JPH0490995A - Trim and tilt mechanism - Google Patents

Abstract

PURPOSE:To prevent the occurrence of overheat, breakage of a universal joint, and waste of fuel by providing a regulating device to prevent coexistence of a tilt state with an engine running state. CONSTITUTION:When an engine 11 is started, an oil pressure switch 75 receives an oil pressure, and is changed from an ON-state to an OFF-state. Thus, When, with this state, a trim up switch 23 is turned ON, a trim limit switch 27 is brought into an ON-state in a range of a trim angle alpha, a current flows to an up relay 19 of a trim and tilt relay 17, and a drive unit 45 is rotated and lifted. However, when a tilt angle 8 is entered, the switch 27 is turned OFF and there fore, no current is fed to the relay 19, and lifting up of the unit 45 is suspended. Since. when the engine 11 is stopped, the switch 75 is turned ON, by turning ON the switch 23 regardless of the angle of the switch 27, a current flows to the relay 19, and the unit 45 is lifted up and brought into a tilt state. In above operation, the unit is not brought into a tilt state before the engine 11 is stopped.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a trim and tilt mechanism for rotating an outboard motor, or an outboard and outboard air drive unit, and in particular,
The present invention relates to a trim and tilt mechanism provided with a regulating device to prevent the engine from rotating in a trim state.

(Prior Art) FIG. 15 shows a schematic side view of a conventional outboard motor 1. Hull 3
A support device 9 is provided facing rearward on the outside of a transom 7 that rises from the bottom 5 at the rear of the boat, and the outboard motor 1 is supported by this support device 9. Outboard motor 1
An engine 11 is housed above the engine 11, and a drive shaft (not shown) is disposed vertically and rotates a propeller shaft running in the front-rear direction via gears, thereby rotating the propeller 13. The outboard motor 1 rotates around a substantially vertical axis for steering. In addition, the outboard motor can be rotated around a horizontal axis in order to raise the entire motor completely above the water surface and place it in a tilted state, place the propeller 13 in a trim state where it is positioned underwater, or change the depth in the water. ing.

The trim and tilt mechanism that rotates around the horizontal axis is operated by a motor.

FIG. 16 shows an electric circuit diagram of the motor of the trim and tilt mechanism. Power is supplied to the motor 15 by connecting an electrode such as a battery to the motor 1 through a trim and tilt relay 17.
This is done by connecting to 5. The trim and tilt relay 17 includes an up relay 19 that rotates the motor 15 in the forward direction to raise the outboard motor above the water surface, and a down relay 21 that rotates the motor 15 in the reverse direction to lower the outboard motor into the water. The up relay 19 can be turned on by turning on the trim up switch 23, and the down relay 21 can be turned on by turning on the trim down switch 25.

A second conventional example is shown in FIG. In this conventional example, the outboard motor 1 is directly attached to the transom 7 rather than to the support device 9.

Although the above conventional examples have been described with respect to outboard motors, there are some inboard/outboard motors or inboard motors in which the outboard portion of the propulsion device is a drive unit that can rotate around a horizontal axis.

Some of these drive units are equipped with a trim limit switch, and once the rotation exceeds the trim angle, the rotation is interrupted, and then further rotation can be performed by pressing another switch. It can be raised to a tilted state.

This trim limit switch will be explained with reference to FIGS. 18-20. FIG. 18 is a diagram showing the trim tilt state provided in FIG. 17, and FIG. 19 is an enlarged side view showing the trim state in which the propeller is lowered into the water. The trim limit switch 27 moves the inside of the cylindrical stator 29 to the movable element 31.
is now moving. An end portion of the mover 31 is rotatably attached to an illumination bracket 33 on the transom 7 side. The other end of the stator 29 is attached to a swivel bracket 35 on the outboard motor 1 side.

The mover 31 is made of a conductive material that conducts electricity.

