Patent ID: 11917353
Assignee: MERRY ELECTRONICS(SHENZHEN) CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An earbud, comprising:
a housing, comprising a sound outlet hole and a sound tuning hole, wherein the sound outlet hole is in acoustic communication with an ear canal of a human ear but does not contact the ear canal;
a speaker assembly, disposed in the housing to separate a space in the housing into a front cavity and a rear cavity; and
a partition, disposed in the front cavity of the housing to divide the front cavity into a first area close to the speaker assembly and a second area away from the speaker assembly, wherein the partition is between the first area and the second area, and the partition has a thickness and comprises a plurality of first through holes, wherein the first through holes pass through the partition to connect the first area with the second area to generate an acoustic mass effect, wherein the speaker assembly comprises a frame, a plurality of second through holes formed at the frame, and a diaphragm disposed at the frame, and a volume of a diaphragm space between the diaphragm and the frame of the second through holes is between 0.7 times and 1.3 times a volume of the first area.