Can lid

A can lid in which a tab for score breaking is fixed to a can lid main body, and an embossed portion, into which a fingertip is insertable, is provided in the vicinity of a rear end of a finger hook portion of the tab,

• wherein the embossed portion has a bottom surface and an inner peripheral wall surrounding the bottom surface;
• the inner peripheral wall has a first slope at a side opposite to the center of a can lid, a second slope at a central side of the can lid, and a pair of side slopes connecting to opposite ends of the first slope and the second slope,
• wherein when assuming a center line that passes through the center of the can lid and a center of the finger hook portion, the second slope is recessed in a valley shape having a portion thereof along a center line as a valley bottom,
• wherein the second slope extends toward a center of the can lid at least up to a position facing a back surface of the finger hook portion,
• wherein the can lid main body is provided with convex portions in the vicinity of a rear end of the finger hook portion of the tab at opposite sides of the embossed portion that is sandwiched therebetween,
• wherein the can lid main body has a circular center panel, which has a first panel surface at an outer peripheral edge side thereof and a second panel surface at an inner side of the first panel surface, the second panel surface being lower by one step than an inner peripheral edge of the first panel surface via a stepped portion, and the convex portions are provided on the first panel surface,
• wherein the planar shape of the root portion of each convex portion is a rounded triangular shape with three sides bulged outward, the middle portion thereof gradually transitions to a circular shape toward the apex thereof,
• wherein the top of each convex portion is displaced toward a detour portion side of the stepped portion so that it is arranged close to a corner portion of the tab,
• wherein the slope regions facing the corner portions of the tab are respectively located in the detour portions of the stepped portion, and
• wherein the detour portions are respectively continuous with the slope regions of the convex portions to constitute parts of the slopes of the convex portions and the detour portions spreading to the second panel surface side protrude so as to overlap the back surface side of the corner portions of the tab.