| 摘要 |
<p>A hinge device (1) used for foldable cell phone, wherein a pair of abutting members (5, 6) are forcibly rotated by the energizing force of an energizing means (7) to a neutral position where the center parts of the projected part (54) and the recessed part (64) of the abutting members are generally aligned with each other in circumferential direction, the projected part is brought into contact with the recessed part at both side parts of the abutting members in circumferential direction when the pair of abutting members are rotated to the neutral position, and the outer surface of the projected part and both side surfaces of the recessed part in circumferential direction should desirably be formed in an arc surface and an outwardly projected arc surface, respectively.</p> |
