JPH0626478Y2 - Outboard motor - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an outboard motor having a structure in which an alarm buzzer informs an abnormal state of an engine or the like.

[Prior Art] A conventional outboard motor of this type, as shown in FIGS. 4 to 6, has a main switch 1 for controlling start / stop of an engine and on / off of power supply to various devices. Have. The main switch 1 has a power source input terminal 1a, a power source output terminal 1b, and a starter motor starting terminal 1c.
In the OFF position as shown in the figure, the power input terminal 1a is not connected to any of the terminals 1b and 1c as shown in FIG. 6 (A), and the key 2 is turned to the power ON position for switching. As shown in FIG. 6 (B), the connection between the power input terminal 1a and the power output terminal 1b is turned on, and the key 2 is turned to the engine start position to perform switching, as shown in FIG. 6 (C). The power input terminal 1a, the power output terminal 1b, and the starter motor start terminal 1c are all turned on.

The positive electrode of the battery 3 is connected to the power input terminal 1a. The negative electrode of the battery 3 is grounded. Further, the switch portion 4 of the starter solenoid 4 is connected to the positive electrode of the battery 3.
One end of the electric path of the starter motor 5 is grounded via a. The other end of the electric path of the starter motor 5 is grounded. The switching motor 6a of the neutral switch 6 is connected to the starter terminal 1c of the starter motor.

The neutral switch 6 has a structure in which the switching connector 6a is switched by the operation of a control lever for remote control of a clutch for switching the forward-neutral-reverse propulsion direction. Switching connector 6 in neutral position
a is connected to the fixed contact 6b. The fixed contact 6a is connected to one end of the coil portion 4b of the starter solenoid 4. The other end of the coil portion 4b is grounded.

At the power output terminal 1b, the oil level sensor 7 of the outboard motor,
One end side of each sensor switch 7a, 8a, 9a such as the engine cooling water pressure sensor 8 and the engine overheat sensor 9 is connected via a common electric path 10. The other end of each sensor switch 7a-9a is grounded. When each sensor 7-9 detects an abnormality, its sensor switch 7a
It has a structure that operates so as to turn on ~ 9a.
An alarm buzzer 11 is connected in the middle of the electric circuit 10.

In such an outboard motor, at the start of operation, the control lever is first set to the neutral position and the key 2 of the main switch 1 is turned from the off position to the power on position to perform the first switching.

By shifting the control lever to the neutral position,
The switching connector 6a of the neutral switch 6 is the fixed contact 6
connected to b.

Next, by switching the main switch 1 to the power-on position described above, the connection between the power input terminal 1a and the power output terminal 1b is turned on. As a result, power is supplied to each of the sensor switches 7a to 9a via the alarm buzzer 11.

When the engine of the outboard motor is not rotating, the cooling water pump connected to the engine main shaft is not operating, so the cooling water is not supplied in the engine cooling water jacket, it is empty, and the water pressure is Therefore, the sensor switch 8a of the engine cooling water pressure sensor 8 is turned on,
The alarm buzzer 11 will be sounded.

Next, the key 2 of the main switch 1 is turned from the power-on position to the engine start position to perform the second switching. As a result, the power input terminal 1a, the power output terminal 1b, and the starter motor starting terminal 1c are turned on, and the coil portion 4b of the starter solenoid 4 is energized from the starter motor starting terminal 1c through the neutral switch 6 and the coil portion 4b. The element switch portion 4a is turned on by the excitation of, the electric power is supplied to the starter motor 5, and the engine of the outboard motor is started. Therefore, the aforementioned cooling water pump is operated, cooling water is supplied into the engine cooling water jacket, the water pressure rises, and the sensor switch 8 of the engine cooling water pressure sensor 8
a is turned off, and the alarm buzzer 11 does not sound.

In such an outboard motor, when the engine is started, power is not supplied to the starter motor 5 unless the control lever is in the neutral position for safety reasons. The neutral switch 6 realizes this. is there.

[Problems to be Solved by the Invention] As described above, in the conventional outboard motor, every time the engine is started, the alarm buzzer is always provided between the time when the main switch 1 is switched to the power-on position and the time when the engine is started. No. 11 continues to ring, and there is a problem that it feels painful to the ear. Further, in the conventional structure, any one of the sensors 7 to 9 detects an abnormality of the engine and the alarm buzzer 11 is detected.
The main switch 1 has to be turned off in order to stop the sound when the buzzer sounds, which causes a problem that all devices and instruments stop.

