Dishwasher Rack Height Mechanism for One-Handed Vertical Adjustment
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Solution Overview
Problem
Existing dishwashing appliance rack adjustment mechanisms require users to manipulate both the rack and adjustment features simultaneously, making them difficult to operate and often preventing the removal of the rack for repair or cleaning.
Innovation Solution
A support mechanism with a track system that allows the rack assembly to be adjusted vertically by sliding movement, enabling independent lifting or lowering without simultaneous operation of the adjustment feature, and allowing for removal and reinstallation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple moving parts with simultaneous manipulation features are used for height adjustment, then height adjustability is achieved, but ease of operation deteriorates due to complex user manipulation requirements
Solution Approach 1:
The height adjustment mechanism is segmented into independent components: a rack assembly with multiple discrete vertical positions and a support mechanism with separate adjustment features. Each shelf can be independently positioned at different heights by simply lifting and placing it on the support mechanism, eliminating the need for simultaneous manipulation of multiple components.
Solution Approach 2:
The rack assembly is designed to be self-adjusting through its modular structure. The support mechanism features include positioning elements that automatically engage with the rack assembly when placed at the correct height, eliminating the need for active user manipulation during the adjustment process.
2Stability of the object's composition
If fixed support structures are used for rack assembly, then structural stability is improved, but adaptability deteriorates due to inability to adjust height or remove rack
Solution Approach 1:
The support mechanism transitions from a static fixed structure to a dynamic adjustable system. The support mechanism includes movable positioning elements and engagement features that allow the rack assembly to be easily repositioned to different heights while maintaining structural stability when engaged. The system can also be completely disassembled for removal.
Solution Approach 2:
The rack assembly and support mechanism are designed with nested components that fit together. The support mechanism features nested positioning elements within the rack assembly structure, allowing for compact storage when not in use and easy engagement/disengagement for height adjustment and removal.
3Manufacturing precision
If complex adjustment features with multiple moving parts are used, then height positioning precision is improved, but device complexity increases
Solution Approach 1:
The complex adjustment features are extracted from the rack assembly itself and placed in the support mechanism. The rack assembly becomes a simple, stable structure without moving parts, while the support mechanism contains all the positioning and adjustment features. This separation simplifies the overall system by removing complexity from the primary structural component.
Data Source
AI summary
A support mechanism for height adjustability of a rack assembly or other drawer-like feature of an appliance such as e.g., a dishwashing appliance is provided. The support mechanism includes a track for controlling the movement of the rack between different vertical levels. For certain embodiments, a user can adjust the height of the rack assembly by lifting and/or lowering the rack assembly directly and without a requirement of simultaneously depressing or squeezing the support mechanism or items thereon.