초록 ▼

A component of a safety system in motor vehicles comprises a core which has end and side faces and is made of an explosive material. The component further comprises a jacket made of a solid semiconductor material that surrounds the explosive material on the side faces of the core, and an ignition el

A component of a safety system in motor vehicles comprises a core which has end and side faces and is made of an explosive material. The component further comprises a jacket made of a solid semiconductor material that surrounds the explosive material on the side faces of the core, and an ignition element situated between electric contact surfaces on one of the end faces of the core. The ignition element initiates an ignition of the explosive material when current flows through it. The explosive material consists of a porous fuel and of an oxidizer incorporated into the porous fuel. The porous fuel and the solid semiconductor are made of the same material.

대표청구항 ▼

The invention claimed is: 1. A component of a safety system in motor vehicles, said component comprising a core which has end and side faces and is made of an explosive material, a jacket made of a solid semiconductor that surrounds said explosive material on said side faces of said core, a membran

The invention claimed is: 1. A component of a safety system in motor vehicles, said component comprising a core which has end and side faces and is made of an explosive material, a jacket made of a solid semiconductor that surrounds said explosive material on said side faces of said core, a membrane provided on one of said end faces of said core, and an ignition element situated between electric contact surfaces on either said membrane or another one of said end faces of said core opposite to said membrane, wherein said ignition element initiating an ignition of said explosive material when current flows through said ignition element, said explosive material consisting of a porous fuel and of an oxidizer incorporated into said porous fuel, said porous fuel and said solid semiconductor being made of the same material. 2. The component according to claim 1, wherein said membrane is made of a semiconductor material and formed in one piece with said jacket said jacket and said membrane being made of the same semiconductor materials. 3. The component according to claim 1, wherein said membrane is made of a semiconductor material formed in one piece with said jacket, said jacket and said membrane being made of different semiconductor materials. 4. The component according to claim 2, wherein said membrane is situated between said ignition element and said explosive material. 5. The component according to claim 1, wherein said ignition element is in direct contact with said explosive material. 6. The component according to claim 1, wherein a cover is provided and one of said ignition element and said explosive material is sealed gas-tight and liquid-tight by said cover. 7. The component according to claim 6, wherein said cover has a membrane-like design and a solid layer made of said semiconductor material of said jacket is arranged on one of said end faces lying opposite said cover, said layer having a thickness higher than that of said cover and being formed in one piece with said jacket. 8. The component according to claim 6, wherein said cover and said membrane are situated on said end faces which are arranged opposite each other. 9. The component according to claim 6, wherein said ignition element and said cover are situated on the same end face. 10. The component according to claim 9, wherein said ignition element is situated on an inside of said cover. 11. The component according to claim 6, wherein said cover is made of a semiconductor material selected from the group consisting of silicon, glass, ceramic and metal. 12. The component according to claim 6, wherein said cover is made of semiconductor material, preferably silicon, and has feedthroughs as well as outer contact surfaces. 13. The component according to claim 1, wherein said ignition element is one of a semiconductor bridge and a thin-film element. 14. The component according to claim 1, wherein said porous fuel is a nanostructured material having a structure size of nanocrystals that varies between 2 nm and 100 nm and a porosity that varies between 10% and 98%. 15. The component according to claim 1, wherein said porous fuel is a nanostructured material having a structure size of nanocrystals that varies between 2 nm and 50 nm. 16. The component according to claim 1, wherein said fuel has a specific surface area of up to 1000 m2/cm3. 17. The component according to claim 1, wherein said fuel is porous silicon. 18. The component according to claim 1, wherein said oxidizer is incorporated into pores of said porous fuel and is selected from the group consisting of hydrogen peroxide, hydroxyl ammonium nitrate, organic nitro compounds and nitrates, metal nitrates, metal nitrites, metal chlorates, metal perchlorates, metal bromates, metal iodates, metal oxides, metal peroxides, ammonium perchlorate, ammonium nitrate and mixtures thereof. 19. The component according to claim 1, wherein said oxidizer is selected from the group consisting of alkali metal nitrates and alkali metal perchlorates, earth alkali metal nitrates and earth alkali metal perchlorates, ammonium nitrate, ammonium perchlorate and mixtures thereof. 20. The component according to claim 19, wherein said oxidizer is one of an alkali metal nitrate and earth alkali metal nitrate, optionally in a mixture with ammonium perchlorate. 21. The component of claim 1, wherein said membrane consists of silicon dioxide. 22. The component of claim 1, wherein said ignition element does not contact said jacket.