CLOSURE LID MADE OF PLASTIC

摘要

PURPOSE: To manufacture a closure cover achieving the improved sealing action despite of its simple structure. CONSTITUTION: A plastic closure cover 1 is provided with a cover plate with a plurality of spring fingers 3 disposed thereon and a latch area on which the spring fingers 3 are engaged with the rear side of a substrate opening at an interval respectively from the lower side of a cover plate 2. Respective spring fingers 3 are constituted of two elastic webs 6 and 7, and a latch element 8 formed as an elastic web similarly is disposed between the webs 6 and 7, and the latch element 8 is formed into the hook shape by a connecting area 9 protruded with angle to the elastic webs 6 and 7 and a latch area 5 formed with the angle formed continuously to the connecting area.