CLEANING MODE SWITCHING MECHANISM OF INJECTION NOZZLE

摘要

PROBLEM TO BE SOLVED: To provide a cleaning mode switching mechanism of an injection nozzle which suppresses or restrains axial runout and slip in switching a passage of a second transmission mechanism.SOLUTION: A cleaning mode switching mechanism 1 of an injection nozzle includes: a rotation shaft 11 rotating by receiving power of a drive mechanism and a rotation cylinder covering an outer circumference of the rotation shaft; a first transmission mechanism 20 transmitting rotation force having a different rotation speed from the drive mechanism and a second transmission mechanism 30 arranged below the first transmission mechanism. The second transmission mechanism includes: a first clutch gear 31 and the second clutch gear 33 which transmit the power from the drive mechanism to the rotation cylinder; a drive clutch shaft 35 having a predetermined shape which is inserted in shaft centers of the first clutch gear and the second clutch gear; and a rotation cylinder gear 37 which engages with the first clutch gear and the second clutch gear.SELECTED DRAWING: Figure 2