Hinged Closure Band Structure to Prevent Cap Littering
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Solution Overview
Problem
Traditional closure plug designs detach permanently from containers after opening, leading to a high likelihood of littering.
Innovation Solution
A hinged closure design with an attachment band and indicator section that maintains a connection between the closure and the container even after opening, utilizing frangible connections and hinge bridges to ensure the closure remains coupled.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional closure plug designs are used, then the closure can be easily removed from the container, but the closure permanently detaches and is likely to be littered
Solution Approach 1:
The closure is segmented into two functional parts: a removable upper portion (closure body) and a retained lower portion (attachment band with indicator section). The frangible connections allow the upper portion to be easily removed for opening the container, while the lower portion remains attached to prevent littering. This segmentation resolves the contradiction by enabling easy removal where needed while maintaining attachment where harmful littering would occur.
Solution Approach 2:
Different parts of the closure have different attachment qualities. The attachment band and indicator section maintain strong local attachment to the container through the hinge connection, while the upper closure body portion is designed for easy removal. This local differentiation in attachment strength allows the closure to provide both easy opening and litter prevention functions simultaneously.
2Object-affected harmful factors
If a hinged closure design with attachment band and indicator section is used, then the closure remains coupled to the container after opening, but the device complexity increases
Solution Approach 1:
The attachment band and indicator section are merged into a single integrated component that performs dual functions: securing the closure to the container and providing visual indication of opening status. This merging reduces overall device complexity compared to having separate attachment mechanisms and indicator mechanisms, while still achieving litter prevention through the hinged connection.
Solution Approach 2:
The indicator section serves multiple functions: it acts as part of the attachment mechanism (through the attachment channel and frangible connections), provides visual indication of the closure state, and maintains the hinge connection to the container. This multi-functionality reduces the need for separate components, thereby managing device complexity while achieving litter prevention.
3Ease of operation
If frangible connections are broken to allow opening, then the closure can be opened, but the connection between closure and container is lost
Solution Approach 1:
The connection system is segmented into frangible connections (designed to break for opening) and a hinge connection (designed to remain intact). The frangible connections in the attachment channel break to allow easy opening, while the hinge connection between the indicator section and container maintains reliable attachment afterward, preventing complete loss of connection.
Solution Approach 2:
The indicator section acts as an intermediary component that maintains the connection between the closure and container after opening. When frangible connections break during opening, the indicator section with its attachment channel and hinge connection serves as the mediating element that preserves the attachment, ensuring the closure remains coupled to the container.
Data Source
AI summary
A closure that remains coupled to a container after the upper portion of the closure has been rotatably removed from the container. The closure may include an attachment channel, which includes alternating segments of linear openings and frangible connections. The attachment channel may also include two hinge bridges that remain unbroken when one or more of the frangible connections are broken.