The stator 29 includes a conductive portion 37 and an insulating portion 39. In the trim state where the rotation angle is small, the mover 3
1 and the conductive portion 37 of the stator 29 are in contact and the switch is turned on (FIG. 19). When the rotation angle becomes large and the movable element 31 becomes tilted, the movable element 31 comes into contact with the insulating part 39 of the stator 29, and the switch is turned off (FIG. 18). There are various shapes of such trim limit switches.

Note that 41 in the figure is a tilt cylinder, which constitutes a part of the trim and tilt mechanism.

The function of the trim limit switch 27 will be explained using the circuit shown in FIG. In this figure, the same parts as in FIG. 16 are given the same numbers.

A tilt switch 43 and a trim limit switch 27 are provided in parallel between the trim up switch 23 and the trim and tilt relay 17. The trim limit switch 27 controls the trim state angle (hereinafter referred to as trim angle) and the tilt state angle (
Hereinafter referred to as tilt angle. ).

That is, when the trim up switch 23 is turned on, the trim and tilt relay 17 is activated, the motor 15 rotates, and the hydraulic pressure generated by the rotation of the motor is transmitted through the hydraulic circuit to rotate the drive unit 45 to the trim angle α and pull it up. However, when the tilt angle becomes β, the slider 4
7 (corresponding to the mover) is the conductive portion 5 of the stator 49
1 to the insulating part 53, and the trim limit switch 2
7 is activated and turns off. As a result, the drive unit 45
rotation is interrupted. Next, by simultaneously turning on the tilt switch 43 and the trim up switch 23, it becomes possible to further rotate the drive unit 45 and raise it to the tilted state.

Next, FIG. 21 shows a conventional example of a starting electric circuit for starting an engine of an inboard/outboard motor or an outboard motor.

This circuit is for rotating the starter motor 55 of the engine. When the start switch 57 is turned on, current from the battery 59 serving as a power source flows through the coil of the starter relay 61, and the contacts in the starter relay 61 are turned on. As a result, current from the battery 59 is supplied to the S contact of the starter motor 55, the pinion of the starter motor 55 pops out, the starter motor 55 rotates, and the engine eventually starts.

Further, FIG. 22 shows a second conventional example of a starting electric circuit. This conventional example does not use a starter relay. When the start switch 57 is turned on, the starter motor 5
A current flows directly to the S terminal of the motor 5, the pinion pops out, the starter motor 55 rotates, and the engine eventually starts.

(Problem to be Solved by the Invention) However, according to such conventional technology, the propeller is lifted above the water surface and the engine is rotating at the same time. If the engine continued to rotate without water being taken in, there was a risk of overheating. Additionally, in the case of inboard/outboard motors, the universal joint, which transmits the driving force of the engine installed on the hull side to the propeller on the drive unit side, may rotate when the universal joint exceeds the allowable angle. There was a risk of damage to the universal joint.

Furthermore, there was a fear that fuel would be wasted.

This invention was made to solve the above problems.
The purpose is to provide a trim and tilt mechanism that does not cause overheating, damage to the universal joint, or wasteful fuel consumption.

[Structure of the Invention] (Means for Solving the Problems) The present invention has been made to achieve the above-mentioned object, and the present invention has been made in order to achieve the above-mentioned object. The trim and tilt mechanism
The engine is equipped with a regulating device that prevents the tilt state from coexisting with the engine rotation state.

The regulating device has means for operating with energy generated by the rotating engine by connecting an open/close switch in parallel to a circuit that turns on and off the trim and tilt relay in order to supply power to the motor of the trim and tilt mechanism. Other regulating devices may be installed in electrical circuits such as the engine starting system, ignition system, or fuel supply system, and may be closed when the drive unit is in a trim state and closed when the drive unit is in a tilted state. It may also be a trim limit switch that opens.

(Function) By not allowing the tilt state and the engine rotation state to coexist, it is possible to prevent the engine from rotating while the propeller is raised above the water surface.

