MOVING-COIL SPEAKER

WIPO Patent Application WO/2017/173600

A1

A moving-coil speaker comprises: a magnetic path unit (1); an annular frame (3) connected to exterior of the magnetic path unit (1) and used to carry a membrane (2); and a PCB (4) installed on the frame (3) and used to solder thereon a component or provide electrical conduction. An outer perimeter of the frame (3) is 45mm. A positioning pin (5) is disposed at a front side of the frame (3) and overlapping with a central axle extension line of the PCB (4). Two sets of air vents (6) are provided on the frame on two sides of the positioning pin (5). A tune paper (7) is pasted on the surface of the frame (3) on the two sides of the positioning pin (5). A distance between the positioning pin (5) and the center of a first air vent at the starting place of each set of air vents (6) is equivalent to a distance between a side of the PCB (4) and the center of a second air vent at the last place of each set of air vents (6). The Φ45mm speaker is a balance between a Φ40mm speaker and a Φ50mm speaker, and can meet requirements with respect to structures and appearances for this type of earphones.

JPH08508390	INDUSTRIAL APPLICABILITY [Title of Invention] Double-terminated field coil actuator
JPH1056686	SPEAKER SYSTEM
JP2007104713	REGRESSIVELY HINGED SPIDER

YUEN SHUN MING (CN)

PCT/CN2016/078536

October 12, 2017

April 06, 2016

Click for automatic bibliography generation  

INNOVATION SOUND TECH CO LTD (CN)

H04R9/02; H04R9/06

CN205320282U	2016-06-15
CN103118319A	2013-05-22
CN104754486A	2015-07-01
CN203120148U	2013-08-07
CN103297891A	2013-09-11
CN104185102A	2014-12-03
JP2000165986A	2000-06-16
JP3198475U	2015-07-02

View/Download PDF      PDF Help

Previous Patent: METHOD AND SYSTEM FOR BOILER ENERGY SUPPLY CONTROL

Next Patent: TRAFFIC CONTROL METHOD AND APPARATUS IN SOFTWARE DEFINED NETWORK