| 摘要 |
PURPOSE:To remove incorporating mistakes by enabling a pivotal support plate to be pivoted about a support shaft, held and energized by a coil spring. CONSTITUTION:Since a pivotal support plate 18 is moved pivotably to the upper surface of a movable crank beam 5 about a support shaft 17 and held and energized at a erected position by a coil spring 20, a flanged portion f supports a mounting portion ts side tending to slant downward to hold stably a valve V and eliminate incorporating mistakes due to defective positions while the pivotal support plate 18 is retreated from the moving track of an intake pipe Ps even if the intake pipe Ps is movably pressed to the mounting portion ts by a pressing pin 55 of an incorporating mechanism D, so that the incorporating operations can avoid obstacles. |
