| 摘要 |
<p>It is an object to provide a more-simplified, compact unit-type roller drive device, which permits more certain, smooth driving for motor-driven roller massage actions, and also to a motor-driven roller massage instrument mounted with such a unit type roller drive device. There is provided a roller drive device of a size as approximately high as the back of the human body. The roller drive device has a frame composed of a base portion and left and right edge portions standing upright from the left and right edges of the base portion, and a longitudinal guide slit is provided in each of the left and right edge portions. A shaft having a gear is mounted to each of the upper and lower ends of the frame, and a roller chain is mounted in a ring shape round the upper and lower shafts in meshing with the gears. A shaft bushing fixed to massaging ball rollers is mounted to the roller chain, and the left and right ends of the shaft bushings are mounted in an inserted state in the guide slits. With the above structure, the roller chains are moved vertically by rotation of the shafts with a drive motor. There is also provided a motor-driven roller massage instrument mounted with such a roller drive device. <IMAGE></p> |
