JPS60203596A - Driving circuit of tilt device for ship propulsion device - Google Patents

Abstract

PURPOSE:To easily and reliably regulate the inclination angle of a propulsion unit during sailing, by a method wherein, through one-action control of a manual switch, the propulsion unit is automatically set to a given inclination angle position. CONSTITUTION:When, during sailing in which a propulsion unit 15 is brought to a tilt down and a trim down position, a switch on the up side is turned ON through one-action, a driving motor is driven to the up side, and the propulsion unit 15 is inclined toward the up side. Said driving condition of the driving motor is continued until the propulsion unit 15 is inclined to a second inclination angle position. Meanwhile, when, during sailing in which the propulsion unit 15 is in a trim up position, a switch on the down side is turned ON through one-action, the driving motor is moved to the down side, and the propulsion unit 15 is inclined toward the down side.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a drive circuit for a tilt device for a marine propulsion device, which is suitable for use in outboard motors, inboard/outboard motors, and the like.

[Background Art] A marine propulsion device is equipped with a tilt device that allows the propulsion unit to be tilted in either a tilt-down direction or a tilt-up direction around a horizontal axis with respect to a clamp bracket that can be fixed to the hull. There are some that allow the flying attitude of the aircraft to be adjusted. In other words, this tilt device sets the propulsion unit to the optimum tilt angle position while cruising in response to changes in water surface conditions and cruising speed conditions.For example, when the shear on the water surface is large, the propulsion unit is Set the tilting angle of the unit to a small angle, i.e., to the tilt-down side, to ensure a stable attitude.If the surface of the water is small, set the tilting angle of the propulsion unit to a large angle, that is, to the tilt-up side, to achieve the fastest possible attitude. It is possible to secure it.

However, the conventional tilt device is equipped with a manual switch that establishes the energization state of the drive motor when the propulsion unit is tilted, and a detector that detects the tilt angle of the propulsion unit with respect to the clamp bracket. While visually confirming the tilting angle position of the propulsion unit, the manual switch is continuously turned on to energize the drive motor until the tilting angle of the propulsion unit reaches the desired position. That is, with the conventional tilt device, it is difficult to reliably adjust the tilt angle of the propulsion unit to a desired position during cruising.

[Object of the Invention] An object of the present invention is to enable the tilt angle position of the propulsion unit to be reliably and easily adjusted during cruising.

[Structure of the Invention #r,] In order to achieve the above object, a drive circuit for a tilt device for a ship propulsion device according to the present invention allows a propulsion unit to be tilted with respect to a clamp bracket that can be fixed to a ship hull. A drive motor, a manual switch that enables the drive motor to be energized when the propulsion unit is tilted, a detector that detects the tilt angle of the propulsion unit with respect to the clamp bracket, and after the manual switch enables the energization, the propulsion unit and control means for energizing the drive motor until the tilt angle reaches a predetermined tilt angle position detected by the detector.

[Detailed description of the invention] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an outboard motor lO to which an embodiment of the present invention is applied.
FIG. 2 is a circuit diagram showing the operating circuit of the tilt device according to the same embodiment, FIG. 3 is a partially cutaway plan view of the main part of FIG. 1, and FIG. FIG. 5 is a circuit diagram showing a motor operating circuit in a trim range of the shift device according to the same embodiment.

A clamp bracket 12 is fixed to the stern plate 11A of the hull 11, and a swivel bracket 14 is pivotally attached to the clamp bracket 12 via a tilt shaft 13 so as to be rotatable around a substantially horizontal axis. The swivel bracket 14 has
A propulsion unit 15 is rotatably mounted around a steering shaft via a steering shaft (not shown). Propulsion unit) 1
Two engines (22) 16 are mounted on the top of the 5 for propulsion.

A propeller 17 is provided at the bottom of the leek 15.

That is, the outboard 41110 tilts the propulsion unit 22) 15 by the tilt operation described below, so that its cruising attitude or storage attitude can be adjusted.

A base end of a tilt cylinder 18 is connected to the clamp bracket 12 by a pin, and a tip end of a piston rod 19 of the tilt cylinder 18 is connected to the swivel bracket 14 by a pin. The interior of the tilt cylinder 18 is divided into an upper chamber 21 on the side where the piston rod 19 is accommodated and a lower chamber 22 on the side where the piston rod 19 is not accommodated by a piston 20 fixed to the end of the piston rod 19.

Furthermore, base end portions of a pair of left and right trim sills 23 arranged on both sides of the tilt cylinder 18 are fixed to the clamp bracket 12 .