If the regulating device uses hydraulic means or electric means to open and close the circuit of the trim and tilt relay, it is possible to prevent the tilting state from occurring while the engine is rotating.

Further, when the regulating device is a trim limit switch, it is possible to prevent the engine from rotating in the tilted state.

(Example) In FIGS. 1 to 3, a first example of the first invention and the second invention is shown. Fig. 2 is a schematic side view of the entire hull of the boat having an inboard/outboard motor equipped with the trim and tilt mechanism of this embodiment, Fig. 3 is an enlarged view of the main part of Fig. 2, and Fig. 1 is the trim and tilt mechanism of Fig. 2. FIG. 3 is an electrical circuit diagram of the tilt mechanism.

In FIG. 2, a drive unit 45 is provided outside a transom 7 rising from the bottom 5 at the rear of the hull 3. This drive unit 45 includes the propeller 13 and the rudder 6.
3, and can rotate around a tilt axis 65 which is a horizontal axis.

An engine 11 is provided on the hull 3 side, and this engine 1
A drive shaft 67 that transmits a driving force of 1 passes through the transom 7 and is connected to a propeller shaft (not shown) of the propeller 13 via a universal joint 69. The rotation of the drive unit 45 around the tilt axis 65 transfers the hydraulic pressure generated by the motor 15 to the hydraulic control pipe 7.
This is done by a trim and tilt mechanism utilized through 0. This rotation operates the trim switch 27. In the trim switch 27, one of the stator 49 and slider 47 shown in FIG. 3 is attached to the transom shield 71 on the drive unit 45 side, and the other is attached to the housing 73. The stator 49 includes a conductive portion 51 and an insulating portion 53.

Among the electric circuits that drive the motor 15 of the trim and tilt mechanism shown in FIG. 1, conventional examples (FIGS. 16 and 20)
The same parts are given the same numbers. An oil pressure switch 75 is provided between the trim up switch 23 and the trim and tilt relay 17. That is, hydraulic pressure generated by a hydraulic pump rotating as the engine 11 (see FIG. 2) rotates is transmitted to an oil pressure switch 75 (hydraulic means) through a hydraulic vibrator 77. This oil pressure switch 75 is a hydraulic means in this embodiment, and is provided in parallel between the trim up switch 23 and the trim limit switch 27. In FIG. 3 showing a specific configuration of the trim limit switch 27, the slider 47 that rotates around a rotating shaft 79 (which is coaxial with the tilt axis 65 in FIG. 2) is an arc-shaped stator 27. It is designed to slide. The angle at which current can be passed through contact between the slider 47 and the stator 27 is within the range of the trim angle a, and within the range of the tilt angle β, the stator 27 serves as an insulating portion 53 and conduction is not possible. Become.

Next, the operation of this embodiment will be explained. When the engine 11 is started, the oil blower switch 75 receives hydraulic pressure and is turned from on to off. Therefore, when the trim up switch 23 is turned on in this state, the trim limit switch 27 is turned on within the trim angle α range, current flows to the up relay 19 of the trim and tilt relay 17, and the drive unit 45 rotates. and be lifted up.

However, if this rotation continues and it enters the range of the tilt angle β, the trim limit switch 27 is turned off, so no current is supplied to the trim up relay 19, and the drive unit 45
will be suspended. Next, when the engine 11 is stopped, the oil pressure switch 75 is turned on from off, so if the trim up switch 23 is turned on, current flows to the up relay 19 and the drive unit 45 is turned on, regardless of the angle of the trim limit switch 27. is pulled up and placed in a tilted state. In this way, the tilt state can be achieved only after the engine 11 is stopped.

Next, a second embodiment of the first invention and the second invention is shown in FIG.

The same parts as in the first embodiment (FIG. 1) are given the same numbers.

