JPH0798515B2 - Tilt control device for outboard motors - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outboard motor tilt angle device, and more particularly to a ship provided with a mechanism capable of automatically varying the tilt angle of the outboard motor body with respect to the hull. The present invention relates to a tilt angle control device for an external machine.

[Conventional technology]

In general, outboard motors are widely used for transportation and leisure as one of the propulsion devices suitable for small ships and the like.

By the way, it is well known that the speed of a hull equipped with an outboard motor remarkably differs depending on the size of the lift angle of the bow, that is, the trim angle, with respect to the water surface generated when the boat runs. In this case, the trim angle of the hull changes intricately depending on the speed of the hull and the angle of inclination of the outboard motor body with respect to the hull.
At this time, even if the engine output and external environment (wave, wind, etc.) are the same, the ship speeds are significantly different, which means that fuel consumption and the like are greatly affected.

Therefore, for relatively large boats, in order to travel economically at the optimum trim angle, the inclination angle of the outboard motor main body is continuously set within a predetermined range in response to the instruction from the driver while traveling. A variable power tilt drive mechanism is often used. This mechanism is equipped with a direct current motor and a hydraulic unit, which are interlocked with each other, and the driver controls these drives by operating a trim switch provided in the driver's seat. In many cases, the driver operates the switch while looking at the trim gauge in order to adjust the hull to the optimum trim angle.

[Problems to be solved by the invention]

However, in the above-described conventional technique, the driver has to operate the trim switch while watching the trim gauge while sailing. It has been often pointed out that it takes a long time to set the optimum trim angle of (1), that is, the optimum tilt angle of the main body of the hull, and thus the operating efficiency is significantly reduced.

In addition, when the engine of the outboard motor is fully open, the trim switch must be operated each time in order to maintain the optimum position and carry out economical sailing. In this case, the above-mentioned problems are more remarkable. I was in a situation where.

[Object of the Invention]

The present invention has been made in view of the problems of the related art, and provides an outboard motor tilt angle control device capable of improving the operation efficiency for setting the optimum tilt angle of the outboard motor body. Is the purpose.

[Means for solving problems]

Therefore, in the present invention, a trim switch for instructing the rotation of the inclination angle of the outboard motor body with respect to the hull, an excitation coil that is excited when the trim switch is turned to the "up" side, and the excitation coil. An outboard motor tilt angle control device comprising: an up-side relay including a contact that is energized by a coil to open and close; and a motor that is energized by closing the contact of the up-side relay to rotate to increase the tilt angle. , A tilt angle rotating means for fixing the tilt angle to a set value in the middle of increasing, and the tilt angle fixing means sets a current detecting section for detecting a current in the path and a current detected by the current detecting section. A meter relay having an on / off contact that opens when the voltage exceeds a value is configured in parallel, and the current detection unit is connected from the power supply unit to the up-side relay. Through a part of the path for energizing the motor, and the ON / OFF contact of the meter relay of the path for energizing the exciting coil of the up-side relay from the power source section through the trim switch. It is intended to achieve the above-mentioned object by adopting a configuration of inserting it in a part.

[Work]

When the trim switch is turned to the "up" side, the up side relay operates and the motor rotates. As a result, the inclination angle of the outboard motor body with respect to the hull rotates in the “up” direction, and the trim angle with respect to the water surface of the hull during sailing becomes large.

In the control in the "up" direction, when the tilt angle of the outboard motor body exceeds the set value, the tilt angle fixing means is activated.
Specifically, the current value supplied to the motor changes depending on the tilt angle, and the current value is displayed on the meter relay via the current detection unit. When this displayed value exceeds the value set by the pointer for setting the meter relay, the on / off contact of the meter relay opens at that point. That is, the increase of the inclination angle is stopped and the angle is fixed. Therefore, if the indication value of the pointer for setting the meter relay is set in advance to a value corresponding to the optimum tilt angle, the tilt angle can be easily and easily adjusted only by continuously turning on the trim switch in the “up” direction. It can be fixed up to the optimum value within a short time.

Example of Invention

 An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the drawings, 2 indicates a battery as a power source, and 4
Indicates an inclination angle fixing means for fixing the inclination portion formed between the outboard motor body and the hull to a set value. Further, 6 indicates a motor.
The motor 6 drives a hydraulic pump of a power tilt drive mechanism (also referred to as a power trim device) for rotating the outboard motor main body with respect to the hull within a predetermined vertical plane.
That is, the cylinder rod of the hydraulic cylinder is expanded and contracted depending on the rotation direction of the motor 6, so that the inclination angle is increased or decreased.

The inclination angle fixing means 4 is composed of an operating shunt resistor 8 as a current detecting portion, and a meter relay 10 having detection terminals connected to both ends of the operating shunt resistor 8. The meter relay 10 has a measurement / instruction unit for instructing the current flowing through the shunt resistor 8 for operation. Along with this, the meter relay 10 has a relay section and has a function of opening the on / off contact 10A when the indicated value exceeds a set value. The set value is preset by a setting pointer (not shown) provided in the meter relay 10 itself, and is easily changed by turning the setting pointer.

