Back to results
US 6,305,150 B1Granted
Air bag folding, process and device for folding airbags
AssigneePetri AG
InventorAndrea Dietsch
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneePetri AG
InventorAndrea Dietsch
Estimating the term…
A way of folding an air bag used in an air bag module is disclosed, as well as a process and device for folding an air bag. The air bag is folded in the direction of an imaginary longitudinal axis, forming a ring with separate folds at its inner and outer sides, the imaginary longitudinal axis preferably extending through the filling mouth of the air bag. The folding process is characterized in that the empty air bag is stretched in the direction of an imaginary longitudinal axis and folded up in the direction of the longitudinal axis within a boundary, in particular a boundary having a ring-shaped cross-section. A device for folding the air bag has a molded part, at least one device for introducing the air bag into the molded part and at least one device for compressing the air bag inside the molded part. The advantage of the invention is that only a few process steps and a simple device are required for folding the air bag.
A method for folding an airbag for an airbag module, the airbag having a filling mouth, the method comprising, spreading out an empty airbag and holding the empty airbag at its filling mouth, stretching the empty airbag along a longitudinal axis running through the filling mouth to provide a stretched out empty airbag, providing an outer boundary surface, locating the outer boundary surface and the stretched out empty airbag relative to each other such that the stretched out empty airbag is located inside the outer boundary surface, and gathering the stretched out empty airbag inside the outer boundary surface along the longitudinal axis, wherein stretching includes drawing the spread out empty airbag into a sleeve-like shaping body that forms the outer boundary surface and at the same time introducing an inner ram into the airbag, wherein gathering includes compressing the airbag in the sleeve like shaping body with an outer ram after introducing the inner ram into the airbag.
A method for folding an airbag for an airbag module, the airbag having a filling mouth, the method comprising, spreading out an empty airbag, stretching the empty airbag along a longitudinal axis running through the filling mouth to provide a stretched out empty airbag, providing an outer boundary surface, locating the outer boundary surface and the stretched out empty airbag relative to each other such that the stretched out empty airbag is located inside the outer boundary surface, and gathering the stretched out empty airbag inside the outer boundary surface along the longitudinal axis, wherein stretching includes pressing the spread out empty airbag into a sleeve like shaping body that forms the outer boundary surface through a first ram, wherein gathering includes compressing the airbag with a second ram toward one end of the sleeve like shaping body, the second ram having an outer contour that corresponds to an inner contour of the sleeve like shaping body that forms the outer boundary surface.
A method for folding an airbag for an airbag module, the airbag having a filling mouth, the method comprising, spreading out an empty airbag and holding the empty airbag at its filling mouth on an inner ram such that the airbag hangs down at a side of the ram to provide a stretched out empty airbag, providing an outer boundary surface, locating the outer boundary surface and the stretched out empty airbag relative to each other such that the stretched out empty airbag is located inside the outer boundary surface, and gathering the stretched out empty airbag inside the outer boundary surface along the longitudinal axis,
A device for folding an airbag having a filling mouth, comprising:
A device for folding an airbag having a filling mouth, comprising:
A device for folding an airbag having a filling mouth, comprising:
A device for folding an airbag having a filling mouth, comprising:
Dependencies are inferred from the claim text.