Interference-Fit Cover-to-Casing Joint for Food Housing Sealing

The groove and step geometries are pre-designed with specific dimensional relationships (groove width slightly larger than step width, connecting radius at groove base) that enable self-alignment and facilitate assembly while maintaining interference-fit sealing reliability. The preliminary geometric configuration allows the cover to be easily assembled onto the casing without requiring force or complex alignment procedures.

The groove is designed with non-uniform dimensions: the width at the top (first portion) is larger to facilitate assembly, while the width at the bottom (second portion) is smaller to maintain interference-fit sealing. The connecting radius at the groove base creates a transition zone that ensures proper contact between the step and groove surfaces, providing both assembly ease and sealing performance through localized dimensional variation.

While the overall groove shape is symmetrical T-shaped to allow bidirectional closure, the groove incorporates asymmetric local features (connecting radius positioned at the base, specific width variations along the groove depth) that guide the assembly process and reduce sensitivity to manufacturing tolerances. This combination of global symmetry and local asymmetry provides both adaptability and manufacturing robustness.