IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0866111
(2004-06-14)
|
우선권정보 |
FR-03 08477(2003-07-10) |
발명자
/ 주소 |
- Borg,Evrard
- D'Emmanuelle,Laurent
- Laspesa,Eric
- Nadeau,Jean Paul
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
13 |
초록
▼
A damping device used for motor vehicle safety, for damping the displacement of at least one part set in motion during a collision between a motor vehicle and an external object, the part being, for example, a bumper, a steering column or a bonnet of a motor vehicle, the device comprising an actuato
A damping device used for motor vehicle safety, for damping the displacement of at least one part set in motion during a collision between a motor vehicle and an external object, the part being, for example, a bumper, a steering column or a bonnet of a motor vehicle, the device comprising an actuator that is able to displace a piston and is characterized in that it includes a wire having one end connected to a fixed portion of the vehicle, the actuator, which is secured to the part to be damped, interacting with the wire in order to retard and then stop the part.
대표청구항
▼
The invention claimed is: 1. A damping device for damping displacement of at least one part set in motion during a mechanical collision between a motor vehicle and an external object, comprising: an actuator; a piston displaced by the actuator; and a wire having one end connected to a fixed portion
The invention claimed is: 1. A damping device for damping displacement of at least one part set in motion during a mechanical collision between a motor vehicle and an external object, comprising: an actuator; a piston displaced by the actuator; and a wire having one end connected to a fixed portion of the vehicle, wherein the actuator, which is secured to the part to be damped, interacts with the wire in order to retard and then stop the part, and the actuator is fastened to a support connected to the part to be damped, the support having two stops for guiding the wire and the support being connected to a fixed portion of the vehicle via a weakened zone. 2. The damping device according to claim 1, wherein the wire has one free end and possesses the ability to be deformed. 3. The damping device according to claim 2, wherein the wire is made of metal. 4. The damping device according to claim 1, wherein the guide stops consist of two rollers each having a groove, the wire passing within each of the two grooves. 5. The damping device according to claim 4, wherein the two stops are placed on the same side of the wire, and in that, when actuated, the piston of the actuator exerts a thrust on the wire between the two stops so as to imprint three successive folds on the wire. 6. The damping device according to claim 5, wherein the piston is displaced in a direction perpendicular to the imaginary straight line connecting the centres of each of the two stops. 7. The damping device according to claim 1, wherein the actuator is an actuator with a variable thrust action. 8. The damping device according to claim 7, wherein the actuator comprises a pyrotechnic gas generator, a combustion chamber and a sliding chamber in which the piston is able to be displaced under the effect of gas generated by the pyrotechnic gas generator. 9. The damping device according to claim 8, wherein the actuator comprises a blocking device employed after the actuator has been triggered in order to close the sliding chamber and, then to depressurize the combustion chamber. 10. The damping device according to claim 9, wherein the blocking device comprises a motor and a slide part that is able to be displaced, under the effect of the motor, in a sliding enclosure provided with a vent, the sliding enclosure and the combustion chamber being isolated from one another by a screen of material. 11. The damping device according to claim 10, wherein the slide part is hollow and has a cutting end, with the result that the displacement of the slide part in the sliding enclosure first leads to the screen of material being ruptured and then, substantially simultaneously, to the sliding chamber for the piston being blocked off and the combustion chamber being placed in communication with the sliding enclosure. 12. The damping device according to claim 8, wherein the actuator comprises a non-return device preventing the return of the piston towards the inside of the sliding chamber. 13. The damping device according to claim 10, wherein the motor of the blocking device is a pyrotechnic gas generator. 14. The damping device according to claim 7, wherein the gas generator of the actuator comprises a plurality of pyrotechnic charges which can be ignited independently of one another in such a way as to supply a variable quantity of gas. 15. Use of the damping device according to claim 1 for damping a bumper of the motor vehicle in the event of a head-on collision of the vehicle. 16. Use of the damping device according to claim 1, for protecting lower limbs of an occupant of the motor vehicle. 17. Use of the damping device according to claim 1, for damping the impact of a pedestrian against a bonnet of the motor vehicle. 18. Use of the damping device according to claim 1, for damping a steering column of the motor vehicle.
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