CN102328630A - Pedestrian protection system for automobile - Google Patents

Abstract

The utility model relates to a pedestrian protection system for automobiles, relating to an automobile article. A pedestrian protection system for automobiles is provided which can prevent or reduce the death or injury of pedestrians in traffic accidents. It is equipped with front bumper airbag, hood bumper airbag, acceleration sensor, air pressure sensor, electronic control unit, front bumper air valve, hood bumper air valve and air pump; the front bumper airbag passes through the front bumper air valve and the air pump Connection, the airbag of the hood insurance pad is connected to the air pump through the air valve of the hood insurance pad; the sensor is installed in the two airbags, the signal output ends of the two sensors are respectively connected to the input end of the electronic control unit, and the front insurance pad air bag of the electronic control unit The valve control signal output end, the hood insurance pad air valve control signal output end and the air pump control signal output end are respectively connected to the two air valve input ends and the air pump control signal input end, and the two air valve output ends are respectively connected to two airbags, The two air valve input ends are respectively connected to the compressed air output end of the air pump.

Description

Pedestrian protection systems for cars

technical field

The invention relates to an automobile article, in particular to a pedestrian protection system for automobiles.

Background technique

According to the "Annual Report on Road Traffic Accidents of the People's Republic of China", the number of pedestrians who died due to traffic accidents in 2007 was 21,106, accounting for 25.85% of all traffic accident deaths; cities are high-incidence areas of pedestrian traffic accidents, Beijing Take the two major cities of Guangzhou and Guangzhou as an example: the pedestrian traffic accident casualty rate in Beijing accounts for 38% of the total number of local traffic accident casualties, of which 161 people died; the pedestrian casualty rate in Guangzhou accounts for more than 40%, of which the death toll is 224; The number of people is equivalent to the Wenchuan earthquake.

At the end of 2010, the number of cars in China has reached 74 million, most of which have not installed pedestrian protection systems. Currently, only a small proportion of cars have pedestrian protection systems, and they are all designed when new cars are designed. , Installed when the car is produced, such as Honda Acura RL and TL , Nissan GTR and 350Z , Infiniti G37, Citroen C6, Jaguar XF and other models. If the pedestrian protection system is to be installed on a car that does not have this design originally, it is a difficult point at present because it will be combined with the original car structure (especially the pop-up pedestrian protection system like the hood, if it is not considered in the design of the original car, almost Impossible to install later), and about 50 people are directly killed by automobiles every day in my country, how to install pedestrian protection system on existing automobiles is an urgent problem to be solved.

Chinese patent CN101607545 discloses a pedestrian protection method for the front of a car. The method is to install a buffer device on the inner wall of the front cover of the automobile; the position of the buffer device corresponds to the position of the lower hard component. When automobile collides with pedestrian, the upper body of pedestrian falls on the front cover of car front, and the front cover is pressed to the hard object below such as engine cover etc. Under normal circumstances, these hard parts will cause serious injuries to pedestrians; but now because the buffer device below absorbs the impact energy of pedestrians, it buffers the impact force of hard parts on pedestrians, thereby achieving the effect of protecting pedestrians.

Chinese patent CN101077704 discloses a special pedestrian protection device for the front bumper of an automobile. The pedestrian protection device is installed on the lower part of the front bumper assembly of the automobile through a bracket; the pedestrian protection device adopts thin materials and a newly designed structure to reduce the height of the impact part , to control the impact process on the legs, reduce the impact force, and at the same time ensure that the energy absorption is coordinated with the front bumper, so as to effectively protect the knees and legs of pedestrians from serious injuries.

Chinese patent CN1931638 discloses a car including a pedestrian protection device, the pedestrian protection device includes a control unit, an air source and an air bag, the control unit is electrically connected to the air source, and the air source communicates with the air bag; wherein, the engine cover The side close to the front windshield is openly connected to the vehicle body. When the air bag is not deployed, it is folded and placed in the engine hood near the side of the front windshield. When unfolded, the air bag is flat on the front windshield and unfolded Part of the air bag is located under the open hood and forms a support for the hood.