The purpose of the present invention is to prevent the alarm buzzer from sounding when the main switch is switched to the power-on position at the time of engine start-up, and even if the alarm buzzer sounds due to an abnormality in the engine etc., simply return the control lever to the neutral position. It is to provide an outboard motor that can stop the alarm buzzer from sounding without stopping the engine.

[Means for Solving Problems] To explain the configuration of the present invention for achieving the above object, the present invention turns on between a power input terminal and a power output terminal by switching to a power-on position, A main switch that turns on all of the power input terminal, the power output terminal, and the starter motor start terminal by switching to the engine start position, a battery connected to the power input terminal, and a starter solenoid switch for the battery. The control lever for remote control of the starter-neutral-reverse propulsion direction and the starter motor connected via the control unit are driven to be switched. Position and when the main switch is switched to the engine start position, the main A neutral switch for energizing the coil part of the starter solenoid via a switch to control energization to turn on the switch part, and a main switch for supplying power to a detected part such as an engine. In an outboard motor comprising a sensor that turns on a sensor switch when an abnormality occurs, and an alarm buzzer that is connected to an electric path from the main switch to the sensor switch and that issues an alarm when the sensor switch is turned on, The neutral switch is turned on when the control lever is in the forward or reverse position, and is turned off otherwise, and the second switch is turned on when the control lever is in the neutral position and turned off otherwise. A switch section, wherein the first switch section and the power output terminal The second switch part is connected between the starter solenoid and the coil part of the starter solenoid, and the sensor switch starts the starter motor through the alarm buzzer. It is connected to the terminal.

[Operation] With this configuration, when the main switch is switched to the power-on position and the power input terminal and the power output terminal are turned on, each sensor switch is not energized, and therefore the alarm buzzer does not sound.

Further, when the alarm buzzer sounds during operation, the alarm buzzer can be stopped without stopping other devices by setting the control lever to the neutral position.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. The parts corresponding to those in FIGS. 4 to 6 are given the same reference numerals.

In this embodiment, the neutral switch 6 includes a switching connector 6a and first and second fixed contacts 6b and 6c,
The switching connector 6a and the first fixed contact 6b constitute a first switch portion 6A, and the switching connector 6a and the second fixed contact 6 are formed.
The one having a structure in which the second switch section 6B is constructed with c is used.

The first switch portion 6A of the neutral switch 6 has a control lever 12 for performing remote control of a clutch for switching the forward-neutral-reverse propulsion direction, as shown in FIG. Alternatively, it is controlled so that it is turned on when the retreat position 12C is set, and is turned off otherwise.

Further, the second switch portion 6B is the control lever 1
2 is turned on when the neutral position 12A is set as shown in FIG. 2, and is turned off otherwise.

The first switch section 6A is connected between the power output terminal 1b of the main switch 1 and the starter motor start terminal 1c, and the second switch section 6B is the starter motor start terminal 1c of the main switch 1 and the coil section of the starter solenoid 4. Four
It is connected to one end of b. Further, each of the sensors 7 to 9 is connected to the starter motor starting terminal 1c via the alarm buzzer 11 in the electric path 10.

The control lever 12 is usually provided in a remote control box installed adjacent to the driver's seat, and the clutch lever of the outboard motor is operated via a remote control cable for operating the control lever 12, whereby The clutch is designed to be operated.

In such an outboard motor, at the start of operation, the control lever 12 is set to the neutral position 12A and the key 2 of the main switch 1 is turned from the off position to the power on position as described above. By shifting the control lever 12 to the neutral position 12A, the neutral switch 6
The switching connector 6a is connected to the second fixed contact 6c, and the second switch section 6B is turned on.

Next, by switching the main switch 1 to the power-on position, the power between the power input terminal 1a and the power output terminal 1b is turned on. In this state, power is not supplied from the power output terminal 1b to other devices. Therefore, even if the sensor switch 8a of the engine cooling water pressure sensor 8 is turned on, the electric power is not supplied to the electric path 10, and the alarm buzzer 11 does not sound.

Next, the key 2 of the main switch 1 is turned from the power-on position to the engine start position to turn on the power input terminal 1a, the power output terminal 1b, and the starter motor starting terminal 1c. As a result, the coil portion 4b of the starter solenoid 4 is energized via the second switch portion 6B of the neutral switch 6, the switch portion 4a is turned on, the starter motor 5 is started, and the engine enters the operating state. At this time, an alarm sounds temporarily by turning on the sensor switch 8a of the engine cooling water pressure sensor 8 until the water pressure in the engine cooling water jacket rises. It doesn't.

