US 11,758,321 B2
Speaker box
Zhang Ren, Shenzhen (CN); and Zhiwei Zhong, Shenzhen (CN)
Assigned to AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed by AAC Microtech (Changzhou) Co., Ltd., Changzhou (CN)
Filed on Dec. 27, 2021, as Appl. No. 17/563,035.
Claims priority of application No. 202120880628.0 (CN), filed on Apr. 26, 2021.
Prior Publication US 2022/0345810 A1, Oct. 27, 2022
Int. Cl. H04R 1/28 (2006.01); H04R 1/34 (2006.01); H04R 1/02 (2006.01)
CPC H04R 1/345 (2013.01) [H04R 1/021 (2013.01); H04R 1/2803 (2013.01); H04R 2499/11 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A speaker box, comprising a housing having a receiving space and a sounding unit received in the receiving space, the sounding unit comprising a diaphragm configured to vibrate and sound, the diaphragm comprising a vibration portion, a suspension portion bending and extending from a periphery of the vibration portion to a direction away from the vibration portion, and a diaphragm fixing portion bending and extending from the suspension portion to a direction away from the vibration portion, wherein
the housing comprises a holder supporting the sounding unit, and a lower cover and an upper cover that are respectively arranged on two opposite sides of the sounding unit along a vibrating direction of the diaphragm;
the holder comprises a holder body spaced from and arranged opposite to the sounding unit, a holder extension portion bending and extending from a periphery of the holder body to the sounding unit, and a holder fixing portion bending and extending from the holder extension portion to a direction away from the holder body, and one side of the sounding unit provided with the diaphragm is supported by and fixed to the holder fixing portion; an orthographic projection of the vibration portion along the vibrating direction to the holder completely falls into the holder body, and the suspension portion is of an arc-shaped structure formed by recessing toward a direction away from the holder body;
the lower cover comprises a lower cover plate arranged on one side of the sounding unit away from the diaphragm, and a lower cover sidewall bending and extending from a periphery of the lower cover plate, the lower cover sidewall is provided with a sound outlet running therethrough, one side of the sounding unit close to the sound outlet abuts against the lower cover sidewall, the lower cover sidewall is spaced from the holder fixing portion, and one side of the holder close to the sound outlet is provided with an avoiding gap for avoiding the sound outlet;
the upper cover has one end fixed to the lower cover and the other end fixed to the holder and spacing the upper cover from the holder fixing portion; and
the sounding unit, the holder and the lower cover sidewall together define a front sound cavity, the diaphragm is received in the front sound cavity, and the sound outlet communicates the front sound cavity with the outside; the sounding unit and the lower cover together define a rear sound cavity, and the lower cover sidewall, the holder fixing portion, the holder extension portion and the upper cover together define an auxiliary rear sound cavity communicated with the rear sound cavity.