Contents of the invention

The object of the present invention is to provide a pedestrian protection system for automobiles which can avoid or reduce the death or injury of pedestrians in traffic accidents.

The present invention is provided with front bumper airbag, hood bumper airbag, acceleration sensor, air pressure sensor, electric control unit, front bumper air valve, hood bumper air valve and air pump; Front bumper airbag passes through front bumper air valve It is connected with the air pipe and the air pump, and the hood insurance cushion airbag is connected with the air pump through the hood insurance cushion air valve and the air pipe; the acceleration sensor and the air pressure sensor are installed in the front insurance cushion airbag and the engine hood insurance cushion airbag, and the signal output terminal of the acceleration sensor and The signal output terminals of the air pressure sensor are respectively connected to the input terminals of the electronic control unit, and the control signal output terminals of the front bumper air valve of the electronic control unit, the output terminals of the air valve control signal of the engine cover bumper and the output terminals of the air pump control signal are respectively connected to the front bumper The air valve input end, the hood insurance pad air valve input end are connected to the air pump control signal input end, the front insurance pad air valve output end, and the engine hood insurance pad air valve output end are respectively connected to the front insurance pad airbag and the hood insurance pad airbag, The input end of the air valve of the front insurance pad and the input end of the air valve of the hood insurance pad are respectively connected to the compressed air output end of the air pump.

The front bumper airbag can be an inflatable rubber and plastic airbag, and the hood bumper airbag can also be an inflatable rubber and plastic airbag.

The front bumper airbag can be provided with at least one of a left inflatable front bumper airbag, a right inflatable front bumper airbag, a middle front bumper airbag, etc., the left inflatable front bumper airbag, the right inflatable front bumper airbag The airbag of the insurance cushion and the airbag of the middle front insurance cushion can be connected or independent.

Since the main body of the present invention is an inflatable rubber and plastic airbag, when the vehicle starts running, the electronic control unit receives the signal from the acceleration sensor, and when the speed of the vehicle exceeds a set value (such as 5km/h), the electronic control unit controls the self-contained airbag of the vehicle. The air pump (if the original car is not equipped with an air pump, a new one must be installed) inflates the airbag, so that the front airbag automatically protrudes about 0.1-0.3m from the front of the vehicle, and the air pressure value in the airbag can be transmitted to the electronic control unit through the air pressure sensor; When the set value is reached, the electronic control unit controls the air pump to stop inflating. Once the vehicle collides with the human body in front, the airbag will play a buffer role.

Since the car is also provided with a hood safety cushion airbag, the hood safety cushion airbag is located at the end of the hood (in front of the bottom of the front windshield), so when a pedestrian bumps and rolls onto the hood and rolls the front windshield, it can Cover the fatal "hard points" such as the bottom of the front windshield, the swing shaft of the wiper and the support of the hood, so as to reduce the degree of secondary collision of pedestrians.

When the vehicle is parked, the electronic control unit can control the air valve of the airbag to exhaust outwards, and at the same time, the spring installed between the front end of the airbag and the vehicle body retracts the front part of the airbag.

The invention has strong portability, is suitable for various types of cars, has low cost, is suitable for common car consumers, and has good popularity. When the front end of the car hits a person, the inflatable insurance pad can buffer and even avoid serious accidents on the one hand; at the same time, the sensor on the insurance pad provides information to the car's electronic control system (engine and braking system, etc.), prompting the car to turn off and brake. , to avoid the occurrence of the phenomenon of "drunk driving hits people but the driver does not feel and does not take the brakes", effectively reducing the loss of people's lives and property.

Description of drawings

Fig. 1 is a block diagram of the structural composition of the embodiment of the present invention.

Fig. 2 is a schematic diagram of the structural composition and installation state of the embodiment of the present invention.

FIG. 3 is a schematic diagram of the structural composition and installation state of the side view of FIG. 2 .

