Title:
PORTABLE WIRELESS CHARGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/086553
Kind Code:
A1
Abstract:
The present invention relates to a portable wireless charging device and comprises: at least one earphone main body including a speaker therein for outputting a sound source; a wireless acoustic device including a Bluetooth module and an acoustic device battery; and a case including a power connection part through which power is supplied from the outside and having at least one seating groove for accommodating the earphone main body, wherein: inside the case, a transmission coil electrically connected to an external power source through the power connection part is wound a plurality of times along the circumference of the seating groove; inside the earphone main body, a reception coil connected to the acoustic device battery is wound a plurality of times around the outer circumferential surface of the speaker; in the transmission coil, an electromagnetic field is generated by a voltage applied from the external power source; when the earphone main body is accommodated in the seating groove, the reception coil is located within the electromagnetic field such that an induced current is generated by electromagnetic induction; and the acoustic device battery is charged with electricity by the induced current.
Inventors:
LEE SEUNGJAE (KR)
Application Number:
PCT/KR2016/003880
Publication Date:
May 26, 2017
Filing Date:
April 14, 2016
Export Citation:
Assignee:
HCTM CO LTD (KR)
International Classes:
H02J7/02; H04R1/10
Foreign References:
| KR20050066696A | 2005-06-30 | |||
| KR20140067341A | 2014-06-05 | |||
| KR20050097590A | 2005-10-10 | |||
| JP2009065749A | 2009-03-26 | |||
| JP2013055779A | 2013-03-21 |
Attorney, Agent or Firm:
RYU, Sungwon et al. (KR)
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