This embodiment is equipped with an alternator 81 that generates electricity by the rotation of the engine 11 and a relay 87 (electrical means) operated by the alternator 81 instead of the oil pressure switch 75 (hydraulic means) of the first embodiment. It is. The trim limit switch 27 is a trim limit switch of a type in which a mover 31 moves inside a cylindrical stator 29, which is different from that of the first embodiment (the first trim limit switch of the conventional example).
8 and 19). The relay 87 is provided in parallel to the trim limit switch 27.

Next, the operation of this second embodiment will be explained.

When the engine 11 is started, the alternator 81 generates electricity and voltage is generated at the N terminal, which activates the relay 87 and turns it off. In this state, trim up switch 2
3 is turned on, the trim limit switch 27 is turned on within the range of the trim angle α, current flows to the up relay 19 of the trim and tilt relay 17, and the motor 15 rotates.
An outboard motor (not shown) is rotated and pulled up by a hydraulic mechanism (not shown). When the rotation angle reaches the tilt angle β, the trim limit switch 27 is turned off, and the supply of current to the up relay 17 of the trim and tilt relay 19 is stopped.
The lifting of the drive unit 45 is interrupted. next,
When the engine 11 is stopped, the alternator 81 stops generating electricity, and the relay 87 is turned on. When the trim up switch 23 is turned on in this state, the trim switch 27
Regardless of the angles α and β, current flows through the relay 87 to the up relay 19 of the trim and tilt relay 17, making it possible to further pull up the drive unit 45 and bring it into a tilted state.

The trim limit switch 27 used in the above two embodiments can arbitrarily set the trim angle α and tilt angle β. That is, as shown in FIG. 6, the angle α at which the propeller 13 projects above the water surface 89 varies depending on the draft of the hull 3. Therefore, it is desirable that the trim angle α and the tilt angle β be set according to the draft.

As shown in FIGS. 7 and 8, in the trim limit switch 27 in which the stator 49 is cylindrical, the mounting portion 91 of the stator 29 and the mounting portion 93 of the slider 31 are
The length between can be changed arbitrarily.

That is, for example, a long hole 95 having an arc shape centered around the mounting portion 91 of the stator 29 is formed in the clamp bracket 35, and the mounting portion 93 of the mover 31 is attached to the long hole 95. This attachment takes place, for example, by bolts and nuts. By moving the attachment part 93 along the elongated hole 95, it is possible to arbitrarily change the dimension between the two attachment parts 91 and 93 as shown in FIGS. 7(A) and 7(B). This makes it possible to arbitrarily set the trim angle α and the tilt angle β.

Also, regarding the trim limit switch 27 of the type having an arc-shaped stator, the trim angle a and the tilt angle β can be changed by changing the angle of the stator 49 with respect to the slider 47 as shown in FIGS. It is possible to change the

That is, since the slider 47 is generally fixed to the tilt shaft 65 (see FIG. 2), it is not moved in this embodiment, but the rotational position of the stator 49 relative to the slider 47 is changed. In this modification, the stator 49 is rotated relative to the case 97 and fixed to the case 97 using nine fixing screws at any rotational position. Thereby, the relative rotational position of the slider 47 and the stator 49 can be changed (FIGS. 9A and 9B), and the trim angle α and the tilt angle β can be changed. The trim limit switch that allows you to manually change the trim angle and tilt angle as described above is the first trim limit switch described below. Embodiment of the third invention (Fig. 5,
1 to 14) is particularly meaningful.

A first embodiment of the first invention and the third invention is shown in FIG. still,
The same parts as in FIG. 22 showing the conventional example are designated by the same numbers. Start switch 57 and starter relay 61
A trim limit switch 27 is provided in series between. This trim limit switch 27 may be of either type (FIG. 7 or FIG. 9), but here it will be explained assuming that the stator 49 has an arc shape (the type shown in FIG. 9).

