| 摘要 |
An end surface of a cylinder head (3) and an end surface of a frame (2), which face a cylinder (1), are formed in a ring-like recessed cross-sectional shape which is concentric with the inner peripheral surface (1b) of a cylinder, and the end surfaces have grooves (2a, 3a) into which vane aligner sections (5c, 5d, 6c, 6d) are fitted in a slidable manner. Portions of the inner peripheral surfaces (2aa, 3aa) of the grooves (2a, 3a) are cut out so that the height of the inner peripheral surfaces (2aa, 3aa) is reduced at the portions. Protrusions (2g, 3g) which are uncut portions of the inner peripheral surfaces (2aa, 3aa) of the grooves (2a, 3a) are set at an increased height within a range in which the protrusions (2g, 3g) do not come into contact with a rotor section (4a). |
