Speaker with earphone function

Details Speaker with earphone function Speaker with earphone function

2009-03-04

2011-10-04

Tran, Anh (Department: 2819)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C381S380000, C381S384000

Reexamination Certificate

active

08032191

ABSTRACT:
A speaker with an earphone function comprises a main body, magnet, washer, voice coil, diaphragm, front cover, rear cover and sound tube; it is characterized in that a conventional earphone housing is integrated with a housing of a speaker unit used in an earphone to enable the main body to be used as the speaker housing concurrently so as to save the production material and cost of a speaker housing, and a speaker assembly and the an earphone assembly can be completed at one time so as to reduce the earphone assembly cost. Furthermore, a diameter of a diaphragm can be relatively increased and a length of an earphone front chamber in front of the diaphragm can be shortened so that the bass quality can be elevated and the alt loss can be decreased.

REFERENCES:
patent: 2008/0107299 (2008-05-01), Lin
patent: 2008/0240486 (2008-10-01), Garcia et al.

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