Title:
CANAL TYPE EARPHONE HAVING PRESSURE BALANCE STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/010565
Kind Code:
A1
Abstract:
The present disclosure relates to a canal type earphone which can easily implement a pressure balance structure without affecting the sound characteristics of a speaker unit by using an existing general diaphragm and general gasket. The disclosed embodiment provides a canal type earphone comprising: a housing having a front part, a rear part, and a stepped part formed between the front part and the rear part due to the difference between diameters of the front part and the rear part; and a speaker unit mounted on the stepped part of the housing, wherein the inner space of the housing is divided into a front chamber and a rear chamber with reference to the speaker unit mounted on the stepped part, and an air passage between the front chamber and the rear chamber is formed by an air groove formed in a spacer ring of the speaker unit, a side gap between a case and internal components, and an air hole formed through an edge portion of a PCB.
Inventors:
CHOI NAKGYU (KR)
KO EUNSU (KR)
KIM SANGKYUM (KR)
KO EUNSU (KR)
KIM SANGKYUM (KR)
Application Number:
PCT/KR2020/002984
Publication Date:
January 21, 2021
Filing Date:
March 03, 2020
Export Citation:
Assignee:
BSE CO LTD (KR)
International Classes:
H04R1/10; H04R1/02
Foreign References:
| KR101558091B1 | 2015-10-06 | |||
| KR101952909B1 | 2019-05-23 | |||
| KR20080003044U | 2008-08-04 | |||
| KR20170098527A | 2017-08-30 | |||
| JP2018085726A | 2018-05-31 |
Attorney, Agent or Firm:
SHINWOO PATENT & LAW FIRM (KR)
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