CLOSING MECHANISM FOR DRINK BOTTLE

摘要

Insulated drink bottle has an outer cylindrical casing (3) and an inner cylindrical lining (2) leaving an insulating cavity between the outer casing (3) and the inner lining (2). A cap (11) is screwed to the body of the bottle and sealed by an O-ring (6). An opening (13) is formed in a recess (1) of the cap (11) and the opening (13) is sealed by a plug (14) that is formed as an integral part of a moulded plastic spring member (4) with leaf spring portions (16) and mounting means (17) for securing the spring member (4) into the body of the cap (11). The spring member (4) incorporates first cam means with an inclined surface (18) for movement of the plug (14) against the biasing action of the leaf spring (16). A plunger (7) operable by a resilient button (5) is mounted in the cap (11) to permit transverse movement of the plunger (7) relative to the lid. The plunger (7) incorporates second cam means with an inclined cam surface (19) at one end of the plunger (7) to engage the inclined cam surface (18) on the spring means (4). Transverse movement of the plunger (7) across the cap (11) causes the first cam means (18) to slide down the inclined second cam means (19) causing the plug (14) to be moved downwardly against the biasing action of the spring (16) allowing liquid to pour through the opening (13).