Lid-Collar Assembly With Anti-Rotation Ribs for Container Alignment
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Solution Overview
Problem
Lids on containers often rotate out of position when assembled, disrupting alignment with desired features or messaging on the container.
Innovation Solution
A container design featuring a collar-lid assembly with longitudinally extending ribs that engage an annular flange to resist rotation, utilizing retaining elements to prevent axial separation and anti-rotation elements to create a friction fit, ensuring the lid remains securely attached.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a lid is assembled onto a container with a round opening, then the lid can cover the opening, but the lid rotates out of position
Solution Approach 1:
The patent introduces asymmetric features including a non-circular collar shape and longitudinally extending ribs on the collar that engage with corresponding features on the container body. These asymmetric elements break the rotational symmetry, creating specific engagement points that prevent the lid from rotating to arbitrary positions while maintaining secure coverage of the opening.
Solution Approach 2:
The lid assembly is divided into separate functional components: a collar with anti-rotation ribs, a lid body, and retaining elements. The collar is segmented with multiple ribs spaced around its circumference, each engaging with the container body at specific locations. This segmentation allows the lid to be secured in position while maintaining ease of assembly and disassembly.
2Reliability
If retaining elements are added to prevent axial separation, then the lid remains securely attached, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions into the collar component: the collar provides the interface between the lid and container body, includes anti-rotation ribs to prevent rotation, and incorporates retaining elements to prevent axial separation. By merging these functions into a single integrated collar assembly, the design achieves secure lid attachment without requiring separate components for each function, thus limiting the increase in device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design effectively prevents lid rotation and axial separation, maintaining alignment and securing the lid in place, enhancing usability and product integrity.
Implementation Method 1
creating a friction fit between one or more anti-rotation elements on the inner side surface and the annular flange to resist rotation of the collar-lid assembly relative to the container body
Implementation Method 2
positioning one or more retaining elements located on the inner side surface beneath the annular flange to resist axial separation of the collar-lid assembly from the container body
Data Source
AI summary
A container (100) having a main body (104) including one or more sidewalls (106) having an interior surface (120) and an exterior surface (122) and defining an interior compartment (108), the one or more sidewalls having an upper portion (114) defining a circular opening (110) to the interior compartment and an annular flange (128) extending from the exterior surface and a lid-collar assembly (112, 116) comprising a lid (116) attached to a collar (112) affixed to the main body, the collar having an inner side surface (162) positioned radially outward of the annular flange and a plurality of longitudinally extending ribs (210) spaced apart on the inner side surface, wherein the plurality of ribs engage the annular flange to resist rotation of the lid-collar assembly relative to the main body.