The tip of the piston rod 24 of the trim cylinder 23 is
The swivel bracket 14 can be brought into contact with the swivel bracket 14 in a state where they can be separated from each other. The interior of the trim sill 23 is divided into an upper chamber 26 on the side where the piston rod 24 is accommodated and a lower chamber 27 on the side where the piston rod 24 is not accommodated by a piston 25 fixed inside the piston rod 24. .

Next, the tilt cylinder 18 and the trim cylinder 2
The operation circuit No. 3 will be explained. 28 is a reservoir, which is capable of storing hydraulic oil.

29 is a drive motor which will be described in detail later, and 30 is a hydraulic pump. The pump 30 can be selectively rotated forward or reverse by the motor 29. 31 is the opening and closing device,
Shuttle piston 32, first check valve 33 and second
It has a check valve 34, a first shuttle chamber 35 is defined on the first check valve 33 side of the shuttle piston 32, and a second shuttle chamber 36 is defined on the second check valve 34 side of the shuttle piston 32, A first check chamber 37 is defined around the valve body of the first check valve 33, and a second check chamber 38 is defined around the valve body of the second check valve 34. That is, the first check valve 33
When the pump 30 rotates in the normal direction, the second check valve 34 is opened by the oil pressure supplied through the pipe 39, and when the pump 30 rotates in the reverse direction, the second check valve 34 is opened by the oil pressure supplied through the pipe 40 when the pump 30 rotates in the reverse direction. It is said that it can be opened. Further, the shuttle piston 32 operates to open the second check valve 34 by the oil feeding pressure caused by the forward rotation of the pump 30, and opens the first check valve 33 by the oil feeding pressure caused by the reverse rotation of the pump 30.

Further, the first check chamber 37 of the opening/closing device 31, the lower chamber 22 of the tilt cylinder 18, and the lower chamber 27 of the trim cylinder 23 are communicated through a conduit 41. Further, the second check chamber 38 of the opening/closing device 31 and the royal chamber 21 of the tilt cylinder 18 are communicated through a pipe 42. Also,
The reservoir 28 and the upper chamber 26 of the trim sill 23 are communicated through a conduit 43.

Further, the intermediate portion of the conduit 41 and the reservoir 28 are connected via a lower chamber relief valve 44.

That is, when the propulsion unit 15 is tilted up,
When the piston rods 19.24 of each cylinder 18.23 reach their maximum extended positions, the lower chamber relief valve 44 is opened and the oil discharged from the pump 30 is transferred to the reservoir 2.
It is possible to return to 8.

Further, the intermediate portion of the conduit 40 and the reservoir 28 are connected via an upper chamber relief valve 45.

In other words, when the propulsion unit) 15 is tilted down,
When the piston rods 19.24 of each cylinder 18.23 reach their maximum retracted positions, the upper chamber relief valve 45 opens and discharges oil from the pump 30 to the reservoir 2.
It is possible to return to 8. In addition, the above propulsion unit) 1
During the tilt-down operation of 5, the volume of each cylinder 18.23 is reduced by the volume of each cylinder 18.23 of each piston rod 19.24.
This is because the intrusion volume into 23 is reduced, resulting in a surplus in the amount of circulating oil.

The upper chamber relief valve 45 is also opened to allow oil discharged from the pump 30 to be returned to the reservoir 28.

That is, the tilt operation of the propulsion unit 15 by each of the cylinders 18 and 23 is as follows.

When the drive motor 29 is operated upward and the hydraulic pump is rotated forward, the oil discharged from the pump 30 flows through the pipe line 39 and the opening/closing device 3.
The liquid is sent to the lower chamber 22 of the tilt cylinder 18 and the lower chamber 27 of the trim cylinder 23 through the first shuttle chamber 35 and first check chamber 37 of the cylinder 18, the first check chamber 37, and the pipe line 41, and is sent to the lower chamber 22 of the tilt cylinder 18 and the lower chamber 27 of the trim cylinder 23.
The piston rods 19 and 24 of No. 3 are extended to enable the propulsion unit 15 to be tilted up. Each cylinder 18 above
．． The hydraulic oil in the upper chamber 21.
Returns to pump 30 via line 40.

Note that after the piston rod 24 of the trim sill 23 reaches the maximum extension position, only the piston rod 19 of the tilt sill 18 extends at a faster speed, tilting up the propulsion unit 15 to a larger tilt angle position. possible.

