Patent ID: 8021073
Filing Date: 2011-09-20
Classification: F16H,Y10T

Abstract:
1. A shaft member coupling structure in which two shaft members are lockably coupled in a condition wherein the two shaft members coaxially extend with a coupling part in the center, comprising: a first shaft member having a proximal end and a distal end; a second shaft member having a proximal end and a distal end a fitting concave portion axially extending and formed at the proximal end of said first shaft member and a fitting convex portion axially extending and fitted into the fitting concave portion, said fitting convex portion being formed at the proximal end of the second shaft member; a coupling pin inserted into coupling holes that pierce the first and second shaft members in a direction perpendicular to the axis in a part in which the fitting concave portion and the fitting convex portion are fitted and the first and second shaft members are lockably coupled with the coupling pin in the center; an annular holding groove concave in a circumferential direction is formed in a part in which the coupling hole is formed on a periphery of the first shaft member provided with the fitting concave portion; and both ends of the coupling pin inserted into the coupling holes are covered with a ring fitted into the annular holding groove; said distal end of the first shaft member extends from the proximal end of the first shaft member and includes an oil chamber groove and a guide land formed thereon; said distal end of the second shaft member extends from the proximal end of the second shaft member and includes at least one groove and a guide land formed thereon, wherein the second shaft member includes a right groove, a central land, a left groove and a left land for providing communication and terminating communication between an inside branched oil passage and outside branched oil passages for executing clutch control.