Infant Seat Oscillation With Offset Pivot Self-Centering
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Solution Overview
Problem
Existing children's motion devices do not effectively replicate the soothing motion of a mother holding a child, and they often lack self-centering mechanisms and user-friendly control options.
Innovation Solution
A children's motion device with a seat assembly that oscillates about an axis offset from vertical, featuring a swing arm and seat frame that can pivot between orientations, and an electromagnetic drive system for controlled motion, along with user-selectable controls for speed, music volume, and duration, allowing self-centering and hands-free operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the seat assembly oscillates about a vertical axis, then the motion is simple and mechanically straightforward, but it does not replicate the soothing pendulum-like motion of a mother holding a child and lacks self-centering capability
Solution Approach 1:
The patent applies asymmetry by offsetting the axis of rotation from the vertical centerline of the device. This asymmetric configuration creates a pendulum-like oscillation pattern that naturally self-centers, replicating the soothing motion of a mother holding a child. The offset axis position (e.g., 2-4 inches from center) generates the desired gravitational self-centering effect without requiring additional active control mechanisms.
2Ease of operation
If the controls are positioned low for hands-free operation, then ease of operation improves for caregivers, but the structural design becomes more complex
Solution Approach 1:
The patent implements self-service by positioning the controls in an easily accessible location that allows caregivers to operate the device without bending or stretching. The controls are mounted on the base frame at a height and position that enables natural, relaxed access, making the device serve the user's needs without requiring awkward postures or additional assistive mechanisms.
3Adaptability or versatility
If the seat frame is fixed in one orientation, then the structure is simpler, but it cannot provide different motion patterns for different seating positions
Solution Approach 1:
The patent applies dynamics by enabling the seat frame to pivot between multiple orientations (e.g., forward-facing, side-facing, rear-facing) rather than being fixed. This dynamic reconfigurability allows the device to provide different motion patterns suitable for various seating positions and infant care scenarios. The pivot mechanism is integrated into the oscillation system, allowing smooth transitions between orientations while maintaining the pendulum-like motion characteristic.
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 soothing, pendulum-like motion that self-centers due to gravity, with user-friendly controls that allow caregivers to adjust speed and duration without bending, enhancing stability and convenience.
Implementation Method 1
an electromagnetic drive system for controlled motion
Implementation Method 2
The seat assembly's axis of rotation being at least slightly offset from the vertical is advantageous in that gravity will cause the seat assembly to 'self-center'
Data Source
AI summary
A motion device that provides a soothing motion for a child seated within the device to replicate a parent or caregiver cradling and/or swaying the child. Embodiments include a base frame configured to rest on a support surface, a support frame coupled to and extending upward from the base frame, and a seat assembly which is pivotably coupled to the support frame. The seat assembly moves in an oscillating motion about the pivot axis, which is selectively propelled by a drive mechanism or motor. The drive mechanism or motor is coupled to and/or is integral to the assembly and its speed and motion is controlled electronically. The pivot axis about which the seat assembly rotates is preferably configured to be at least slightly offset from the vertical axis, such that the seat assembly will “self-center” when at rest.