JPS6349427Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic headlamp lighting device that automatically turns on the headlamp of a motorcycle immediately after the engine is started.

In order to improve the safety of motorcycles while driving, some countries require headlamps to be turned on even during daytime driving, and the lighting of headlamps alerts other vehicles to the presence of the motorcycle to prevent accidents. measures 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 is a problem that there will be a lack of power and the motorcycle will 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.
Proposed in No. 80994. However, with this configuration, due to recent improvements in generator output capacity, when trying to start the engine with the starting motor, the rotation of the starting motor easily generates enough power to close the lighting circuit. There is a problem in which the head lamp lights up before the engine has finished starting, making it impossible to supply sufficient power to the starting motor. Japanese Utility Model Publication No. 55-41661 is known as yet another conventional headlamp lighting device. However, with that device, the head lamp would turn off only when the starting motor was activated.
Under other conditions, the headlights will continue to light as long as the main switch is on, regardless of engine operation, so the headlights will remain on between the time the main switch is turned on and the starting motor is activated. There is a problem where the light turns on and wastes battery power.
Particularly in cold weather, the influence on engine operation is large.

This invention has been developed in consideration of the above-mentioned problems.The headlamp turns on automatically when the engine is running, but remains off until the starting motor has finished operating after the main switch is turned on. It is an object of the present invention to provide a headlamp lighting device that does not have any adverse effects and does not waste battery power.The present invention will be explained below based on the drawings.

In Figure 1, battery 1 (e.g. 12V)
The negative terminal is grounded, and the positive terminal is connected to one end of a manual ignition switch 2 and one end of a magnetic switch contact 3, and is connected to a starting motor 4 via the magnetic switch contact 3. The field 4a of the motor 4 is made of a permanent magnet, and the other terminal of the motor 4 is grounded. The other end of the ignition switch 2 is connected to the self-holding circuit 5, and the switch 2 and the circuit 5
The starting switch circuit 6 is connected to the starting switch circuit 6. In the circuit 6, for example, as shown in FIG. 2, a manual starting switch 7 and a relay contact 8 are connected in parallel, and the other end of the switch 7 is grounded via a relay drive coil 9.
One end 8a of the relay contact 8 is connected to a magnetic switch driving coil 10 (coil 10) shown in FIG.
and contact 3 form a magnetic switch 17), and is branched at point A between circuit 6 and coil 10 and connected to self-holding circuit 5. In the self-holding circuit 5, a relay contact 11 whose one end is connected to the ignition switch 2 is connected to a headlamp 12, and a branch between the relay contact 11 and the lamp 12 is connected to a diode 13 in the forward direction. On the other hand, one end of the coil 14 that operates the relay contact 11 is connected to one end of the coil 10 of the magnetic switch 17 via point A, and the other end of the coil 14 is connected to the starter via a diode 15 in the opposite direction to the coil 14. It is connected to the contact 3 side terminal of the contact motor 4. Furthermore, coil 14
Diode 13 is branched between diode 15 and diode 15.
The contact 11 and the coil 14 form a relay 19.

Note that the coil 14 of the relay 19 is connected in series.
and the coil 10 of the switch 17, the resistance of the coil 14 is, for example, 100 to 120Ω, and the resistance of the coil 14 is, for example, 100 to 120Ω.
The zero resistance is, for example, 3 to 4 Ω. Therefore, while a current of about 0.1 A is sufficient to operate the relay 19, a current of 3 to 3 A is sufficient to operate the switch 17.
A current of about 4A is required, and there is a marked difference in the operating conditions of the two.

Next, the operation will be explained.

(a) When the ignition switch 2 is turned on and the starting switch 7 (Fig. 2) is pressed to turn it on, the relay contact 8 is turned on and the coil 10 is energized, and the magnetic switch contact 3 is turned on. The starting motor 4 rotates.

(b) When the engine starts due to the rotation of the motor 4, turn off the switch 7 (Fig. 2) to stop the power supply to the motor 4. At this time, since the motor 4 continues to rotate for a short period of time due to inertia even after the energization is stopped, it functions as a generator only during that period.

(c) Current ₁ generated by motor 4 passes through diode 15 and flows from coil 14 of relay 19 to coil 10. This causes relay 19 to
It turns on and the headlamp 12 lights up. At the same time, current ₂ flows through the diode 13 circuit.

(d) The relay 19 exhibits a self-holding function using the current ₂ , and is maintained in the ON state even if the starting motor 4 stops and the current ₁ disappears.
Therefore, the headlamp 12 continues to be lit.

(e) When the ignition switch 2 is turned off to stop the engine, the coil 14 is no longer excited, the self-holding circuit 5 is turned off, and the headlamp 12 is turned off.

If for some reason the engine stops and restarts with switch 2 turned on, it will operate as follows.

(a') Switch 7 (second
When you press ), voltage is applied to the coil 10, and the potential at point A increases. As a result, there is no potential difference between both ends of the coil 14 of the relay 19, so no current flows through the coil 14 and it is no longer excited.
Relay 19 is turned off.

(b') When the relay 19 is turned off, the headlamp 12 is turned off.

(c') At the same time, current flows through the coil 10, so the contact 3 turns ON, and the starting motor 4
is activated and the engine is started.

(d') If the engine operates, switch 7 (second
(Fig.) to OFF and stop motor 4. Even in this case, the motor 4 rotates for a short period of time due to inertia, so it functions as a generator, and thereafter operates in the same manner as in operations (c), (d), and (e) above.

As explained above, according to the present invention, the starting motor 4 that starts the engine, the relay 19 that operates with the current ₁ due to the inertia rotation of the starting motor 4 after the engine has started, and the relay 19
Since the engine has a headlamp 12 that lights up when the engine is operated, and a self-holding circuit 5 that keeps the relay 19 connected, the headlamp 12 lights up automatically when the engine is running, but it does not turn on until the ignition switch 2 is turned on. Starting motor 4
The headlamp 12 remains off until the operation of the starting motor 4 is completed, which has the advantage that the headlamp 12 does not adversely affect the operation of the starting motor 4 and that the power of the battery 1 is not wasted.

According to the above embodiment, even in the special case where the engine stops for some reason while the switch 2 is turned on while the engine is running, simply turning on the switch 7 to restart will cause the motor 4 to start rotating. The headlamp 12 automatically turns on.
At the same time, when switch 7 is turned OFF, lamp 12 is turned ON, so the power of battery 1 is not wasted.
Also, there will be no power shortage.

As another example, as shown in FIG.
(both shown in FIG. 2) may be omitted. Further, as another embodiment of the present invention, the effect of the present invention can be obtained even if one end of the coil 14 is not connected to the point A but is simply grounded.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a headlamp lighting device according to the present invention, and FIGS. 2 and 3 are different embodiments of a starting switch circuit. 4... Starting motor, 5... Self-holding circuit, 12... Head lamp, 19... Relay,
₁ ...Current.

Claims (1)

[Scope of utility model registration request] a starting motor that starts the engine;
A motorcycle characterized in that it has a relay that is activated by current generated by inert rotation of a starting motor after the engine is started, a head lamp that lights up when the relay is activated, and a self-holding circuit that maintains the relay in a connected state. Automatic headlamp lighting device.