JP4184463B2 - Water motorcycle propulsion nozzle control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a propulsion nozzle for a water motorcycle that operates by obtaining a propulsive force by jetting a water flow from the propulsion nozzle, and more particularly to a propulsion nozzle control device for a water motorcycle that can control the vertical angle of the propulsion nozzle.
[0002]
[Prior art]
BACKGROUND ART Conventionally, a water motorcycle is provided with a jet propulsion device driven by an engine, and the propulsion nozzle of the jet propulsion device is configured such that its vertical angle is adjusted by a trim adjusting device and the hull is stabilized. The trim adjusting device includes an angle detector that detects the angle of the propulsion nozzle, and a trim meter that displays the detected angle so that the driver can visually recognize the detected angle.
[0003]
As an angle detector of this trim adjusting device, for example, a potentiometer is used as disclosed in JP-A-7-165185, and a control circuit of the trim adjusting device using this potentiometer is shown in FIG. It is configured as shown. That is, the control circuit 101 operates the five ICs 101 to IC105 including comparators, the four ICs 106 to IC109 including NOR circuits, the relay circuit 102 including two relays 102a and 102b, and the trim meter. Are composed of a meter control circuit 103 having two ICs 110 and 111.
[0004]
[Problems to be solved by the invention]
However, in this trim adjusting device, the potentiometer 104 itself has a low marketability and the parts cost is high, or a separate switch is required for position detection, and the number of parts increases. Is easy to improve. In addition, a dedicated meter control circuit 103 for displaying the signal detected by the angle detector on the trim meter is required, which increases the cost of the parts, and the cost of the trim adjusting device as a whole increases. There was a problem that it was likely to be high.
[0005]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a propulsion nozzle control device for a water motorcycle that can reduce the cost by reducing the cost of parts.
[0006]
[Means for Solving the Problems]
In order to achieve this object, the invention according to claim 1 of the present invention includes a rheostat whose resistance value changes in conjunction with a change in the angle of the propulsion nozzle of a water motorcycle, the resistance value of the rheostat and the trim meter itself . A trim meter that displays the propulsion nozzle angle by comparing the internal resistance value, a control circuit that controls the actuator that changes the propulsion nozzle angle, and a power supply that can supply a constant voltage to the trim meter and control circuit A propulsion nozzle control device for a water motorcycle comprising a circuit, wherein the control circuit stops the operation of the actuator when the output voltage of the rheostat exceeds an upper limit value or less than a lower limit value. When the neutral switch used for the reverse movement of the water motorcycle is set to reverse, The output voltage of the serial Leo stud is characterized in that to operate the actuator so as to be between the upper and lower limit values.
[0007]
With this configuration, when the vertical angle of the propulsion nozzle changes due to manual operation by the occupant, the resistance value of the rheostat changes, and the trim meter is supplied with a constant voltage from the resistance value change and the power stabilization circuit. predetermined voltage due to the internal resistance value of is inputted to the control circuit as the output voltage of Leo stud. The control circuit stops the operation of the actuator when the output voltage of the rheostat exceeds a preset upper limit value or falls below a lower limit value .
[0008]
The control circuit is set so that when the neutral switch that reverses the water motorcycle is set , the actuator operates according to the output voltage of the rheostat and the output voltage is between the upper and lower limits. And stabilize the hull when reversing. Since an inexpensive rheostat is used as an angle detector for detecting the angle of the propulsion nozzle, the cost of parts can be reduced and the cost of the propulsion nozzle control device can be reduced.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.
1 to 5 show an embodiment of a propulsion nozzle control device for a water motorcycle according to the present invention, FIG. 1 is an arrangement diagram showing the arrangement state of the propulsion nozzle control device with respect to the hull, and FIG. 2 is an illustration of the propulsion nozzle control device. FIG. 3 is a basic block diagram, FIG. 3 is a circuit diagram thereof, FIG. 4 is a diagram showing a state of each part of the control circuit, and FIG. 5 is a timing chart thereof.
