Powered Recliner Chair with Single-Motor Multi-Function Control

The patent applies a single motor that performs multiple functions: it provides both the power drive function for extending the leg rest, lifting the chair, and reclining the chair, as well as the power return function for returning the chair to the normal seated position. This multi-functional motor replaces what would traditionally require multiple separate motors, thereby reducing device complexity while maintaining load support capability and multi-positional functionality.

The patent implements periodic action through bidirectional control of the single motor. The controller alternates the motor's rotation direction based on the desired chair position: rotating in a first direction to extend the leg rest, lift the chair, or recline the chair, and rotating in a second (opposite) direction to return the chair to the normal seated position. This periodic bidirectional control simplifies the mechanical structure while managing control complexity through systematic direction switching.

The patent replaces the conventional mechanical rocking mechanism (which requires user force application) with an electrically-driven rocking mechanism. A motor rotates a rocking shaft that directly drives the rocking motion of the chair body through a rocking bracket, eliminating the need for the user to exert force. This substitution of mechanical user-driven motion with an electrically-driven system maintains the rocking function while significantly improving user comfort and relaxation.