Motorized Infant Chair with Independent 2D Motion Profiles
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Solution Overview
Problem
Existing infant care devices lack the ability to provide simultaneous or independent movement in two dimensions, limiting their ability to replicate the diverse motion profiles of a parent or caregiver, which are essential for effectively soothing and entertaining infants.
Innovation Solution
A motorized infant chair with a drive mechanism that includes both horizontal and vertical reciprocating assemblies, controlled by a controller to produce a variety of motion profiles, allowing for independent movement in both directions to mimic the motion of a caregiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a single degree of motorized freedom is used to move the infant laterally, then the device can provide automated motion, but the motion profiles are limited to only one type
Solution Approach 1:
The patent transitions from a single-degree-of-freedom lateral motion system to a two-degree-of-freedom system by adding independent vertical motion capability. This dimensional expansion allows the generation of multiple motion profiles (rocking, bouncing, swinging) from the same hardware platform, resolving the contradiction between automation and motion profile versatility.
Solution Approach 2:
The system employs dynamically controllable motion where both horizontal and vertical actuators can independently adjust their motion parameters in real-time. This dynamic control enables seamless transitions between different motion profiles and allows adaptation to various infant comfort requirements, maintaining both automation and versatility.
2Strength
If a wire frame structure is used to provide resistance to deformation, then the structure can support the child's weight, but the motion is limited to slight and temporary deformation only
Solution Approach 1:
The patent replaces the passive mechanical wire frame deformation system with an active motorized reciprocating system. The wire frame maintains its structural support function, while the motorized assemblies provide the primary motion generation, enabling full-range controlled movement rather than limited elastic deformation.
Solution Approach 2:
The patent introduces motorized reciprocating assemblies as intermediary mechanisms between the structural support system and the infant seat. These intermediaries translate motor rotation into controlled linear motion, decoupling the structural support function from the motion generation function and enabling versatile motion profiles.
3Adaptability or versatility
If a motorized reciprocating assembly is added to provide vertical motion, then two-dimensional movement is achieved, but the device complexity increases
Solution Approach 1:
The patent divides the motion generation system into separate modular reciprocating assemblies - one for horizontal motion and one for vertical motion. Each assembly is independently controlled and can be independently maintained or replaced, reducing overall system complexity while enabling two-dimensional movement capabilities.
Solution Approach 2:
The motorized reciprocating assemblies serve multiple functions: they provide the primary motion generation, enable various motion profiles through coordinated operation, and can be independently controlled for different therapeutic or comfort applications. This multi-functionality justifies the added complexity by consolidating multiple capabilities into unified components.
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 motorized infant chair can reproduce a range of motion profiles, providing effective soothing and entertainment by replicating the natural movements of a parent or caregiver, enhancing the comfort and engagement of infants.
Implementation Method 1
a first motor having a drive shaft; a slide crank assembly comprising a gearing assembly coupled to the drive shaft of the first motor
Implementation Method 2
a second motor having a drive shaft; a worm gear assembly coupled to the output of the drive shaft
Implementation Method 3
a slide crank assembly comprising a gearing assembly coupled to the drive shaft of the first motor and a crank member coupled to the gearing assembly
Implementation Method 4
a worm gear assembly coupled to the output of the drive shaft; and a vertical yoke having a first end coupled to an output shaft of the worm gear assembly
Implementation Method 5
The vertical reciprocating assembly may further include a dual scissor mechanism coupled to a second end of the vertical yoke configured to support the support device
Data Source
AI summary
An infant care apparatus includes a base; a drive mechanism disposed on the base; a controller electronically coupled to the drive mechanism; and a support device coupled to the drive mechanism. The support device is configured to be moved in both a horizontal and vertical direction relative to the base by the drive mechanism. The drive mechanism is controlled by the controller to move the support device in a plurality of motion profiles relative to the base.