When the engine start is completed and the key 2 of the main switch 1 is released, the key 2 returns from the engine start position to the power-on position and disconnects the starter motor start terminal 1c from the power input terminal 1a. As a result, the power supply to the starter solenoid 4 is stopped, the switch portion 4a is turned off, and the power supply to the starter motor 5 is stopped.

Thereafter, the control lever 12 is shifted to the forward movement position 12B or the backward movement position 12C as shown in FIG. At this time, in the neutral switch 6, the switching connector 6a is connected to the first fixed contact 6b, the first switch portion 6A is turned on, and the second switch portion 6B is turned off. In this state, power is supplied to each of the sensors 7 to 9 via the first switch portion 6A of the neutral switch 6. Therefore, when any of the sensor switches 7a to 9a is turned on during operation and the alarm buzzer 11 sounds, when the control lever 12 is returned to the neutral position, the switching connector 6a separates from the first fixed contact 6b. Power is not supplied to the alarm buzzer 11, and the sound can be stopped. However, since power is being supplied from the power output terminal 1b, the power supply to other devices is maintained.

Note that the neutral 6 may not be switched and connected by the common switching connector 6a, but may be switched and connected by the switching connectors independent of each other.

[Effect of the Invention] As described above, in the outboard motor of the present invention, each sensor switch is energized when the main switch is switched to the power-on position and the power input terminal and the power output terminal are turned on. Therefore, it is possible to prevent the alarm buzzer from ringing when the main switch is switched to the power-on position before starting the engine. Further, according to the present invention, even if the alarm buzzer sounds due to an abnormality of the engine or the like, the alarm buzzer can be stopped without stopping the engine simply by returning the control lever to the neutral position. Furthermore,
According to the present invention, the number of parts is the same as the conventional one, and there is an advantage that the configuration can be superior to the conventional one.

[Brief description of drawings]

FIG. 1 is an electric circuit diagram showing an embodiment of an outboard motor according to the present invention, and FIGS. 2 and 3 are explanatory diagrams showing operation states of a neutral switch and a control lever used in this embodiment. FIG. 4 is an electric circuit diagram of a conventional outboard motor, FIG. 5 is a front view of a main switch, and FIGS. 6 (A), (B), and (C) are explanatory views of three kinds of operating states of the main switch. 1 ... Main switch, 1a ... Power input terminal, 1b ...
… Power output terminal, 1c …… Cell motor starting terminal, 2 ……
Key, 3 ... battery, 4 ... starter solenoid, 4
a ... switch part, 4b ... coil part, 5 ... cell motor, 6 ... neutral switch, 6A, 6B ... first and second switch parts, 7-9 ... sensor, 7a-9a
...... Sensor switch, 10 ...... electric circuit, 11 ...... warning buzzer, 12 ...... control lever.

Claims (1)

[Scope of utility model registration request] 1. A power source input terminal and a power source output terminal are turned on by switching to a power source on position, and a power source input terminal, a power source output terminal and a starter motor starting terminal are switched on by switching to an engine start position. A main switch that is turned on together, a battery that is connected to the power input terminal, a starter motor that is connected to the battery through a switch part of a starter solenoid, and a clutch that performs a forward / neutral / reverse propulsion direction switching operation. When the control lever is in the neutral position and the main switch is switched to the engine start position, the starter solenoid is switched by operating the control lever for remote control. Energize the coil part of the From the main switch to the sensor switch, and a sensor that is supplied with power via the main switch and that turns on the sensor switch when an abnormality is detected in a detected location such as an engine. In an outboard motor equipped with an alarm buzzer that is connected to an electric circuit and issues an alarm when the sensor switch is turned on, the neutral switch is turned on when the control lever is in the forward or backward position and is otherwise. It has a first switch part that is turned off and a second switch part that is turned on when the control lever is in the neutral position and is turned off otherwise, the first switch part including the power output terminal and the starter motor. The second switch section is connected between the starting terminal and the starter terminal. Is connected between the coil portion of the terminal and the starter solenoid, the outboard motor wherein the sensor switch, characterized in that connected to the starter motor starter terminal through the alarm buzzer.