VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To reduce a manufacturing cost by realizing such a simple constitution of an assembling angle operating mechanism that the number of parts is reduced.

SOLUTION: The assembling angle operating mechanism 4 comprises: diameter direction groove 10 arranged to a drive plate 3; an intermediate rotor 5 having a spiral groove 15; a conversion guide 11 coupled to be integrally rotatable to a driven shaft member 9 so as to be opposed to the radial direction groove 10 and the spiral groove 15, and having a guide hole 12 inclined in a radial direction to a circle with rotation axial line as a center; and a ball 16 displaceably engaged to the radial direction groove 10 and the spiral groove 15 in a state of being guided and engaged to the guide hole 12. When a rotation operating force is inputted to the intermediate rotor 5, the ball 16 is displaced in the radial direction by guiding action of the spiral groove 15. At this time, a drive plate 3 and the driven shaft member 9 are relatively rotated through cam action by the ball 16 and the guide hole 12.

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