RU2475384C1 - Device for emergency brake application - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to machine building, particularly, to emergency brakes. Proposed device consists of the case tightly fitted in wheel disc opening. Said case has taper hole to receive the valve. Said valve may rotate and is secured to said case by pin fitted in clevis with holes. Said valve has ledge made from magnetic material and return spring connecting the valve with said case. Note here that signal receiver is secured to the case.

EFFECT: faster braking in emergency.

1 dwg

Description

The invention relates to the field of transport engineering, and in particular to vehicle braking devices, which are used to prevent emergency situations.

A device for emergency braking of a vehicle [RU 2374101 C2, B60T 1/12 (2006.01), B60R 21/02 (2006.01), 11/27/2009], which relates to the field of engineering, in particular to equipment that improves the safety of vehicles in extreme situations. The device is made in the form of a closed volumetric vessel placed symmetrically relative to the longitudinal axis of the vehicle with openings in the front part closed by a membrane and a decorative protective film. A closed volumetric vessel is filled with a non-freezing non-combustible neutral liquid. A pyro cartridge with an electric valve and a liquid presence sensor are installed inside the vessel, which are connected to the microprocessor. The rangefinder, accelerometer and pressure sensor installed in the vehicle’s brake pedal are connected to the microprocessor. The range finder is installed with the ability to hold its optical axis in the direction of motion of the vehicle's center of gravity. EFFECT: prevention of contact with the object or reduction of destructive action in the event of a collision due to additional suppression of the approach speed, as well as the possibility of extinguishing or preventing the fire of vehicles during their collision.

A device for emergency braking of a car [RU 2408480 C2, B60T 1/14 (2006.01), 01/10/2011], which relates to the field of transport engineering, namely, brake devices of a car. The device comprises a frame, a brake unit with pointed elements, and power cylinders. The frame contains brackets pivotally mounted to the rear axle beam or the car body. On each of the brackets a power cylinder with a hydraulic actuator or electric drive is installed. The brackets are rigidly interconnected using the axis on which the thread is made. The brake assembly is made in the form of two rollers with pointed elements. The rollers are internally threaded and placed on an axis, on each side of which a spring is installed between the roller and the bracket. A simplification of the design of the braking device is achieved.

A known brake system and method of regulating braking [RU 2384433 C2, B60T 8/00 (2006.01), 03/20/2010], the system includes a brake pedal and an amplifier unit, a hydraulic unit with an integrated electronic controller, a wheel brake, an electronic hydraulic unit that switches device. The method consists in pre-filling the brake cylinder of the wheel brake in accordance with the function of "anticipatory increase in pressure in the brake system". The function of “proactive pressure increase in the brake system” is activated or deactivated, preferably automatically, depending on the selected operating mode. The technical result is to increase the active safety of the driver.

The technical solutions for emergency braking discussed above reduce the braking time, but do not receive its additional reduction due to the increase in the contact area of the tire with the supporting surface of the road surface.

The objective of the invention is to develop a method and device for emergency braking by increasing the contact area of the tire wheels with the road surface.

When driving vehicles on paved roads, the tire pressure is strictly regulated by the manufacturer and always remains constant. To increase off-road patency, it is recommended to relieve the pressure in the tires (lower the wheels), while increasing the contact area of the tire with the road surface.

Consequently, with an increase in the contact area due to partial depressurization of the tire, the time during emergency braking can also be reduced.

To achieve this, a method of emergency braking due to partial depressurization of the tire (increase the contact area of the tire of the wheel with the road surface) is proposed, while the device for relieving pressure is hermetically fixed to the disk of each wheel of the vehicle and allows you to quickly relieve pressure in the tire of the wheel to the required pressure during emergency braking.

The device for emergency braking consists of a housing 1, which is hermetically fixed in the hole of the wheel disc. A conical hole for the valve 2 is made in the housing 1. Valve 2 is designed to open and timely close the conical hole for the valve 2 and is rotatable relative to the earring with holes 3, which is rigidly connected to the housing 1. The valve 2 is connected to the earring with holes 3 s using a pin installed in the holes made in the valve and earring (figure 1).

For tight closing of the valve 2, an increased clearance is provided in the pairing of the earring-pin or pin-valve.

In addition, on the valve 2 there is a protrusion 4 made of magnetic material, and a return spring 5 connecting the valve 2 to the housing 1. An electromagnet with an independent power source, a sensing element and a control unit (hereinafter referred to as signal receiver 6) is attached to the housing 1. An electromagnet restricts the rotation of the valve by a certain angle with its “body”. The signal source is an emergency braking system, the principle of which is based on recognition of the emergency braking situation by the speed of pressing the brake pedal.

The device operates as follows.

The speed of pressing the brake pedal is recorded by the brake pedal speed sensor and transmits a signal to the electronic control unit.

If the signal exceeds the set value, the electronic control unit activates the electromagnet for a certain period of time (for example, using a radio signal) and opens valve 2.

When you sharply press the brake pedal, a signal is received at the signal receiver, while the electromagnet is triggered and opens valve 2 all the way into the “body” of the electromagnet for a certain period of time, while the tire pressure is released. After a predetermined time, which determines the required tire pressure, the power supply to the electromagnet is switched off, while valve 2 closes the conical hole under the action of the return spring 5. After closing valve 2, the tire pressure stops, and the vehicle continues to brake completely stop it (figure 1).

If there is no collision with an obstacle, then for the subsequent operation of the vehicle it is necessary to restore normal tire pressure.

The proposed device can work in conjunction with known anti-lock systems.

The proposed method and device for emergency braking provide the ability to more quickly reset the vehicle speed during emergency braking by increasing the contact area of the tire with the road surface.

Claims (1)

A device for emergency braking, including a housing that is hermetically fixed in the hole of the wheel disc, and in the housing there is a tapered hole for the valve, the valve being rotatable and attached to the housing using a pin mounted in the earring with holes, in addition to a protrusion made of magnetic material and a return spring connecting the valve to the housing are located on the valve, and a signal receiver is attached to the housing.