PROBLEM TO BE SOLVED: To provide a beauty machine for massaging a skin in a tightly contacting state to a skin.SOLUTION: The invention relates to a beauty machine which comprises at least a pair of ball assemblies on one end part of a handpiece, the ball assemblies are arranged at an interval and each of which is supported rotatably around one axis line as a center of rotation. The ball assemblies comprises: a shaft whose tip end part forms an inclined taper surface, whose rear end has a step part on which a diameter is extended； a first bearing which contacts tightly to the step part and into which the shaft is inserted； a second bearing into which the shaft is inserted and separated from the first bearing at a constant interval； a ball conductor which has a recess into which a part of the shaft is inserted and tip of the shaft contacts, which tightly contacts a peripheral face of the second bearing, and which rotates around the shaft as a rotation axis； and a lock nut comprising an open hole therein, whose inner peripheral face tightly contacts a peripheral face of the first bearing, whose peripheral face couples an inner peripheral face of the ball conductor.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】肌に密着させてマッサージする美容機器を提供すること。【解決手段】本発明は、ハンドピースの一端部に少なくとも一対のボール組立体を備え、ボール組立体は相互に間隔を置いてそれぞれ一つの軸線を中心に回転可能に支持される美容機器であって、ボール組立体は、先端部が傾斜したテーパ面を形成し、後端に直径が拡張された段差部を備えるシャフト、段差部に密着してシャフトが挿入される第１ベアリング、シャフトが挿入されて第１ベアリングと一定間隔離間して配設される第２ベアリング、シャフトの一部が挿入されて先端部が接する凹部が形成され、第２ベアリングの外周面と密着し、シャフトを軸に回転するボール導電体、及び、内部に貫通孔が形成されて内周面が第１ベアリングの外周面と密着し、外周面にはボール導電体の内周面と結合するロックナットを含む。【選択図】図３
