HINGE DEVICE

摘要

A hinge device (1) used for foldable cell phone, comprising a pair of abutting members (5, 6), an energizing means (7) energizing the abutting members so that the abutting members are pressingly brought into contact with each other, a projected part (54) extending in the radial direction of one abutting member (5), and a recessed part (64) allowing the access of the projected part thereto formed in the other abutting member (6), wherein the recessed part (64) is formed of an inside recessed part and an outside recessed part on the radial inner and outer sides of the abutting members, and the inside recessed part is formed along the center line of the device and the outside recessed part is formed so that the width thereof is increased from the inside recessed part to the outside so that the side surface of the recessed part is generally formed in the shape of chevron.