公开(公告)号：US10244305B2

公开(公告)日：2019-03-26

申请号：US15891541

申请日：2018-02-08

Applicant: LG ELECTRONICS INC.

Inventor： Donghan Kim ,  Siyoung Park ,  Junyoung Park ,  Sewon Jang ,  Shin Han

IPC: H04R1/10

Abstract: A portable sound device having a main body having an earbud holder, an earbud detachably mounted in the earbud holder for outputting a sound, a main board located in the main body, the main body being connected to the earbud via a sound cable, and a rotary module mounted in the main body is provided. The rotary module includes a shaft fixed to the main body, a bobbin rotatable about the shaft, the sound cable being wound around the outer circumferential surface of the bobbin, a reel spring providing rotary force to the bobbin, a track having a concave part, the track being rotated with the bobbin, a guide plate having a guide slot, through which the shaft extends, the guide slot extending in one direction, and a bump protruding from the guide plate so as to be inserted into the track.