Smart recyclable bin with reclined handguard

The CAD design for a smart receptable with a reclined handguard and initial mockup design 🗑️

Overview

The motivation for the project is to create a replication of a smart recyclable bin with a modification for a reclined handguard that will avoid any pest or vermins from entering the bin. This comes from noticing that bin lids are often left open and pests are able to enter the bin 😖. This applies the ideation and computer-aided engineering on behalf of the developers. The following is applied for this design:

  1. Problem Identification & Conceptualization
    • Observed that conventional bin lids are often left open, allowing pests and vermin to enter.
    • Proposed a smart recyclable bin design incorporating a reclined handguard to physically block entry while still allowing easy disposal of waste.
  2. Initial Design in CAD
    • Created a 3D model of the smart bin using computer-aided design (CAD) software.
    • Incorporated the reclined handguard into the lid design, ensuring ergonomic access and proper waste disposal flow.
  3. Structural & Safety Considerations
    • Designed secure attachment points for the handguard to ensure stability.
    • Applied tolerances and constraints in CAD to maintain strength under repeated use.
  4. Assembly & Functional Testing
    • Integrated the handguard component into the bin assembly virtually to ensure proper fit.
    • Simulated the lid’s opening/closing motion to confirm the handguard’s pest-blocking function without hindering usability.

You may see below the different CAD views of the made smart recyclable bin

Learnings

The learnings can be made from the way I reverse engineered what I initially saw in an ad (forgot lang which company sells this kind of smart bins with the solar panels on top), to revising the design with the intention of eliminating the issues we have initially identified. What I did not cover in this project is the other functionalities beyond the handguard like that of the placement of other peripherals and parts but that is beyond the scope of the project already. With this, I have demonstrated the following in this project:

  • Practical Problem-Solving – Applied engineering design principles to address a real-world sanitation and pest control issue.
  • CAD Proficiency – Enhanced skills in modeling functional assemblies with integrated safety features.
  • Design for Safety – Learned the importance of ensuring parts are securely attached, structurally sound, and safe for regular use.
  • Simulation-Driven Validation – Used CAD simulations to test mechanical strength, motion, and clearances before fabrication.
  • Ergonomics & Accessibility – Balanced pest prevention with ease of use, ensuring the reclined handguard did not obstruct proper waste disposal.
  • Iterative Design Thinking – Refined the design through multiple checks and simulations to ensure functionality and durability.

PS. Thanks to my co-CAD developer for this project; Shaya!