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US 10,589,709 B2Granted
Inflator, method of manufacturing the same and module including said inflator
AssigneeTRW Airbag Systems GmbH
InventorsSebastian Bierwirth, Achim Hofmann, Hans-Peter Neumayer, Dieter Spitzenberger, Franz Fuerstenberger, Hannes Nuiding, Dieter Leier, Georg Schoenhuber, Joerg Friedrich
Life of this patent
Estimating the term…
Abstract
An inflator as well as a method of manufacturing an inflator, a module including an inflator and an airbag module. In an inflator, especially for a protective device in a vehicle, comprising plural components a sealant is applied in the area of abutting components, especially a sealant which adheres to both abutting components.
Claims15
An inflator comprising:
- a first component (112), the first component being an inflator housing and a second component (114) connected to the first component (112) by an injected plastic base (116) by at least partially surrounding both components (112, 114) by injection molding, the second component being a pre-fabricated igniter,
- wherein the first component (112) has an adhesive film (142) applied before injection molding in a contact area (140) with the plastic base (116), the adhesive film comprising a plastic film (144) and an adhesive layer (146),
- wherein the first component (112) comprises an orifice (120) through which the second component (114) extends, the plastic base (116) extending through the orifice (120) and covering the first component (112) so that a circumferential edge (122) of the orifice (120) is embedded in the plastic base (116), wherein the adhesive film (142) is applied to the first component (112) on a contacting area (140) that extends circumferentially around the edge (122) of the orifice (120) on both an inner and outer surface of the first component,
- wherein the materials of the plastic film (144) and the plastic base (116) are selected such that during injection-molding the plastic base (116), the plastic film (144) at least partially melts and combines with the plastic base (116), and
- wherein the adhesive layer (146) is formed of a material that adheres the plastic film (144), and the plastic base (116) connected thereto, to the first component (112), the adhesive layer (146) being elastically or plastically deformable so as to form a bonding bridge that compensates for different thermal expansion coefficients between the materials of the first component (112) and the plastic base (116).
2 more elements
A method for manufacturing an inflator (10) for a vehicle occupant restraint system comprising the steps of:
- providing a first component (112) containing metal and/or plastic material and/or ceramic material, the first component being an inflator housing,
- providing a second component (114) to be connected to the first component (112) the second component being a pre-fabricated igniter,
- applying an adhesive film (142) to the first component (112) in a connecting area, the adhesive film comprising a plastic film (144) and an adhesive layer (146),
- positioning the second component (114) relative to the first component (112), and
- jointly surrounding at least partially the first and second components (112, 114) by injection molding, thereby forming a plastic base (116) connecting the components (112, 114),
- wherein the first component (112) comprises an orifice (120) through which the second component (114) extends, the plastic base (116) extending through the orifice (120) and covering the first component (112) so that a circumferential edge (122) of the orifice (120) is embedded in the plastic base (116), wherein the adhesive film (142) is applied to the first component (112) on a contacting area (140) that extends circumferentially around the edge (122) of the orifice (120) on both an inner and outer surface of the first component,
- wherein the materials of the plastic film (144) and the plastic base (116) are selected such that during injection-molding the plastic base (116), the plastic film (144) at least partially melts and combines with the plastic base (116), and wherein the adhesive layer (146) is formed of a material that adheres the plastic film (144), and the plastic base (116) connected thereto, to the first component (112), the adhesive layer (146) being elastically or plastically deformable so as to form a bonding bridge that compensates for different thermal expansion coefficients between the materials of the first component (112) and the plastic base (116).
4 more elements
Dependencies are inferred from the claim text.