| 摘要 |
There is disclosed an inflatable airbag for a motor vehicle safety device. The airbag has discrete first (8) and second (23) inflatable chambers, each chamber being made from flexible sheet material (1, 14). The first chamber (8) has an inlet (9) for fluid connection to a source of inflating gas, and the second chamber (23) is fluidly connected to the first chamber (8) in a serial configuration via a connection having at least one flow port (32) arranged between the chambers such that upon deployment of the airbag the first chamber (8) is at least partially inflated before the second chamber (23) and the second chamber (23) becomes inflated by a flow of gas from the first chamber (8) via the at least one flow port (32). The second chamber (23) is configured to have an elongate inflated shape in cross-section through the at least one flow port (32), said elongate shape having a major axis (26) and a minor axis (27) orthogonal to the major axis. The airbag is characterised by said connection being configured such that the flexible sheet material (1) of said first chamber (8) is connected (28) to the flexible sheet material (14) of said second chamber (23) around said at least one flow port (32) and said at least one flow port (32) is spaced from both said major axis (26) and said minor axis (27) of the second chamber (23). |
