The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2016
Filed:
Oct. 28, 2014
Applicants:
Bin Cai, Shenzhen, CN;
BO Xiao, Shenzhen, CN;
Assignee:
AAC Technologies Pte. Ltd., Singapore, SG;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04R 9/06 (2006.01); H04R 1/02 (2006.01); H04R 9/04 (2006.01); H04R 9/02 (2006.01);
U.S. Cl.
CPC ...
H04R 1/025 (2013.01); H04R 1/021 (2013.01); H04R 9/025 (2013.01); H04R 9/045 (2013.01); H04R 9/06 (2013.01); H04R 2201/02 (2013.01); H04R 2400/11 (2013.01); H04R 2499/11 (2013.01);
Abstract
A speaker box is disclosed. The speaker box includes a housing including a bottom wall, and a speaker unit accommodated in the housing. The speaker unit includes a magnetic circuit unit having a lower plate, a magnet on the lower plate, an upper plate on the magnet, and a magnetic gap. The lower plate abuts against the bottom wall for forming a space communicated with the magnetic gap. Thus, the air pressure in the magnetic gap is balanced, and the low frequency sound performance is improved.