| 摘要 |
The present invention relates to a cylinder head assembly for preventing further damage of a valve train such as a yoke, a rocker arm, etc. by preventing twisting of the yoke when a problem such as damage of a rotocap, etc. occurs. In the cylinder head assembly including a yoke (60) moving upward and downward by a rocker arm (50) at an open part (22) of a cylinder head (20), a valve (70) moving upward and downward with combined with the yoke (60), a rotocap assembly (80) fixed to a stem end of the valve (70), and a valve spring (90) for providing an ascending restoring force to the valve (70) under the condition that the top of the valve spring (90) is supported by the rotocap assembly (80), the yoke (60) includes: a guide lug (62) which is integrally projected from one side of the yoke (60); and a slide contact part (22a, 66) for slide-guiding vertical motion of the guide lug (62) and preventing rotation of the guide lug (62), and formed to a part at which the cylinder head (20) and the guide lug (62) face. Though the rotocap assembly is to rotate the yoke due to damage or break-down of the rotocap assembly, the yoke is not rotated because the guide lug of the yoke and internal surface of the cylinder head are guided by flat slide contact part, and thus a contact part of the yoke and the rocker arm is kept without dislocated, thereby preventing secondary damage of the valve train. |
