Dishwasher Rack Height Adjuster with Locking Clip for Stability
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Solution Overview
Problem
Existing dishwasher racks with height adjustment mechanisms often compromise stability for adjustability, failing to provide a simple and stable solution for washing dishes of varying heights.
Innovation Solution
A height adjustment mechanism featuring vertically-oriented side rails and a locking system with adjuster arms and clips that securely engage with the dishwasher tub, preventing vertical and rotational movement of the dish rack, ensuring stability and adjustability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a height adjustment mechanism is provided to allow vertical shifting of the dish rack, then adaptability is improved, but stability deteriorates
Solution Approach 1:
The adjuster arm is designed to be movable along the side rail, allowing the dish rack to be dynamically adjusted to different heights. The arm can slide freely during adjustment but locks into position when a locking tab engages with a locking boss, providing dynamic adaptability while maintaining static stability at each position.
Solution Approach 2:
The locking tab and locking boss act as intermediary elements between the adjuster arm and the side rail. The locking tab on the adjuster arm engages with the locking boss on the side rail to prevent vertical movement, while the interference ribs on the adjuster arm engage with the side rail to prevent rotational movement, thus mediating between adjustability and stability requirements.
2Stability of the object's composition
If a locking system with multiple components is used to prevent vertical and rotational movement, then stability is improved, but device complexity increases
Solution Approach 1:
The adjuster arm integrates multiple functions into a single component: it provides vertical adjustment through sliding movement, vertical locking through the locking tab and locking boss engagement, and rotational prevention through the interference ribs. This merging of functions reduces the number of separate parts needed while maintaining stability.
Solution Approach 2:
The adjuster arm serves multiple purposes: it acts as a vertical positioning mechanism, a locking mechanism, and a rotational constraint. The single component performs what would traditionally require multiple separate mechanisms, simplifying the overall device while ensuring stability through multiple engagement points.
Data Source
AI summary
A dishwasher has an interior with a tub and a dish rack slidably attached to the tub. The dish rack has vertically-oriented side rail and a height adjustment system. The adjustment system includes height adjustment mechanisms alongside the walls of the dish rack for vertically shifting the dish rack between lowered and raised positions relative to the tub. Each of the adjustment mechanisms includes an adjuster arm fixed vertically relative to the tub, with a locking boss at the first end, and a locking clip on the adjuster arm having at least one locking tab adapted to couple with the locking boss to prevent the rack from shifting vertically relative to the adjuster arm. The locking clip has a pair of interference ribs engaging a pair of side rails to prevent rotational movement of the rack with respect to the dishwasher.