[0010]
In FIG. 1, a water motorcycle 1 includes a jet propulsion device 3 mounted on the stern bottom of a hull 2 and a propulsion nozzle control device 5 (control device 5) that controls the vertical angle of the propulsion nozzle 4 of the jet propulsion device 3. ). The jet propulsion unit 3 has a water suction port 6 opened to the stern bottom, and an impeller shaft 9 connected to the engine 8 is rotatably disposed in a flow path 7 formed in the stern direction from the opening. Yes. The propulsion nozzle 4 is provided at the rear end of the flow path 7 and swings in the vertical direction around a horizontal axis extending in the lateral direction, and swings in the horizontal direction following the operation of the operation handle 10. It is configured.
[0011]
The operation handle 10 is disposed above the center of the hull 2, and a cockpit 11 is formed behind the operation handle 10. A trim switch that adjusts the vertical position of the propulsion nozzle 4 as described later and a watercraft 1 is used for the reverse movement at a front portion of the cockpit 11 at a position where the operator can easily operate while holding the operation handle 10. A switch 12 such as a neutral switch is disposed, and a trim meter 13 that displays the vertical angle of the propulsion nozzle 4 is disposed at a position that is easy for the operator to see.
[0012]
Further, in the front inside of the hull 2, a rheostat 15 that detects the vertical angle of the propulsion nozzle 4 of the jet propulsion machine 3, a control circuit 16 that processes a detection signal from the rheostat 15, and a control circuit 16 A trim motor 17 or the like that is operated by a control signal and constitutes an actuator is disposed.
[0013]
The rotation axis of the rheostat 15 is coupled to a drive shaft (or gear box) of the trim motor 17 connected to the propulsion nozzle 4 of the jet propulsion machine 3 by a wire 18 by a coupling member (not shown). As a result, the vertical oscillation of the propulsion nozzle 4 is transmitted to the rotating shaft of the trim motor 17 via the wire 18, and the resistance value of the rheo stud 15 changes in accordance with the change of the rotating shaft. .
[0014]
FIG. 2 shows a basic block diagram of the control device 5 according to the present invention. The control circuit 16 of the control device 5 includes a control circuit 21, a relay circuit 22, and a power supply stabilization circuit 23, and the control circuit 21 includes a trim that constitutes the rheostat 15, the trim meter 13, and the switches 12. The up switch 24, the trim down switch 25, the neutral switch 26, the relay circuit 22, and the power stabilization circuit 23 connected to the battery 57 are connected, and the trim circuit 17 is connected to the relay circuit 22.
[0015]
FIG. 3 shows a specific circuit diagram of the control device 5, which will be described below. The control circuit 16 of the control device 5 includes six IC1 to IC6 composed of comparators, one IC7 composed of, for example, a D flip-flop, four IC8 to IC11 composed of a NOR circuit, and 2 composed of an AND circuit. Each IC12, IC13, and the like are included.
[0016]
One input of IC1 to IC3 and the other input of IC4 are connected to a terminal T1 to which the rheostat 15 of the control circuit 16 is connected via resistors 27 and 28 connected in series. A connection point between the series-connected resistors 27 and 28 is connected via a diode 29 to a +10 V output terminal of the power supply stabilization circuit 23 (hereinafter, this output terminal is referred to as a power supply B2). A trim meter 13 is connected between the terminal T1 and the power source B2.
[0017]
Therefore, since one end of the rheostat 15 is grounded, the voltage of + 10V supplied to the trim meter 13 from the power stabilization circuit 23 is the resistance value of the internal resistance 13a of the trim meter 13 and the resistance of the rheo stud 15. And the voltage is output to the ICs 1 to 4 via the resistors 27 and 28. Since the output voltage of the trim meter 13 has a constant resistance value of the internal resistor 13a, the voltage value changes depending on the resistance value of the rheostat 15, and this voltage value represents the vertical angle of the propulsion nozzle 47. Will be.
