A method for manufacturing a knee airbag cushion includes (a) preparing a panel having first and second panel surface parts and a virtual central line interposed between the first and second panel surface parts and is configured such that a distance from the virtual central line to the first panel s
A method for manufacturing a knee airbag cushion includes (a) preparing a panel having first and second panel surface parts and a virtual central line interposed between the first and second panel surface parts and is configured such that a distance from the virtual central line to the first panel surface part is different from a distance from the virtual central line to the second panel surface part, (b) folding the first panel surface part, (c) connecting portions of the first and second panel surface parts to each other, (d) folding an area of the virtual central line in the folding direction, and (e) forming a third sewing line to connect the first panel surface part to the second panel surface part.
대표청구항▼
1. A method for manufacturing a knee airbag cushion, the method comprising: (a) preparing a panel having first and second panel surface parts and a virtual central line interposed between the first and second panel surface parts, a distance from the virtual central line to the first panel surface pa
1. A method for manufacturing a knee airbag cushion, the method comprising: (a) preparing a panel having first and second panel surface parts and a virtual central line interposed between the first and second panel surface parts, a distance from the virtual central line to the first panel surface part being different from a distance from the virtual central line to the second panel surface part;(b) folding the first panel surface part in a first direction with respect to the virtual central line;(c) connecting portions of the first and second panel surface parts to each other at both sides of a peripheral portion of the virtual central line to form first and second sewing lines;(d) folding an area of the virtual central line in a second direction, the second direction being identical to the first direction; and(e) forming a third sewing line to connect the first panel surface part to the second panel surface part while overlapping with at least one of the first and second sewing lines. 2. The method of claim 1, wherein, in step (c), the first sewing line and the second sewing line are spaced apart from left and right edges of the first and second panel surface parts by a predetermined distance while extending from the virtual central line by a predetermined distance, and the second sewing line is connected to both edges of the first panel surface part and the second panel surface part in a state that the second sewing line is inclined with respect to end portions of the first sewing line. 3. The method of claim 2, wherein, in step (a), each of the first and second panel surface parts includes a flap extending in a lateral direction from both edges of the peripheral portion of the virtual central line, and the second sewing line is formed in the flap. 4. The method of claim 3, wherein a folding line is formed through step (d), and the second sewing line is provided at an edge of the flap such that the second sewing line is spaced apart from the folding line, which is formed in step (d), as far as possible in step (e). 5. A knee airbag cushion comprising: a panel having first and second panel surface parts and a virtual central line interposed between the first and second panel surface parts, the panel configured such that a distance from the virtual central line to the first panel surface part is different from a distance from the virtual central line to the second panel surface part, the first panel surface part folded in a first direction with respect to the virtual central line, the first and second panel surface parts connected to each other at both sides of a peripheral portion of the virtual central line to form first and second sewing lines, an area of the virtual central line folded in a second direction identical to the first direction, a third sewing line connecting the first panel surface part to the second panel surface part while overlapping with at least one of the first and second sewing lines. 6. The knee airbag cushion of claim 5, wherein the first sewing line is spaced apart from left and right edges of the first and second panel surface parts by a predetermined distance while extending from the virtual central line by a predetermined distance, and the second sewing line is connected to both edges of the first panel surface part and the second panel surface part in a state that the second sewing line is inclined with respect to end portions of the first sewing line. 7. The knee airbag cushion of claim 6, wherein both of the first and second panel surface parts includes a flap extending in a lateral direction from both edges of the peripheral portion of the virtual central line, and the second sewing line is formed in the flap. 8. The knee airbag cushion of claim 7, wherein the area of the virtual center line includes a folding line through step (d), and the second sewing line is provided at an edge of the flap such that the second sewing line is spaced apart from the folding line.
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이 특허에 인용된 특허 (32)
Sakakida Masafumi (Hiroshima) Inada Haruhiro (Hiroshima) Muramoto Hisao (Yamaguchi JPX), Air bag installation.
Sutherland, Daniel R.; Brown, Kevin M.; Christiansen, Kirk W.; Schultz, Dirk; Shirk, Bryan W.; Swann, Timothy A.; Erike, Eric C.; Mramor, Vincent J.; Van Wynsberghe, Roy D., Vehicle instrument panel assembly.
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