Locking Zipper Pull Assembly for Infant-Resistant Garments
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Solution Overview
Problem
Infants and young toddlers can easily unzip their garments, leading to potential health risks and unsanitary conditions due to lack of dexterity in manipulating existing zippers, and existing safety measures like tape or pins are either ineffective or pose safety hazards.
Innovation Solution
A locking zipper pull assembly with a pin bracket and lever mechanism that requires specific lever positions to unlock, preventing unauthorized sliding along the zipper chain, making it difficult for infants to unzip the garment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional zipper pull is used, then the child can easily unzip the garment, but the child may become unclothed and exposed to health risks
Solution Approach 1:
The locking mechanism is pre-configured to engage automatically when the zipper is closed, preventing the slider from moving unintentionally. The spring-loaded pin is already positioned to block the slider's path, requiring deliberate unlocking action before the zipper can be opened.
Solution Approach 2:
A lever mechanism serves as an intermediary between the user and the zipper slider. The lever controls the release of the locking pin, requiring the user to manipulate the lever first before the slider can move. This intermediate step prevents direct and accidental unzipping.
2Object-affected harmful factors
If tape is used to cover the zipper pull, then access to the zipper is prevented, but determined infants can remove the tape and it may stick to the baby's skin causing irritation
Solution Approach 1:
The lever mechanism serves as an intermediary between the user and the zipper slider. The lever controls the release of the locking pin, requiring the user to manipulate the lever first before the slider can move. This intermediate step prevents direct and accidental unzipping.
Solution Approach 2:
The locking mechanism is self-enforcing through the spring-loaded pin that automatically engages with the slider. The system maintains its own security state without requiring external adhesives or attachments, and the spring provides continuous automatic engagement force.
3Object-affected harmful factors
If a safety pin is used to attach the pull to the garment, then unzipping is prevented, but children can undo the pin and risk getting stabbed by the exposed point
Solution Approach 1:
The lever mechanism serves multiple functions: it controls the locking pin release, guides the user's manipulating motion, and prevents direct access to the slider. This single component addresses both the security requirement and the safety concern without needing separate elements.
Solution Approach 2:
The lever mechanism serves as an intermediary between the user and the zipper slider. The lever controls the release of the locking pin, requiring the user to manipulate the lever first before the slider can move. This intermediate step prevents direct and accidental unzipping.
Data Source
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AI summary
A locking zipper pull is described wherein the zipper pull is locked when the pull's lever(s) are locked in a first position and can be unlocked by moving the lever(s) into a second position to allow the zipper pull to be slid along an associated zipper chain.