Patent ID: 7065798

Claim:
A helmet shield provided with a positioning and adjusting device comprising: two buckling annuluses respectively extending from inner sides of each of two end portions of said helmet shield, each buckling annulus having a plurality of catching blocks formed around a periphery of said buckling annulus, each catching block being formed with a first slanted surface extending from a distal end of said buckling annulus toward said helmet shield; and a pair of buckling members respectively coupled to opposing sides of the helmet and extending therefrom for respective rotative engagement with said buckling annuluses, each of said buckling members having a plurality of block members formed around a periphery of said buckling member, each block member being formed with a second slanted surface extending from a distal end of said buckling member toward said helmet, said second slanted surface being complementary to said first slanted surface and said first slanted surfaces of said catch blocks being slidingly engaged with corresponding second slanted surfaces of said block member.