On the other hand, the drive motor 29 is operated to the down side, and the pump 30
When the pump 30 is reversed, the oil discharged from the pump 30 flows through the pipe 40, the second shuttle chamber 36 and the second check chamber 38 of the opening/closing device 31.
, through the conduit 42 to the upper chamber 21. of each cylinder 18.23.
26, the piston rods 19.24 of each cylinder 18.23 are retracted, allowing the propulsion 22) 15 to be tilted down.

The operating circuit of the drive motor 29 in the trim range will now be described.

As shown in FIG. 5, the drive motor 29 connects in series an up-side coil 51 to the armature 52, which is energized when the propulsion unit 15 is tilted up, and a down-side coil 53, which is energized when the propulsion unit 15 is tilted down, to the armature 52. It is a direct winding type connected in series. 54 is a power supply, 55 is an up-side switch, 56 is a down-side switch, and 57 is a control circuit as a control means in the present invention. The up side switch 55 is interposed between the power source 54 and the control circuit 57, and enables the drive motor 29 to be energized so that the drive motor 29 tilts the propulsion unit 15 to the up side. The switch 56 is interposed between the power supply 54 and the control circuit 57, and is configured to switch the drive motor 29 so that the drive motor 29 tilts the propulsion unit 15 in the tilt-down side.
9 can be brought into an energized state. As shown in FIG. 2, the up-side switch 55 and the down-side switch 56 are disposed on a steering wheel IIB that supports the hull 11 and enables the propulsion unit 15 to be steered.

The output terminal of the detection circuit 58 is connected to the control circuit 57 . The detector 58, as shown in FIGS. 3 and 4,
A housing 60 fixed to the clamp bracket 12 by a set screw 59, a rotating shaft 61 penetrating inside and outside the housing 60 and arranged parallel to the tilt shaft 13, and a resistance plate 62 fixed inside the housing arrow 0.
A contact 63 that is provided at the end of the rotating shaft 61 located inside the housing 60 and slidably contacts the resistance plate 62 with a predetermined contact pressure, and an end of the rotating shaft 61 located outside the housing 60. The swivel bracket 1 is fixed to the swivel bracket 1 by a link 64 rotatably fixed to the
4 and a link 67 which is connected to the link 64 by a pin 66 so as to be relatively rotatable thereto.

That is, the detector 58 is capable of detecting the tilting angle of the propulsion unit 15 with respect to the clamp bracket 12 using a potentiometer system, and detects the rotational shaft 61 that rotates when the propulsion unit 15 (i.e., swivel bracket) 14 is tilted with respect to the clamp bracket 12. Due to the sliding contact position of the contact 63 integrated with the resistance plate 62, it is possible to output a voltage corresponding to a change in the tilt angle of the propulsion unit 15 with respect to the clamp bracket 12.

The control circuit 57 includes a first setting device 68A and a second setting device 68B.
, a third setting device 68C, and a fourth setting device 68D. The first setter 68A outputs a reference voltage corresponding to the minimum tilt angle position of the propulsion unit 15 with respect to the clamp bracket 12, that is, the tilt-down-trim-down position. The second setter 68B outputs a reference voltage corresponding to a second tilt angle position that is larger by a predetermined angle, for example, 5 degrees, than the minimum tilt angle position of the propulsion unit) 15 with respect to the clamp bracket) 12. The third setting device 68C outputs a reference voltage corresponding to a third tilt angle position that is larger than the second tilt angle position of the propulsion unit 15 with respect to the clamp bracket 12 by a predetermined angle, for example, 5 degrees. The fourth setting device 68D outputs a reference voltage corresponding to a fourth tilt angle position, that is, a trim-up position, which is larger by a predetermined angle, for example, 5 degrees, than the third tilt angle position of the propulsion unit 15 with respect to the clamp bracket 12.

The control circuit 57 also includes a first comparator 69A, a second comparator 69B, a third comparator 69C, and a fourth comparator to which the output of the detector 58 and the reference voltages of the setters 68A to 88D are applied. It is equipped with a container 69D. The first comparator 69A is
It is equipped with a detector 69D. The first comparator 69A compares the output voltage of the detector 58 with the reference voltage of the first setter 68A, and determines that when the propulsion unit 15 is in the tilt-down/trim-down position, the output voltage of the detector 58 is the same as that of the tjSl setter. 6
A step output voltage is output while the voltage is below the reference voltage of 8A. The second comparator 69B compares the output voltage of the detector 58 and the reference voltage of the second setter 68B, and
5 reaches a position exceeding the second tilt angle position and the detector 58
While the output voltage exceeds the reference voltage of the second setter 68B,
Outputs step output voltage. The third comparator 69C compares the output voltage of the detector 58 with the reference voltage of the third setter 68C, and when the propulsion unit 15 reaches a position exceeding the third tilt angle position, the output voltage of the detector 58 becomes the third setter 68C. 3 setting device 68C
A step output voltage is output while the voltage exceeds the reference voltage.

