US 11,758,313 B2
Electronic device
Ching-Ming Hung, New Taipei (TW); Sheng-Hsiung Tsai, New Taipei (TW); and Pei-Shuang Huang, New Taipei (TW)
Assigned to Chiun Mai Communication Systems, Inc., New Taipei (TW)
Filed by Chiun Mai Communication Systems, Inc., New Taipei (TW)
Filed on Jan. 28, 2022, as Appl. No. 17/587,098.
Claims priority of application No. 202110162187.5 (CN), filed on Feb. 5, 2021.
Prior Publication US 2022/0256268 A1, Aug. 11, 2022
Int. Cl. H04R 1/08 (2006.01)
CPC H04R 1/086 (2013.01) 18 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a circuit board comprising a first through hole;
a protective assembly, arranged on one side of the circuit board, comprising a first protective unit, a second protective unit, and a cavity communicating with the first through hole, wherein the first protective unit comprises a third through hole communicating with the cavity along a first direction, the second protective unit comprises a second through hole communicating with the first through hole, and comprises a supporting surface facing the third through hole, and a projection of the supporting surface is overlapped with a projection of the third through hole along the first direction; and
a protective film fixedly coupled to the protective assembly, the protective film arranged in the cavity to divide the cavity into a first cavity and a second cavity, wherein the first cavity is in communication with the second through hole, and the second cavity is in communication with the third through hole;
the circuit board is attached to the second protective unit, a projection of the first through hole is overlapped with a projection of the second through hole along the first direction.