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:
Mar. 26, 2019
Filed:
Apr. 06, 2016
Innovation Sound Technology Co., Ltd., Shenzhen, Guangdong, CN;
Innovation Sound Technology Co., Ltd., Shenzhen, CN;
Abstract
A moving-coil speaker includes: a magnetic path unit (); an annular frame () connected to exterior of the magnetic path unit () and used to carry a membrane (); and a PCB () installed on the frame () and used to solder thereon a component or provide electrical conduction. An outer perimeter of the frame () is 45 mm. A positioning pin () is disposed at a front side of the frame () and overlapping with a central axle extension line of the PCB (). Two sets of air vents () are provided on the frame on two sides of the positioning pin (). A tune paper () is pasted on the surface of the frame () on the two sides of the positioning pin (). A distance between the positioning pin () and the center of a first air vent at the starting place of each set of air vents () is equivalent to a distance between a side of the PCB () and the center of a second air vent at the last place of each set of air vents (). The Φ45 mm speaker is a balance between a Φ40 mm speaker and a Φ50 mm speaker, and can meet requirements with respect to structures and appearances for this type of earphones.