JPH08156887A - Steering gear of jet propulsion boat - Google Patents

Abstract

PURPOSE: To provide a steering gear of a jet propulsion boat which can improve the operability of switches or the like and reduce the number of part items and cost while improving the attractiveness. CONSTITUTION: A steering handle 7a is provided on one end with a grip 16 for a trim angle adjusting mechanism to operate the jetting direction of a jet propeller provided on the stern. In a steering gear of a jet propulsion boat provided adjacent to the grip with a switch 32 for operating the start and stop of an engine, an operating cable driving pulley 19 formed in the grip 16 for the trim adjusting mechanism is received in a case 30 for the switch.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating device for adjusting the trim angle of a hull of a jet propulsion boat, which jets water sucked from the bottom of the ship to the rear of the stern to generate a propulsive force, and starts and stops an engine.

[0002]

2. Description of the Related Art In recent years, there have been small boats equipped with a jet propulsion device which generates a propulsive force by injecting water sucked from the bottom of the ship by an engine power from an injection port of the stern. In this jet propulsion boat, the trim angle is adjusted to improve the boat speed or to ensure stability during sailing, a trim adjustment mechanism, a switch for starting and stopping the engine, or a safety feature for falling water. The operating device is provided with a switch mechanism such as a lanyard switch for ensuring the above.

As such an operating device, there has been proposed a device in which various mechanisms are concentrated around the grip so that the steering wheel can be easily operated while grasping the steering wheel in order to improve operability. For example, FIG. 7 shows a conventional operating device, in which a driving pulley 52 is connected to a grip 51 rotatably mounted on the left end of a steering handle 50, an operating cable 53 is connected to the pulley 52, and The extension end of the cable 53 is connected to an injection port of a jet propulsion machine (not shown), and the pulley 52 is housed in a housing 54 fixed to the handle 50. A switch box 55 is attached to the steering handle 50, and an engine stop switch 56, a lanyard switch 57, and a start switch (not shown) are arranged in the box 55.

[0004]

However, in the above-mentioned conventional operating device, the housing 54 and the switch box 55 of the trim adjusting mechanism are separately formed, and therefore, both of the housing 54 and the switch box 55 adjacent to each other are provided. There is a problem that switches are moved away from the handle grip 51 in the axial direction by an amount corresponding to the wall thickness and the gap, and the switch operability is impaired when the grip 51 is gripped. Further, since it is a separate part, there is a problem that the cost increases as the number of parts increases. Furthermore, the size of the housing 54 and the switch box 55 is
Since the shapes are different, there is a problem that the design is not uniform and looks bad.

The present invention has been made to solve the above-mentioned conventional problems, and can improve the operability of switches and the number of parts to reduce the cost and improve the appearance of a jet propulsion boat. It is intended to provide an operating device of

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a switch for operating the start and stop of an engine by providing a trim angle adjusting mechanism grip for operating the jet direction of a jet propulsion device provided at the stern at one end of a steering handle. In the operating device for a jet propulsion watercraft provided adjacent to the grip, the operation cable driving pulley formed in the trim adjusting mechanism grip is housed in the switch case.

[0007]

According to the operating device for a jet propulsion watercraft of the present invention, the drive pulley of the grip for the trim adjusting mechanism is housed in the case of the switch mechanism. ， There is no need for an interval, and the switches can be brought closer to the grip, which improves the operability of the switches. Further, the grip housing is not required, the number of parts can be reduced accordingly, and the cost can be reduced. Further, the size and shape of the case can be unified, and the appearance can be improved.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 are views for explaining an operating device of a jet propulsion boat according to an embodiment of the present invention, and FIGS. 1 and 2 are plan views showing a grip portion of a steering handle of the embodiment device, respectively. , Cross-sectional plan view, FIG. 3 is a front view of the grip portion viewed from the driver's seat, FIG. 4 is a schematic configuration diagram showing a trim adjusting mechanism of the jet propulsion boat, FIG. 5 is a plan view of the jet propulsion boat, and FIG. 6 is trim adjustment. It is a figure which shows the principal part of a mechanism.

In the figure, reference numeral 1 is a jet propulsion watercraft in which the apparatus of this embodiment is adopted. In the propulsion watercraft 1, a hatch cover 5 is openably and closably arranged at a front portion of a hull 4 and a rear portion of the cover 5. A steering wheel 7 is arranged, and a seat 6 for seating an occupant is arranged further rearward.

A jet propulsion machine 10 is provided at the rear of the hull 4.
Is installed. This jet propulsion machine 10 has a ship bottom 2
A general structure in which a jet passage 11 extending from the rear part to the stern 4a is formed, an impeller 12 is arranged in the middle of the jet passage 11, and an injection port 13 is arranged at the rear end so as to be swingable horizontally and vertically. Then, the impeller 12 is rotationally driven by an engine (not shown) mounted inside the hull 4.

In the jet propulsion device 10, the impeller 12 is rotationally driven by the engine to suck up water from the inlet 11a of the jet passage 11, pressurize this water and inject it from the jet port 13 to generate propulsive force. Is configured to let.

The steering handle 7 has a structure in which a center support of a substantially T-shaped handle body 7a is rotatably supported on the hull 4, and the handle body 7a is surrounded by a handle cover 15. The handle body 7a is connected to the injection port 13 through a turning mechanism (not shown), and the handle body 7a is rotated left and right to eject the injection port 1a.
3 swings to the left and right, whereby the water jet direction changes to the left and right, and the hull turns left and right.

