RU208048U1 - VEHICLE EMERGENCY BRAKING DEVICE - Google Patents

Abstract

The proposal relates to the field of transport engineering, in particular to the pneumatic brake system of vehicles and is intended primarily for the initial training of the driver's staff, for drivers with slow reaction times and drivers who feel more confident in controlling their actions. The technical result of the proposal is to ensure the automation of vehicle braking when the driver mistakenly presses the accelerator pedal instead of the brake pedal. The technical result is achieved by installing an electro-pneumatic valve connected to the pneumatic system of the car and a pneumatic cylinder located under the brake pedal and consisting of a compressed air supply fitting, a membrane with a stem fixed to it by a spring-loaded twisted spring mechanically acting on the pusher of the brake valve.

Description

The proposal relates to the field of transport engineering, in particular to the pneumatic braking system of vehicles and is intended primarily for the initial training of driver's staff, for drivers with delayed reaction and drivers who feel more confident in controlling their actions.

According to statistics, about 10% of all road traffic accidents (RTA) in our country occur from the driver mistakenly pressing the accelerator pedal instead of pressing the brake pedal. To a greater extent, novice drivers make mistakes, but experienced drivers also make mistakes, especially in the following cases: incorrect landing in the driver's seat; in a state of alcoholic or drug intoxication; in a state of excessive fatigue. In an emergency, the risk of confusing the brake pedal with the accelerator pedal is greatly increased. Thus, research aimed at developing a technical solution to reduce the risk of a road traffic accident when the driver mistakenly presses the accelerator pedal instead of pressing the brake pedal, are very relevant.

To solve the problem of informing the driver about stopping the acceleration of the car when the accelerator pedal is mistakenly pressed instead of pressing the brake pedal by using sound and / or light signaling, a utility model known from the field of technology is directed, taken as a prototype (RU 191548, Publ. 12.08.2019 Bull. 23), containing an accelerator pedal, a converter of the speed of the accelerator pedal into a current pulse consisting of a coil and a magnet, a switching device, a threshold element, a fuse, an accelerator pedal position sensor, a sound and light signaling device, and a power source.

At the same time, as a disadvantage of the prototype, its low efficiency should be noted, due to the length of the period between the receipt of the signal by the driver about the erroneous pressing of the accelerator pedal instead of pressing the brake pedal and the start of braking. This is primarily due to the fact that the average reaction time from the moment the driver receives a signal (sound and / or light) about the danger until the driver begins to influence the vehicle controls is: for men - 0.57 s; for women - 0.62 s. Thus, at a speed of 50 km / h and a reaction time of 0.6 s, the car will travel 9 m before the start of braking, and 44 m to a complete stop with a dry surface. danger before it begins to affect the controls (brake pedal) of the vehicle can significantly reduce the risk of an accident.

The technical result of the proposal is to increase the efficiency of emergency braking of the vehicle when the driver mistakenly presses the accelerator pedal instead of the brake pedal.

The technical result is achieved by the fact that an electropneumatic valve is installed, connected to the pneumatic system of the car and a pneumatic cylinder located under the brake pedal and consisting of a compressed air supply connection, a membrane with a rod attached to it with a spring-loaded coil spring, which mechanically acts on the brake valve pusher.

The proposal is illustrated by drawings, where:

in fig. 1 shows a schematic diagram of an emergency braking device;

in fig. 2 - the position of the pneumatic cylinder rod in the neutral position;

in fig. 3 - position of the pneumatic cylinder rod in case of emergency braking.

The proposed utility model contains accelerator pedals 1 and brake 2, a converter of the speed of the accelerator pedal into a current pulse, made in the form of an inductor 3 and a magnet 4 located in it, a switching device 5, a threshold element 6, a fuse 7, an accelerator pedal position sensor 8, sound 9 and light signaling device 10, power source 11, pneumatic cylinder 12, consisting of a spring-loaded coil spring 13 of the rod 14 attached to the membrane 15 and the connection 16 for supplying compressed air, an electro-pneumatic valve 17, a brake valve 18 with a pusher 19.

The emergency braking device of the vehicle works as follows.

When you smoothly press the accelerator pedal 1, the device does not operate. When the accelerator pedal 1 is pressed sharply, the magnet 4 moves rapidly in the cavity of the coil 3, as a result of this, a current pulse of such an amplitude is generated at which the threshold element 6 is triggered, with a simultaneous change in the state of the accelerator pedal position sensor 8 (its contacts close). The switching device 5 is triggered, power is supplied to the light signaling device 10 and the sound signaling device 9, the latter turn on - the driver receives a notification about the incorrect pressing of the accelerator pedal 1. At the same time, power is supplied to the electro-pneumatic valve 17, which opens, providing air supply from the pneumatic system of the car through the fitting 16 for supplying compressed air to the pneumatic cylinder 12. Under the influence of the compressed air entering the pneumatic cylinder 12, the membrane 15, overcoming the force of the coil spring 13, will bend, which will ensure the movement of the rod 14 attached to it (see Fig. 3). When moving, the rod 14 acts on the pusher 19 of the brake valve 18, the car will brake without the driver acting on the brake pedal 2.

When the accelerator pedal 1 returns to its original position, the contacts of the sensor 8 open, the electro-pneumatic valve 17 closes the supply of compressed air to the pneumatic cylinder 12, the expanding force of the coil spring 13 will allow the rod 14 to return to its original position (see Fig. 2).

The sound signal can be in the form of a melody or sounds selected by the driver himself. The light signal can be made in the form of a light bulb, an indicator in the driver's field of vision.

The volume of the sound and the brightness of the light signal can be adjusted by the driver, up to a complete shutdown.

Compared to the prototype, the proposed design provides automation of vehicle braking, which will significantly reduce the number of accidents due to the driver's erroneous pressing on the accelerator pedal instead of the brake pedal.

Claims (1)

An emergency braking device of a vehicle containing an accelerator pedal, a converter of the speed of the accelerator pedal into a current pulse, consisting of an inductor and a magnet, a switching device, a threshold element, a fuse, an accelerator pedal position sensor, a sound and light signaling device, a power source, which is characterized by that an electro-pneumatic valve is installed, which can be connected to the pneumatic system of the car and to the pneumatic cylinder located under the brake pedal and consisting of a compressed air supply connection, a membrane with a spring-loaded coil spring attached to it, mechanically acting on the brake valve pusher, which is powered when sharply pressing the accelerator pedal.

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