CN111332244A - Automobile pedestrian protection method and automobile front bumper safety airbag - Google Patents
Automobile pedestrian protection method and automobile front bumper safety airbag Download PDFInfo
- Publication number
- CN111332244A CN111332244A CN201911267672.8A CN201911267672A CN111332244A CN 111332244 A CN111332244 A CN 111332244A CN 201911267672 A CN201911267672 A CN 201911267672A CN 111332244 A CN111332244 A CN 111332244A
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- Prior art keywords
- automobile
- front bumper
- air bag
- pedestrian
- cavity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R21/36—Protecting non-occupants of a vehicle, e.g. pedestrians using airbags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R2021/01204—Actuation parameters of safety arrangents
- B60R2021/01211—Expansion of air bags
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Air Bags (AREA)
Abstract
A pedestrian protection method for a vehicle and a front bumper airbag for the vehicle are provided, which can protect the legs of pedestrians after the pedestrians collide with the front of the vehicle. The pedestrian protection method for the automobile comprises the following steps: 1. the safety airbag of the front bumper of the automobile is arranged in the front bumper of the automobile, and a weakening port is formed in the surface of the front bumper of the automobile corresponding to the front bumper of the automobile; 2. when the automobile runs at the speed of more than 25km/h and a pedestrian collides with the front bumper of the automobile in 50ms-100ms, the gas generator of the safety airbag of the front bumper of the automobile, which is arranged in the front bumper of the automobile, is ignited; 3. then, the air bag is inflated, so that the air bag is flushed out of the weakening opening of the front bumper of the automobile and is unfolded between the leg of the pedestrian and the front bumper of the automobile and the front end of the engine compartment cover of the automobile. The present invention meets the pedestrian leg protection requirements of the Euro-NCAP 2021 standard.
Description
Technical Field
The invention relates to a pedestrian protection method for an automobile and an automobile front bumper safety airbag.
Background
At present, in the field of automobile pedestrian protection, pedestrian head protection devices mainly comprise an engine compartment cover rear lifting device and an engine compartment cover safety air bag arranged at the rear part of the engine compartment cover. The leg protection of the pedestrian is mainly realized by weakening and absorbing energy of a front bumper of the automobile, so that the injury value of the automobile to the leg of the pedestrian is reduced, and the purpose of protecting the leg of the pedestrian is achieved. An excessively weakened front bumper of the vehicle will tend to affect the strength of the front portion of the vehicle and the safety of occupants in the vehicle. With the implementation of the Euro-NCAP 2021 roadmap and the enlargement of the mass block at the upper part of the leg-shaped object for the automobile pedestrian protection collision test, the existing design scheme for weakening and absorbing energy of the automobile front bumper cannot meet the requirements of the Euro-NCAP 2021 standard.
Disclosure of Invention
The invention aims to provide an automobile pedestrian protection method and an automobile front bumper safety airbag, which can protect the legs of pedestrians after the pedestrians collide with the front side of an automobile.
The technical scheme of the invention is as follows:
a pedestrian protection method for an automobile comprises the following steps:
1. the safety airbag of the front bumper of the automobile is arranged in the front bumper of the automobile, and a weakening port is formed in the surface of the front bumper of the automobile corresponding to the front bumper of the automobile;
2. when the automobile runs at the speed of more than 25km/h and a pedestrian collides with the front bumper of the automobile in 50ms-100ms, the gas generator of the safety airbag of the front bumper of the automobile, which is arranged in the front bumper of the automobile, is ignited;
3. then, the air bag is inflated, so that the air bag is flushed out of the weakening opening of the front bumper of the automobile and is unfolded between the leg of the pedestrian and the front bumper of the automobile and the front end of the engine compartment cover of the automobile.
Further, the automobile front bumper airbag in the step 1 is installed in a front bumper between two headlights of an automobile.
Further, the fact that in the step 2, when the automobile runs at the speed of more than 25km/h, a pedestrian is about to collide with the front bumper of the automobile for 50ms-100ms is detected through an on-board radar and a speed measurement sensor.
Furthermore, the air bag in the step 3 is of a two-cavity structure and is respectively an air bag air guide cavity and an air bag protection cavity, when the air bag is inflated, air is filled in the air bag air guide cavity firstly, the air bag protection cavity is pushed out of the weakening port of the front bumper of the automobile through the air bag air guide cavity, then the air enters the air bag protection cavity through the air vent between the air bag air guide cavity and the air bag protection cavity, so that the air bag protection cavity is filled with air and is unfolded between the leg of a pedestrian and the front bumper of the automobile and the front end of the engine compartment cover of the automobile.
