Extensible child restraint carry handle
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Solution Overview
Problem
Existing child restraints lack an efficient and ergonomic solution for caregivers to carry infant seats comfortably over extended periods, especially when transitioning between stroller frames or vehicle seats, as current handles can be cumbersome and do not distribute weight effectively.
Innovation Solution
An extensible carry handle with a shoulder pad, adjustable-length strap section, and elastic bungee section that can stretch and adjust to support the infant seat, allowing for hands-free carrying and easy rotation between upright use and storage positions, utilizing a variable-length anchor-connector strip and web-length adjuster for ergonomic distribution of weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-length rigid handle is used to carry the infant seat, then the handle provides structural support, but it cannot adapt to different carrying positions and creates discomfort during extended use
Solution Approach 1:
The patent applies the dynamics principle by replacing the fixed rigid handle with an extensible handle that can dynamically change its length. The handle includes an elastic bungee section that allows it to extend when the infant seat is lifted and retract when set down, adapting to different carrying positions and reducing strain on the caregiver's shoulder during extended use.
Solution Approach 2:
The patent applies parameter changes by modifying the length parameter of the handle. The extensible handle can vary its length between a retracted state for storage and an extended state for lifting, allowing the same handle to serve multiple functions across different carrying scenarios without compromising structural support.
2Adaptability or versatility
If a non-adjustable handle is used, then the structure is simple, but it cannot accommodate different caregiver heights and carrying styles
Solution Approach 1:
The extensible handle dynamically adjusts its length to accommodate different caregiver heights and carrying styles. The elastic bungee section allows the handle to extend or retract based on the caregiver's needs, providing adaptability without requiring multiple fixed-length handles or complex adjustment mechanisms.
Solution Approach 2:
The extensible handle serves multiple functions: it provides structural support when retracted, enables lifting when extended, and adapts to various caregiver heights and carrying positions. This multi-functionality reduces the need for additional components while increasing versatility.
3Speed
If the handle remains extended during storage, then it is ready for immediate use, but it occupies excessive space and may interfere with alternative carrying methods
Solution Approach 1:
The handle dynamically changes its state between use and storage. During storage, the elastic bungee section allows the handle to retract to a compact size, minimizing space occupation and avoiding interference with alternative carrying methods. When needed, it quickly extends to readiness for immediate use.
Solution Approach 2:
The extensible handle can be nested or retracted into a compact configuration during storage, similar to a nested doll structure. This allows the handle to occupy minimal space when not in use while maintaining the capability for quick deployment when needed.
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
Enables caregivers to carry infant seats comfortably and securely over long periods, distributing weight effectively across the shoulder, and facilitates easy transition between carrying methods, improving usability and reducing strain during transport.
Implementation Method 1
The elastic bungee section is arranged to interconnect the head-end anchor and the adjustable-length strap section. A web-length adjuster is coupled to a distal end and mid-section of a web included in the adjustable-length strap section and is configured to be used by a caregiver to change the effective length of the adjustable-length strap section to change the length of the extensible carry handle.
Data Source
AI summary
A child restraint includes an infant seat and a carry handle coupled to the infant seat. The carry handle includes a shoulder pad arranged to rest on the shoulder of a caregiver wearing the carry handle in a shoulder-mounted position to support the infant seat alongside the caregiver.