Title:
EARPHONE LOUDSPEAKER
Document Type and Number:
WIPO Patent Application WO/2015/021851
Kind Code:
A1
Abstract:
An earphone loudspeaker comprises an earphone loudspeaker body. The earphone loudspeaker is internally provided with a front cover (21), a sound diaphragm (22), a U cup (23), and a back cavity cover (20). A front cavity (28) is formed between the front cover (21) and the sound diaphragm (22), a first class back cavity (29) is formed between the sound diaphragm (22) and the U cup (23), and a variable sound cavity (30) is formed between the U cup (23) and the back cavity cover (20). The structure is simple and environmentally-friendly, achieves good sound effects, can reduce fatigue and injury of ears, improves the housing space of the entire earphone loudspeaker body and the production efficiency, and has high practicability.
Inventors:
LIAO CHAOHONG (CN)
Application Number:
PCT/CN2014/082865
Publication Date:
February 19, 2015
Filing Date:
July 24, 2014
Export Citation:
Assignee:
LIAO CHAOHONG (CN)
International Classes:
H04R11/00
Foreign References:
| CN103037276A | 2013-04-10 | |||
| CN203378017U | 2014-01-01 | |||
| CN101742373A | 2010-06-16 | |||
| CN102333259A | 2012-01-25 | |||
| CN203039854U | 2013-07-03 | |||
| CN202979273U | 2013-06-05 | |||
| US20110274301A1 | 2011-11-10 |
Attorney, Agent or Firm:
JIAQUAN IP LAW FIRM (CN)
广州嘉权专利商标事务所有限公司 (CN)
广州嘉权专利商标事务所有限公司 (CN)
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