| 摘要 |
PROBLEM TO BE SOLVED: To provide a key structure, a keyboard structure and an operator structure which can achieve a click feeling approximate to a key touch feeling of an acoustic piano while saving costs for a device, with simple constitution.SOLUTION: A hinge part 33 which is constituted of the first hinge part 41 having rigidity and the second hinge part 42 formed to be curved or bent is provided between a depression part 31 and a fixed part 32. The second hinge part 42 is constituted so as to elastically deform from a state of being located at an initial position of projecting on a lower side of the hinge part 33 to a state of projecting on an upper side of the hinge part 33, and the second hinge part 42 bends downward by an elastic force thereof when a key is not depressed and the second hinge part 42 bends upward when the key is depressed. |