When the slider 47 of the trim limit switch 27 is within the preset trim angle α, the slider 47 is in contact with the conductive portion 51 of the stator 49, and the switch is turned on. There is. Therefore, when the start switch 57 is turned on, the current from the battery 59 flows to the start switch 57.
, current flows through the coil of the starter relay 61 through the trim limit switch 27. Therefore, the contacts in the starter relay 61 are turned on, current flows to the S terminal of the starter motor 55, the pinion of the starter motor 55 pops out, the motor 55 rotates, and eventually the engine starts. However, when the slider 47 of the trim limit switch 27 is within the predetermined tilt angle β range, the slider 47 is in contact with the insulating portion 53 of the stator 49, and the switch is turned off. . Therefore, even if the start switch 57 is turned on, no current flows to the starter relay 61 and the starter motor 55 does not rotate. Therefore, the engine will not start. As described above, according to this embodiment, the engine will not start in the tilted state.

Next, a second embodiment of the first invention and the third invention is shown in FIG. In the first embodiment (FIG. 5), the limit switch 27 opens and closes the circuit of the starter relay 61 (starting system electrical circuit) using the rotation angles α and β, but in this second embodiment, the limit switch 27 opens and closes the circuit of the starter relay 61 (starting system electric circuit) directly S of starter motor 55
Open and close the terminal circuit. This also provides the same effect as the first embodiment.

Next, a third embodiment of the first invention and the third invention will be shown in the twelfth example.

This example is an example in which the engine is a point ignition gasoline engine. In the same figure (A), 5
5 is a starter motor, 57 is a start switch, 59 is a battery, 61 is a starter relay, 101 is an ignition coil, 103 is a distributor, 105 is a spark plug, and 107 is a register. In this starting electric circuit, trim switch 2 is placed on either w, x, or y.
7 ((B) in the same figure) are installed in series. As a result, the engine cannot be started unless the trim limit switch 27 is in the range of the trim angle α and is turned on.

Note that (C) in the same figure is a table showing the operations in (A) and (B) in the same figure.

A fourth embodiment of the first invention and the third invention is shown in FIG. In this embodiment, the engine is a diesel engine. In the same figure (A), 55 is a starter motor, 57 is a start switch, 59 is a battery 109
is the glow plug, 111 is the glow signal, 113 is the injection pump, 115 is the injector 11
7 is an engine stop solenoid. FIG. 5(B) is a chart showing the operation of the circuit in FIG. 1(A).

(A) By providing the trim limit switch 27 between the start switch 57 and the engine stop solenoid 117, fuel is supplied to the injector 115 only when the trim limit switch 27 is at the trim angle α. . Therefore, in the tilted state, fuel is not supplied and the engine does not start.

A fifth embodiment of the first invention and the third invention is shown in FIG. In the figure, 55 is the starter motor, 57 is the start switch, 5 is the battery, 61 is the starter relay 119
is rectifier, 121 safety switch, 123
is a CDI unit, 125 is an alternator, 27 is a trim limit switch, 87 is a relay that is normally open, 127 is a tachometer, and 105 is a spark plug.

The operation of this embodiment will be explained. In the circuit described above, in order to stop or prevent the engine from starting, the safety switch 121 may be turned on and the current generated by the source coil in the CDI unit 123 may be grounded. Therefore, this trim limit switch 2
7 and relay 87, and the engine cannot be started in the tilted state.

In the first to fifth embodiments of the first and third inventions described above, the trim limit switch is turned off in the tilted state, and this trim limit switch is connected to the starting system electric circuit, the ignition system electric circuit, or the fuel The engine can be prevented from starting by opening the electrical supply circuit or by dropping the current needed for ignition to ground. This prevents the engine from continuing to rotate while the propeller is raised above the water surface.

[Effects of the Invention] As explained above, according to the present invention, by providing the trim and tilt mechanism with a regulating device that prevents the tilt state and the engine rotation state from coexisting, the engine can be adjusted while the propeller is raised above the water surface. It is possible to prevent overheating caused by continuous rotation. Further, in the case of an inboard/outboard motor, it is possible to prevent the engine from continuing to rotate in a state where the universal joint has exceeded the permissible angle, and damage to the universal joint can be prevented.