[0018]
The other input of the IC 1 is connected to a connection point of a resistor 30 connected to the power source B 2 and generating a reference voltage (upper limit value) of, for example, 4.3 V and a grounded resistor 31. A connection point of resistors 32 and 33 connected in series is connected to the other input of the IC 3, the resistor 32 is grounded, and the resistor 33 is connected to the power source B 2 via the resistor 34. A connection point between the resistor 33 and the resistor 34 is connected to one input of the IC 4. Reference voltages of 3.3 V and 3.6 V, for example, are generated by the resistors 32 to 34 connected in series.
[0019]
The other input of the IC 2 is connected to a connection point of a resistor 35 connected to the power source B 2 and generating a reference voltage (lower limit value) of 1.2 V, for example, and a grounded resistor 36. One input of IC5 is connected to the output of IC3 and IC4 via resistors 37 and 38, and the other input is connected to the power source B2 and a resistor 46 which generates a reference voltage of, for example, 7.5 V and a grounded resistor It is connected to 47 connection points. The output of this IC5 is connected to the reset terminal R of IC7.
[0020]
The output of the IC 6 is connected to the clock pulse terminal (CLK terminal) of the IC 7, and one input of the IC 6 is connected to one contact of the neutral switch 26 through the resistor 56, the diode 39 and the resistor 40. ing. The connection point between the resistor 56 and the diode 39 is connected to the power source B2 via the resistor 41, and the other contact of the neutral switch 26 is grounded. The neutral switch 26 is turned on when traveling forward and turned off when traveling backward.
[0021]
One output of IC7 (referred to as output 1) is connected to the inputs of IC10 and IC11, and the other output (inverted output of output 1 and referred to as output 2) is connected to the inputs of IC8 and IC9. The other input of IC8 is connected to the output of IC3, and the other input of IC9 is connected to the output of IC4. The outputs of IC8 and IC9 are connected to the inputs of IC12 and IC13 via diodes 42 and 43, respectively.
[0022]
The other input of the IC 10 is connected to one contact of the trim-up switch 24 via the resistors 48 and 49 and the diode 50 connected in series, and the resistors 51 and 52 and the diode connected in series are connected to the input of the IC 11. It is connected to one contact of the trim down switch 25 through 53. The other contacts of the trim up switch 24 and the trim down switch 25 are shared and grounded.
[0023]
The trim-up switch 24 and the trim-down switch 25 are, for example, seesaw switches and are set so that only one of them is turned on. When the trim up switch 24 is turned on, the “L” signal is input to the IC 10, and when the trim down switch 25 is turned on, the “L” signal is input to the IC 11.
[0024]
The output of I C10 and IC11 is connected to the input of the IC 12, IC 13 via the diode 44 and 45, the output of IC1, IC2 is connected to the other input of the IC 12, IC 13. The outputs of the IC 12 and IC 13 are connected to the relay circuit 22 via resistors 54 and 55.
[0025]
The relay circuit 22 has two relay 58, 59 and transistors 60 and 61 for the relay driving resistance 54, 55 is connected to the base of the transistor 60 and 61, relays the collector of the transistor 60 and 61 The coils 58a and 59a of 58 and 59 are connected. The common contact of the relays 58 and 59 is connected to the trim motor 17 composed of a DC motor capable of forward and reverse rotation, one movable contact is grounded, and the other movable contact is connected to the plus terminal of the battery 57. .
[0026]
On the other hand, the power stabilization circuit 23 has an IC 14 composed of a three-terminal regulator, and the positive terminal of the battery 57 is connected to the input terminal of the IC 14 via a diode 62. Electrolytic capacitors 63 and 64 having one end grounded are connected to the input terminal and output terminal of the IC 14, and the voltage of +10 V described above is supplied to the control circuit 21 and the trim meter 13 from the output terminal. The control circuit 16 including the control circuit 21, the relay circuit 22, and the power supply stabilization circuit 23 is formed on a single printed board.
