Crown-Type Hanger Sizer Locking for Angled Plastic Hooks
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Solution Overview
Problem
Existing crown-type sizers for hangers are easily detachable, leading to risks of product exchange and ingestion, especially when applied to plastic hangers with hooks at angles other than 90 degrees, and previous solutions compromised hanger integrity or were not aesthetically pleasing.
Innovation Solution
A crown-type sizer with a peripheral wall structure featuring trapezium-shaped longitudinal and rectangle-shaped transverse sides, including protrusion bosses that engage with a hanger's groove and protrusion, providing secure locking and compatibility with plastic hangers, even those with hooks at angles other than 90 degrees, while allowing size indicia on the sizer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If crown-type sizers are made easily detachable from hangers, then they can be removed and repositioned, but this leads to risks of product exchange and ingestion by children
Solution Approach 1:
The sizer is designed with a dynamic attachment system that allows easy installation through a grooved channel but provides secure locking once positioned. The protrusion boss engages with the groove to create a locked state that prevents accidental removal while maintaining ease of initial attachment.
Solution Approach 2:
A grooved channel structure acts as an intermediary mechanism between the sizer and hanger. The channel guides the sizer into position and the protrusion-boss groove interaction provides automatic locking, mediating between easy installation and secure attachment requirements.
2Reliability
If crown-type sizers are assembled in an integral manner to prevent removal, then security is improved, but the hanger integrity is compromised and re-use becomes impossible
Solution Approach 1:
The attachment system is segmented into separate components: the sizer with protrusion boss and the hanger with grooved channel. This allows the sizer to be securely attached without compromising the hanger's structural integrity, enabling the hanger to be reused after sizer removal.
Solution Approach 2:
The locking function is extracted as a separate mechanism (protrusion boss engaging with groove) rather than being integrated into the hanger structure itself. This allows secure attachment while preserving the hanger's original integrity and re-usability.
3Reliability
If the sizer is made with a peripheral wall structure with protrusion bosses, then secure locking is achieved, but the device complexity increases
Solution Approach 1:
The peripheral wall structure with protrusion bosses provides localized reinforcement and locking functionality only where needed for attachment security. The rest of the sizer maintains a simple crown shape, achieving secure locking without overall structural complexity.
Data Source
AI summary
A crown-type sizer for mounting on a hanger includes a body and a hook extending from a mid-point of the body. The sizer includes a pair of parallel walls and a pair of non-parallel walls, each wall of the non-parallel walls being joined to each wall of the parallel walls, the pairs of walls defining a lower open base and an open base in an upper part of the sizer for passing over the hook. Each of the parallel walls has a single boss disposed in a corner of the respective parallel wall and each non-parallel wall is shorter in height than at least one parallel wall.