LENS BARREL

摘要

PURPOSE:To reduce the number of worked cam grooves to one by clamping a rotatable eccentric pin as a guide pin and a stopper pin for specifying its angle of rotation coaxially and mutually. CONSTITUTION:Figures are a sectional and a plane figure of a principal part where the eccentric pin 3 and stopper pin 4 are clamped coaxially and mutually and one cam groove is worked. The eccentric pin 3 adjusted to infinite distance engages with the cam groove 1d and is clamped by a screw 7 on the same axis with the stopper pin 4 which specifies its angle of rotation. This sotpper pin 4 is longer than the external diameter of the eccentric pin 3 in a cam rotation direction, but short enough in a cam groove side face direction not to contact the cam groove side face by the eccentricity of the eccentric pin 3.