Trash Can Face Plate Design for Single Mold Production

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Solution Overview

Problem

Existing trash cans require multiple molds for manufacturing, leading to high mold costs and production complexities.

Innovation Solution

A trash can design featuring face plates with a common structure, allowing for injection molding with a single or shared molds, and a connector system for easy assembly and use.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If multiple molds are used to manufacture different face plates, then the trash can can be assembled at destination, but the mold cost increases

Engineering Contradiction:

Improvemold costVSAvoidnumber of molds

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent applies universality by designing a single mold that can produce multiple different face plates (front, rear, left, right) through varying injection parameters and positioning. This universal mold eliminates the need for separate molds for each face plate, directly reducing mold cost and complexity while maintaining the ability to assemble different components at the destination.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent segments the trash can into modular face plates that can be manufactured separately using the same mold, then assembled at the destination. This segmentation allows for reduced mold complexity while maintaining ease of manufacture, as each face plate can be produced independently using the universal mold design.

Inventive Principle:

Principle #1Segmentation

2Ease of manufacture

If at least three face plates have the same structure, then injection molding with same mold is possible, but the trash can assembly flexibility is reduced

Engineering Contradiction:

Improvemold sharing capabilityVSAvoidassembly flexibility

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by maintaining the same basic structure and mold design for at least three face plates (front, rear, left, right) while introducing local variations through different positioning, orientation, or minor structural modifications. This allows the same mold to produce multiple face plates while maintaining sufficient assembly flexibility for different configurations.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent utilizes asymmetry by designing face plates with the same basic structure but different orientations or positioning arrangements. This allows the same mold to produce varied face plate configurations that can be assembled in different ways, maintaining both mold sharing capability and assembly flexibility.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS20250115423A1Trash can easy to produce

Publication Date: 2025.04.10 HANGZHOU YIXIANG TECH RES & DEV CO LTD

AI summary

The present disclosure provides a trash can easy to produce. The trash can includes a left face plate configured to seal a left side of the trash can, a right face plate configured to seal a right side of the trash can, a front face plate configured to seal a front side of the trash can, a rear face plate configured to seal a rear side of the trash can, and a bottom face plate configured to seal a bottom of the trash can. At least one of the left face plate, the right face plate, the rear face plate and the front face plate is clamped and fixed to the bottom face plate. At least three of the left face plate, the right face plate, the rear face plate and the front face plate have a same structure.