A multi-functional portable skin care device, comprising:
- a roller unit including a first roller and a second roller and an insulating ring member interposed between the first roller and the second roller, wherein the insulating ring member is configured to electrically isolate the first roller and the second roller such that electrical current does not directly flow between the first roller and the second roller;
- a connecting unit including a shaft member passing through centers of the first roller, the second roller and the insulating ring member, a conductive pipe coupled to a rear end of the shaft member and connected in a longitudinal direction and the conductive pipe electrically connected to the second roller, and a conductive rod installed in the longitudinal direction along a hollow of the conductive pipe and a hollow of the shaft member and the conductive rod is electrically connected to the first roller;
- and
- a main body unit including a main body case mechanically connected to the roller unit through the connecting unit, the main body unit including a battery installed inside the main body case and supplying electricity to the first and second rollers, a control circuit board for controlling a power supplied to the first and second rollers, a control button for selecting a current supplied to the first and second rollers, and an LED display for displaying an operating state of the first and second rollers, wherein a first electrode of the battery is connected to the first roller by the conductive rod and a second electrode of the battery is connected to the second roller by the conductive pipe;
- wherein the first roller and the second roller are made of a conductive material and are combined with the insulating ring member to have a cylindrical shape;
- wherein the insulating ring member includes an insulating ring interposed between the first roller and the second roller and having an outer peripheral surface configured to be in contact with skin, a first support ring protruding from one side of the insulating ring and fastened to one side of the first roller, and a second support ring protruding from a second side of the insulating ring and is fastened to one side of the second roller;
- and the shaft member consists of a first shaft pipe that rotatably supports the first roller and the first support ring of the insulating ring member, and a second shaft pipe that is fastened to a rear end of the first shaft pipe, the second shaft pipe is connected in the longitudinal direction relative to the first shaft pipe, and the second shaft pipe rotatably supports the second support ring of the insulating ring member and the second roller.