Sliding Bezel Assembly for Two-Axis Grill Knob Alignment
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Solution Overview
Problem
Existing bezel assemblies for gas-fired barbecue grills struggle with alignment issues due to limited adjustability along a single axis, leading to aesthetic and functional problems, such as debris accumulation and difficulty in aligning the bezel with the valve shaft, which is particularly challenging when the gas control valve is not directly mounted to the control panel.
Innovation Solution
A bezel assembly that allows for simultaneous adjustment along two axes, comprising a bezel plate with parallel slots and a panel with transverse slots, anchored by features that enable sliding engagement, allowing the bezel to be precisely aligned with the valve shaft and control knob.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a bezel assembly with pre-drilled mounting holes is used, then the bezel can be attached to the appliance wall, but alignment with the valve shaft and control knob becomes difficult or impossible without bending or damaging components
Solution Approach 1:
The patent applies the dynamics principle by replacing fixed pre-drilled holes with slots that allow the bezel to be dynamically adjusted during assembly. The slots enable the bezel to shift position relative to the mounting holes, providing adaptability for alignment while maintaining a fixed structure once positioned. This resolves the contradiction by making the assembly process easier without sacrificing alignment precision.
Solution Approach 2:
The patent applies parameter changes by modifying the mounting hole geometry from circular holes to elongated slots. This parameter change in the mounting feature shape allows for positional adjustment along the slot length, enabling alignment compensation for tolerance variations while maintaining structural integrity and aesthetic appearance.
2Adaptability or versatility
If the gas control valve is mounted to a component other than the control panel, then various grill designs can be accommodated, but alignment of the bezel with the valve shaft becomes significantly more difficult due to tolerance accumulation
Solution Approach 1:
The patent applies the dimensionality change principle by introducing an additional degree of freedom for adjustment through the slot geometry. Instead of being constrained to a single point location, the mounting features can shift along the elongated dimension of the slots, providing tolerance compensation in a directional manner that accommodates various valve mounting positions while maintaining alignment precision.
Solution Approach 2:
The patent applies dynamics by enabling the bezel assembly to be dynamically repositioned during installation through the slot mechanism. This allows assemblers to accommodate tolerance variations and different valve positions by shifting the bezel along the slots, thereby maintaining alignment precision across various grill designs without requiring precise pre-drilling.
3Manufacturing precision
If adjustment slots are provided in the bezel, then alignment along one axis can be improved, but adjustment along the perpendicular axis remains limited
Solution Approach 1:
The patent applies segmentation by dividing the adjustment function into two independent slot features oriented perpendicular to each other. Each slot handles adjustment along one axis, and together they provide comprehensive two-dimensional adjustment capability. This segmentation allows the bezel to be independently positioned along both horizontal and vertical axes, achieving full alignment precision while maintaining design simplicity.
Data Source
AI summary
The present invention is directed to a control knob bezel plate for a barbecue grill. The preferred bezel plate assembly of the present invention comprises a bezel plate, a control knob, a control panel, a gas control valve, and two anchors. The preferred bezel plate includes a raised annular portion which serves as a frame for the control knob. Both the preferred bezel plate and the control panel include two parallel slots which are adapted to engage with the anchors. The two parallel slots in the bezel plate are aligned generally transverse to the two parallel slots in the control panel. The bezel plate is connected to the control panel by means of the anchors which are configured to slide within the slots. In this manner, the bezel plate can be adjusted in two dimensions with respect to the panel.