| 摘要 |
A massager having a massage unit provided with elongate coaxial massage rollers rotational on a common axis in a common plane extending above the unit transversely of a travel path defined by a pair of laterally spaced parallel racks on which the unit reciprocably travels on two pairs of gears on opposite sides of the unit and engaged with the racks. A reversible electric motor provides all the necessary drive and associated coupling elements couple the electric motor for drive of the massage rollers and gears for reciprocable travel of the massage unit. The unit has a rotationally driven splined shaft on which is disposed circumferentially a tubular support for the axis of the massage rollers and which has a keyway for receiving splines of the splined shaft for rotation of the support with the splined shaft and allowing the relative axial movement therebetween so the massage rollers can be selectively rotated about the axis of the splined shaft and reciprocated upwardly and downwardly of this axis and relative to the massage unit. The various movements of the massage rollers can be effected selectively independently of each other and when the unit is stationary or traveling.
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