发明名称 KEYBOARD DEVICE
摘要 PROBLEM TO BE SOLVED: To provide a keyboard device, with which keys and springs for key recovery can be easily assembled. SOLUTION: A first semicircle part 61a of a first terminal part 61 of a recovery spring 32 is locked in a support side spring lock part 14, the spring 32 is made into temporarily locked state by fitting a temporary spring lock part 73 into a long hole 63 and after a white key 30 is placed while respectively abutting a drooping piece 30a to a lower limit stopper 52 and a groove part 35 to a first guide part 75a, when the white key 30 is pushed down while being energized a little backward, the groove part 35 is slid on the first guide part 75a. At the same time, a second semicircle part 62a of a second terminal part 62 of the spring 32 is engaged in a second guide part 33 and locked by a spring holding part 31 soon. Further, when the white key 30 is pushed in, a rear terminal part 30c is attached to a key supporting part 71 and at the same time, the spring 32 is curved and supported by the lock part 14 and the spring holding part 31 in the state of point-contact of both the terminal parts.
申请公布号 JP2003029758(A) 申请公布日期 2003.01.31
申请号 JP20010217872 申请日期 2001.07.18
申请人 YAMAHA CORP 发明人 KITAJIMA MITSURU;SATO TAKESHI
分类号 G10B3/12;G10H1/34 主分类号 G10B3/12
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