Liquid Container Protrusion Design for Attachment Stability
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Solution Overview
Problem
Existing liquid containers with protrusions for attachment face challenges in maintaining structural integrity and stability when the contact surface engages with the attachment portion, often resulting in deformation.
Innovation Solution
A liquid container with a blow-molded main body featuring a protrusion with a contact surface that faces opposite to the insertion direction, where the protrusion's shape and wall thickness are optimized to enhance strength and prevent deformation upon contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the protrusion is designed with a contact surface that faces opposite to the insertion direction, then the attachment reliability is improved, but the structural integrity and stability deteriorate due to deformation upon contact
Solution Approach 1:
The protrusion is designed with non-uniform wall thickness, where the portion closer to the contact surface has greater thickness to provide local reinforcement. This allows the contact surface to maintain structural integrity while still achieving reliable attachment when engaging with the attachment portion.
Solution Approach 2:
The main body is constructed using multi-layer co-molding technology with different resin materials having distinct properties. This composite structure enables the protrusion to have enhanced strength and deformation resistance while maintaining the required attachment functionality.
2Strength
If the protrusion wall thickness is increased to prevent deformation, then the structural integrity is improved, but the manufacturing complexity increases
Solution Approach 1:
Instead of uniformly increasing the entire protrusion wall thickness, the design applies localized thickness variation only in the critical region closer to the contact surface. This provides the necessary strength enhancement while avoiding excessive manufacturing complexity throughout the entire component.
Solution Approach 2:
The multi-layer co-molding process allows different resin materials with varying mechanical properties to be combined, enabling the protrusion to achieve enhanced strength without requiring uniform thickness increases that would complicate manufacturing.
3Ease of manufacture
If the protrusion is designed with uniform wall thickness, then the manufacturing process is simplified, but the contact surface deforms under load reducing attachment reliability
Solution Approach 1:
The protrusion features localized thickness variation in the region closer to the contact surface, providing additional strength where needed during attachment while maintaining manufacturing simplicity in other regions. This targeted approach prevents contact surface deformation without excessively complicating the overall manufacturing process.
Solution Approach 2:
The multi-layer co-molding technique enables the protrusion to have enhanced local strength through material composition rather than uniform thickness, maintaining manufacturing simplicity while preventing deformation under attachment load.
Data Source
AI summary
A liquid container is insertable into an attachment unit in a first direction. The liquid container includes a main body that includes a chamber and a protrusion. The chamber is configured to store liquid configured to store liquid. The protrusion has a contact surface that faces a second direction opposite to the first direction.