US 12,267,659 B2
Waterproof microspeaker
Gang Tae Kim, Gyeongsangnam-do (KR); Heung Woo Jeong, Gyeongsangnam-do (KR); Hyun Woo Jeong, Busan (KR); and Hyeon Sik You, Gyeongsangnam-do (KR)
Assigned to EM-TECH Co., Ltd., Gyeongsangnam-do (KR)
Filed by EM-TECH Co., Ltd., Gyeongsangnam-do (KR)
Filed on Apr. 20, 2023, as Appl. No. 18/136,962.
Claims priority of application No. 1020220051989 (KR), filed on Apr. 27, 2022.
Prior Publication US 2023/0353944 A1, Nov. 2, 2023
Int. Cl. H04R 9/02 (2006.01); H04R 1/02 (2006.01); H04R 5/04 (2006.01); H04R 7/12 (2006.01); H04R 13/00 (2006.01)
CPC H04R 9/025 (2013.01) [H04R 1/021 (2013.01); H04R 5/04 (2013.01); H04R 7/127 (2013.01); H04R 13/00 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A waterproof microspeaker, comprising:
a frame;
a magnetic circuit provided below the frame and including a yoke, an inner magnet, an outer magnet, and a top plate;
a voice coil located between the inner magnet and the outer magnet and configured to vibrate by a magnetic field of the magnetic circuit and mutual electromagnetic force when an electric signal is applied; and
a diaphragm housing provided above the frame,
wherein the diaphragm housing includes:
a sidewall portion provided above the frame and having a predetermined height;
an edge dome portion protruding upwardly or downwardly along an inner circumference of the sidewall portion; and
a diaphragm provided inside the edge dome, allowing an upper end of the voice coil to be fixed thereto, and configured to generate sound by vibration of the voice coil,
wherein the diaphragm includes a polymeric material including metal or plastic.