Curved Surface Positioning for Liquid Jet Head Alignment

The patent applies curvature by forming at least one of the contact parts with a curved surface shape (cylindrical, conical, or spherical surface) instead of flat surfaces. This curved surface design ensures single-point contact between the protruding part and contact member, eliminating the multipoint contact that causes error accumulation. The curved contact surfaces are specifically configured with central axes in a skew positional relationship to achieve and maintain single-point contact during displacement.

The curved surface configuration of the contact parts creates a geometric constraint that maintains stable single-point contact. The skew positional relationship between the central axes of the curved surfaces ensures that as the contact member displaces, the contact point remains unique and stable, preventing both multipoint contact errors and contact instability.

The patent implements single-point contact through curved surfaces (cylindrical, conical, or spherical) with skew central axes. While the contact surface geometry is more complex than flat surfaces, the overall structure remains relatively simple as it only requires forming curved surfaces on existing contact parts without adding additional positioning mechanisms or components.