Patent ID: 7063675
Filing Date: 2006-06-20
Classification: A61H

Abstract:
1. A rotary device of a chair comprising a chair body; the chair body having a seat; a resisting body extending from a rear end of the seat; an annular handle being installed on the resisting body; characterized in that: the chair body has a driving means which is installed in the seat; the driving means having a deceleration motor, a worm rod, a worm gear connected to the worm rod and a chain; the deceleration motor has a deceleration gear at one end thereof; one end of the deceleration motor has a driving spindle; after the driving spindle is connected with the worm rod, the worm gear will be driven to rotate as the deceleration motor rotates; the worm gear has a protruded driving shaft; one end of the chain is engaged to a teeth disk of the driving shaft, while another end of the chain is engaged to a lower end of the resisting body; the worm gear indirectly drives the resisting body and the handle on the resisting body.