公开(公告)号：US11670269B2

公开(公告)日：2023-06-06

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

CPC classification number: G10H1/346 ,  G10H1/0008 ,  G10H2220/221

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.

公开(公告)号：US11107449B2

公开(公告)日：2021-08-31

申请号：US16593801

申请日：2019-10-04

Applicant: CASIO COMPUTER CO., LTD.

Inventor： So Sato ,  Naoya Ishibashi ,  Kouji Oshima ,  Naoto Imamura

IPC: G10H1/34 ,  G10H1/00

Abstract: A electronic portable keyboard instrument includes a plurality of keys arranged in a first direction; a plurality of hammers respectively corresponding to the plurality of keys, each of the plurality of hammers including a force application point that is formed on one end side and that is pressed down when the corresponding key is pressed, a weight that is formed on another end side and imparts action weight to a pressed key, and a fulcrum formed between the force application point and the weight so that the hammer rocks in vertical directions about the fulcrum when the corresponding key is pressed; and a casing including at least one reinforcing member that is formed in a gap between the plurality of hammers so as to not be contacted by the weights of the hammers when the hammers rock about the respective fulcrums with a lateral positional shift in the first direction.