The fourth comparator 69D compares the output voltage of the detector 58 with the reference voltage of the fourth setter 68D, and when the propulsion unit 22) 15 reaches the trim-up position, the output voltage of the detector 58 becomes the fourth setter 68D. A step output voltage is output while the reference voltage of the setter 68D is exceeded.

The control circuit 57 also includes an up-side flip-flop 70
and an up-side transistor switch 71 interposed between the power supply 54 and the up-side coil 51. In the up-side flip-flop 7o, after the voltage of the power supply 54 is applied to the set terminal by turning on the up-side switch 55, each output voltage of the second comparator 69B and the third comparator 69D is applied to the reset terminal. Until then, the up side transistor switch 71 is closed and the up side coil 51 is energized, so that the drive motor 29 can be driven in the up side. Note that each step output voltage of the second comparator 69B and the third comparator 69C is determined by the differentiators 72A and 72.
B, the impulse output voltage state is applied to the reset terminal of the up-side flip-flop 70, and the propulsion unit 15 moves up only at the moment when it reaches the second tilt angle position and the third tilt angle position. It is possible to apply a reset signal to the reset terminal of the side flip-flop 70. Also, the fourth comparator 69D
The step output voltage is transmitted to the transistor switch 73 interposed between the up-side switch 55 and the set terminal of the up-side freetube flop 70, and enables the transistor switch 73 to open, so that the propulsion unit 15 The possibility of closing of the up side transistor switch 71 after reaching the trim up position can be eliminated. Note that after the propulsion unit 15 reaches the trim-up position, the drive motor 29 can be driven and controlled by an operating circuit corresponding to a tilt range not shown in FIG.

The control circuit 57 also controls the down-side flip-flop 74.
and a down-side transistor switch 75 interposed between the power source 54 and the down-side coil 53. In the down-side flip-flop 74, after the voltage of the power supply 54 is applied to the set terminal by turning on the down-side switch 56, the output voltages of the third comparator 69C, the second comparator 69B, and the first comparator 69A are reset. Until the voltage is applied to the terminal, the down side transistor switch is closed and the down side coil 53 is energized, and the drive motor 2
9 can be driven to the down side. Furthermore, the second comparator 6
9B and the third comparator 69C are inverted by the inverters 76A and 76B, and then the differentiator 7
7A and 77B, it becomes an impulse output voltage state and is applied to the reset terminal of the down side flip-flop 74, thereby causing the propulsion 22) 15 to become the second
It is possible to apply a reset signal to the reset terminal of the down-side flip-flop 74 only at the moment when each of the tilt angle position and the third tilt angle position is reached. Further, the step output voltage of the first comparator 69A is
6 and the set terminal of the down-side flip-flop 74, the transistor switch 78 can be opened, and the down-side transistor after the propulsion unit 15 reaches the trim-down position. This makes it possible to eliminate the possibility of the switch 75 being closed.

Next, the operation of the above embodiment will be explained.

When the up-side switch 55 is turned on with a single touch while the propulsion unit) 15 is at the minimum tilt angle position, that is, the tilt-down/trim-down position, the power supply 5 is turned on.
4 voltage is applied to the set terminal of the up-side flip-flop 70, which closes the up-side transistor switch 71, energizes the up-side coil 51, drives the drive motor 29 to the up side, and drives the propulsion unit 15. Tilt to the up side. This driving state of the drive motor 29 continues until the propulsion unit 1.5 reaches the second tilt angle position and the output voltage of the second comparator 69B is applied to the reset terminal of the up-side flip-flop 70. That is, by turning on the up-side switch 55, the propulsion unit 15 is automatically tilted from the minimum tilt angle position to the second tilt angle position of the next stage.

Similarly to the above, when the up-side switch 55 is turned on with one touch while the propulsion unit) 15 is at the second tilt angle position or the third tilt angle position, the propulsion unit) 15 is automatically moved to the second tilt angle position. or the third tilt angle position to the next stage third tilt angle position or fourth tilt angle position, that is, the trim-up position.

On the other hand, while the propulsion Z unit 15 is in the fourth tilt angle position, that is, the trim up position, the down side switch 56 is
When turned on with a single touch, the voltage of the power supply 54 is applied to the set terminal of the down-side flip-flop 74, which causes the down-side transistor switch 75 to rj4g, energizing the down-side coil 53, and turning the drive motor 29 to the down side. and tilts the propulsion unit 15 to the down side. The drive state of the drive motor 29 is such that the propulsion unit 15 reaches the third tilt angle position and the third comparator 69C
continues until the output voltage of is applied to the reset terminal of the down-side flip-flop 74. That is, by turning on the down side switch 56, the propulsion unit 1
5 is automatically tilted from the fourth tilt angle position to the third tilt angle position of the next stage.

