JPH0245079Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device to prevent forgetting to turn off hazard lamps, and improves usability by disabling the buzzer that sounds when the hazard lamps are activated, but not when the engine is stopped. It is.

Vehicles such as automobiles have direction indicator lights (hereinafter referred to as turn signal lamps) on the front, rear, left and right sides of the vehicle body.
A hazard lamp circuit is installed that flashes at the same time to alert other vehicles. These hazard lamps (referring to the front, rear, left, and right turn signal lamps that flash due to a hazard circuit; the same applies hereinafter) are used mainly when a vehicle such as a car is forced to stop due to a malfunction in a place where stopping is prohibited. It is used to notify other vehicles of the situation.

This hazard lamp circuit is normally installed independently of the main switch circuit, so the operation to turn off the hazard lamps when starting after stopping is as follows:
The driver's attentiveness was the only thing to rely on, which caused the problem of forgetting to turn it off. Therefore, a circuit to prevent forgetting to turn off the light has been devised and put into practical use. However, conventional conventional ones only connected the buzzer in parallel with the flasher (interrupter), so regardless of the main switch, the buzzer would make an intermittent sound when the hazard lamps were activated, and the sound would not be heard by the occupants inside the car. In addition to being annoying to the ears, there was a problem in that the alarm's appeal as an abnormal alarm was weak.

The present invention was developed in view of this point, and the buzzer that sounds when the hazard lamps are activated does not operate when the engine is stopped. For this reason, the present invention provides a turn signal lamp circuit in which a turn signal relay is connected to a movable contact of a turn signal switch, and a turn signal lamp is connected to the left and right fixed contacts of this turn signal switch. The ignition switch connects the ignition terminal connected to the ignition circuit to the battery when the engine is turned on and when the engine starts, the flasher terminal whose connection changes depending on whether it is on or off, and the turn signal lamp circuit. A second flasher terminal is connected to a connection point between a turn signal relay and a movable contact of a turn signal switch, and a buzzer terminal is closed when turned on, and when turned on, the flasher terminal is connected to the battery. , simultaneously short-circuiting the movable contact and the left and right fixed contacts of the turn signal switch via a second flasher terminal,
A hazard switch is provided in which the flasher terminal is connected to the ignition terminal of the ignition switch when the switch is off, and the turn signal circuit is connected to the battery via the flasher terminal of the hazard switch and the ignition terminal of the ignition switch. A series circuit of a diode and a buzzer connected and oriented so that the positive terminal side of the battery becomes the anode side is connected to the ignition terminal of the ignition switch, the buzzer terminal of the hazard switch, and the second flasher terminal. The battery is connected to the battery.

Hereinafter, one embodiment of the present invention will be described with reference to FIG. 1. Reference numeral 1 denotes a main switch (ignition switch), which has a battery terminal 2, an accessory terminal 3, an ignition terminal 4, and a starter terminal 5. It shall be connected as shown in the OFF, ACC, ON, and START positions. A positive electrode side of a battery 7 is connected to a battery terminal 2 of the main switch 1 via a fuse 6. The negative electrode side of the battery 7 is connected to a vehicle body grounding circuit that uses a metal part of the vehicle body as an electric circuit.

A fuse 8 and an accessory load 9 are connected between the accessory terminal 3 and ground. A series circuit of a fuse 10 and an ignition circuit 11 and a series circuit of a fuse 12 and a safety circuit 13 are connected in parallel between the ignition terminal 4 and the ground. The safety circuit 13 is a safety circuit for a vehicle that is activated by energization, excluding turn signal lamps, and when the vehicle is a car, wipers and back clamps fall under this category. In the case of a two-wheeled vehicle, this includes the stop light and the horn. Between starter terminal 5 and ground,
A starter circuit 14 is connected.

15 is a hazard switch. The hazard switch 15 is provided with a battery terminal 16, a flasher terminal 17, a safety terminal 18, a left-turn side terminal 19, a second flasher terminal 20, a right-turn side terminal 21, and a buzzer terminal 22. Among these terminals, the flasher terminal 17 is connected to the battery terminal 16 side when the hazard switch 15 is on, and is connected to the safety terminal 18 side when the hazard switch 15 is off. Also hazard switch 1
The second flasher terminal 20 of No. 5 short-circuits the left-turn terminal 19, the right-turn terminal 21, and the buzzer terminal 22 when the hazard switch 15 is on, and is released from the short-circuit when the hazard switch 15 is off. The battery terminal 16 of the hazard switch 15 having such a configuration is connected to the battery terminal 2 of the main switch 1.
It is connected to the. One end of a turn signal relay 23 is connected to the flasher terminal 17.
The other end of the turn signal relay 23 is connected to a movable contact 25 of a turn signal switch 24 and a second flasher terminal 20. When operated, the movable contact 25 of the turn signal switch 24 contacts either a left-turn side terminal 28 or a right-turn side terminal 29, which will be described later, and when not operated, it does not contact either of them. Safety terminal 1
8, one end of the safety circuit 13 is connected, and one end of the series circuit of the diode 26 and the buzzer 27 is connected so that the positive electrode side of the battery 7 (the ignition terminal 4 side of the ignition switch 1) becomes the anode side. connected and oriented to. The other end of this series circuit is the hazard switch 15.
It is connected to the buzzer terminal 22 of. Due to this connection, in the series circuit of the buzzer 27 and the diode 26, the direction from the safety circuit 13 side to the buzzer terminal 22 becomes the forward direction. The left turn side terminal 19 is connected to the left turn side terminal 28 of the turn signal switch 24. A turn signal lamp 3 is connected between the left turn side terminal 28 of the turn signal switch 24 and the ground.
0, 31 and a pilot lamp 32 are connected. Further, turn signal lamps 33, 34 and a pilot lamp 35 are connected between the right turn side terminal 29 and the ground.