A throttle lever 17 is arranged at the right end of the handle body 7a, and a trim angle adjusting grip 16 is rotatably mounted at the left end of the handle body 7a with a bolt 16c to prevent it from coming off. The left grip 16 has a structure in which a rubber grip body 16b is fitted to a cylindrical grip body 16a.

A trim adjusting mechanism 18 is connected to the grip 16. The adjusting mechanism 18 is for adjusting the trim angle of the hull by swinging the injection port 13 of the jet propulsion device 10 from a horizontal position in an obliquely upward direction or an obliquely downward direction. This trim adjustment mechanism 18
Connects the drive pulley 19 integrally connected to the inner end of the grip body 16a and the intermediate pulley 24 of the converter 20 fixed to the hull with a pair of operation cables (pull cables) 21 and 21. The structure is such that the intermediate pulley 24 and the jet port 13 of the jet propulsion device 11 are connected by an operation cable 22 (push-pull cable). The intermediate pulley 24 is rotatably supported by the fixed bracket 23.

In the trim adjusting mechanism 18, as shown in FIGS. 4 and 6, when the left grip 16 is rotated clockwise in FIG. 6, the drive pulley 19 and the intermediate pulley 24 are rotated, and the operation cable is accordingly rotated. 22 raises the injection port 13 diagonally upward, which increases the hull trim angle. When the grip 16 is rotated in the counterclockwise direction, the operation cable 22 pushes the injection port 13 obliquely downward, which reduces the trim angle of the hull.

The grip 16 has a trigger lever 25.
Is rotatably supported by a return spring (not shown) while being biased to the locking position shown by the solid line in FIG. In the trigger lever 25, the engaging portion 25a is engaged with any of three cutout portions 30a formed in the switch box 30 which will be described later, and the grip 16 is moved to the neutral position (horizontal position) or the up position (upward). , For locking to the down position (downward). When the trigger lever 25 is rotated to the position shown by the chain double-dashed line in FIG. When released, the grip 16 becomes rotatable, and when the finger is released, the grip 16 is locked at any of the above positions.

A switch box 30 is fixed to the base of the handle body 7a. The switch box 3
0 abuts on the inner end surface of the grip 16 and covers the drive pulley 19 of the trim adjusting mechanism 18, so that the drive pulley 19 is housed in the switch box 30 of the switch mechanism.

The switch box 30 is provided with an engine start switch 32, a stop switch 33, and a lanyard switch 34. The lanyard switch 34 has a clip 36 removably fitted on a pin 35, and a curl cord 37 of the clip 36.
Is wound around the occupant's arm or the like, and when the occupant drops water from the hull 4, the clip 36 comes off, whereby the pin 35 is pushed in and the engine is stopped.

Next, the function and effect of this embodiment will be described. In the operating device of the present embodiment, the engine is started and stopped while holding both grips 16 and 17 of the steering wheel 7.
Acceleration, deceleration and trim adjustment can be done easily,
The maneuverability can be improved.

According to the apparatus of this embodiment, since the drive pulley 19 of the trim adjusting mechanism 18 is housed by the switch box 30 for the switch mechanism, both members are adjacent when the switch box and the drive pulley housing are formed separately. The wall thickness of the portion and the space between both members are unnecessary, and the switches 32 and 33 can be brought closer to the grip 16 by that much, and the operability of the switches is improved. Moreover, a housing for the drive pulley is not required, and the number of parts can be reduced and the cost can be reduced.

The size of the switch box 30,
The shape can be unified, the appearance can be improved, and the switch box 30 as a whole can be simplified and downsized.

[0022]

As described above, according to the operating device for a jet propulsion watercraft of the present invention, since the drive pulley of the trim adjusting mechanism is housed in the case for the switch mechanism, each switch can be brought closer to the grip side. In addition, the operability of the switch can be improved, the drive pulley housing is not required, the number of parts can be reduced, the cost can be reduced, and the degree of freedom in the shape of the case can be increased, and the appearance can be improved. There is.

[Brief description of drawings]

FIG. 1 is a plan view for explaining an operating device for a jet propulsion watercraft according to an embodiment of the present invention.

FIG. 2 is a cross-sectional plan view of a grip portion of the apparatus of the above embodiment.

FIG. 3 is a front view of a grip portion of the apparatus according to the embodiment as seen from a driver's seat.

FIG. 4 is a schematic configuration diagram showing a trim adjusting mechanism of the apparatus of the embodiment.

FIG. 5 is a plan view of a jet propulsion watercraft in which the device of the above-mentioned embodiment is adopted.

FIG. 6 is a view showing a main part of a trim adjusting mechanism of the apparatus of the above embodiment.

FIG. 7 is a front view showing a conventional operating device.

[Explanation of symbols]

 1 Jet Propulsion Boat 4a Stern 7 Steering Handle 10 Jet Propulsion Machine 13 Jet Port 16 Grip 18 Trim Adjustment Mechanism 19 Drive Pulley 21 Operation Cable 30 Switch Box (Case) 32-34 Switch

Claims (1)

[Claims] 1. A grip for trim angle adjusting mechanism for operating the jet direction of a jet propulsion device provided at the stern is provided at one end of a steering handle, and a switch for operating the engine start and stop is provided adjacent to the grip. In the operating device for a jet propulsion watercraft, the operating cable driving pulley formed in the grip for the trim adjusting mechanism is housed in the switch case, and the operating device for the jet propulsion watercraft.