JPS644597Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a headlamp lighting device for a motorcycle that detects engine operation and automatically turns on the headlamp.

(Prior art and its problems) In order to improve the visibility of motorcycles while driving, some countries require headlamps to be turned on even during daytime driving. Accident prevention measures that alert people to the presence of motorcycles are attracting attention. However, since the battery capacity of a motorcycle is relatively small, if the headlight remains on even when a large current is required to start the engine, there may be a lack of power and the motorcycle may not be able to start smoothly.

Therefore, a headlamp lighting device that prevents the lamp from automatically turning on when the engine starts is effective. This kind of lighting device was already developed in 1973.
It is stated in Publication No. 80994. However, with this configuration, due to recent improvements in the output capacity of charging generators, when trying to start the engine with the starter motor, it is easy to generate enough power to close the lighting circuit through the rotation of the starter motor. Otherwise, the head lamp lights up before the engine has finished starting, causing a problem in which sufficient power cannot be supplied to the starter motor.

Yet another conventional headlamp lighting device is known as described in Japanese Utility Model Publication No. 41661/1983. However, with that device, the head lamp turns off only when the starter motor is operating, and in other conditions, the head lamp continues to light as long as the main switch is on, regardless of engine operation. There is a problem in which the headlight lights up between turning it on and starting the starter motor, wasting battery power, which has a big impact on engine operation, especially in cold weather.

In this invention, the head lamp is automatically turned on when the engine is running, but remains off from the time the main switch is turned on until the starter motor completes operation, so that the head lamp does not have a negative effect on the starter motor's operation. It is an object of the present invention to provide a headlamp lighting device that does not waste battery power.

(Means for Solving the Problems) In order to solve the above problems, the motorcycle headlamp lighting device of the present invention includes a magnetic switch having an opening/closing contact interposed between the battery and the starter motor; A starter switch is interposed in series with the main switch between the battery and the drive coil of the magnetic switch and is opened and closed based on manual operation, and a starter switch is provided in series with the main switch between the battery and the head lamp. A relay circuit for lamp lighting control having an intervening opening/closing contact is provided, one end of the drive coil of the relay circuit is connected to a connection point between the starter switch and the drive coil of the magnetic switch, and A first whose anode is connected to the output end of a charging alternator driven by the engine to charge the battery, and whose cathode is connected to the other end of the drive coil of the relay circuit.
a diode, an anode connected to a connection point between the switching contact of the relay circuit and the headlamp, and a cathode connected to a connection point between the cathode of the first diode and the other end of the drive coil of the relay circuit; 2 diodes, and the minimum operating current of the magnetic switch is determined by the current flowing from the alternator to the drive coil of the magnetic switch via the first diode and the drive coil of the relay circuit; The current is set to be larger than the current flowing from the battery to the drive coil of the magnetic switch via the main switch, the switching contacts of the relay circuit, the second diode, and the drive coil of the relay circuit, and The minimum operating current of the relay circuit is determined by the current generated across the drive coil of the relay circuit when the starter switch is closed due to the difference between the voltage from the battery and the voltage from the alternator. is also set to a large current.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

FIG. 1 is a circuit diagram of a motorcycle headlamp lighting device according to an embodiment of the present invention, and 1 is a battery.The negative terminal of the battery 1 is grounded, and the positive terminal is connected to one end of a manual main switch 2 and It is connected to one end of the switching contact 3. The other end of the opening/closing contact 3 is connected to a starter motor 4, and the other end of the main switch 2 is connected to a self-holding circuit 5 and a starter switch circuit 6. The starter switch circuit 6 has a configuration as shown in FIG. That is, the other end of the main switch 2 is connected to one end of a manual starter switch 7 and one end of a switching contact 8, and the other end of the starter switch 7 is grounded via a drive coil 9. The other end 8a of the switching contact 8 is grounded via the drive coil 10 shown in FIG.
is connected to the self-holding circuit 5. The self-holding circuit 5 has a configuration as shown in FIG. That is, the other end of the switching contact 11, one end of which is connected to the other end of the main switch 2 (FIG. 1), is connected to the headlamp 12.
A second diode 1 for self-holding is installed at the connection point with
3 anodes are connected. One end of the drive coil 14 that operates the opening/closing contact 11 is connected to the starter switch circuit 6 (FIG. 1) via a point A, and the other end of the drive coil 14 is connected to the cathode of the first diode 15 and the second diode 15. It is connected to the cathode of diode 13. first diode 15
The anode is a charging alternator 16 that is driven by an engine (not shown) to charge the battery 1.
connected to the output end of the The switching contact 8 and the drive coil 9 constitute a relay circuit 18 for the starter motor 4, and the switching contact 8 functions as a switch for the starter. Drive coil 10
A magnetic switch 17 for the starter motor 4 is constituted by the opening/closing contact 3 and the opening/closing contact 3. The headlamp 1 is operated by the opening/closing contact 11 and the drive coil 14.
Relay circuit 19 for lamp lighting control that drives 2
is configured.

Next, the operation will be explained.

(a) Turn on main switch 2 and press starter switch 7 (Fig. 2) to turn on relay circuit 18.
When turned ON, the opening/closing contact 8 is turned ON and the drive coil 10 is energized, the opening/closing contact 3 of the magnetic switch 17 is turned ON, and the starter motor 4 rotates.

