Regulating button mechanism for easily regulating escape timing, silent system cooperative therewith and keyboard musical instrument equipped therewith

A silent system incorporated in a keyboard musical instrument having plural keys, plural action mechanisms respectively connected to said plural keys and arranged in a lateral direction and plural beating members respectively actuated by said plural action mechanisms through first escapes of jacks forming parts of said plural action mechanism for striking plural vibratory members when first portions of said jacks are brought into contact with a primary regulating member, comprising:

• a stopper provided for said plural beating members, and changed between a free position provided out of trajectories of said plural beating members for permitting said plural beating members to strike said plural vibratory members and a blocking position provided on said trajectories for causing said plural beating members to rebound thereon before striking said plural vibratory members,
• a secondary regulating member changed between an active position provided on trajectories of second portions of said jacks and related to said blocking position and an inactive position provided out of said trajectories of said second portions and related to said free position, and producing second escapes faster than said first escapes when said second portions are brought into contact therewith;
• a supporting member provided in the vicinity of said secondary regulating member, and connected to a stationary member of said keyboard musical instrument;
• a retaining member connected to said secondary regulating member, and movably supported by said supporting member;
• and
• an adjusting mechanism connected between said supporting member and said retaining member for changing a relative position between said supporting member and said retaining member, and having a manipulator projecting into a free space formed in said keyboard musical instrument and manipulated by a tuner for varying a distance between said second portions and said secondary regulating member through changing said relative position.

A keyboard musical instrument having a fore-and-aft direction and a lateral direction perpendicular to said fore-and-aft direction, comprising:

• a keyboard having plural keys selectively moved by a player positioned in front of said keyboard;
• plural action mechanisms provided over a rear portion of said keyboard so as to create a free space over a front portion of said keyboard, connected to said keys so as to be selectively actuated by the keys moved by said player, and having jacks and a primary regulating member for producing first escapes of said jacks when first portions of said jacks are brought into contact with said primary regulating member;
• plural beating members respectively driven for rotation by said plural action mechanisms when said first escapes or second escapes are produced;
• plural vibratory members respectively struck with said plural beating members at the end of said rotation;
• a secondary regulating member opposed to second portions of said jacks, and producing said second escape when said second portions are brought into contact therewith;
• a supporting member connected to a stationary member;
• a retaining member connected to said secondary regulating member, and movably supported by said supporting member so as to change a relative position therebetween;
• and
• an adjusting mechanism connected between said secondary regulating member and said supporting member for changing said relative position, and having a manipulator projecting into said free space and manipulated for changing a distance between said second portions and said secondary regulating member by changing said relative position.

A keyboard musical instrument having a fore-and-aft direction and a lateral direction perpendicular to said fore-and-aft direction, comprising:

• a keyboard having plural keys arranged in said lateral direction, and selectively moved by a player positioned in front of said keyboard;
• plural action mechanisms arranged in said lateral direction over a rear portion of said keyboard so as to create a free space over a front portion of said keyboard, connected to said keys so as to be selectively actuated by the keys moved by said player, and having jacks and a primary regulating member for producing first escapes of said jacks when first portions of said jacks are brought into contact with said primary regulating member;
• plural hammers arranged in said lateral direction over said plural action mechanisms, and respectively driven for rotation by said plural action mechanisms when said first escapes or second escapes are produced;
• plural strings respectively struck with said plural hammers at the end of said rotation;
• a secondary regulating member extending in said lateral direction in such a manner as to be opposed to second portions of said jacks, and producing said second escape when said second portions are brought into contact therewith;
• a supporting member connected to a stationary member;
• a retaining member fixed to said secondary regulating member, and rotatably supported by said supporting member so as to change a relative angular position therebetween;
• and
• an adjusting mechanism including
• a stationary bracket fixed to said supporting member,
• a movable member rotatably connected to said retaining member in such a manner as to have a rotational axis offset from a rotational axis of said retaining member and
• a manipulator extending in said fore-and-aft direction, connected at one end thereof to said rotatably member and engaged at the other end portion thereof with said stationary bracket in such a manner as to project from said stationary bracket into said free space.