Infant Carrier Handle Lock for Child Access and Secure Carry
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Solution Overview
Problem
Infant carriers lack a convenient and secure mechanism for transitioning the carrier handle between storage and carry positions, which can obstruct access to the child and complicate handling.
Innovation Solution
A pivotable carrier handle with a handle lock mechanism that moves between locked and unlocked positions, allowing the handle to extend along the seat bucket in storage and upwards over it in carry position, facilitated by a lever, lock block, and spring system for easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the carrier handle is made fixed and stationary, then structural simplicity is improved, but accessibility to the child is worsened due to obstruction
Solution Approach 1:
The carrier handle is designed to be dynamic rather than fixed, allowing it to pivot between a storage position (extending along the seat bucket) and a carry position (extending upward). This dynamic configuration enables the handle to clear the child access area when in storage position, improving accessibility, while providing structural stability when in carry position for secure transport.
2Ease of operation
If the carrier handle is made movable to improve accessibility, then ease of operation is improved, but device complexity worsens due to need for locking mechanism
Solution Approach 1:
The handle lock mechanism is designed to be self-servicing through spring-loaded operation. The spring automatically returns the lock block to the locked position after the handle is moved, eliminating the need for manual resetting or complex control systems. Users simply need to apply force to move the handle, and the mechanism self-regulates its locking state.
Solution Approach 2:
The locking function is extracted as a separate, dedicated component (lock block and lever assembly) rather than being integrated into the main handle structure. This modular approach simplifies the overall design by isolating the complexity to a specific subsystem that can be independently analyzed and manufactured.
3Reliability
If the handle lock is added to secure the handle position, then reliability is improved, but device complexity worsens
Solution Approach 1:
The handle lock uses simple, inexpensive components (spring, lock block, lever) that can be easily manufactured and replaced if needed. The spring provides reliable mechanical force without requiring precision engineering or expensive materials, achieving reliable locking function through simple, robust design.
Solution Approach 2:
The locking mechanism is segmented into distinct functional components: the lock block for physical blocking, the lever for user interaction and force transmission, and the spring for automatic resetting. This segmentation allows each component to be optimized independently and simplifies the overall structural design.
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 seamless transition of the carrier handle between positions without obstructing access to the child, providing a secure and user-friendly handling experience.
Implementation Method 1
The spring is positioned to lie between the lock block and the carrier handle. The spring is configured to provide a bias force to the lock block to urge the lock block and lever to assume the locked position and to maintain the input surface in collinear relation with the curved forward surface of the carrier handle.
Data Source
AI summary
An infant carrier includes a seat bucket and a carrier handle. The carrier handle is coupled to the seat bucket and is movable between a storage position extending along the seat bucket and a carry position extending up and over the seat bucket.