Can opener

A can opener, comprising a shell, a power mechanism, a transmission mechanism, and a cutting mechanism, wherein a fastener is provided on the shell, and the transmission mechanism comprises a main drive gear, an eccentric disc, a movable block, and a resilient component arranged between the eccentric disc and the movable block;

• the main drive gear and the eccentric disc are coaxially arranged, and a surface of the main drive gear facing the eccentric disc is provided with at least one linkage groove;
• the movable block is arranged on the eccentric disc in a liftable manner to insert into or withdraw from the at least one linkage groove;
• one side of the movable block is provided with a first inclined surface and a first vertical surface, and the other side is provided with a second vertical surface;
• and
• when the main drive gear rotates forward, the at least one linkage groove abuts against the first vertical surface to drive the eccentric disc to rotate forward;
• when the main drive gear rotates forward to a limit position, the fastener suppresses the movable block;
• when the main drive gear rotates forward beyond the limit position, a portion of an inner side wall of the at least one linkage groove slides relative to the first inclined surface, thus causing the movable block to retract from the at least one linkage groove so as to stop driving the eccentric disc to rotate forward;
• and
• when the main drive gear rotates backward, the at least one linkage groove abuts against the second vertical surface to drive the eccentric disc to rotate backward.