns using the outboard motor's steering handle.

(Problem to be solved by the invention) However, depending on the conventional steering device, - When a person tries to steer a boat using an outboard motor, the rudder cannot be steered. When preventing free rotation using a force or a clamping device, there is a problem in that the turning ability due to the rudder is adversely affected.

On the other hand, even when the rudder rotates freely due to the water flow, it is difficult to achieve great turning performance using only the skeg of the outboard motor.

It was also difficult to obtain the same great turning performance with the skeg of an outboard motor when operating the rudder using the steering wheel.

(Means for solving the problem) A drive unit that has a bracket that is fixed to the hull, a skeg that guides water flow at the bottom, a propeller that generates propulsive force by the power of the engine, and a bracket that is connected to the drive unit and connects the drive unit. It has an outboard motor as a backup propulsion machine, which has a steering handle that can rotate relative to the ship, and a rudder that is rotatable relative to the ship. A steering system for a ship that turns the ship by operating a connected handle, characterized in that the rudder and the drive unit of the outboard motor are connected by a connecting member on one side with a plane connecting their rotation centers as a boundary. A steering system for ships.

(Function) Since the rudder and the outboard motor drive unit are connected by a connecting member on one side of the plane that connects their rotation centers, the drive unit and the rudder can be connected by operating the handle or one of the steering handles. Both can be rotated.

(Embodiment) FIG. 1 is a side view of a large yacht mainly propelled by wind, showing an embodiment of the present invention.

The hull 11 is provided with a sail 12 as a main propulsion device, and an outboard motor 13 as a backup propulsion device is disposed at the stern.

A bracket 14 is fixed to the stern of the ship, and a rudder 15 is rotatable about a rotation center line 16 with respect to the bracket 14. A handle 17 is directly attached to the rudder 15 by a pin IB.

For the outboard motor, connect the board 19 installed at the stern with the bracket 2.
It is attached by clamping at 0. A swivel bracket 22 is attached to the bracket 20 so as to be tiltable about a tilt axis 21.

Steering shaft 2 arranged on swivel bracket 22
A drive unit 24 is rotatably attached around 3.

The lower part of the drive unit 24 forms a skeg 25 that guides the water flow. Further, a propeller 26 is disposed at the bottom of the drive unit 24, and receives power from an engine 27 disposed at the top via a transmission mechanism 28 disposed below the engine 26 to generate propulsive force.

The drive unit 24 has a steering link 2 handle 29.
is fixed, and the drive unit 24 is attached to the skeg 25.
It can be rotated as one unit.

There is a ball joint 30 at the top of the drive unit 24.
However, ball joints 31 are also fixed to the upper part of the rudder 15, respectively. A rod 32 is passed between each ball joint, and the connection points thereof are paired around the ball joint.

FIG. 2 is a top view of the rear part of the large yacht as seen along the line 2 in FIG. 1, and FIG. 3 is a sectional view of the rudder and skeg under water.

The operator handles the steering wheel 17 and the main seat 33 connected to the sails.
You can steer the ship by operating the .

By steering the handle 17, both the rudder and the skeg simultaneously rotate around the rotation center axis 16 and the steering axis 23, respectively.

The two ball joints 30 and 31 are arranged on one side of the base plane. Therefore, although the rotation angle itself may be different during rotation, the rotation directions are the same.

In a bay or the like, by lowering the sails and operating the steering handle 28, both the rudder and the skeg can be rotated at the same time for steering.

At this time, by adjusting the throttle grip 3 of the steering handle 2 at the same time, it is possible to freely adjust the throttle opening for adjusting the engine output, which is connected to the throttle grip 38''. Since the ship can be steered while adjusting the ship speed, and the direction in which the propeller faces can be changed integrally with the drive unit 24, the ship has good steering performance.

(Effect of the invention) Since the rudder and the drive unit of the outboard motor are connected by a connecting member on one side of the plane that connects their respective rotation centers, the drive unit and the rudder can be connected by operating either the steering wheel or one of the steering handles. Both can be rotated. The rudder and skeg can be rotated in the same direction under the water, allowing the water flow to be bent over a larger area. This makes it possible to efficiently turn the boat both when the main propulsion device is used for propulsion and when the outboard motor is used for propulsion.

[Brief explanation of the drawing]

FIG. 1 is a side view of a large yacht mainly propelled by wind, showing an embodiment of the present invention. FIG. 2 is a top view of the rear part of the large yacht as seen along the line 2 in FIG. 1, and FIG. 3 is a sectional view of the rudder and skeg under water.

Claims (2)

[Claims] (1) A drive unit that has a bracket that is fixed to the hull, a skeg that guides water flow at the bottom, and a propeller that generates propulsive force by the power of the engine, and is connected to the drive unit and can be rotated relative to the bracket. It has an outboard motor as a backup propulsion machine, and a steering handle for
It has a rudder that is rotatably arranged relative to the ship,
In a steering system for a ship that turns the ship by operating a handle connected to the rudder, the rudder and the drive unit of the outboard motor are connected by a connecting member on one side of the plane connecting their rotation centers. Characteristic ship steering system. (2) The steering device for a ship according to claim 1, further comprising a throttle control grip provided at the tip of the steering handle for making the power generated by the engine variable.