| 摘要 |
PURPOSE: To enhance sound insulating performance by decreasing the front surface vibration of a resin-mode cover, and decreasing noise to be generated by the vibration of the cover itself in the resin-mode cover. CONSTITUTION: In a resin-mode cover 1 composed of a cover main body part 3 and an attaching part 4, the cover main body part 3 is made of fiber reinforced material 8 and resin. The attaching part 4 is constituted of an inner layer 5 formed by hollow lightweight fillers 7 and resin, and front surface layers 6 formed on both surfaces of the inner layer 5, and made of fiber reinforced materials 8 and resin. |
