Two-Component Interlocking Tub Support for Shipping Damage Prevention
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Solution Overview
Problem
Top-loading washing machines experience tub movement during shipping and handling, causing dents in the cabinet due to the limited clearance between the tub and cabinet, necessitating a device to lock the tub in place.
Innovation Solution
A tub support system comprising interlocking lower and upper tub supports made from folded blanks, which contact opposing sides of the tub and cabinet to prevent movement, forming a rigid structure that secures the tub during shipping and handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the tub is left unsecured during shipping, then the packaging is simple and easy to assemble, but the tub moves relative to the cabinet causing dents and cosmetic damage
Solution Approach 1:
The support device is divided into two separate components: a lower support that contacts the tub and an upper support that contacts the cabinet. These segments are assembled together during packaging to form a complete support structure, balancing ease of manufacture with effective protection.
Solution Approach 2:
The support device is pre-configured with specific geometric features (interlocking shapes, contact surfaces) that enable it to automatically secure the tub in the correct position once assembled, preventing movement before shipping begins.
2Object-affected harmful factors
If a support device is added to prevent tub movement, then cosmetic damage is prevented, but the device complexity increases with additional components
Solution Approach 1:
The upper support and lower support are designed to interlock and function as a unified support system. When assembled, they work together to simultaneously contact both the tub and cabinet, providing stable support with minimal separate components.
Solution Approach 2:
Each support component is designed to perform multiple functions: the lower support contacts the tub to prevent movement, the upper support contacts the cabinet for stability, and together they form an interlocking structure that secures the assembly during shipping.
3Volume of moving object
If the clearance between tub and cabinet is minimal (one inch), then the machine design is compact, but the tub easily impacts the cabinet during movement
Solution Approach 1:
The support device acts as an intermediary structure between the tub and cabinet. It provides a mechanical connection that maintains the minimal one-inch clearance while preventing direct impact by distributing forces through its interlocking geometry.
Data Source
AI summary
A tub support system that fits inside the top opening of a washing machine to prevent the wash tub from moving relative to the cabinet during shipping and handling. The tub support system comprises two separate components held in interlocking engagement. One component contacts the tub and the other component contacts the cabinet.