It also saves fuel.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram for driving a motor of a trim and tilt mechanism showing a first embodiment of the first invention and the second invention;
The figure is a schematic side view of the entire hull having an inboard and outboard motor equipped with the electric circuit of Figure 1, Figure 3 is an enlarged view showing the trim limit switch of Figure 2, and Figure 4 is the first invention and the second invention. the second of
An electric circuit diagram for driving a motor of a trim and tilt mechanism showing an embodiment, FIG. 5 is an electric circuit diagram of a starting system showing a first embodiment of the first and third inventions, and FIG. 6 has an outboard motor. FIG. 7 is an overall schematic side view of the ship, and is a diagram showing an example of a trim limit switch that can be used in FIG.
(B) is a diagram showing the states in which the settings of the trim limit switch have been changed, Figure 8 is a diagram showing the state in which the trim limit switch of Figure 7 is installed, and Figure 9 is a diagram showing another type of trim limit switch. Figures (A) and (B) are diagrams showing the state in which the settings of the trim limit switch have been changed;
10 is a diagram showing the installation of the trim limit switch of FIG. 9, and FIG. 11 is a diagram showing the installation of the trim limit switch of FIG. A starting system electric circuit diagram showing the second embodiment of the third invention, FIG. 12 is an electric circuit diagram showing the third embodiment, where (A) is an overall diagram and (B) is a trim limit diagram. 13 is a diagram showing the fourth embodiment; FIG. 13 is a diagram showing the fourth embodiment; FIG. 14 is a circuit diagram showing the fifth embodiment of the same figure, FIG. 15 is a side view showing a conventional outboard motor, and FIG.
The figure is an electric circuit diagram for driving the motor of the trim and tilt mechanism shown in Fig. 15, Fig. 17 is a side view of the outboard motor showing a second conventional example, and Fig. 18 is an enlarged view of the main parts of Fig. 17. , 1st
Figure 9 is a diagram explaining the action of Figure 18, Figure 20 is a diagram explaining the action of Figure 17.
FIG. 21 is an electrical circuit diagram of a conventional starting system, and FIG. 22 is an electrical circuit diagram of a starting system showing another conventional example. DESCRIPTION OF SYMBOLS 1...Outboard motor, 3...Hull, 5...Bottom, 7...Trans Am, 9...Support device,
15...Motor, 17...Trim and tilt relay 19...Up relay 21...Down relay 2
3... Trim up switch, 25... Trim down switch, 27... Trim limit switch, 29.49... Stator, 31... Mover 37...
Continuity part, 39... Insulation part, 33... Illuminated bracket, 35... Swivel bracket, 47... Slider, 55... Starter motor, 59... Battery 57... Start switch , 61...Starter relay 75--Oil pressure switch, 81...Alternator, 87...Relay 97...Case, 9
9... Fixing screw, 95... Long hole. (B) Figure 9 Figure 15 Figure 16 Figure 21 Figure 22

Claims (3)

[Claims] (1) A trim characterized in that the trim and tilt mechanism that rotates the outboard unit around an axis to put it in a trim state or a tilt state is equipped with a regulating device that prevents the tilt state and the engine rotation state from coexisting. and tilt mechanism. (2) The regulating device turns on the trim and tilt relay to supply power to the motor of the trim and tilt mechanism;
The trim and tilt mechanism according to claim 1, characterized in that an on-off switch is connected in parallel to the circuit to be turned off, and the on-off switch is opened and closed by a means operated by energy generated by a rotating engine. . (3) The regulating device is a trim limit switch that is installed in an electric circuit such as an engine starting system, ignition system, or fuel supply system, and closes when the drive unit is in a trim state and opens when the drive unit is in a tilt state. Claim (1)
) Trim and tilt mechanism as described.