| 主权项 |
1. A knee protection airbag apparatus comprising:
a case; an airbag folded and received in the case; and an inflator that is received in the case and that supplies an inflation gas to the airbag, wherein the case has a box shape including a bottom wall portion, a tubular peripheral wall extending from a peripheral edge of the bottom wall portion, and a protruding opening through which the airbag is capable of protruding, the inflator includes a gas discharging port arranged on a first end side of the inflator in an axial direction to discharge the inflation gas, and a connection port portion arranged on a second end side of the inflator to be connected to a connector connected with a lead wire extending from an airbag operation circuit, the inflator has a bolt arranged to protrude in a direction perpendicular to the axial direction, and the inflator is attached to the case by protruding the bolt from the case and fastening a nut to the bolt, a connector opening is formed on a side wall of the peripheral wall portion of the case at a side of the connection port portion of the inflator, and the connection port portion is exposed through the connector opening so that the connector is connected to the connection port portion of the inflator attached to the case, a protruding piece that prevents the inflator from falling-out is formed on a peripheral edge of the connector opening, a guide portion is formed at a location on the peripheral edge of the connector opening, which is located more toward an inside of the case in the axial direction than the protruding piece, and an outer peripheral part of the connection port portion side of the inflator slides on the guide portion when the inflator is attached to the case so that the inflator is guided by the guide portion to a location where falling-out of the inflator is prevented by the protruding piece, the guide portion includes guide surfaces arranged to oppose each other in a direction perpendicular to the axial direction of the inflator, and the guide surfaces are arranged so that a spacing distance therebetween is decreased toward a moving direction of the inflator when fastening the nut to the bolt, and the guide portion supports the inflator in a state that the inflator contacts the protruding piece. |