An automobile front bumper safety airbag is characterized in that: comprises a gas generator, an air bag protection sheet, a support ring, a shell and a fastening nut; the air bag is folded, the folded air bag is wrapped by the air bag protection sheet and is connected with the support ring, the air bag protection sheet, the shell and the gas generator are fixed through the fastening nut and are installed from inside to outside by the bolts fixedly arranged on the support ring, and the shell is provided with the mounting support.
Further, the casing passes through the installing support and installs inside the bumper before the car, is equipped with the reduction mouth in the bumper surface before the car corresponding bumper position before the car.
Furthermore, the air bag is of a two-cavity structure and is respectively an air bag air guide cavity and an air bag protection cavity, an air vent is arranged between the air bag air guide cavity and the air bag protection cavity, a generator mounting port is arranged in the air bag protection cavity corresponding to the position of the gas generator, and the gas generator is connected with the generator mounting port of the air bag air guide cavity.
Further, the mounting bracket comprises an upper bracket arranged on the upper surface of the shell, a lower bracket arranged on the lower surface of the shell and a back bracket arranged on the back surface of the shell.
Furthermore, the upper support and the lower support are respectively arranged in a left, middle and right mode, and the back support is arranged in a left and right mode.
Furthermore, the surface of the upper bracket positioned in the middle is provided with a round hole, and the surfaces of the upper brackets positioned on the left side and the right side are provided with a long hole; the lower part of the lower bracket is provided with a notch; the center of the surface of the back support is provided with a screw hole.
The invention has the beneficial effects that:
when the automobile runs at a speed higher than a certain speed, when a pedestrian is about to collide with the front side of the automobile, the safety airbag of the front bumper of the automobile is ignited and unfolded between the leg of the pedestrian and the front bumper of the automobile as well as the front end of the engine compartment cover of the automobile, and the technical problem of realizing the leg protection of the pedestrian by optimally designing the front bumper of the automobile is solved. Thereby, the pedestrian leg protection device provides effective protection for the leg of the pedestrian, and meets the requirement of pedestrian leg protection of the Euro-NCAP 2021 standard.
Drawings
FIG. 1 is a schematic view of the mounting position of a front bumper airbag for an automobile according to the present invention;
FIG. 2 is a schematic view of the deployment of the front bumper airbag of the vehicle of the present invention;
FIG. 3 is a schematic view of an automotive front bumper airbag module of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a schematic view of the front bumper airbag construction of the present invention;
in the figure: 1. pedestrian, 101 pedestrian's shank, 2, car, 201, car engine compartment lid, 202, car front bumper, 202a, the reduction opening of car front bumper, 3, car front bumper air bag, 301, gas generator, 302, the air pocket, 302a, the air pocket leads to the chamber, 302b, the air pocket protects the chamber, 302c, the vent, 302d, the installation of generator mouthful, 303, the air pocket protects the piece, 304, the lock ring, 305, the casing, 306, the mounting bracket, 306a, the upper bracket, 306b, the lower bracket, 306c, the back support 307, the fastening nut.
Detailed Description
As shown in fig. 3 and 4, the automobile front bumper airbag 3 according to the present invention includes two gas generators 301, an airbag 302, an airbag protection sheet 303, a stay 304, a case 305, and a fastening nut 306, and the gas generators 301 are arranged in the left-right direction. The support ring 304 is mounted in the airbag 302, and the airbag 302 is folded. The airbag protection panel 303 is wrapped around the folded airbag 302 and attached to the studs of the support ring 304. The airbag 302, the airbag cover 303, and the stay 304 are connected to the housing 305 and the gas generator 301 and fixed to each other by fastening screws 306. The support ring 304, the air bag 302, the air bag protection sheet 303, the shell 305 and the gas generator 301 are installed from inside to outside through a stud fixedly arranged on the support ring and fixed through a fastening nut, and the shell 305 is provided with an installation support 306.
Referring to fig. 1 and 2, the housing 305 is mounted inside the front bumper 202 through a mounting bracket 306, and a weakening opening 202a is formed in a surface of the front bumper 202 corresponding to the front bumper of the automobile. The mounting bracket 306 includes an upper bracket 306a provided on the upper surface of the housing 305, a lower bracket 306b provided on the lower surface of the housing 305, and a rear bracket 306c provided on the rear surface of the housing 305. The upper support 306a and the lower support 306b are respectively three and arranged left, middle and right, and the back support 306c is two and arranged left and right. The surface of the upper bracket 306a positioned in the middle is provided with a round hole, and the surfaces of the upper brackets 306a positioned on the left side and the right side are provided with a long hole. The lower part of the lower bracket 306b is provided with a gap. The center of the surface of the back bracket 306c is provided with a screw hole. The mounting bracket adopting the structure is convenient for designing the corresponding front bumper structure and enables the front bumper structure and the front bumper structure to be better connected.