[0027]
4 shows the output state (High or Low) of IC1 to IC5 when the output voltage V1 of the rheostat 15 is changed in the control circuit 16, and the voltage at one input terminal a (see FIG. 3) of the IC5. It is a figure which shows Va. As is apparent from this figure, when the output voltage V1 of the rheostat 15 is in the range of 1.1V to 4.3V, the output of IC1 becomes “H” and the trim up switch 24 is turned on. The output becomes “H” and the output of the IC 12 also becomes “H”, a collector current flows through the transistor 60, and the transistor 60 is turned on. When the transistor 60 is turned on, the relay 58 is actuated to rotate the trim motor 17 in the forward direction and raise the propulsion nozzle 4.
[0028]
When the propulsion nozzle 4 rises and the output voltage V1 of the rheostat 15 becomes 4.4 V or higher, the output of the IC1 becomes “L” and the output of the IC12 also becomes “L”. The relay 58 is turned off and the trim motor 17 is automatically stopped.
[0029]
Further, when the trim down switch 25 is turned on, the same operation as described above is performed. That is, when the trim down switch 25 is turned on, the output of the IC 11 becomes “H”, and the output of the IC 13 also becomes “H”, the collector current flows through the transistor 61 and the transistor 61 is turned on. When the transistor 61 is turned on, the relay 59 is actuated to reverse the trim motor 17 and lower the propulsion nozzle 4.
[0030]
When the propulsion nozzle 4 is lowered and the output voltage V1 of the rheostat 15 becomes 1.1 V or less, the output of the IC 2 is “L” and the output of the IC 13 is also “L”. The relay 59 is turned off and the trim motor 17 is automatically stopped.
[0031]
That is, the control circuit 16 controls the trim motor 17 so that it does not rotate any more when the output voltage V1 of the rheostat 15 exceeds the upper limit value or less than the lower limit value .
[0032]
Further, when the neutral switch 26 is OFF, the control circuit 16 makes an AUTO operation state and performs trim adjustment to control the trim motor 17 and set the output voltage V1 within a certain range.
[0033]
That is, when the output voltage V1 of the rheostat 15 is between 1.1 and 3.2 V, it is determined that the position of the propulsion nozzle 4 is low, and the output of the IC 8 is “H”, so the output of the IC 12 is also “H”. The relay 58 of the relay circuit 22 is activated and the trim motor 17 is rotated forward (referred to as AUTO operation) to raise the propulsion nozzle 4.
[0034]
Further, when the output voltage V1 is between 3.3V and 3.6V, it is determined that the propulsion nozzle 4 is in the neutral position, and the outputs of IC8 and IC9 are “L”. The trim motor 17 does not rotate without operating 59 (referred to as AUTO operation stop), and the propulsion nozzle 4 also stops at that position.
[0035]
Further, when the output voltage V1 is between 3.7V and 4.4V, it is determined that the position of the propulsion nozzle 4 is high, and the output of IC9 becomes “H”, so the output of IC13 also becomes “H”, and the relay circuit 22 The relay 59 is operated, the trim motor 17 is reversely rotated (AUTO operation), and the propulsion nozzle 4 is lowered. The voltage Va at point a is set to 10 V when the position of the propulsion nozzle 4 is in the neutral position, and to 5 V when the position is low and high.
[0036]
FIG. 5 is a timing chart showing the operation of IC5 to IC7 with respect to the on / off operation of the neutral switch 26. As is apparent from this figure, when the neutral switch 26 is in the forward (ON) state, the output 1 of the IC 7 becomes “L” after the engine start time t1 has elapsed, and manual operation becomes possible. Output 2 becomes “H” and the AUTO operation is disabled.
[0037]
Further, when the neutral switch 26 is reverse (OFF) and the IC 6 is “H”, the manual operation is disabled during the time t2, and the AUTO operation is enabled. Within this time t2, the propulsion nozzle 4 performs an AUTO operation in a predetermined direction at a predetermined angle, and trim adjustment is performed.
[0038]
As described above, in the control device 5 of the above embodiment, the vertical position of the propulsion nozzle 4 is detected by the change in the resistance value of the rheostat 15, and the control circuit 16 of the control device 5 detects the propulsion nozzle 4 based on the detection result. In order to control the upper limit and the lower limit position, a part necessary for angle detection can be formed by one inexpensive part called rheostud 15.
