RU211136U1 - Device for the safety of pedestrians in a collision with a cabover vehicle - Google Patents

Abstract

The utility model relates to devices for external passive safety of cars, namely to body elements for protecting pedestrians in the event of a collision between a car and a pedestrian. Essence: the device contains squibs and gas-filled external airbags located in the folded position in the front compartments of the body. The compartments with pillows are located in the area of the front, lower and side parts of the body. Moreover, the side cushions are equipped with nets and side elastic flaps connected by means of Velcro. Axes of compartments of lateral pillows are located at angles to an axis of the car. EFFECT: ensuring the safety of a pedestrian in a collision with a cabover vehicle or having a hood located above the center of gravity of the pedestrian, by increasing the width of the frontal zone of contact between the pedestrian and the car by the side airbags and trapping the pedestrian with nylon nets that prevent him from flying off the car and hitting the road , and a pillow in the lower part of the body prevents a pedestrian from being under the car. 4 ill.

Description

The utility model relates to devices for external passive safety of cars, namely to body elements for protecting pedestrians in the event of a collision between a car and a pedestrian.

Measures to improve external passive safety are aimed at reducing the severity of injuries to pedestrians, drivers and passengers of the vehicle involved in an accident by ensuring such a constructive performance of the outer surfaces and elements of the vehicle, in which the likelihood of human injury by these elements would be minimal (see Molodtsov V .A. Vehicle Safety. Textbook for universities. - Tambov: TSTU. - 2013. - P. 181). The most severe pedestrian injuries occur in a frontal collision between a pedestrian and a vehicle. During a collision with a passenger car whose hood is below the pedestrian's center of gravity, the hood may strike and the pedestrian may fly over the vehicle. A cabover or high bonnet impact will cause the pedestrian to be thrown away from the vehicle with subsequent contact with the road or surrounding objects, exacerbating the severity of the crash. The pedestrian safety system in case of a collision with a cabover vehicle must have the following properties: be applicable to any shape of the front of the car; to ensure the reduction of pedestrian injury when flying through a car; to ensure the reduction of pedestrian injury when flying through the car; reduce pedestrian injury at high vehicle speeds; be repairable and reusable; ensure the operation of different security systems depending on the speed of the vehicle, weather conditions and visibility conditions.

A pedestrian detection system (SOP) is known, which includes a pedestrian recognition video system and an electronic brake control unit. The SOP is triggered at a distance of 40 m from the pedestrian, warns the driver of the danger and, if the driver does not react, takes control of the braking. The most effective speed for triggering the SOP is 35 km/h, collision avoidance is almost 100%. According to statistics from various accidents, as well as calculations of engineers, at a speed of 65 km / h, the probability of a collision between a pedestrian and a car is 85%. At a speed of 50 km / h - 45%. Therefore, many manufacturers have begun to install a pedestrian protection system on cars, a special elastic hood and bumper, as well as an airbag for pedestrians hidden between the windshield and the hood (see Pedestrian detection system: device, principle of operation, https://fastmb.ru/ auto_shem/3402-sistema-obnaruzheniva-peshehodov-ustrovstvo-princip-raboty.html).

Known external airbags for pedestrians, suggesting their placement along the pillars of the windshield. In the event of a collision with a pedestrian, the airbags will close the car window and pillars, thereby significantly reducing the risk of serious injury to the pedestrian (see External airbags for pedestrians - a new invention of Mercedes-Benz, https://national-expertise.ru/blog/mercedes /, Mercedes has developed new airbags for pedestrians, https://tvoe-avto.com/29267-mercedes-sozdal-vneshnie-podushki-bezopasnosti-dlya-peshehodov.html).

The disadvantage of this design is that the hood remains stationary and a pedestrian can be injured in a collision with it, and the shape of the airbag, which does not completely cover the windshield, can lead to injury, as well as overshooting a pedestrian at a high speed of collision.

Known airbag design, where the system operates at speeds from 20 to 50 km/h. Seven sensors are installed in the bumper of the car, which record contact with obstacles. If the electronics decides that a person has been hit, it gives a command to the squibs that release the rods in the hood hinges, as well as the gas generator, which inflates the pillow in a few milliseconds. And it not only covers the lower part of the windshield and the front pillars, but also raises the hood by ten centimeters. This dramatically reduces the risk of a pedestrian's head colliding with the rigid components of the engine compartment, as well as with the glass and car pillars ).

The disadvantage of the presented design lies in the shape of the airbag, which does not completely cover the windshield and does not prevent the pedestrian from being thrown over the car. In addition, such an airbag is applicable only on cars with a low hood, where the main impact of the transition with the car will fall on the part of the body below the person's center of gravity.

Proposals are known for the use of external airbags that completely cover the car from all sides and are filled with gas at the moment of impact or filled in advance. The applicability of this concept is promising, but it does not provide for the possibility of holding a pedestrian when being thrown over a car or thrown away from a car when hitting above the pedestrian's center of gravity (see External protection. Airbags outside the car, https://xn--80aackhmik6acgcci5acrf9g.xn--plai/ ?p=2599#more-2599).

Known external airbags for the protection of pedestrians, containing a frontal pillow covering the bumper and shock-absorbing front hood. The advantage of this design is the reduction of injuries to the lower body of the pedestrian, however, it is not possible to hold the pedestrian when being thrown over the car or thrown away from the car in case of an impact above the pedestrian's center of gravity (see Honda patented external airbags to protect pedestrians, https://snip1.ru /honda-patentiert-externen-airbag-zum-fusgangerschutz/).

