Control method and swing mechanism for an infant and child swing

Abstract

A swing mechanism for an infant and child swing includes a swing arm, a swing angle adjustment assembly and a PWM motor driving unit. The swing arm is driven by a motor for swinging forth and back in a first direction and a second direction. The swing angle adjustment assembly includes a knob, a connecting arm and a sensor, wherein the knob is associated with the sensor by the connecting arm thereby moving the sensor to a reference point at a swing height of the infant and child swing by turning the knob. The PWM motor driving unit inputs an adjustable voltage to the motor for driving the swing arm, and interrupting the adjustable voltage thereafter when the swing arm arrived the reference point in the first direction. A method for controlling the infant and child swing through said mechanism includes the steps of: (1) moving the sensor to a reference point; (2) driving the swing arm toward the reference point in a first direction; (3) generating a signal when the swing arm arrived and detected by the sensor at the reference point; (4) permitting the infant and child swing to move freely and upwardly by the inertial force when passed through the reference point; (5) driving the swing arm in a second direction after the swing arm swung back and passed the reference point; and (6) repeating the steps of (2) to (5), when the infant and child swing being swung back from the second direction to the first direction.

Dependencies are inferred from the claim text.