Patent ID: 11962969
Assignee: GOERTEK INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An acoustic device, comprising:
a sound generating unit comprising a vibration diaphragm, wherein the acoustic device is provided with a sound outlet, and sound waves at a front side of the vibration diaphragm radiates to outside through the sound outlet; and
an enclosed closed cavity formed at a rear side of the vibration diaphragm, and the closed cavity is divided into a first closed cavity and a second closed cavity by a partition part, wherein at least a portion of the partition part can be flexibly deformed, and the first closed cavity is adjacent to the vibration diaphragm, and the second closed cavity is far away from the vibration diaphragm, and a volume of the second closed cavity is larger than a volume of the first closed cavity,
when the vibration diaphragm vibrates, an internal sound pressure of the first closed cavity changes, so a flexible deformation part of the partition part deforms with the change of the sound pressure in the first closed cavity, so as to flexibly adjust the volume of the first closed cavity; and the second closed cavity encloses sound waves generated by the flexible deformation part during the deformation into the second closed cavity, and
at least a part of an electronic apparatus housing for mounting the acoustic device is used for forming the first closed cavity and/or the second closed cavity,
wherein the acoustic device comprises a first housing, the sound generating unit is mounted on the first housing to form a sound generating assembly, and the first closed cavity is formed between the vibration diaphragm of the sound generating unit and the first housing,
wherein the acoustic device comprises a second housing, the sound generating assembly is mounted in the second housing, and the second closed cavity is formed between the second housing and the first housing,
wherein a portion of the first housing forms the partition part,
wherein the second housing is the electronic apparatus housing, and
wherein the sound generating unit and the flexible deformation part are arranged on the same side of the first housing and are arranged in a staggered manner.