Similarly to the above, when the down side switch 56 is turned on with one touch while the propulsion unit 15 is in the third tilt angle position or the second tilt angle position, the propulsion unit 15 automatically moves to the third tilt angle position. angular position or second
It is tilted from the tilting angular position to the next stage second tilting angular position or the minimum tilting angular position, that is, the tilt-down-trim-down position.

That is, according to the above embodiment, the up side switch 55
Alternatively, by one-touch operation of the down side switch 56, the propulsion unit 15 can be automatically set to each of the minimum tilt angle position, the second tilt angle position, the third tilt angle position, and the fourth tilt angle position, and the propulsion unit 15 is automatically set to the minimum tilt angle position, the second tilt angle position, the third tilt angle position, and the fourth tilt angle position. It becomes possible to adjust the tilt angle position of the unit 15 reliably and easily while cruising.

In addition, in the present invention, the control circuit 5 in the above embodiment
By making the reference voltage set in each stage regulator 68A to 68D of 7 adjustable, the tilt angle position of the propulsion unit set by turning on the manual switch can be adjusted to an arbitrary level. good.

Further, in the present invention, the control means includes means for counting the number of times the manual switch is turned on, and has a plurality of predetermined tilt angle positions corresponding to the different number of times the switch is turned on. The drive motor may be energized until the predetermined tilt angle position is reached.

〔Effect of the invention〕

As described above, the drive circuit of the tilt device for a marine propulsion device according to the present invention includes a drive motor that allows the propulsion unit to tilt with respect to a clamp bracket that can be fixed to the hull, and a A manual switch that enables the drive motor to be energized; a detector that detects the tilt angle of the propulsion unit with respect to the clamp bracket; A control means for energizing the drive motor until the tilt angle position is reached is provided. Therefore, by one-touch operation of the manual switch, the propulsion unit can be automatically set to a predetermined tilt angle position, making it possible to reliably and easily adjust the tilt angle position of the propulsion unit while cruising. .

[Brief explanation of the drawing]

FIG. 1 is a side view showing an outboard motor to which a first embodiment of the present invention is applied, FIG. 2 is a circuit diagram showing an operating circuit of a tilt device according to the same embodiment, and FIG. 3 is a diagram similar to that shown in FIG. FIG. 4 is a plan view showing a partially cutaway main part, FIG. 4 is a view taken along the line IV-IV in FIG. 3, and FIG. FIG. 10... Outboard motor, 12... Clamp bracket, 1
5... Propulsion unit, 29... Drive motor, 55...
... Up side switch, 56... Down side switch,
57... Control circuit, 58... Detector. Figure 2

Claims (5)

[Claims] (1) A drive motor that allows the propulsion unit to be tilted relative to a clamp bracket that can be fixed to the hull, a manual switch that enables energization of the drive motor when the propulsion unit is tilted, and a propulsion unit that is relative to the clamp bracket. and a control means that energizes the drive motor until the propulsion unit reaches a predetermined tilt angle position detected by the detector after the manual switch establishes a state in which energization is possible. A drive circuit for a tilt device for a marine propulsion device. (2) the control means has a plurality of predetermined tilt angle positions;
The drive circuit for a tilt device for a marine vessel propulsion device according to claim 1, wherein the drive motor is energized until the propulsion unit reaches the next tilt angle position after the energization is enabled by the manual switch. (3) A drive circuit for a tilt device for a marine vessel propulsion device according to claim 1, wherein the control means is capable of setting a predetermined tilt angle position to an arbitrary level. (4) The manual switch includes an up-side switch that enables the drive motor to be energized so that the drive motor tilts the propulsion unit to the tilt-up side, and an up-side switch that allows the drive motor to tilt the propulsion unit to the tilt-down side. 2. The drive circuit for a tilt device for a marine vessel propulsion device according to claim 1, further comprising a down-side switch for enabling the drive motor to be energized. (5) The control means includes means for counting the number of ON operations of one manual switch, has a plurality of predetermined tilt angle positions corresponding to different numbers of ON operations, and has a predetermined single movement corresponding to the number of ON operations. A drive circuit for a tilt device for a marine vessel propulsion device according to claim 1, wherein the drive motor is energized until the tilt device reaches the angular position.