(b) The engine is started by the rotation of the starter motor 4, and the alternating current generator 16 is directly connected to the engine.
AC voltage is generated.

(c) While the starter switch 7 is pressed (ON state), the potential at point A (Fig. 1) rises to approximately the battery voltage, and the voltage generated by the alternator 16 is at the potential at point A. Since the potential is almost the same as that of the current, a current higher than the minimum operating current does not flow through the drive coil 14, and the relay circuit 19 does not operate. Therefore, the headlamp 12 does not light up.

(d) When the engine starts and starter switch 7 is opened (OFF), magnetic switch 1
The opening/closing contact 3 of 7 is turned off, and the starter motor 4 is stopped.

(e) Since the potential at point A drops to approximately 0V, the output of the alternator 16 flows through the first diode 15 and the drive coils 14, 10, and the drive coil 14 of the relay circuit 19 for lamp lighting control The opening/closing contact 11 is turned on by being excited. Here, the magnetic switch 17 is set so as not to be activated by a small amount of current passing through the drive coil 10 and driving the drive coil 14 of the relay circuit 19.

(f) When the switching contact 11 turns ON, the headlamp 1 is turned on.
2, a current flows through it and lights it up.

(g) The current passing through the switching contact 11 is further
Since the drive coil 14 is excited through the diode 13, the switching contact 11 continues to be in the ON state. That is, since the output of the alternator 16 fluctuates due to the operation of a voltage regulator (not shown), a portion of the current that has passed through the switching contact 11 is diverted so that the relay circuit 19 functions stably. The signal is supplied to the drive coil 14 via the second diode 13.

(h) When the main switch 2 is turned OFF, the drive coil 14 is no longer excited and the self-holding circuit 5
returns to the state shown in Figure 3.

(Another Embodiment) FIG. 4 shows another embodiment, in which the starter switch circuit 6 may be constructed of only the starter switch 7. That is, when using the starter switch 7 having a relatively large capacity, the relay circuit 18 (FIG. 2) may be omitted. In this case, the starter switch 7 will function as a starter switch.

(Effect of the invention) As explained above, according to the invention, after the main switch 2 is turned on, while the starter motor 4 is being rotated by the starter switch 8 or 7, the starter switch 8 or 7 is turned on. voltage blocks the current from the alternator 16 and keeps the lamp lighting control relay circuit 19 OFF, and the alternator 16 is turned off only when the starter switch 8 or 7 is turned OFF after the engine is started.
The relay circuit 19 is turned on by the current from the engine, and the headlamp 12 is turned on, so when the engine is running, the headlamp 12 is automatically turned on.
The head lamp 12 remains off from when the main switch 2 is turned on until the operation of the starter motor 4 is completed, so that the head lamp 12 does not have a negative effect on the operation of the starter motor 4 and does not waste the power of the battery 1. There is an advantage that it disappears.

[Brief explanation of drawings]

Figure 1 is a circuit diagram of a headlamp lighting device for a motorcycle according to an embodiment of the present invention, Figure 2 is a circuit diagram of a starter switch circuit in the headlamp lighting device for a motorcycle, and Figure 3 is a circuit diagram of a headlamp lighting device for a motorcycle. FIG. 4 is a circuit diagram of a starter switch circuit in a headlamp lighting device for a motorcycle according to another embodiment. 1...Battery, 2...Main switch, 3
...Opening/closing contact, 4...Starter motor, 7...Starter switch (switch for starter), 8...
...Opening/closing contact (switch for starter), 10...
Drive coil, 11... Switching contact, 12... Head lamp, 13... Second diode, 14... Drive coil, 15... First diode, 16...
AC generator, 17...Magnetic switch, 1
9...Relay circuit.

Claims (1)

[Scope of utility model registration request] A magnetic switch having an opening/closing contact is interposed between the battery and the starter motor, and a magnetic switch is interposed in series with the main switch between the battery and the drive coil of the magnetic switch and opens/closes based on manual operation. A relay circuit for lamp lighting control having a switching contact interposed in series with the main switch is provided between the battery and the headlamp, and one end of the drive coil of the relay circuit is connected to the main switch. The anode is connected to the connection point between the starter switch and the drive coil of the magnetic switch, and is further connected to the output end of a charging alternator that is driven by the engine to charge the battery. a first diode having a cathode connected to the other end of the drive coil; an anode connected to a connection point between the switching contact of the relay circuit and the headlamp; and a first diode having a cathode connected to the other end of the drive coil; A second diode having a cathode connected to the other end is provided, and the minimum operating current of the magnetic switch is supplied from the alternating current generator through the first diode and the drive coil of the relay circuit. A current is applied to the drive coil of the magnetic switch through the main switch, the opening/closing contacts of the relay circuit, the second diode, and the drive coil of the relay circuit from the battery to the drive coil of the magnetic switch. The minimum operating current of the relay circuit is set to a larger current than the current to be energized, and the minimum operating current of the relay circuit is equal to the voltage from the battery generated across the drive coil of the relay circuit when the starter switch is closed. A headlamp lighting device for a motorcycle, characterized in that the current is set to be larger than the current due to the difference in voltage from the alternating current generator.