Fallboard arrangement for keyboard instrument and opening and closing device for fallboard

Abstract

A fallboard arrangement for a keyboard instrument, which makes it possible to make flat the entire upper surface of a keyboard instrument in a closed state. A fallboard back section is immovably provided in a rear part of the body, in a horizontal state. A fallboard is movable between a closed position where it is forward of the fallboard back section and has an upper surface thereof made flush with that of the fallboard back section in a state closing the performance section and an open position where it is upward of the fallboard back section so as to open the performance section. A hinge connects the fallboard to the fallboard back section in a manner pivotally movable between the closed position and the open position and is disposed downward of the fallboard in the closed position and the upper surface of the fallboard back section.

Description

technical field [0001] The present invention relates to a keyboard cover device applied to a keyboard musical instrument such as an electronic piano, the keyboard musical instrument having a keyboard cover configured to pivotally move to open and close a performance part including a keyboard, and to a keyboard cover opening and closing device , which is configured to open and close a keyboard cover attached to the instrument body in a manner pivotally movable between a fully open position for opening the keyboard and a fully closed position for closing the keyboard. Background technique [0002] Conventionally, this type of keyboard cover device has been known, for example, as disclosed in Japanese Patent Laid-Open Publication No. 2003-177738 filed by the present applicant. For example, a keyboard cover device applied to an upright piano includes a keyboard cover rear section, and a keyboard cover pivotally connected to a front end of the keyboard cover rear section via a hi...

AI Technical Summary

Problems solved by technology

[0008] However, because conventional opening and closing devices use only a single rotary damper as described above, the keyboard cannot be sufficiently actuated just before the keyboard cover is fully opened or closed cover, and therefore there is still the concern that the keyboard cover hits strongly on the upper panel of the keyboard instrument when the keyboard cover is opened or on the keystop of the keyboard instrument when the keyboard cover is closed

And, also in the initial stage of the opening or closing operation of the keyboard cover, the braking force of the rotation damper acts on the keyboard cover, which hinders the smooth opening or closing operation of the keyboard cover.

Images