Non-Rotational Blade Assembly Cap for Leak-Safe Container Sealing
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Solution Overview
Problem
Food processors, such as blenders, face issues with food leakage due to seal deformation during the attachment of cutting assemblies, and the use of threads adds complexity and cost.
Innovation Solution
A cap with a connector system featuring an engaging piece and lever that securely attaches to the container, providing a seal and eliminating the need for threads, allowing for easy engagement and rotation to couple with the food processing base.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a threadable cutting assembly is used to attach to the container, then the attachment is secure, but the rotary motion stretches or deforms the seal causing food leakage
Solution Approach 1:
The attachment mechanism is divided into two distinct phases: a non-rotational engagement phase where the cutting assembly is initially attached to the container without rotating, preserving seal integrity; and a subsequent rotational phase that occurs only after engagement, which does not compromise the seal. This segmentation resolves the contradiction by separating the attachment action from the rotational motion that causes seal deformation.
Solution Approach 2:
The connector is pre-positioned on the cutting assembly in a ready state, and the engagement surfaces are pre-aligned, allowing the cutting assembly to be attached to the container in a single non-rotational motion. This preliminary preparation eliminates the need for rotational motion during attachment, preventing seal deformation while ensuring secure attachment.
2Strength
If threads are included on both the cutting assembly and container, then the attachment is secure, but the complexity and cost increase
Solution Approach 1:
The threaded connection structure is completely removed from the design. Instead of using traditional threaded interfaces on both the cutting assembly and container, the patent employs a simplified connector-based engagement system with complementary engagement surfaces that achieve secure attachment without the complexity of threaded structures.
Solution Approach 2:
The engagement mechanism uses simplified geometric shapes and surfaces that replicate the securing function of threads without their complexity. The connector and engagement surface are designed with straightforward geometries that provide adequate attachment strength while eliminating the need for complex threading operations and reducing manufacturing cost.
Data Source
AI summary
A cap for closing a container including a cap body for contacting an open end of the container and at least one connector mounted to an exterior of the cap body for coupling the cap body to the container. The at least one connector includes an engaging piece and a lever. An initial movement of the at least one connector causes the engaging piece to contact the container and a further movement of the at least one connector causes the engaging piece to affix the cap body to the container.