Connector Housing Retaining Arm Slanting Surface Design

The lance beak retaining portion is segmented into multiple slanting surfaces (first slanting surface, second slanting surface, and third slanting surface) with different inclination angles. This segmentation allows each surface to perform a specific function: the first surface guides initial insertion, the second surface prevents striking abutment with a gentler angle, and the third surface ensures proper retention. This resolves the contradiction by improving connection reliability through functional segmentation while managing the increased structural complexity.

Different regions of the lance beak are given different local qualities through varying slanting angles. The first slanting surface has a steeper angle for guidance, the second slanting surface has a gentler angle to prevent striking abutment, and the third slanting surface provides retention. This local differentiation of geometric properties allows the single retaining arm structure to perform multiple functions, improving reliability without requiring multiple separate components.

The insertion process is segmented into phases handled by different slanting surfaces. The first slanting surface handles initial contact with a moderate angle, while the second slanting surface with a gentler angle specifically addresses the striking abutment phase. This segmentation allows the system to distribute the insertion load across multiple surfaces, preventing the high peak forces that cause striking abutment and enabling faster, smoother insertion.

The second slanting surface is designed with a gentler inclination angle than would be minimally required for retention alone. This excessive gentleness beyond what is strictly necessary prevents striking abutment by reducing the load peak, thereby enabling faster insertion speeds without compromising the retaining function of the third slanting surface.

The lance beak is segmented into multiple slanting surfaces that can be manufactured as integrated features of a single molded or machined component. While the geometry is more complex than a single surface, the segmentation is achieved through conventional manufacturing processes, and the resulting precision in preventing shaving and ensuring complete insertion outweighs the moderate increase in manufacturing complexity.

The different slanting surfaces provide locally optimized geometric qualities that prevent shaving during insertion. The gentler second slanting surface specifically prevents the high-load striking abutment that causes shaving, while the other surfaces provide guidance and retention. This local geometric optimization ensures complete insertion without requiring post-manufacturing adjustments.