Referring to fig. 5, the air bag 302 has a two-chamber structure, which is an air bag air guide chamber 302a and an air bag protection chamber 302b. A vent hole 302c is arranged between the air bag air guide cavity 302a and the air bag protection cavity 302b, a generator mounting hole 302d is arranged at the position of the air bag air guide cavity 302a corresponding to the gas generator 301, and the gas generator 301 is connected with the corresponding generator mounting hole 302d.
As shown in fig. 1 and fig. 2, the pedestrian protection method for the automobile according to the present invention comprises the following steps:
1. the front bumper airbag 3 with the structure is arranged inside the automobile front bumper 202 and between two headlights of the automobile 2, and is fixedly connected with the front bumper 202 of the automobile 2 through the mounting bracket 306, and a weakening port 202a is formed in the surface of the automobile front bumper 202 corresponding to the position of the automobile front bumper;
2. when the automobile 2 runs at a speed of more than 25km/h, when a pedestrian 1 collides with the front bumper 202 within 50ms-100ms, the gas generator 301 of the front bumper airbag 3 installed inside the front bumper 202 is ignited after being detected by the vehicle-mounted radar and the speed measurement sensor;
3. then, the gas first fills the gas bag gas guide chamber 302a, and the gas bag protection chamber 302b is pushed out of the engine compartment of the automobile through the weakened port 202a of the front bumper of the automobile by the gas bag gas guide chamber 302a, and at the same time, the gas enters the gas bag protection chamber 302b through the vent port 302c between the gas bag gas guide chamber 302a and the gas bag protection chamber 302b, so that the gas bag protection chamber 302b is filled with the gas and is deployed between the leg portion 101 of the pedestrian and the front end of the front bumper 202 of the automobile and the engine compartment cover 201 of the automobile.
The above description is only exemplary of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A pedestrian protection method for an automobile is characterized by comprising the following steps: the method comprises the following steps:
1) the safety airbag of the front bumper of the automobile is arranged in the front bumper of the automobile, and a weakening port is formed in the surface of the front bumper of the automobile corresponding to the front bumper of the automobile;
2) when the automobile runs at the speed of more than 25km/h and a pedestrian collides with the front bumper of the automobile in 50-100 ms, the gas generator of the safety airbag of the front bumper of the automobile, which is arranged in the front bumper of the automobile, is ignited;
3) and then, inflating the air bag to enable the air bag to be flushed out of the weakening opening of the front bumper of the automobile and to be unfolded between the leg of the pedestrian and the front bumper of the automobile and the front end of the engine compartment cover of the automobile.
2. A pedestrian protection method for a vehicle according to claim 1, wherein: the automobile front bumper safety airbag in the step 1) is arranged inside a front bumper between two headlights of an automobile.
3. A pedestrian protection method for a vehicle according to claim 1, wherein: and 2) detecting that the pedestrian is about to collide with the front bumper of the automobile for 50-100 ms when the automobile runs at the speed of more than 25km/h through a vehicle-mounted radar and a speed measurement sensor.
4. A pedestrian protection method for a vehicle according to claim 1, wherein: and 3) the air bag is of a two-cavity structure and is respectively an air bag air guide cavity and an air bag protection cavity, when the air bag is inflated, air is filled in the air bag air guide cavity firstly, the air bag protection cavity is pushed out of the weakening port of the front bumper of the automobile through the air bag air guide cavity, and then enters the air bag protection cavity through the air vent between the air bag air guide cavity and the air bag protection cavity, so that the air bag protection cavity is filled with air and is unfolded between the leg of a pedestrian and the front bumper of the automobile and the front end of the engine compartment cover of the automobile.
5. An automobile front bumper safety airbag is characterized in that: comprises a gas generator, an air bag protection sheet, a support ring, a shell and a fastening nut; the air bag is folded, the folded air bag is wrapped by the air bag protection sheet and is connected with the support ring, the air bag protection sheet, the shell and the gas generator are fixed through the fastening nut and are installed from inside to outside by the bolts fixedly arranged on the support ring, and the shell is provided with the mounting support.
6. The automobile front bumper airbag according to claim 5, characterized in that: the shell is installed inside the front bumper of the automobile through the mounting bracket, and a weakening opening is formed in the surface of the front bumper of the automobile and corresponds to the position of the front bumper of the automobile.
7. The automobile front bumper airbag according to claim 5, characterized in that: the air bag is of a two-cavity structure and is respectively an air bag air guide cavity and an air bag protection cavity, an air vent is arranged between the air bag air guide cavity and the air bag protection cavity, a generator mounting port is arranged at the position, corresponding to the gas generator, of the air bag protection cavity, and the gas generator is connected with the generator mounting port of the air bag air guide cavity.
