Child Motion Seat Oscillation With Quiet Electromagnetic Drive
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Solution Overview
Problem
Existing children's motion devices fail to provide a smooth and quiet oscillating motion, which is unsettling for some children, as they often rely on noisy electromechanical drive systems that do not mimic the soothing motion experienced when being held by a parent.
Innovation Solution
A children's motion device that oscillates about a substantially upright axis, using an electromagnetic drive system with a permanent magnet and coil to generate smooth motion, while keeping the child's head aligned with the axis of rotation, and incorporating a control circuit and sensors to maintain consistent amplitude and minimize noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If an electromechanical drive system with gears and shafts is used to drive the child seat through a partial orbit, then the motion device can provide oscillating motion, but the motion generated is noticeably less smooth than natural parental holding motion
Solution Approach 1:
The patent replaces the traditional electromechanical drive system with gears and shafts with an electromagnetic suspension system. The child seat is suspended by electromagnetic forces between a permanent magnet and an electromagnet, eliminating mechanical contact and gear interactions. This substitution provides noticeably smoother motion that better mimics natural parental holding motion, while reducing the complexity of mechanical transmission components.
2Object-affected harmful factors
If an electromechanical drive system with gears and shafts is used, then the child seat can be driven through its partial orbit, but the noise generated is unsettling to some children
Solution Approach 1:
The patent eliminates noisy mechanical components by replacing the electromechanical drive system with an electromagnetic suspension system. The child seat is held and moved through electromagnetic forces between a permanent magnet and an electromagnet, eliminating gear meshing noise, bearing noise, and mechanical friction. This significantly reduces the noise level to prevent unsettling children, while the electromagnetic system itself is inherently quieter than mechanical alternatives.
3Ease of operation
If the child seat is driven through a partial orbit around a vertical axis, then oscillating motion is provided, but the entire child is moved along the partial orbit which may not be soothing
Solution Approach 1:
The patent applies local quality by differentiating the motion characteristics of different parts of the child seat. The electromagnetic suspension system allows the child seat to oscillate through a partial orbit while maintaining a relatively stable center of gravity. This creates a motion pattern where the child experiences gentle rocking rather than being whirled around the full orbit, providing a more soothing effect that mimics natural parental motion.
4Object-affected harmful factors
If traditional electromechanical drive systems are used, then oscillating motion can be generated, but the motion is not quiet enough for some children
Solution Approach 1:
The patent substitutes the noisy electromechanical drive system with a quiet electromagnetic suspension system. The permanent magnet and electromagnet configuration generates the necessary oscillating motion through electromagnetic forces without mechanical contact. This eliminates noise from gear meshing, belt friction, and bearing operations, providing a quiet operation suitable for soothing children while maintaining adequate drive power through the electromagnetic field.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device provides a quiet, smooth, and soothing motion that mimics the cradling motion of a parent, effectively calming children by ensuring the child's head remains stationary while the torso and legs move in an arcuate path, with adjustable amplitude and angle for optimal comfort.
Implementation Method 1
using an electromagnetic drive system with a permanent magnet and coil to generate smooth motion
Data Source
AI summary
Various embodiments of the present invention are directed to a children's motion device configured to oscillate a child support about a substantially upright axis of rotation. In various embodiments, the portion of the child support configured for supporting the head of a child positioned therein is configured to remain substantially aligned with the axis of rotation as the child support oscillates.