| 摘要 |
PURPOSE: To improve the operability of a horn switch and prevent an air bag door from flying away by providing the internal surface of an air bag cover with a projection row along a tear line in such a state as in contact with a horn switch surface, and keeping the end of the row faced to a hinge section. CONSTITUTION: A projection 15 on the internal surface of an air bag cover 11 continues from a hinge section 13 to the neighborhood of a center tear line 12b along a tear line 12a. In addition, the projection 15 has a function of reinforcing the section 13 and smoothly jointing the whole of a door 14. Thus, when the door 14 is opened and an air bag 21 comes out of the tear line 12 during the operation of an air bag device 10, the door 14 is prevented from flying away, regardless of an impact due to air bag exposure and subsequent inflation. Furthermore, even when the cover 11 is pressed in a normal condition, the projection 15 does not undergo flexed deformation, because of the heavy wall thickness thereof. Also, an area between adjacent projections 16 and 17 has thin wall thickness and is easily deformed. As a result, projection stroke is provided and the operability of a horn switch is improved. |
