Vehicle Headlamp Leveling Device Abutment Structure

The patent applies local quality by creating a recessed portion in the casing body at the location where a protrusion or rib would otherwise cause surface sinking. This localized structural modification allows the casing to maintain uniform thickness overall while providing specific areas with reduced thickness to accommodate internal protrusions, preventing surface deformation and maintaining structural stability without complicating the overall manufacturing process.

The patent introduces a recessed portion at the specific location where the fixing wall abuts against the casing body. This localized thickness reduction creates a precise abutment surface that ensures a stable mounting distance between the lamp body and leveling device. The recessed portion acts as a定位 feature that prevents backlash while maintaining relative manufacturing simplicity by only modifying a specific area rather than the entire casing structure.

The patent resolves the conflict between strength and shape by creating a recessed portion that corresponds to the location of internal protrusions or ribs. This localized recess compensates for the volume displacement caused by the protrusions, allowing the exterior face to remain flat and undistorted while the internal protrusions provide the necessary structural support. The recessed portion acts as a compensatory feature that maintains exterior aesthetics and functionality.

The patent applies local quality by creating a recessed portion at the critical abutment location rather than uniformly reducing thickness throughout the casing. This localized approach minimizes material usage while maintaining thermal stability at the critical mounting interface. The recessed portion provides a stable abutment surface that resists thermal deformation, while other areas of the casing can use thinner material to reduce overall weight and material cost.