US 12,324,509 B2
Music rack unit-mounting structure of grand piano
Yasushi Terai, Hamamatsu (JP)
Assigned to KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO, Hamamatsu (JP)
Filed by KABUSHIKI KAISHA KAWAI GAKKI SEISAKUSHO, Hamamatsu (JP)
Filed on Mar. 7, 2024, as Appl. No. 18/599,035.
Claims priority of application No. 2023-042725 (JP), filed on Mar. 17, 2023.
Prior Publication US 2024/0306810 A1, Sep. 19, 2024
Int. Cl. A47B 23/00 (2006.01); G10C 1/04 (2006.01); G10C 3/00 (2019.01); G10G 7/00 (2006.01)
CPC A47B 23/004 (2013.01) [G10C 1/04 (2013.01); G10C 3/00 (2013.01); G10G 7/00 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A music rack unit-mounting structure of a grand piano, for removably mounting a music rack unit including a music rack and left and right music rack-holding boards arranged on left and right sides of the music rack, on a piano body of the grand piano,
wherein the left and right music rack-holding boards of the music rack unit include a left-side engagement portion and a right-side engagement portion provided at outer sides of the left and right music rack-holding boards in a left-right direction and extending in a front-rear direction, respectively,
wherein the piano body includes a left-side guide portion and a right-side guide portion provided with a predetermined spacing therebetween in the left-right direction, each extending in the front-rear direction, the left-side guide portion and the right-side guide portion being configured to be capable of being engaged with the left-side engagement portion and the right-side engagement portion, respectively, for guiding the left-side engagement portion and the right-side engagement portion in the front-rear direction, respectively, when the music rack unit is mounted on and removed from the piano body,
wherein the left-side engagement portion and the right-side engagement portion are each formed in a protruding shape protruding outward in the left-right direction or in a recessed shape open outward in the left-right direction,
wherein the left-side guide portion and the right-side guide portion are each formed in a recessed shape or a protruding shape so as to be fitted on or in an associated one of the left-side engagement portion and the right-side engagement portion,
wherein rear ends of the left-side engagement portion and the right-side engagement portion are configured to be capable of being placed on respective front ends of the left-side guide portion and the right-side guide portion from above when the music rack unit is mounted on the piano body from front, and by sliding the music rack unit rearward from a state of the rear ends of the left-side and right-side engagement portions placed on the front ends of the left-side guide portion and the right-side guide portion, the music rack unit is mounted on the piano body while the left-side engagement portion and the right-side engagement portion are fitted on or in the left-side guide portion and the right-side guide portion, respectively.