| 摘要 |
<p>A pin-type, double-acting synchronizer mechanism (10) with friction rings (26, 46 and 28,48), jaw members (30,34 and 32,36) axially secured together by retainers (44), circumferentially spaced pins (50) including blocker shoulders for preventing asynchronous engagement of the jaw clutches, and pre-energizer assemblies (52) to ensure initial engagement of the friction rings and blocker shoulders in response to initial engaging movement of a shift flange (42), and self-energizing ramps (20a-20d and 62a-62d). The jaw members (34,36) are secured against axial movement relative to the flange (42) by a plurality of axially extending retainers (44) with radially inwardly extending end portions (44b) which embrace axially outward surfaces (34a,36a) of the jaw members (34,36), the retainers (44) sliding axially close to the inner surfaces of the friction rings (46,48). <IMAGE></p> |
