Molded Planter With Separate Rim And Interlocking Flanges
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Solution Overview
Problem
Conventional plastic planters with thick, solid rims face challenges in cooling and deformation during manufacturing, and require complex processes to replicate the design of pottery planters with hollow rims, which are not structurally or aesthetically necessary, increasing costs.
Innovation Solution
A thermoplastic planter design featuring a separate, screwable rim and container with flanges and grooves for secure attachment, allowing for a seamless appearance and preventing overtightening, while reducing material usage and manufacturing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thick, solid rim is used in plastic planters, then structural integrity is improved, but cooling efficiency deteriorates and deformation occurs during manufacturing
Solution Approach 1:
The planter is divided into two separate components: a container body and a rim, which are assembled together rather than formed as a single piece. This segmentation allows the rim to be thinner and hollow, improving cooling efficiency during manufacturing while maintaining structural integrity through the assembly design with interlocking flanges and grooves.
2Ease of manufacture
If a hollow rim is used to improve cooling efficiency, then manufacturing complexity increases due to complex dies and air blowing equipment
Solution Approach 1:
By segmenting the planter into separate container and rim components, the rim can be formed as a simple hollow structure using basic molding techniques, avoiding the need for complex multi-stage dies and air blowing equipment required for integrated hollow rim designs.
Solution Approach 2:
The rim is extracted as a separate component from the container body, allowing it to be manufactured independently with simpler equipment. The hollow structure of the separate rim is easier to achieve with standard molding processes compared to forming a hollow rim as part of an integrated one-piece design.
3Loss of substance
If a separate rim is used, then material usage is reduced, but assembly complexity increases
Solution Approach 1:
The planter is segmented into container and rim components, allowing material to be used only where structurally necessary. The rim is made thinner and hollow, reducing overall material consumption while the assembly complexity is managed through simple interlocking flange and groove features.
Solution Approach 2:
By extracting the rim as a separate component, material usage is optimized as the rim can be made thinner and hollow without compromising structural integrity. The assembly process is simplified through straightforward mechanical interlocking features that require minimal assembly steps.
Data Source
AI summary
A planter includes a concave container and a separate rim, both formed from a thermoplastic material. The container has a brim extending radially outward from an upper portion of the container. A vertical wall extends upward from the brim. The rim has a top wall with outer and inner side walls extending downward from its edges. The upper surface of the brim of the container comprises a stop inward of the vertical wall such that when the rim is advanced onto the upper end of the container, a lower portion of the inner rim wall confronts the stop to inhibit further advancement.