Patent ID: 6402710
Filing Date: 2002-06-11
Classification: A61H

Abstract:
A motor-driven massaging bar comprising:a controller; a DC motor connected to and controlled by said controller, said DC motor having an output shaft; a shell fastened to said controller to hold said DC motor on the inside; and a massaging unit mounted on one end of said shell and coupled to the output shaft of said DC motor; wherein said massaging unit comprises a shaft member coupled to the output shaft of said DC motor, a ball holder coupled to the shaft of said massaging unit, said ball holder comprising an axially extended center through hole, which receives a part of said shaft, and an annular ball groove disposed at a top sidewall thereof, a bottom ball table covered on said ball holder, said bottom ball table comprising an upright post extended from the center of a top sidewall thereof, an annular ball groove disposed at a bottom sidewall thereof, a plurality of through holes axially extended through said upright post, and a plurality of upright pins respectively extended from the top sidewall around the border thereof, a plurality of steel balls moved in the annular ball groove of said ball holder and the annular ball groove of said bottom ball table, a top ball table fastened to the upright post of said bottom ball table, said top ball table comprising a plurality of countersunk holes respectively fastened to the through holes of said bottom ball table and screw holes of the shaft of said massaging unit by a respective screw bolt, and a plurality of bottom pins respectively extended from a bottom sidewall thereof and aimed at the upright pins of said bottom ball table, a plurality of swivel balls respectively rotatably mounted on the upright pins of said bottom ball table and the bottom pins of said top ball table, and a conical cap covered on said top ball table.