公开(公告)号：US11944583B2

公开(公告)日：2024-04-02

申请号：US17225092

申请日：2021-04-07

Applicant: Jinyun Lin

Inventor： Jinyun Lin

IPC: A61H7/00 ,  A61N1/32 ,  A61N5/00 ,  A61N5/06 ,  A61N5/067

CPC classification number: A61H7/005 ,  A61N1/322 ,  A61N5/0616 ,  A61H2201/10 ,  A61H2201/1215 ,  A61H2201/1664 ,  A61H2201/1671 ,  A61N2005/0644 ,  A61N5/067

Abstract: A rotatable and retractable beauty instrument based on signal synchronization includes a main body. A back cover and a positioning head cover are respectively provided at rear and front sides of the main body. A synchronous rotating disk, a rise-fall retractable body and an active rubber body are sequentially arranged between the main body and the positioning head cover. A control main board is arranged between the main body and the back cover, and a direct-current speed-reducing motor is arranged on the control main board. A synchronous transmission circuit board is arranged on one surface of the synchronous rotating disk, and the rise-fall retractable body and multiple springs are arranged at a top of the other surface of the synchronous rotating disk. Based on the combination of the rise-fall retractable body and the synchronous rotating disk, the automatic extension and retraction is achieved.