Title:
KEYED DEVICE
Document Type and Number:
Japanese Patent JP3653900
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic keyed instrument conformable to both automatic play mode and mechanical control mode with a simple structure.
SOLUTION: When a lifting cam 40 is rotated to the rights, a solenoid yoke 22 and a solenoid coil 23 are gradually raised interlockingly with it. When the lifting cam 40 makes contact with a stop pin 41, the rise is stopped. Thus, the relative position of the solenoid coil 23 and the plunger 21 can be varied, and an actuator can be driven in two directions. Namely, the plunger 21 is driven downward when the plunger 21 is protruded to the solenoid coil 23, while the plunger 21 is driven upward when the plunger 21 is recessed to the solenoid coil 23.
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Inventors:
Shigeru Matsumura
Application Number:
JP32570196A
Publication Date:
June 02, 2005
Filing Date:
December 05, 1996
Export Citation:
Assignee:
Yamaha Corporation
International Classes:
G10H1/00; G10B3/12; G10F1/02; G10H1/34; (IPC1-7): G10F1/02; G10B3/12
Domestic Patent References:
| JP4204697A |
Attorney, Agent or Firm:
川▲崎▼ 研二
Tomonori Yamashita
Tomonori Yamashita
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