8. The automobile front bumper airbag according to claim 5 or 6, characterized in that: the mounting bracket comprises an upper bracket arranged on the upper surface of the shell, a lower bracket arranged on the lower surface of the shell and a back bracket arranged on the back surface of the shell.
9. The automobile front bumper airbag according to claim 8, characterized in that: the upper support and the lower support are respectively arranged in a left, middle and right mode, and the back support is arranged in a left and right mode.
10. The automobile front bumper airbag according to claim 9, characterized in that: the surface of the upper bracket positioned in the middle is provided with a round hole, and the surfaces of the upper brackets positioned on the left side and the right side are provided with a strip hole; the lower part of the lower bracket is provided with a notch; the center of the surface of the back support is provided with a screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911267672.8A CN111332244A (en) | 2019-12-11 | 2019-12-11 | Automobile pedestrian protection method and automobile front bumper safety airbag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911267672.8A CN111332244A (en) | 2019-12-11 | 2019-12-11 | Automobile pedestrian protection method and automobile front bumper safety airbag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111332244A true CN111332244A (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911267672.8A Pending CN111332244A (en) | 2019-12-11 | 2019-12-11 | Automobile pedestrian protection method and automobile front bumper safety airbag |
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| Country | Link |
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| CN (1) | CN111332244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684057A (en) * | 2022-03-29 | 2022-07-01 | 浙江吉利控股集团有限公司 | Safety airbag device and preparation method thereof |
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| DE102008051565A1 (en) * | 2008-10-15 | 2010-04-22 | Volkswagen Ag | Safety device for vehicle, particularly motor vehicle, has pre-crash-element, which is activated depending on collision parameter detected by pre-crash-sensor unit for energy absorption |
| CN202896508U (en) * | 2012-11-14 | 2013-04-24 | 栾松巍 | Automobile airbag bumper |
| CN103129510A (en) * | 2013-02-27 | 2013-06-05 | 浙江吉利汽车研究院有限公司杭州分公司 | Protecting device for preventing pedestrian shank diving and method thereof |
| CN204488722U (en) * | 2015-01-30 | 2015-07-22 | 北京汽车股份有限公司 | A kind of safety air bag and air bag device |
| CN205149778U (en) * | 2015-11-25 | 2016-04-13 | 重庆理工大学 | Automobile pedestrian safety protection system |
| CN206217838U (en) * | 2016-11-01 | 2017-06-06 | 北京汽车股份有限公司 | Front anticollision beam assembly and automobile |
| CN207000394U (en) * | 2017-06-05 | 2018-02-13 | 延锋百利得（上海）汽车安全系统有限公司 | A kind of knee airbag |
| CN209426717U (en) * | 2019-01-08 | 2019-09-24 | 宁波均胜汽车安全系统有限公司 | Pedestrian protection system and air bag for vehicle |
-
2019
- 2019-12-11 CN CN201911267672.8A patent/CN111332244A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008051565A1 (en) * | 2008-10-15 | 2010-04-22 | Volkswagen Ag | Safety device for vehicle, particularly motor vehicle, has pre-crash-element, which is activated depending on collision parameter detected by pre-crash-sensor unit for energy absorption |
| CN202896508U (en) * | 2012-11-14 | 2013-04-24 | 栾松巍 | Automobile airbag bumper |
| CN103129510A (en) * | 2013-02-27 | 2013-06-05 | 浙江吉利汽车研究院有限公司杭州分公司 | Protecting device for preventing pedestrian shank diving and method thereof |
| CN204488722U (en) * | 2015-01-30 | 2015-07-22 | 北京汽车股份有限公司 | A kind of safety air bag and air bag device |
| CN205149778U (en) * | 2015-11-25 | 2016-04-13 | 重庆理工大学 | Automobile pedestrian safety protection system |
| CN206217838U (en) * | 2016-11-01 | 2017-06-06 | 北京汽车股份有限公司 | Front anticollision beam assembly and automobile |
| CN207000394U (en) * | 2017-06-05 | 2018-02-13 | 延锋百利得（上海）汽车安全系统有限公司 | A kind of knee airbag |
| CN209426717U (en) * | 2019-01-08 | 2019-09-24 | 宁波均胜汽车安全系统有限公司 | Pedestrian protection system and air bag for vehicle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114684057A (en) * | 2022-03-29 | 2022-07-01 | 浙江吉利控股集团有限公司 | Safety airbag device and preparation method thereof |
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| PB01 | Publication | ||
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Application publication date: 20200626 |