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2. 发明公开

EP0314204A2 Piano key action 失效
标题翻译： Flügeltastenmechanik。
公开(公告)号：EP0314204A2
公开(公告)日：1989-05-03
申请号：EP88201670.2
申请日：1988-08-02
申请人： Finholm, William Stafford
发明人： Finholm, William Stafford
IPC分类号： G10C3/22
CPC分类号： G10C3/22
摘要： In a piano normally of a grand piano type, key action mechanism includes a combination of a fly lever distal end (50) acting on a hammer lever (20) through an intermediate thrust balancing lever (27), the thrust balancing lever (27) being pivoted at an intermediate portion (43) between proximal and distal ends thereof, and the thrust balancing lever distal end (42) having a change-of-direction roller (49) over which a non-resilient cord (48) is drawn, one end of the cord (48) being connected to an intermediate portion (47) of a wippen lever (25) pivoted at one end thereof, and an opposite end of the cord (48) being connected to a proximate end of a helical spring (46), and a distal end of the helical spring (46) being connected to an intermediate portion of the fly lever (26) of which the fly lever's lower portion is pivotably mounted on a distal end (34) of the wippen lever (25), such that when an upward portion of a laterally-extending proximal end (35) of the fly lever is raised to contact an abutment (36), further raising of the wippen's distal end (54) moves the thrust balancing distal end (42) upwardly as a result of the fly lever's distal end (50) pivotally moving laterally from beneath the thrust balancing lever's distal end (42), downward pressure on the change-of-direction roller (49) increasing as the fly lever's distal (50) end pivots laterally.
摘要翻译：在通常为大钢琴型的钢琴中，键动作机构包括通过中间推力平衡杆（27）作用在锤杆（20）上的飞杆远端（50）的组合，推力平衡杆（27）在其近端和远端之间的中间部分（43）枢转，并且推力平衡杆远端（42）具有变向方向辊（49），非弹性线（48）被拉出，绳索（48）的一端连接到在其一端枢转的摇摆杆（25）的中间部分（47），绳索（48）的相对端连接到螺旋弹簧的近端（46），并且所述螺旋弹簧（46）的远端连接到所述飞杆（26）的中间部分，所述飞杆的下部可枢转地安装在所述摇摆杆的远端（34）上 25），使得当飞杆的横向延伸的近端（35）的向上部分被升高到接触基座（36），由于飞杆的远端（50）从推力平衡杆的远端的下方侧向枢转地移动，使得连杆的远端（54）进一步升高，使推力平衡远端（42）向上移动（42），随着所述飞杆的远端（50）端部侧向枢转，所述改变方向辊（49）上的向下压力增加。

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