JPS61181797A - Steering device for small ship - Google Patents

Abstract

PURPOSE:To enable operation of a rudder in any desired attitude by arranging a vertically extending steering shaft having a steering handle in a construction capable of expanding and contracting. CONSTITUTION:A steering shaft 2 is provided in a vertical direction at the front of a deck 16. The steering shaft 2 has an upper end including a steering handle 3 and a lower end connected to a rudder 40 through a cable 4. The steering shaft 2 is composed of a cylindrical upper shaft 5 and a lower shaft 6 being slidably received in the upper shaft 5. The steering shaft 2 is so arranged that it is capable of expanding and contracting.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a steering system for a small boat with excellent operability.

(Prior Art) In general, small ships have limited space inside the ship, so it is required to pack repair items compactly and to improve the operability of operating devices. In particular, the smaller the ship, the stronger the demand is (for water play equipment, simple steering B that allows the steering to be done in various postures is required).
The development of a new location is desired.

(Object of the Invention) The present invention has been made in order to solve such conventional problems, and provides a steering device that has a simple configuration and can freely steer in various postures. be.

(Structure of the Invention) The present invention provides a steering device for a small boat, in which a steering handle projecting in the left-right direction is attached to the upper end of a steering shaft extending substantially in the vertical direction, and a lower end of the steering shaft is connected to a rudder, The above-mentioned steering shaft is configured to be extendable and retractable.

(Embodiment) In FIG. 1, a water play equipment 1 includes a fuel tank 11, an air intake pipe 12, an engine 1, and
3 and jet pump 14 are housed, and the fuel tank 1
1, an opening 21 and a cover 22 in front of the opening 21,
A drainage hole 23 is provided on the side. A deck 16 on which a person 10 rides is formed at the rear of the hull, and a rudder 40 consisting of a jet nozzle is attached to the lower rear end of the deck 16. In addition, in front of the deck 16 is a steering shaft 2 that extends approximately vertically.
is provided to protrude above the hull outer plate 15. A steering handle 3 projecting in the left-right direction is attached to the upper end of the steering shaft 2, and the lower end of the steering shaft 2 is connected to a rudder 40 via a cable 4 passing on both sides of the hull. Further, water sucked from the jet pump 14 passes through the water channel 19 and is injected in a predetermined direction from the rudder 40, thereby propelling and turning the hull.

The steering device is constructed as shown in FIGS. 2 to 6. That is, the steering shaft 2 consists of a cylindrical upper shaft 5 and a cylindrical lower shaft 6, the upper shaft 5 is made up of a cylindrical body 50 with a square cross section integrally attached inside the cylindrical body, and the lower shaft 6 is made of a cylindrical body with a square cross section, and is fitted into the solid body 50 so as to be movable in the axial direction. Therefore, the steering shaft 2 consisting of the upper shaft 5 and the lower shaft 6 is configured to be extendable and retractable, and configured to transmit rotational force.

The upper shaft 5 is held by the bearing 9 by penetrating the bearing 9 fixed to the hull outer plate 15 so as to be movable in the axial direction, and a head 51 is formed at the upper end portion protruding upward from this penetrating portion. A bearing 50 is also formed on this head 51, and the operating handle 3 is rotatably held by this bearing 50.

A ring 90 is attached to the outer periphery of the upper end of the upper shaft 5, and serves as a stopper when the upper shaft 5 is raised.

A circular flange 7 protruding to the outer periphery is attached to the lower side of the square cylindrical body of the lower shaft 6, and an extension part 5 is further attached to the lower side of the circular flange 7.
5 is formed, and this extension part 55 is formed with a cutout part 70 having a semicircular planar shape. And this flange 7
A cable 4 is passed around the outer circumference of the ship, and this cable 4 passes through a guide 41 and is connected to the rudder 40 from both sides of the hull, so that the rudder 40 is operated via the cable 4 by rotation of the lower shaft 6. It is configured. The extension part 55 is rotatably fitted into a receiving part 80 of a platform 8 formed on the hull, and the tip of a bolt 81 attached to this receiving part 80 is fitted into the notch part 70, whereby the lower shaft 6 can only rotate through a certain angle around its axis.

Although the above-mentioned embodiment shows an example in which the steering shaft 2 is tilted forward, the steering shaft 2 only needs to be installed substantially in the vertical direction, and may be tilted vertically or rearward. In addition, if the grip at the tip of the operating handle 3 is curved so that it can be grasped from various directions, the operating handle 3
may be fixedly attached to the steering shaft 2.

Next, the operation of this device will be explained. As shown in FIG. 2, a person 10 rides on the deck 16 and grips the grip portion 30 of the operating handle 3 to drive and steer the engine. At this time, if the person 10 is standing, the grip portion 3 is pulled up as shown in the figure, and the operating handle 3 is raised to a predetermined height. Operation handle 3
When pulled up, the operating handle 3 tilts upward because it is rotatably held by the bearing 5o, and the upper shaft 5
is raised in the bearing 9 to a predetermined height while being fitted with the lower shaft 6. By operating the operating handle 3 in this state, rotational force is transmitted from the upper shaft 5 to the lower shaft 6, and the 7-lunge 7
The rudder 4° is operated from the cable 4. Further, the ring 9° at the lower end of the upper shaft 5 comes into contact with the lower end of the bearing 9, thereby preventing the upper shaft 5 from rising any further, thereby stopping the handling of the upper shaft 5.

When the user kneels down to maneuver the boat in order to lower the center of gravity of the boat, it is sufficient to lower the upper shaft 5 and grip the handle portion so as to keep the operating handle 3 substantially horizontal.

Furthermore, in the case of water play equipment, in order to lower the center of gravity of the boat, the body may be placed above the water as shown in the figure. The grip portion 30 may be gripped by tilting the grip portion 30. When the upper shaft 5 is lowered, the upper end of the lower shaft 6
The lowermost position is maintained in this state.

(Effects of the Invention) As explained above, the present invention is a steering device for a small boat such as a water play equipment, in which the steering shaft is configured to be extendable and retractable so that it can be operated in various postures.
It has a simple configuration and excellent operability.

[Brief explanation of drawings]

Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is a perspective view of a steering shaft, Fig. 3 is a partially cutaway side view of the steering shaft, and Fig. 4 is a sectional view taken along the line rV-IV in Fig. 3. , FIG. 5 is a perspective view of the lower axis, and FIG. 6 is a sectional view taken along the line Vl--Vl of FIG. 3. 2... Steering shaft, 3... Operating handle, 4... Steering cable, 5... Upper shaft, 6... Lower shaft, 16...
Detsuki. Patent Applicant Yamaha Motor Co., Ltd. Representative Patent Attorney Etsushi Kotani Patent Attorney Masamukai Chief 1) Patent Attorney Yasuo Itaya Figure 2

Claims (1)

[Claims] 1. In a steering system for a small boat, a steering handle that protrudes in the left-right direction is attached to the upper end of a steering shaft that extends almost vertically, the lower end of the steering shaft is connected to a rudder, and the steering shaft is extendable and retractable. A steering device for a small vessel, characterized in that: