Pivot pin structure

Abstract

A pivot pin structure includes an assembling section formed on a surface of the pivot pin for assembling with at least one bridge member. The bridge member has a pivot section, which rotatably encloses the assembling section of the pivot pin. On the assembling section are disposed multiple ridge sections and valley sections non-parallel to the axis of the pivot pin. The ridge sections and valley sections are formed in a cross-sectional direction of the pivot pin normal to or approximately normal to the axis of the pivot pin and continuously arranged on the surface thereof. By means of the ridge sections and valley sections of the assembling section, the pivot pin can be assembled with the bridge member in an interference-fit manner to naturally provide a guide and restriction effect and lubricant-reserving effect. Therefore, the bridge member is restricted to only rotate around the pivot pin without axially displacing.

Dependencies are inferred from the claim text.