[0039]
Further, only a constant voltage (+10 V) is supplied to the trim meter 13 from the power supply stabilization circuit 23, and the resistance value change ( change in output voltage) of the rheostat 15, that is, the change in the vertical angle of the propulsion nozzle 4. Can be displayed on the trim meter 13, and a dedicated meter control circuit 103 for displaying on the trim meter 13 as in the prior art becomes unnecessary. For these reasons, the parts cost of the control device 5 can be reduced, and the cost of the control device 5 itself can be reduced.
[0040]
Further, since the voltage supplied to the trim meter 13 and the control circuit 16 is a stable power supply of +10 V obtained by the power supply stabilization circuit 23, the indication accuracy of the pointer of the trim meter 13 can be improved and the control can be performed. The operation of the circuit 16 can be stabilized, and the operation of the control device 5 can be performed with high accuracy. Further, since the control circuit 21, the relay circuit 22 and the power supply stabilization circuit 23 constituting the control circuit 16 are formed on one printed circuit board, the circuit mounting density can be increased and the manufacturing cost can be reduced. As a result, a highly reliable control device 5 can be obtained.
[0041]
In the above embodiment, a constant voltage of +10 V is supplied to the trim meter 13 and the control circuit 16 (control circuit 21) by the power supply stabilization circuit 23. However, the present invention is not limited to this. For example, an appropriate constant voltage may be supplied according to the characteristics of the rheostat 15 used and the components used in the control circuit 16.
[0042]
Further, the reference voltage supplied to one input of IC1 to IC5 constituting the comparator is not limited to the above-described embodiment, and other appropriate voltage values can be used. Furthermore, the overall configuration of the control device 5 and the control circuit 16 in the above embodiment, the arrangement position of the control device 5 and the like with respect to the hull 2 are examples, and various changes can be made without departing from the scope of the present invention. Needless to say.
[0043]
【The invention's effect】
As described above in detail, according to the first aspect of the invention, a rheostat, which is an inexpensive component, can be used for detecting the vertical angle of the propulsion nozzle, and a meter control circuit dedicated to the trim meter, etc. There is no need to provide a part, and the cost of parts of the propulsion nozzle control device can be reduced, and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a layout diagram showing an example of an arrangement state of a propulsion nozzle control device for a water motorcycle according to the present invention with respect to a hull. FIG. 2 is a basic block diagram of the propulsion nozzle control device. FIG. 3 is a circuit diagram thereof. [Fig. 5] Fig. 5 is a timing chart showing the state of each part of the control circuit. [Fig. 6] [Fig.
1 .... Water motorcycle 2 .... Hull 3 .... Jet propulsion machine 4 .... Propulsion nozzle 5 .... Propulsion nozzle Control device 13 ... Trim meter 15 ... Rheostad 16 ... Control circuit 17 ... Trim motor 21 ... Control circuit 22 ...・ ・ ・ ・ Relay circuit 23 ・ ・ ・ ・ ・ ・ Power stabilization circuit 24 ・ ・ ・ ・ ・ ・ Trim-up switch 25 ・ ・ ・ ・ ・ ・ Trim-down switch 26 ・ ・ ・ ・ ・ ・ Neutral switch

Claims (1)

A trim that displays the angle of the propulsion nozzle by comparing a rheostad whose resistance changes in response to a change in the angle of the propulsion nozzle of a water motorcycle, and the resistance of the rheostad and the internal resistance of the trim meter itself. A propulsion nozzle control device for a water motorcycle comprising a meter, a control circuit that controls an actuator that changes an angle of the propulsion nozzle, and a power stabilization circuit that can supply a constant voltage to the trim meter and the control circuit. And
The control circuit stops the operation of the actuator when the output voltage of the rheostat exceeds an upper limit value or less than a lower limit value, and a neutral switch used for reverse travel of the water motorcycle is moved backward. The propulsion nozzle control device for a water motorcycle , wherein when set, the actuator is operated so that the output voltage of the rheostat is between the upper limit value and the lower limit value .

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