DE812512C - Device for securing against falling asleep at the wheel of a motor vehicle - Google Patents

Description

When driving over longer distances, for example on the motorway, symptoms of fatigue occur in the driver, which he usually does not notice will or want to become: The consequence is that the driver falls asleep and in many cases Cases an accident of the car is caused.

The invention aims to prevent this. It is based on the fact that after the driver falls asleep, the car continues to drive with a constant throttle position, and is that a arranged on the gas lever contact of the vehicle on one is guided along the rail provided with a number of individual contacts, wherein the contacts are each connected to bimetal relays. As soon as the throttle lever is longer Time remains in the same position, z. B. after 3 minutes, the bimetal relay warms up and triggers a horn, 'which warns the driver. Will now be the If the throttle lever is brought back into another position, the horn will be heard automatically because the corresponding bimetal relay cools down again.

The subject matter of the invention is illustrated schematically in the drawing in an exemplary embodiment .

In the illustrated embodiment, the throttle lever is i with a Contact 2 provided. This is when you move the throttle on a rail guided along with a corresponding number of isolated from each other Single contacts 3 is provided. Each of these contacts can be connected to a bimetal relay 4 be connected, which is usually the battery circuit 5 of a horn 6 or another leading signal device cffe-1 leaves. In the inventive Embodiment are to reduce the required number of bimetal relays, two contacts 3, each located at different points on the contact bar, with one another connected, so that only one bimetal relay is required for every second contact is. In the same. Way can also have more than two at different points on the contact rail located individual contacts must be connected to one another. In the position shown the circuit of the horn 6 is open. If contact 2 of the throttle stick remains for a certain time on one of the contacts 3, the associated bimetal relay 4 warms up and closes the circuit of the horn so that a horn sounds.

To increase the effect of the device can be in the circuit of the Horn a flasher relay must be switched on, so that the sound of the horn increases and decreases.

When the driver wakes up, the throttle lever is switched back to a different one When brought to the position, the bimetallic relay cools, the circuit of the horn is reopened and the horn stops.

The bimetal relays are advantageously exposed to a stream of air, which cools the heated bimetal relay. The air flow can only through natural train when the car is moving or in some other way, e.g. B. by the fan generated or reinforced by this.

Claims (3)

PATENT CLAIM: i. Device to secure against falling asleep of the driver at the wheel of a motor vehicle, characterized in that one on the gas lever arranged contact (2) on one with a number of mutually insulated Individual contacts (3) provided rail is guided along, with one or more Contacts are each connected to a bimetallic relay (4), which is activated when there is a longer stay of the throttle lever contact (2) is heated on a single contact (3) of the contact rail and closes a circuit of the horn. 2. Apparatus according to claim i, characterized characterized that in the circuit of the horn an intermittently acting relay, for example a flasher relay is switched on. 3. Apparatus according to claim i, characterized in that the bimetal relays an air flow when driving the car are exposed.