In this device configured in this way, when the main switch 1 is in the off (OFF) or accessory (ACC) position and the hazard switch 15 is on and the turn signal relay 23 is closed, the buzzer terminal 22 is closed. Although a voltage is applied to the buzzer 27, the diode 26 blocks the current from flowing to the safety circuit 13, so the buzzer 27 does not sound. Also turn signal relay 23
Since the safety circuit 13 side is not energized even when the buzzer 27 is opened, the buzzer 27 will not operate.

Next, when the hazard switch 15 is left on and the main switch 1 is turned on, the safety circuit 13 is energized, so when the turn signal relay 23 opens, the current flows through the diode 26, The signal flows through the buzzer 27, the buzzer terminal 22, the left turn side terminal 19, the right turn side terminal 21, the left turn side terminal 28 and the right turn side terminal 29 of the turn signal switch 24, and the buzzer 27 sounds.
In addition, since the resistance value of the buzzer 27 is extremely larger than the resistance value of the turn signal lamps 30, 31, 33, and 34, the turn signal lamp 3
0, 33, and 34 do not light up. When the turn signal relay 23 is closed, the buzzer 27 has the same potential at both ends, so it does not sound. At this time, turn signal lamps 30, 31, 33,
34 lights up.

As mentioned above, if you turn on the main switch 1 while the hazard switch 15 is on, the buzzer 27 will sound and stop repeatedly to warn you, so you can avoid starting without forgetting to turn off the hazard lamps. This means that it can be prevented.

In the circuit of FIG. 1, the line connecting the diode 26 and the safety circuit 13 is replaced by the solid line a in FIG.
It may be replaced with either of the connections shown by broken lines b and c. Further, the positions of the diode 26 and the buzzer 27 may be exchanged. Furthermore, the buzzer 27 may be a piezoelectric buzzer having polarity, and the diode 26 may be omitted. Furthermore, as shown in FIG. 2, the contact position of the hazard switch 15 is changed, and the diode 26 is
The connection between the buzzer 27 and the buzzer 27 may be changed.

Since the present invention is configured as described above, it has the following effects.

This is beneficial for safety because the buzzer warning prevents the driver from driving with the hazard lamps flashing. Since this warning is not issued while the engine is stopped, passengers waiting inside the vehicle will not feel uncomfortable.

Since there is no need to worry about forgetting to turn off the hazard lamps or noise (warning sound), the hazard lamps can be used effectively, and as a result, the effect of preventing rear-end collisions on the road is increased.

Since no warning sound is generated when turning left or right, the interior of the vehicle remains quiet.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a modification of the one shown in FIG. 1...Main switch, 7...Battery, 1
3...Safety circuit, 15...Hazard switch, 22
... Buzzer terminal, 23 ... Turn signal relay, 26 ... Diode, 27 ... Buzzer, 3
0, 31, 33, 34...Turn signal lamp.

Claims (1)

[Scope of utility model registration request] In a vehicle that has a turn signal lamp circuit formed by connecting a turn signal relay to a movable contact of a turn signal switch and connecting a turn signal lamp to the left and right fixed contacts of the turn signal switch, the turn signal relay is connected to the engine ignition circuit. an ignition switch that connects the ignition terminal to the battery as a power source when the ignition terminal is on and when the engine is started, a flasher terminal whose connection changes depending on whether it is on or off, a turn signal relay in the turn signal lamp circuit, and a turn signal. It has a second flasher terminal connected to a connection point with a movable contact of the switch and a buzzer terminal that is closed when turned on, and when turned on, the flasher terminal is connected to the battery and at the same time the second flasher terminal is connected to the battery. A hazard switch is provided which shorts the movable contact and the left and right fixed contacts of the turn signal switch via a terminal, and connects the flasher terminal to the ignition terminal of the ignition switch when it is off,
The turn signal circuit is connected to a battery via the flasher terminal of the hazard switch and the ignition terminal of the ignition switch, and a buzzer is connected in series with a diode oriented such that the positive terminal side of the battery becomes the anode side. A device for preventing forgetting to turn off a hazard lamp, characterized in that a circuit is connected to the battery via an ignition terminal of the ignition switch, a buzzer terminal and a second flasher terminal of the hazard switch.