Anti-loosening structure of screw cap

Abstract

The utility model discloses a kind of anti-loosening structures of screw cap, including screw port, screw cap and plug mechanism, the outer thread is provided on the outside of screw port, first rib is also provided along the outer periphery of screw port, first rib is arranged above outer thread, the inner thread that is adapted with outer thread is provided on the inside of screw cap, second rib is arranged along the inner periphery of screw cap, screw cap is tightened downward by inner thread and outer thread, second rib can extrude first rib and move below first rib, screw cap is loosened upward, second rib can extrude first rib and move above first rib, plug mechanism is arranged between screw cap and screw port, when second rib is below first rib, plug mechanism blocks screw port.The utility model proposes a kind of anti-loosening structures of screw cap, screw cap is not dropped from screw port after loosening, prevent cosmetic leakage.

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