Quick Connector Spacer Geometry for O-Ring Retention

The spacer incorporates angled surfaces (first and second angled surfaces) that are asymmetric relative to the axial centerline, creating non-uniform contact points with the o-ring. This asymmetric geometry ensures the o-ring is urged toward the inside surface at specific locations, preventing mispositioning and dislodging during spigot insertion while maintaining manufacturing feasibility.

The spacer design transitions from a conventional cylindrical or rectangular cross-section to a more complex three-dimensional form with angled surfaces that slope relative to the axial centerline. This dimensional change creates targeted force components that push the o-ring radially outward toward the inside surface, adding functional capability without excessive complexity.

The angled surfaces are positioned and angled specifically to create localized urging forces on the o-ring at critical locations. The first and second angled surfaces apply force at different axial positions, ensuring the o-ring is pushed toward the inside surface at the sealing interface while maintaining proper axial positioning, thus achieving both sealing effectiveness and position accuracy.

The spacer is designed to pre-position and pre-compress the o-ring against the inside surface before spigot insertion is complete. This preliminary action ensures the o-ring is already in the correct position and engaged with the sealing surface, preventing mispositioning during insertion and ensuring immediate sealing effectiveness.