US 11,671,742 B2
Loudspeaker apparatus
Chaowu Li, Shenzhen (CN); and Yongjian Li, Shenzhen (CN)
Assigned to SHENZHEN SHOKZ CO., LTD., Shenzhen (CN)
Filed by SHENZHEN SHOKZ CO., LTD., Guangdong (CN)
Filed on Mar. 29, 2022, as Appl. No. 17/657,125.
Application 17/657,125 is a continuation of application No. 17/139,076, filed on Dec. 31, 2020, granted, now 11,310,582.
Application 17/139,076 is a continuation of application No. PCT/CN2019/102393, filed on Aug. 24, 2019.
Claims priority of application No. 201910009927.4 (CN), filed on Jan. 5, 2019.
Prior Publication US 2022/0225002 A1, Jul. 14, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 1/10 (2006.01); H04R 1/02 (2006.01); H04R 31/00 (2006.01); H04R 9/02 (2006.01); H04R 1/44 (2006.01)
CPC H04R 1/105 (2013.01) [H04R 1/023 (2013.01); H04R 1/026 (2013.01); H04R 1/1008 (2013.01); H04R 1/1041 (2013.01); H04R 1/1058 (2013.01); H04R 1/1091 (2013.01); H04R 1/44 (2013.01); H04R 9/025 (2013.01); H04R 31/00 (2013.01); H04R 1/1016 (2013.01); H04R 1/1025 (2013.01); H04R 2201/10 (2013.01); H04R 2460/13 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A loudspeaker apparatus, comprising:
an ear hook including a first plug end and a second plug end;
a core housing for accommodating an earphone core, the core housing being fixed to the first plug end, wherein
the core housing including a housing panel facing human body and a housing back panel opposite to the housing panel, and
the vibration of the earphone core drives the housing panel and the housing back panel to vibrate, the vibration of the housing panel having a first amplitude, the vibration of the housing back panel having a second amplitude, wherein when vibration frequencies of the housing panel and the housing back panel are equal to or greater than 1000 Hz, a ratio of the first amplitude to the second amplitude is within a range of 0.5 to 1.5; and
a circuit housing for accommodating a control circuit or a battery, the circuit housing being fixed to the second plug end, the control circuit or the battery driving the earphone core to vibrate to generate a sound.