JPH04368295A - Support angle adjusting device for marine vessel propeller - Google Patents

Abstract

PURPOSE:To set a propeller automatically in a shallow water sailing position at one touch. CONSTITUTION:There are provided a propeller 5 installed freely rotatably on a hull 1, a propeller turning cylinder 9 to the propeller 5 in a tilt up position C or in a tilt down position A in turning motion, a shallow water sailing detecting sensor 7 to detect a position of the propeller 5 in the case of sailing on the shallow water and a means to stop the propeller 5 at a shallow water sailing position B by means of signals of the shallow water sailing detecting sensor 7 in the case of tilting up the propeller 5 by driving the propeller turning cylinder 9 during an engine operation.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support angle adjustment device for an outboard motor or marine propulsion device in an outboard/outboard motor.

0002

[Prior Art] A support angle adjustment device for a marine propulsion unit in an outboard motor or inboard-outboard engine moves the propulsion unit to a tilt-down position during normal cruising to maintain the propeller at the maximum water depth position for landing and mooring. When traveling in shallow water, the propulsion unit is moved to the tilt-up position to keep the propeller above the water surface, and when cruising in shallow water, the propulsion unit is moved to an intermediate position between the tilt-down position and the tilt-up position to keep the propeller above the water surface. It is designed so that it can be held directly below.

Conventionally, this type of support angle adjusting device has used a complicated link mechanism or a complicated hydraulic circuit. For example, Japanese Patent Application Laid-Open No. 58-122288 employs a mechanism in which the propulsion unit is automatically moved to a tilt-down position or tilt-up position by a hydraulic circuit, and manually moved to an intermediate position when navigating in shallow water. .

0004

[Problems to be Solved by the Invention] However, the above-mentioned conventional support angle adjustment device requires a mechanism for manually moving it to an intermediate position when navigating in shallow water, so the hydraulic circuit is complicated.
In addition, the driver had to manually adjust the position to an intermediate position while watching the sea spray behind him, which was a complicated operation.

[0005] The present invention solves the above problem, and provides a support angle adjustment device for a marine propulsion unit that can automatically set the propulsion unit to a shallow water navigation position with a single touch without changing the hydraulic circuit. The purpose is to provide

[0006]

[Means for Solving the Problems] To this end, the support angle adjustment device for a marine propulsion device of the present invention includes a propulsion device 5 rotatably attached to the hull 1, and a propulsion device 5 that is tilted to a tilt-up position C.
Alternatively, the propulsion unit rotation cylinder 9 rotates to the tilt-down position A, the shallow water navigation detection sensor 7 detects the position of the propulsion unit 5 during shallow water navigation, and the propulsion unit rotation cylinder 9 is driven during engine operation. When the propulsion device 5 is tilted up, the signal from the shallow water navigation detection sensor 7 causes the propulsion device 5 to tilt up.
and means for stopping the vehicle at the shallow water navigation position B. Note that the numbers added to the above configurations are for comparison with the drawings, and the configurations of the present invention are not limited thereby.

[0007]

[Operation] In the present invention, if the tilt switch is in the up position, it is determined whether or not the engine is stopped based on the signal from the engine rotation speed sensor, and if the engine is stopped, it is determined that it is time to land, moor, etc. , the propulsion unit is set to the tilt-up position, and if the engine is running, the propulsion unit is tilted up, and when a signal from the shallow water navigation position sensor is input, the propulsion unit is stopped and the propulsion unit is moved to the shallow water navigation position. Set to .

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing one embodiment of the support angle adjustment device for a marine propulsion device of the present invention, FIG. 2 is a hydraulic control circuit diagram in the same embodiment, and FIG. 3 is a diagram for explaining the control flow in the same embodiment. It is a diagram. Although this embodiment shows an example of an outboard motor, the present invention can also be applied to an outboard motor.

In FIG. 1, a support member 2 is fixed to the rear of a hull 1, and a propulsion device 5 is rotatably attached to the support member 2 via a rotation shaft 3. As shown in FIG. Further, a reaction force support cylinder 6 and a shallow water navigation position detection sensor 7 are attached to the support member 2, and a propulsion machine rotation cylinder 9 is provided between the support member 2 and the propulsion machine 5.

The reaction force supporting cylinder 6 supports the reaction force from the propulsion device 5 during cruising by sliding a piston rod 6a using hydraulic pressure, and the tip of the piston rod 6a is in contact with the propulsion device 5. It is now possible to separate. The propulsion unit rotation cylinder 9 is used to slide a piston rod 9a using hydraulic pressure, and rotate the propeller 5a of the propulsion unit 5 to a tilt-down position A, a shallow water navigation position B, and a tilt-up position C. The shallow water cruising position detection sensor 7 is a sensor that detects the shallow water cruising position B of the propulsion device 5, and has a sensor rod 7a elastically abutted against the propulsion device 5, and detects the amount of protrusion of the sensor rod 7a. It is configured to detect and output an electrical signal. Since this shallow water cruising position B changes depending on the size of the hull 1 and the propulsion device 5, the amount of protrusion of the sensor rod 7a can be adjusted using the adjustment screw 7b.

