Tub Insert System to Prevent Shipping Damage in Top-Loading Washers
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Solution Overview
Problem
Top-loading washing machines are prone to damage during shipping and handling due to the wash tub moving relative to the cabinet, causing impacts that can result in cosmetic defects.
Innovation Solution
A tub insert system made from a folded blank, comprising a bottom panel, a top panel, and an insert panel that forms a three-dimensional V-shaped structure, with optional foam locking members to prevent the wash tub from moving by biasing tabs outward and contacting the cabinet rim and tub, thereby minimizing relative movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wash tub is allowed to move freely within the cabinet, then the washing machine can operate normally with proper clearance, but the tub may impact the cabinet during shipping and handling causing damage
Solution Approach 1:
The blank is divided into multiple functional panels (bottom panel, top panel, insert panel with first and second sections) that can be folded into distinct three-dimensional structures. Each panel performs a specific function: the bottom panel provides base support, the top panel offers upper coverage, and the insert panel creates the V-shaped stabilizing structure that contacts the tub. This segmentation allows the packaging to provide protection while maintaining operational clarity.
Solution Approach 2:
The blank incorporates multiple fold lines that enable dynamic transformation from a flat two-dimensional structure to a three-dimensional configuration during assembly. The fold lines allow the panels to articulate and form the final protective structure around the tub, providing adaptability during installation while maintaining structural integrity for protection during shipping.
2Reliability
If a complex locking mechanism is used to prevent tub movement, then protection against shipping damage is improved, but device complexity increases
Solution Approach 1:
Multiple protective functions are merged into a single integrated blank structure. The bottom panel, top panel, and insert panel are all connected and form a unified protective system that surrounds the tub. This merging eliminates the need for separate locking mechanisms while providing comprehensive protection against shipping damage.
Solution Approach 2:
The insert panel's V-shaped structure automatically biases the tabs outward through its geometric configuration, creating a self-locking mechanism that prevents tub movement without requiring additional locking components. The structure serves its own locking function through its inherent geometry, simplifying the overall system while maintaining reliability.
3Reliability
If tabs are biased outward to contact the cabinet rim, then stabilization is improved, but the risk of tab deformation increases
Solution Approach 1:
The insert panel applies biasing force at specific localized points where the V-shaped structure contacts the tabs, rather than applying force uniformly across the entire tab structure. This localized application of force provides effective stabilization while minimizing the risk of deformation by concentrating the stabilizing action at optimal contact points.
Solution Approach 2:
The foam locking members are positioned to contact the cabinet rim before the tabs experience excessive force during shipping. This pre-positioned cushioning element absorbs and distributes forces, protecting the tabs from deformation while maintaining the stabilizing contact with the cabinet rim.
Data Source
AI summary
A washing machine tub insert system is provided that prevents the wash tub from impacting the washing machine cabinet during shipping and handling. The tub insert system may be made from a bottom panel and an insert that lock together. The insert outwardly biases locking members against the cabinet rim and against the tub to minimize relative movement of the tub and cabinet, thereby reducing or eliminating the possibility of the wash tub damaging the washing machine cabinet.