US 11,950,072 B2
Mid-range loudspeaker
Guoqiang Chai, Jiangsu (CN); Yuewu Shen, Jiangsu (CN); and Bo Gu, Jiangsu (CN)
Assigned to Suzhou Sonavox Electronics Co., Ltd., Jiangsu (CN)
Appl. No. 17/593,374
Filed by SUZHOU SONAVOX ELECTRONICS CO., LTD., Jiangsu (CN)
PCT Filed Oct. 17, 2019, PCT No. PCT/CN2019/111689
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/199554, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 201920435417.9 (CN), filed on Apr. 2, 2019.
Prior Publication US 2022/0150639 A1, May 12, 2022
Int. Cl. H04R 9/06 (2006.01); H04R 7/06 (2006.01); H04R 7/10 (2006.01); H04R 9/02 (2006.01)
CPC H04R 9/025 (2013.01) [H04R 7/06 (2013.01); H04R 7/10 (2013.01); H04R 9/06 (2013.01); H04R 2307/021 (2013.01); H04R 2307/025 (2013.01); H04R 2307/027 (2013.01); H04R 2307/029 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A mid-range loudspeaker comprising a frame, a diaphragm arranged on the frame, a magnetic circuit system arranged on the frame, and a voice coil connected to the diaphragm, wherein the diaphragm comprises a honeycomb plate having a front surface and a back surface, and covering films respectively covering the front surface and the back surface of the honeycomb plate, and the honeycomb plate is provided with a plurality of holes, wherein the diaphragm is composed of the honeycomb plate and the covering films, and the diaphragm is flat in shape as a whole, and an outer edge of the diaphragm is fixedly connected to the frame through a yoke ring; the magnetic circuit system comprises a U-yoke, a main magnetic steel, a front sheet, and a secondary magnetic steel, a middle part of the U-yoke is recessed and a peripheral edge extends upwards, an upper end portion of the U-yoke is fixedly connected to the frame, the main magnetic steel, the front sheet and the secondary magnetic steel are stacked on the bottom of the U-yoke and coaxially arranged, and the voice coil is inserted in a gap between the upper end portion of the U-yoke and the front sheet.