公开(公告)号：US20210366451A1

公开(公告)日：2021-11-25

申请号：US17392524

申请日：2021-08-03

Applicant: CASIO COMPUTER CO., LTD.

Inventor： So SATO ,  Naoya ISHIBASHI ,  Kouji OSHIMA ,  Naoto IMAMURA

IPC: G10H1/34 ,  G10H1/00

Abstract: An electronic portable keyboard instrument includes: a lower casing that includes a plurality of supporting members that support the fulcrums of a plurality of hammers, and a plurality of reinforcing members arranged in the first direction, each reinforcing member having a shape of rib that is erected upward from the lower casing and that is running in a length direction of the keys, wherein each of the plurality of supporting members sandwiches, from sides in the first direction, the corresponding hammer at the fulcrum so as to restrict movement of the hammer in the first direction, and wherein each of the reinforcing members is disposed in a gap between adjacent hammers, and a portion of the reinforcing members that corresponds to the weights of the adjacent hammers in position is lower than any other portions of the reinforcing member to avoid contacting the weights of the adjacent hammers.