| 摘要 |
PURPOSE:To reduce friction between a vane and a cylinder as well as to prevent these members from being worn away, by setting up a side plate closing each opening end at both sides of the cylinder so as to make it turn round a shaft center of the cylinder, while connecting the vane pivotally to this side plate. CONSTITUTION:Each opening end at both sides of a cylinder 2 is closed up by a side plate ring 5 being supported by an end plate 7 from outside. This side plate ring is set up free of rotation around the center O' congruous with a shaft center of the cylinder. As for a vane 3, since a pin 8 being projectingly installed in an axial direction from each end face at both sides of its longitudinal midway part is pivotally supported by each side plate ring at both sides, its motion is regulated in consequence, so that friction between the cylinder and the vane becomes smaller, thus wear in these parts is prevented from occurring. |