The plus side of the battery 2 reaches the common end of the trim switch 12. This trim switch 12 is set to “Release (R
L) ”,“ UP ”, and“ Down ”(DN). The up-side terminal of the trim switch 12 is the exciting coil 14A of the up-side relay 14, the on / off contact of the meter relay.
The negative side of the battery 2 is reached via 10 A (normally closed) and ground. On the other hand, the down side terminal of the trim switch 12 reaches the ground via the exciting coil 16A of the down side relay 16. Therefore, by turning the trim switch 12 from its “release” position to the “up” side or the “down” side, the up-side relay 14 or the down-side relay 16 is excited, and each contact 14B or 16B (either The normally open contact) is closed.

Here, a circuit 18 for preventing malfunction of the meter relay 10 is provided between the up-side terminal of the trim switch 12 and the meter relay 10.

Further, the positive side of the battery 2 is, as shown in the figure, a contact 14B of the up side relay 14 and a contact 16B of the down side relay 16.
Through the up side excitation coil 6A and the down side excitation coil 6B of the motor 6. Further, the excitation coils 6A and 6B reach the ground via the armature 6C and the thermo protector 6D. Therefore, as described above, when the trim switch 12 is turned to the up side, the up side exciting coil 6A of the motor 6 is excited by the energization from the battery 2. As a result, the armature 6C of the motor 6 is rotated in the up direction specified in advance. On the contrary, when the trim switch 12 is turned to the down side, the motor 6 is rotated in the down direction opposite to the above.

Here, since the load of the motor 6 changes depending on the inclination angle of the outboard motor body, the motor current also takes different values depending on the inclination angle.

Next, the overall operation of this embodiment will be described. Here, it is assumed that the set value of the meter relay 10 according to the setting pointer is a current value corresponding to the optimum tilt angle of the outboard motor body (that is, the optimum trim angle of the hull) when the engine is fully opened.

On / off contact 10A of meter relay 10 is normally closed
(On). For this reason, the trim switch 12
Is closed, the exciting coil 14A of the up-side relay 14 is excited and its contact 14B is closed. As a result, power is supplied from the battery 2 to the up-side exciting coil 6A of the motor 6, and the motor 6 rotates in the up direction. Therefore, when biased by this, a power tilt drive mechanism (not shown) operates, and the tilt angle of the outboard motor body is rotated in the up direction.

In this case, the motor current flowing through the motor 6 is detected by the shunt resistor 8 for operation and is instructed to the meter relay 10. When the indicated value exceeds the value set by the pointer for setting the meter relay 10, the on / off contact 10A is opened. As a result, the exciting circuit of the up-side relay 14 becomes "disconnected".
Then, the contact 14B is opened, and the power supply to the motor 6 is stopped. In other words, the tilt angle of the outboard motor body is
It is automatically fixed at the value at the time when the 10 on / off contacts 10A are opened, that is, at a substantially optimum position.

On the other hand, in order to decrease the tilt angle, the trim switch 12 may be turned to the down side.

Therefore, the driver does not need to operate while looking at the trim gauge as in the conventional case, and merely needs to continue to turn on the trim switch 12 for an appropriate time.

Also, when the sailing conditions (change of boat, outboard motor type, number of passengers, etc.) are changed, the above operation can be performed only by changing the indicated value of the meter relay setting pointer. It will be possible. As described above, according to the present invention, the operation efficiency can be remarkably improved as compared with the above-mentioned conventional technique.

Further, in the present embodiment, since the motor current hardly flows beyond the value set by the setting pointer, useless battery consumption is eliminated. Further, since the meter relay 10 may be assembled to the dashboard, it is not necessary to require an installation space for an outboard motor having a high packing density, and this facilitates implementation of the present invention on an existing outboard motor. It has the advantage of

Incidentally, the insertion position of the inclination angle fixing means 4 is not necessarily limited to the one shown in the accompanying drawings, and may be another position having the same function.

〔The invention's effect〕

Since the present invention is configured and functions as described above, it is possible to more accurately and quickly obtain the optimum value of the tilt angle as compared with the related art, and thus it is possible to significantly improve the operation efficiency and to reduce the configuration. It is possible to provide an outstanding outboard motor tilt angle control device that is simple and can be easily implemented in an existing system.

[Brief description of drawings]

The accompanying drawings are partially block circuit diagrams showing an embodiment of the present invention. 2 ... Battery as power supply unit, 4 ... Inclination angle fixing means, 6 ... Motor, 8 ... Operating shunt resistance as current detection unit, 10 ... Meter relay, 10A ... ON / OFF contact, 12 ...... Trim switch, 14 …… Up side relay, 14A …… Excitation coil, 14B …… Contact.

Claims (1)

[Claims] 1. A trim switch for instructing rotation of an inclination angle of an outboard motor body with respect to a hull, an exciting coil excited when the trim switch is turned to the "up" side, and the exciting coil. In an outboard motor tilt angle control device comprising an up-side relay including a contact that is energized and opened and closed, and a motor that is energized by closing the contact of the up-side relay to rotate to increase the tilt angle, The tilt angle fixing means for fixing the tilt angle to the set value during the up is provided, and the tilt angle fixing means includes a current detecting section for detecting the current in the path, and the current detected by the current detecting section is equal to or more than the set value. And a meter relay having an on / off contact which is opened in parallel with each other, and the current detection unit is connected from the power supply unit via the up-side relay contact. Inserted in a part of the path for energizing the motor, and the ON / OFF contact of the meter relay in a part of the path for energizing the exciting coil of the up-side relay from the power source section through the trim switch. An outboard motor tilt angle control device characterized by being inserted.