Patent ID: 11968496
Assignee: TDK CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 0:
1. An acoustic device comprising:
a piezoelectric element; and
a housing where the piezoelectric element is disposed, wherein
the housing includes
a main body portion including a vibrating portion including a vibrating surface where the piezoelectric element is disposed, and a plurality of support portions extending from the vibrating portion in a first direction intersecting the vibrating surface and disposed along an edge of the vibrating portion, and
a rib portion connected to the main body portion and extending in a third direction between a pair of the support portions when viewed from a second direction along the vibrating surface, the pair of the support portions facing each other and separated from each other in the third direction intersecting the second direction,

a hollow region defined by the vibrating portion and the plurality of support portions and an opening defined by the rib portion and the main body portion and communicating with the hollow region are formed in the housing, and
the rib portion covers a middle of the hollow region when viewed from the second direction.