Patent ID: 8002570

Claim:
Resin molded parts, comprising: a main body part; and belt plate shaped lock arms, connected to peripheral edges of the main body part with base ends connected to the peripheral edges of the main body part and ends protruding toward a front side vertical to the main body part, the lock arms having slits which are formed in intermediate parts of the lock arms in the direction of width of the lock arms and extend from the base ends of the lock arms to parts before the ends to ensure engaging parts in the ends of the lock arms, base ends of the slits being opened to end faces of the base ends of the lock arms; wherein a peripheral wall protruding toward a rear side vertical to the main body part is connected to the peripheral edge of the main body part, the lock arms are connected to the outer surfaces of the peripheral wall by connecting the base ends to the outer surfaces of the peripheral wall and the slits are continuously formed from the end faces of the base ends of the lock arms to the parts before the ends of the lock arms.