A device for protecting a pedestrian in a collision with a car is known, containing in the car structure an external airbag having the ability to close the windshield, and in the initial position the external airbag is in the folded state in the body compartment, in front of the windshield of the car, and the device contains an additional airbag, in the folded state, located in the front bumper, and in the open position, having the ability to interact with the legs of a person and catching the airbag, which in the folded state is located on the roof of the car near the windshield, while the catching airbag in the open position forms a container, and the external airbag in the open position is located under a slope (see US Pat. RF No. 166333, B60R 21/36).

This system does a good job of protecting pedestrians, but the complex design makes it unlikely to be practical.

The closest design solution to the claimed utility model is an external airbag containing a gas-filled section located in a folded position in the body compartment directly in front of the windshield of the car and made with the possibility of covering the windshield, front vertical pillars and the leading edge of the roof of the car body in working condition. The pillow contains an additional gas-filled section in the form of a hollow sleeve, made with the possibility of forming an arcuate arch in working condition and placing above the car body. The pillow is made of a bucket shape and faces the concave side towards the pedestrians. The ends of the sleeve are connected to the first section from the side of the roof of the car, and the edge - from the side of the hood of the car by means of rope rods, an elastic mesh is fixed in the space between the first and second sections (see Pat. RF No. 196651, B60R 21/36).

The disadvantage of this airbag is its applicability only on cars with a low hood, where the main impact of the transition with the car will fall on the part of the body below the center of gravity of the person. That is, this airbag does not solve the problem of cars with a high hood and trucks.

The technical problem of the known technical solutions lies in the impossibility of eliminating the kickback of a pedestrian after a head-on collision with a car, which aggravates the severity of the consequences of an accident. In addition, most of the known designs do not exclude the possibility of a pedestrian getting under the car after a collision.

The technical result achieved by the claimed utility model is to ensure the safety of a pedestrian in a collision with a cabover vehicle or having a hood located above the center of gravity of the pedestrian, by increasing the width of the frontal zone of contact between the pedestrian and the car by the side airbags and trapping the pedestrian with nylon nets that do not give him fly away from the car and hit the road, and the cushion in the lower part of the body does not allow the pedestrian to be under the car.

The essence of the claimed utility model lies in the fact that the device for the safety of pedestrians in a collision with a cabover vehicle contains squibs and gas-filled external airbags located in the folded position in the front compartments of the body. The compartments with pillows are located in the area of the front, lower and side parts of the body. Moreover, the side cushions are equipped with nets and side elastic flaps connected by means of Velcro. Axes of compartments of lateral pillows are located at angles to an axis of the car.

In the claimed device, three types of airbags are used. The frontal airbag softens the initial impact of a pedestrian on the car. The side airbags increase the width of the frontal zone of contact between the pedestrian and the car and are equipped with nylon nets that catch the pedestrian and prevent him from flying off the car and hitting the road. A cushion in the lower part of the body, for example, below the bumper, prevents a pedestrian from being under the vehicle. The side airbags are equipped with side elastic flaps connected by means of Velcro to hold the nets near the pillows in the folded state, and then open when the airbags are triggered and throw the nets in the direction of the axes of the side airbag compartments. The location of the axes of the compartments of the side airbags at angles to the axis of the car, for example, at angles of 30 ... 40 °, ensures the ejection of the nets in this direction and the reliable coverage of the pedestrian by the nets in the event of a collision with the vehicle and retention, preventing the pedestrian from being kicked out after a collision.

The utility model is illustrated by drawings, where:

- in Fig. 1 schematically shows a general view of the machine in plan;

- in Fig. 2 is a view of a container with a side cushion and mesh;

- in Fig. 3 and 4 are top and side views, respectively, with elements of the security system released.

The device for the safety of pedestrians in a collision with a cabover vehicle 1 includes a container 2 with a frontal airbag, side containers 3 with airbags equipped with catching nets, a container 4 with an airbag that deploys from the bottom of the car and prevents the pedestrian from being under the car (see Fig. one). The side container 3 contains a rectangular body 5, the axis of which is located at an angle to the vehicle axis, for example, at an angle of 30...40°. Inside the housing 5 there is an airbag 6, which receives gas from the squibs 7, equipped with a mesh 8 and side elastic flaps 9 holding the mesh 8 in the folded state and connected by Velcro 10. The housing 5 can be located in the bumper 11 or in other elements of the front part of the body (see Fig. 2).

The safety device contains an electronic triggering system for all airbag squibs similar to the one described above (see Volvo V40 Hatch was the first to receive a pedestrian airbag, https://www.drive.ru/news/volvo/4fbcb4da09b6027201000030.html).

Device for the safety of pedestrians in a collision with cabover car operates as follows.

When the squibs 7 are triggered from the container 2, the frontal airbag 12 is deployed and occupies a position protecting the pedestrian from a frontal impact. Side airbags 6 with nets 8 are fired from the containers 3, which cover the pedestrian from the sides, catching him, preventing him from hitting the airbag 12 from flying off the vehicle and hitting the road. The location of the axes of the compartments of the side airbags at angles to the axis of the vehicle, for example, 30…40°, ensures the ejection of the nets in this direction and reliable coverage of the pedestrian. The cushions 12 themselves increase the width of the frontal zone of contact between the pedestrian and the car (see Fig. 3). Cushion 13 is opened from container 4 to prevent pedestrians from penetrating underneath the car (see Fig. 4).

Thus, the claimed utility model ensures the safety of a pedestrian in a collision with a cabover vehicle or with a hood located above the pedestrian's center of gravity.

Claims (1)

A device for the safety of pedestrians in a collision with a cabover vehicle, containing gas-filled external airbags located in the folded position in the front compartments of the body, and squibs, characterized in that the compartments with airbags are located in the area of the frontal, lower and side parts of the body, and the side airbags safety nets are equipped with meshes and side elastic flaps connected by means of Velcro, and the axes of the side airbag compartments are located at an angle to the vehicle axis.

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