US 12,413,903 B2
External member, external member molding method, and electronic instrument
Hiroki Akai, Hino (JP); Hirokatsu Katoh, Kawasaki (JP); Takahiro Moriya, Kokubunji (JP); and Yoshihiko Sato, Akishima (JP)
Assigned to CASIO COMPUTER CO., LTD., Tokyo (JP)
Filed by CASIO COMPUTER CO., LTD., Tokyo (JP)
Filed on Dec. 16, 2022, as Appl. No. 18/082,840.
Claims priority of application No. 2021-207674 (JP), filed on Dec. 22, 2021.
Prior Publication US 2023/0199376 A1, Jun. 22, 2023
Int. Cl. H04R 1/34 (2006.01); H04R 1/02 (2006.01)
CPC H04R 1/345 (2013.01) [H04R 1/023 (2013.01); H04R 1/025 (2013.01); H04R 2201/029 (2013.01); H04R 2400/11 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An external member comprising:
a frame portion;
a first sloping portion; and
a second sloping portion,
wherein the frame portion comprises multiple sound radiation holes including at least a first sound radiation hole, a second sound radiation hole, and a third sound radiation hole,
wherein the first sloping portion is disposed within an area of the first sound radiation hole and comprises a first sloping surface which is inclined with respect to a thickness direction of the frame portion towards a first direction not parallel to the thickness direction of the frame portion,
wherein the second sloping portion comprises a second sloping surface which is disposed within an area of the second sound radiation hole and which is inclined with respect to the thickness direction of the frame portion towards a second direction which differs from the first direction and which is not parallel to the thickness direction of the frame portion,
wherein each of the first sloping portion and the second sloping portion extends between an inner surface and an outer surface of the frame portion,
wherein the third sound radiation hole comprises a parallel surface which is parallel to the thickness direction of the frame portion, and
wherein at least one of the first sloping surface and the second sloping surface does not overlap with the parallel surface of the third sound radiation hole along the thickness direction of the frame portion.