The reaction force supporting cylinder 6 and the propulsion unit rotating cylinder 9 are controlled by a hydraulic control circuit shown in FIG. The oil pump 10 is driven by a motor 11 so as to be able to rotate forward or reverse. It is connected to cylinder 9. In addition, reaction force supporting cylinders 6, 6 (left and right 2 of the hull 1
) is connected to the oil pump 10 side via a first oil passage 13 and a third oil passage 15.

The switching valve 12 includes a first check valve 12a, a second check valve 12b provided on the left and right sides, and a spool 1 slidably provided between both check valves 12a, 12b.
2c, and when oil is supplied to either one of the check valves 12a, 12b and the spool 12c,
Both check valves 12a, 12b are both open, and when oil is not supplied, both check valves 12a, 12b are closed. Note that 16 is an oil reservoir, and R is a relief valve that opens when the oil pressure exceeds a predetermined value.

The electronic control device 17 includes a tilt switch 1.
8. The signals of the shallow water navigation detection sensor 7 and the engine rotation speed detection sensor 19 are inputted, and arithmetic processing is performed based on these input signals, and the output signal is sent to the relay 20 to drive and control the motor 11. has been done. In addition,
21 is a battery.

The operation of the hydraulic control circuit having the above configuration will be explained. In the case of a tilt-up operation of the propulsion device 5, the motor 11 and the oil pump 10 are driven, for example, in the normal rotation, and the oil is passed through the first check valve 12a and the first oil passage 13 to one chamber of the propulsion device rotation cylinder 9. The oil in the other chamber is supplied to the second oil passage 14 and the second check valve 12b.
The piston rod 9a is extended and set at the tilt-up position C in FIG. In the case of tilt-down operation of the propulsion device 5,
The motor 11 and the oil pump 10 are driven in reverse, oil is supplied to one chamber of the propulsion unit rotation cylinder 9 via the second check valve 12b and the second oil passage 14, and the oil in the other chamber is supplied to the first oil passage. 13. By circulating the oil to the oil pump 10 through the first check valve 12a, the piston rod 9a is retracted and set to the tilt-down position A in FIG.

Next, the control flow of the present invention will be explained with reference to FIG. First, in step S1, the state of the tilt switch 18 is determined, and if it is in the down state, the process proceeds to step S3, where the motor 11 is reversed and the propulsion device 5 is tilted down, and in step S6, the tilt switch 18 is
It is determined whether or not it is off, and if it is off, the process advances to step S9 and the motor 11 is stopped. If the tilt switch 18 is in the up state, it is determined in step S2 whether or not the engine is stopped based on the signal from the engine rotation speed sensor 19. If the engine is stopped, it is determined that it is landing, mooring, etc., and step S4 The process advances to step S9 to rotate the motor 11 in the normal direction to tilt up the propulsion device 5. In step S7, it is determined whether or not the tilt switch 18 is off. If the tilt switch 18 is turned off, the process proceeds to step S9 and the motor 11 is stopped. In step S1, if the tilt switch 18 is off, this determination is repeated.

If the engine is in operation in step S2, the process proceeds to step S5, where the motor 11 is rotated in the normal direction and the propulsion unit 5 is tilted up, until a signal from the shallow water navigation position sensor 7 is inputted in step S8. Tilt up. When the propulsion device 5 is tilted up and reaches position B in FIG. 1 and a signal from the shallow water navigation position sensor 7 is input, the process proceeds to step S9 and the motor 11 is stopped.

[0017]

As is clear from the above description, according to the present invention, there is provided a propulsion device rotatably attached to the hull, and a propulsion device for rotating the propulsion device for rotating the propulsion device to a tilt-up position or a tilt-down position. a cylinder, a shallow water cruising detection sensor that detects the position of the propulsion unit during shallow water cruising; Since the propulsion device is provided with means for stopping the propulsion device at the shallow water navigation position based on a signal from the detection sensor, the propulsion device can be automatically set to the shallow water navigation position with a single touch without changing the hydraulic circuit.

[Brief explanation of the drawing]

FIG. 1: Part 1 of the support angle adjustment device for a marine propulsion device of the present invention.
Side view showing an example

[Figure 2] Hydraulic control circuit diagram in the same embodiment

[Figure 3] Diagram for explaining the control flow in the same embodiment

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Hull, 5... Propulsion device, 7... Shallow water navigation detection sensor 9... Cylinder for propulsion device rotation, 10... Oil pump, 11... Motor A... Tilt down position, B... Shallow water navigation position, C... Tilt up position

Claims (1)

[Claims] [Claim 1] A propulsion device rotatably attached to the hull;
a propulsion device rotation cylinder that rotates the propulsion device to a tilt-up position or a tilt-down position; a shallow water navigation detection sensor that detects the position of the propulsion device during shallow water navigation;
When the propulsion device rotation cylinder is driven during engine operation to tilt up the propulsion device, a means for stopping the propulsion device at a shallow water cruising position based on a signal from the shallow water cruising detection sensor is provided. Support angle adjustment device for marine propulsion equipment.