| 摘要 |
The present invention relates to a skin stimulator, in which a disk of a drum is insert injection molded to a metal disk having an outer surface with a plurality of needles in such a manner that reinforcing resin materials are buried in the metal disk, and the disks are stacked into a layer and tightly fixed to a retainer, thus simplifying manufacturing processes and maximizing productivity and economic advantages. The skin stimulator of the present invention is effective in operation, and protects the drum from foreign substances or dust. The skin stimulator of the present invention also protects the skin from excessive damage caused by the insertion of needles into the skin of the user, and prevents the breakage of needles to ensure stable use of the skin stimulator over a long period of time. Each of the needles of the skin stimulator of the present invention does not have a circular cross-section but rather a cross-section with six or more sides to minimize the contact area between the needles and the skin of the user and the pain caused by the insertion of the needles into the skin of the user. |