Detailed ways

1 to 3, the embodiment of the present invention is provided with an electronic control unit 1, a hood bumper airbag 2, a hood bumper air valve 3, an air pump 5, a front bumper air valve 6, a front bumper airbag 7, an acceleration sensor 8 and air pressure sensor 9. The front bumper airbag 7 is connected with the air pump 5 through the front bumper air valve 6 and the trachea, the hood bumper airbag 2 is connected with the air pump 5 through the hood bumper air valve 3 and the trachea; the acceleration sensor 8 and the air pressure sensor 9 are mounted on the front In the bumper airbag 7 and the hood bumper airbag 2, the signal output end of the acceleration sensor 8 and the signal output end of the air pressure sensor 9 are respectively connected to the input end of the electronic control unit 1, and the front bumper air valve control signal of the electronic control unit 1 The output end, the hood insurance pad air valve control signal output end and the air pump control signal output end are respectively connected with the front insurance pad air valve 6 input end, the hood insurance pad air valve 3 input end and the air pump 5 control signal input end, and the front insurance pad The output end of the cushion air valve 6 and the output end of the hood safety cushion air valve 3 are respectively connected to the front insurance cushion airbag 7 and the engine hood insurance cushion airbag 2, and the input end of the front insurance cushion air valve 6 and the input end of the hood insurance cushion air valve 3 are respectively Connect the compressed air output end of the air pump 5 through the air pipe.

The front bumper airbag 7 can be an inflatable rubber and plastic airbag, and the hood bumper airbag 2 can also be an inflatable rubber and plastic airbag.

The front bumper airbag 7 can be provided with at least one of a left inflatable front bumper airbag, a right inflatable front bumper airbag, a middle front bumper airbag, etc., the left inflatable front bumper airbag, the right inflatable front bumper airbag The front bumper airbag and the middle front bumper airbag can be connected or independent.

The electronic control unit may adopt a commonly used control circuit, such as a microprocessor.

In Figures 2 and 3, reference 4 is the trachea.

Claims (5)

1. the pedestrian protection system that is used for automobile, safety pad air bag, bonnet safety pad air bag, acceleration pick-up, BARO sensor, ECU, preceding safety pad air valve, bonnet safety pad air valve and air pump before it is characterized in that being provided with; Preceding safety pad air bag is connected with air pump with tracheae through preceding safety pad air valve, and bonnet safety pad air bag is connected with air pump with tracheae through bonnet safety pad air valve; Acceleration pick-up and BARO sensor are contained in preceding safety pad air bag and the bonnet safety pad air bag; The signal output part of acceleration pick-up and the signal output part of BARO sensor connect the input end of ECU respectively; The preceding safety pad Air Valve Control signal output part of ECU, the gentle pump control signal mouth of bonnet safety pad Air Valve Control signal output part are connected with preceding safety pad air valve input end, the gentle pump control signal input end of bonnet safety pad air valve input end respectively; Safety pad air bag and bonnet safety pad air bag before preceding safety pad air valve mouth, bonnet safety pad air valve mouth connect respectively, preceding safety pad air valve input end and bonnet safety pad air valve input end connect the pressurized air mouth of air pump respectively.

2. the pedestrian protection system that is used for automobile as claimed in claim 1 is characterized in that said preceding safety pad air bag adopts inflatable rubber and plastic air bag.

3. the pedestrian protection system that is used for automobile as claimed in claim 1 is characterized in that said bonnet safety pad air bag adopts inflatable rubber and plastic air bag.

4. the pedestrian protection system that is used for automobile as claimed in claim 1 is characterized in that said preceding safety pad air bag is provided with at least one in left inflatable preceding safety pad air bag, right inflatable preceding safety pad air bag, the preceding safety pad air bag in centre.

5. the pedestrian protection system that is used for automobile as claimed in claim 4 is characterized in that the inflatable preceding safety pad air bag in a said left side, right inflatable preceding safety pad air bag and middle preceding safety pad air bag connection or independent.

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