US 11,736,857 B2
Closed loudspeaker box, display device and method for testing closed loudspeaker box
Jiahong Jiang, Beijing (CN)
Assigned to K-TRONICS (SU ZHOU) TECHNOLOGY CO., LTD., Suzhou (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/298,111
Filed by K-tronics (Su Zhou) Technology Co., Ltd., Suzhou (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Sep. 11, 2020, PCT No. PCT/CN2020/114768
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2021/047636, PCT Pub. Date Mar. 18, 2021.
Claims priority of application No. 201910870063.5 (CN), filed on Sep. 12, 2019.
Prior Publication US 2022/0030352 A1, Jan. 27, 2022
Int. Cl. H04R 1/02 (2006.01); H04R 29/00 (2006.01); H04R 1/28 (2006.01); G01M 3/32 (2006.01)
CPC H04R 1/2826 (2013.01) [G01M 3/329 (2013.01); H04R 1/028 (2013.01); H04R 29/001 (2013.01); H04R 2499/15 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A closed loudspeaker box, comprising:
a housing;
a chamber, wherein the chamber is surrounded by the housing;
a through hole, wherein the through hole penetrates the housing and communicates with the chamber; and
a plug, wherein at least a part of the plug is inserted into the through hole,
wherein the plug comprises a plug main body and a vent hole penetrating the plug main body, and the vent hole communicates the chamber and a space outside the housing;
wherein the plug main body comprises a head, a neck, and a tail, the neck is located between the head and the tail in a direction along the central axis, and a size of the neck in the direction perpendicular to the central axis is smaller than a size of the head in the direction perpendicular to the central axis;
wherein the tail comprises a tapered portion and a cylindrical portion, the tapered portion is closer to the neck than the cylindrical portion, and a size of the tapered portion in the direction perpendicular to the central axis gradually decreases from the neck toward the cylindrical portion; and
wherein the vent hole penetrates the head, the neck and the tail in the direction along the central axis.