| 摘要 |
PURPOSE:To remove the lateral load of a piston, by disposing a guide coupled to a crank pin and moving in the vertical and lateral directions, in a guide sliding only in the vertical direction so that the later mentioned guide transmits the drive force of the crank pin to a piston coupling section. CONSTITUTION:A vertically and laterally movable first slider 35 coupled to a crank pin 33 through a bearing 54, is disposed, slidably in the lateral direction, in a second slider 36 slidable only in the vertical direction on a slide guide 59 which is disposed on cylinders 31, 31a. Further, the vertical outer surfaces of the second slider guide 36 abut against the abutting parts 58, 58a of a piston coupling section 44, and therefore, the force of the crank pin 33 is transmitted to pistons 32, 32a. With this arrangement no lateral load produced by the crank pin 33 is transmitted to the pistons 32, 32a due to slips on the abutting parts 58, 58a. |
