Diatonic accordion for use in traditional music or jazz, has left side case including face wall with frontal openings and plane internal partition, where partition forms angle ranging from specific degrees with end face of bellows

摘要

The accordion (1) has a right side case (3) and a left side case (4) respectively coupled at end faces (5, 6) of bellows (2). The right side case includes an external wall (12) forming a plane editing table (13) with openings (15). The left side case includes a face wall (23) with frontal openings and a plane internal partition (27) forming an editing table with openings (28). The table of the right side case forms angle (alpha) ranging from 20 to 50 degrees with one of two end faces of the bellows. The partition forms an angle (beta) ranging from 5 to 20 degrees with the other end face.