RU2256566C1 - Method of protection of redestrian and car when moving rearwards at parking - Google Patents

Abstract

FIELD: automotive industry.

SUBSTANCE: car safety system is furnished additionally with shock absorbing rear bumper extended towards obstacle when reverse gear is shifted in. said bumper is located at level of sills of car and it cushions bumps of car against obstacle, thus preventing damage to car and saves pedestrian staying on the way of car moving backwards. Brake system is cut in to stop the car when extensible bumper comes in contact with obstacle.

EFFECT: improved safety when moving rearwards at parking.

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Description

The invention relates to the automotive industry and relates to the safety of a pedestrian and the safety of an expensive car when parking in reverse.

Reverse parking is one of the hardest elements of driving a car. It is unlikely that there will be a driver with whom no incident would have occurred during this maneuver. On average, every 4-5 years, this happens to every driver. Reversing does not protect against annoying incidents and collisions with various obstacles - a fence, a curb, a car or a pedestrian.

The creators of new cars, attaching great importance to safety, in addition to traditional rear-view mirrors, install color rear-view cameras that transmit the image to the LCD screen.

There are also parking radars that can warn the driver about approaching obstacles. They use the principle of ultrasonic location (http://www.easy-parking.ru/about.php3).

The Cadillac Vizon is equipped with the Ultrasonic Rear Parking Assist, which facilitates reversing. She uses visual and audible signals to inform the driver about how close the car is to the obstacle. The system is based on four ultrasonic sensors mounted in the rear bumper (http://www.cadillac.ru/tech/vizon_pr.htm).

However, all these systems only warn the driver about a dangerous approach to the obstacle and cannot prevent a collision.

This parking problem can be solved by equipping the car with an additional shock-absorbing bumper, which automatically extends from the main rear bumper of the car to meet the obstacle when the driver engages the reverse gear and occupies a position at the threshold of the car. This will save an expensive car from destruction in the event of a collision with an obstacle and prevent pedestrian collisions.

The drawing, attached to the description, shows such a method of protecting a pedestrian and a car when parking in reverse.

Figure 1 - view of the car with an additional bumper in the transport position.

Figure 2 - the same bumper at the time of the beginning of the movement "reverse".

Figure 3 - he is at the time of collision with an obstacle.

The technical result is achieved by the fact that the entire design of the additional bumper is attached to the bottom of the trunk of the car. The main role in this design is played by two pushers, each of which is located against “its” rear wheel. The pusher consists of a threaded sleeve 1, on one end of which is the left and on the other is the right thread. On both sides of this coupling, rods 2 and 3 are screwed, which have different lengths and thread pitch. The end of the rod 2, facing the wheel, ends with the roller 4. The other end of the rod, facing the obstacle, ends with the pneumatic cylinder 5 and the additional bumper 6. The pusher is fixed to the body and its mobility is carried out through the guide sleeve 7 and the hinge 8.

Pedestrian and car protection when parking in reverse is as follows.

When the driver turns on the gear “reverse” (in the position of Figure 1), a servo drive (not shown) is turned on, which puts the entire structure in a horizontal working position (Figure 2). At the same time, a threaded coupling 1 is rotated by a servo-drive. Since it has left and right threads, the rods 2 and 3 begin to lengthen. The rod 2 with the roller 4 abuts against the rear wheel, and the rod 3 pushes the additional shock-absorbing bumper 6 to the “working” position outside the main bumper. All this happens simultaneously with both pushers.

At that moment, when the car moving backwards touches the obstacle or the pedestrian with the bumper 6, the brake system automatically engages. This excludes collisions with pedestrians or vehicle damage.

In another case, when the shock-absorbing bumper 6 touches the obstacle, and the car continues to move on it (sliding road surface), the bumper through the rods 2 and 3, sliding in the guide clutches 7, and resting on the rear wheels with rollers 4, compress the pneumatic cylinders 5 (Fig. .3), as a result, the car's impact on the obstacle is “softened”.

In the transport position, the pushers and the bumper are placed when the servo is turned on and the threaded coupling 1 is rotated in the opposite direction when the driver turns off the reverse gear.

Equipping the vehicle with a shock-absorbing retractable rear bumper, located at the threshold of the vehicle, provides improved protection when hitting a side of another vehicle. In this case, the “softening” blow does not fall on the central pillar of the body or the car door, but on the threshold, which together with the floor is a single unit and has considerable strength. At the same time, people in the salons of both cars will not experience shock load.

It should be noted that this method cannot be a panacea and ensure safety at all high-speed modes. However, at moderate speeds it will significantly reduce the number of damaged cars and injured pedestrians.

Claims (1)

A method for protecting a pedestrian and a car when parking in reverse, comprising an additional shock-absorbing rear bumper, characterized in that, in order to prevent destruction of the rear of the car, the bumper automatically extends towards an obstacle at the threshold level when the reverse gear is engaged, while simultaneously activating the brake systems at the moment of contact of an obstacle.

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