Abstract: A hinge mechanism for rotatably coupling a flip element to a body portion of an electronic device has a pivot member provided at an end of the flip element with two shafts at the opposite ends thereof, a retaining member disposed in the body portion, and a cover. The retaining member has two abutments with a pair of first grooves defined in the bottom surfaces thereof for the shafts riding therein. First ladderlike rims are formed along edges of the retaining member. The cover has two shoulders with a pair of second grooves defined in the top surfaces thereof. Second ladderlike rims are formed along edges of the cover. The first ladderlike rims engage with the second ladderlike rims to secure the cover on the retaining member, and the first grooves and the second grooves are aligned to define shaft holes for the shafts rotating therein.

Abstract: A hinge mechanism for rotatably coupling a flip element to a body portion of an electronic device has a pivot member provided at an end of the flip element with two shafts at the opposite ends thereof, a retaining member disposed in the body portion, and a cover. The retaining member has two abutments with a pair of first grooves defined in the bottom surfaces thereof for the shafts riding therein. First ladderlike rims are formed along edges of the retaining member. The cover has two shoulders with a pair of second grooves defined in the top surfaces thereof. Second ladderlike rims are formed along edges of the cover. The first ladderlike rims engage with the second ladderlike rims to secure the cover on the retaining member, and the first grooves and the second grooves are aligned to define shaft holes for the shafts rotating therein.