Pocket handle assembly for an appliance
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Solution Overview
Problem
Dishwasher pocket handles require a large cutout in the door's front panel, leading to significant deflection and weakening of the door when opened, compromising its structural integrity.
Innovation Solution
Incorporating projections on the pocket handle that engage a panel bracket within the door, resisting flexing and increasing the door's stiffness by distributing the opening force through mechanical interference between the projections and slots on the bracket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a large cutout is made in the front panel for the pocket handle, then the user can easily open the door, but the door structure is weakened and significant deflection occurs
Solution Approach 1:
The door structure is segmented into multiple components: front panel, back panel, top panel, and a reinforcing bracket assembly. The bracket is divided into a first bracket portion attached to the front panel and a second bracket portion attached to the back panel, creating a distributed reinforcement system that addresses the weakness caused by the cutout while maintaining ease of operation.
Solution Approach 2:
The reinforcing bracket extends in multiple dimensions - horizontally across the front panel and vertically between the front and back panels. This three-dimensional bracket structure provides reinforcement in multiple directions, counteracting the deflection caused by the large cutout while preserving the pocket handle's operational ease.
2Ease of operation
If a large cutout is made in the front panel for the pocket handle, then the pocket handle can be properly installed, but the front panel experiences significant flexing when the door is pulled open
Solution Approach 1:
The reinforcing bracket is pre-installed and attached to both the front and back panels before the pocket handle is installed. This preliminary reinforcement structure is already in place to counteract flexing forces, allowing the pocket handle to function properly without causing excessive front panel flexing during door operation.
3Weight of moving object
If the door panel is made thinner to reduce weight, then the appliance becomes lighter, but the door deflection increases when opened
Solution Approach 1:
The door employs a composite structure combining thin front and back panels with a reinforcing bracket assembly. The bracket acts as a structural composite element that provides the strength and stiffness normally requiring thicker panels, while allowing the use of thinner, lighter panels to reduce overall door weight.
Data Source
AI summary
A door for an appliance includes a front panel defining an opening. A top panel is positioned at a top portion of the front panel above the opening of the front panel. A top panel bracket is disposed within the front panel. The top panel bracket is mounted within the front panel such that the top panel bracket is fixed relative to the front panel. The top panel is positioned on and mounted to the top panel bracket. The top panel bracket defines a slot. A pocket handle is disposed at the opening of the front panel. The pocket handle includes a projection. The projection is disposed within the slot of the top panel bracket.