Segmented Bag Holder for Large Capacity Debris

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Solution Overview

Problem

Existing bag holders for lawn trash and debris do not effectively manage large capacities while being lightweight and easy to assemble/disassemble for storage.

Innovation Solution

A durable, lightweight bag holder constructed of plastic, comprising four interlocking pieces that assemble and disassemble for use and storage, designed to hold a 55-gallon capacity upright and open for easy filling, featuring a baseplate, vertical supports, and a stretching lock strap for securing a large plastic bag.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If a bag holder is designed to hold large capacity (55 gallons), then the volume capacity is improved, but the weight and ease of management deteriorate

Engineering Contradiction:

Improvebag holder capacityVSAvoidbag holder weight

Core Design Contradiction:

Volume of moving objectVSWeight of moving object

Solution Approach 1:

The bag holder is divided into four separate interlocking pieces (baseplate, two vertical supports, and top collar) that can be assembled and disassembled. This segmentation allows the large-volume structure to be broken into lighter, more manageable components that are easier to transport and store when not in use.

Inventive Principle:

Principle #1Segmentation

2Volume of moving object

If a bag holder is designed to hold large capacity (55 gallons), then the volume capacity is improved, but the ease of assembly and disassembly deteriorates

Engineering Contradiction:

Improvebag holder capacityVSAvoidease of assembly

Core Design Contradiction:

Volume of moving objectVSEase of manufacture

Solution Approach 1:

The structure is segmented into four modular pieces with standardized connection interfaces (male/female sockets). This segmentation combined with simple interlocking mechanisms makes assembly and disassembly straightforward tasks that can be completed without specialized tools or complex procedures.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The vertical supports feature nested male and female socket connections that allow pieces to interlock securely. This nesting arrangement provides stable connections while maintaining ease of assembly, as each piece simply needs to be inserted into its corresponding socket.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Strength

If a bag holder is constructed of durable plastic, then the strength and durability are improved, but the weight increases

Engineering Contradiction:

Improvestructural integrityVSAvoidbag holder weight

Core Design Contradiction:

StrengthVSWeight of moving object

Solution Approach 1:

The bag holder utilizes thin-walled plastic construction with optimized structural geometry (vertical supports, flared baseplate) that provides sufficient strength and durability while minimizing material usage and overall weight. The design relies on shape and structure rather than thick walls to achieve structural integrity.

Inventive Principle:

Principle #30Flexible shells and thin films

Data Source

PatentUS11358791B1EZ fill bag holder

Publication Date: 2022.06.14 ALBERSON OWEN LEE

AI summary

A device whose purpose is to hold a lawn trash bag upright and open for easy fill up with leaves, lawn clippings, recyclables, or any yard or beach debris and clean up. It holds up to a 55 gallon capacity. It is constructed of heavy, durable plastic yet is light weight and easy to manage. It consists of four interlocking pieces to assemble for use and disassemble for storage.