Key for achieving chromatical portamento performance and pedal lever transmission mechanism thereof

Abstract

The invention discloses a key for achieving chromatical portamento performance and a pedal lever transmission mechanism thereof. The key comprises a white key representing a basic sound level and a black key representing a changed sound level, and the black key is superposed by a black key upper portion and a black key upper portion with the same width from top to bottom; the upper surface of theblack key lower portion is flush with the upper surface of the white key; a groove in the width direction is formed in the upper surface, near the rear portion, of the black key upper portion, and thebottom surface of the black key upper portion slides forward and backward in the longitudinal direction of the upper surface of the black key lower portion; the pedal lever transmission mechanism includes a pedal, a long rod, a cross rod, a transmission square shaft, a semitone button and a key pressing pad, the lower portion of the semitone button is placed in the groove in the black key upper portion, and the black key upper portion is swung forward and backward by the groove. The key can not only provide a chromatical portamento playing mode quickly, make the chromatical playing more convenient and smooth, but also completely restore a traditional playing mode, and be simple in the structure and convenient to operate.

Description

technical field [0001] The invention belongs to the field of piano machinery, and in particular relates to a piano key and a pedal lever transmission mechanism capable of realizing chromatic slide performance. Background technique [0002] Black and white keyboards are widely used, and pianos, electronic organs, electric pianos, organs, accordions, etc. all belong to this type of keyboard instruments. Except for the size and number of keyboards, the layout design of black and white keys of various keyboard instruments is basically the same. Therefore, in the absence of ambiguity, the present invention uses a representative standard 88-key piano as an example for expression. The 88-key piano includes seven complete octave ranges, and each range is a sound group. Facing the piano from left to right, they are respectively called the second group of big characters C2, the first group of big characters C1, the big group of C, the small group of c, and the small characters. One ...

AI Technical Summary

Problems solved by technology

All current keyboard instruments have this traditional design of black and white, high and low. Although it is not a defect, the design of black, high and white has always been flawed, which seriously hinders the smooth performance of chromatic slide, which greatly increases the Whether amateur or professional performers training pay

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