Metal-fixing material feedthrough, method for the production thereof and uses thereof
AssigneeSchott AG
InventorsReinhard Ranftl, Thomas Pfeiffer-Landshut, Susumu Nishiwaki, Ondrej Rousek
Life of this patent
Estimating the term…
Abstract
A metal-fixing material feedthrough for at least one of an airbag igniter or a belt pre-tensioner includes a main body having a through opening formed therein and at least one metal pin fused into the through opening in a vitreous or glass ceramic fixing material. A surface of the vitreous or glass ceramic fixing material is a freely fused surface and lies in a same plane as an end face of the at least one metal pin.
Claims21
A metal-fixing material feedthrough for at least one of an airbag igniter or a belt pre-tensioner, comprising:
- a main body having a through opening formed therein;
- and
- at least one metal pin fused into the through opening in a vitreous or glass ceramic fixing material, a surface of the vitreous or glass ceramic fixing material being a freely fused surface and lying in a same plane as an end face of the at least one metal pin, a mean roughness Ra of the surface of the vitreous or glass ceramic fixing material according to DIN EN ISO 4287 being less than 0.1 μm or being in a range of from 0.015 μm to 0.05 μm.
An ignition device, comprising:
- a metal-fixing material feedthrough comprising:
- a main body having a through opening formed therein;
- and
- at least one metal pin fused into the through opening in a vitreous or glass ceramic fixing material, a surface of the vitreous or glass ceramic fixing material being a freely fused surface and lying in a same plane as an end face of the at least one metal pin, a mean roughness Ra of the surface of the vitreous or glass ceramic fixing material according to DIN EN ISO 4287 being less than 0.1 μm or being in a range of from 0.015 μm to 0.05 μm.
A method for producing a metal-fixing material feedthrough having at least one metal pin that is fused into a through opening of a main body in a vitreous or glass ceramic fixing material that has a surface between the at least one metal pin and the main body, the method comprising:
- fusing the at least one metal pin into the vitreous or glass ceramic fixing material by heating the vitreous or glass ceramic fixing material, the heated fixing material being freely fused at the surface, a mean roughness Ra of the surface of the vitreous or glass ceramic fixing material according to DIN EN ISO 4287 being less than 0.1 μm or being in a range of from 0.015 μm to 0.05 μm.
A method for producing a metal-fixing material feedthrough comprising at least one metal pin that is fixed in a through opening of a main body in a vitreous or glass ceramic fixing material that has a surface, the method comprising:
- fixing the at least one metal pin in the vitreous or glass ceramic fixing material and the through opening such that the surface of the vitreous or glass ceramic fixing material is in a same plane as an end face of the at least one metal pin without grinding the surface of the vitreous or glass ceramic fixing material, the metal-fixing material feedthrough further comprising a conductor resting on the surface of the vitreous or glass ceramic fixing material.
Dependencies are inferred from the claim text.