Patent ID: 8646647

Claim:
A straw-loosening-prevention lid comprising: a body; a straw part formed on the body and having a through hole formed through the body; multiple abutting fins formed on an annular edge around the through hole and annularly arranged separately; a straw hole surrounded by the abutting fins; a closing flake mounted pivotally in the straw hole; and multiple connecting contacts disposed between and connecting respectively the closing flake and the abutting fins; wherein one of the abutting fins connects to the closing flake directly, and the other abutting fins connect to the closing flake through the connecting contacts; and a fastening part, wherein the fastening part has an accessory hole formed through the body and separate from the straw hole of the straw part; a closing flake mounted pivotally in the accessory hole; multiple connecting contacts disposed between and connecting respectively the closing flake of the fastening part and an annular edge around the accessory hole; and a connecting segment disposed between and connecting respectively the closing flake of the fastening part and the annular edge around the accessory hole; wherein the connecting segment is larger in volume than each connecting contact of the fastening part.