| 摘要 |
A baulkring-type synchronizer (18) includes cone clutch friction surfaces (24,48 and 26,50) and jaw clutch teeth (36b,28 and 36c,30) for frictionally synchronizing and positive connecting gears (14,16) to a shaft (12). A plurality of rigid members (72) is drivingly interposed between blocker teeth (44,46) affixed to baulkrings (40,42) and self-energizing ramp surfaces (71a, 71b, 73a, 73b) on self-energizing members (70,72) mounted on an outer circumference of a hub 32 affixed to the shaft (12). A shift sleeve (34) is slidably splined to the hub (32) and is moved by an operator shift force (Fo) and an additive force (Fa) provided by the self-energizing ramp surfaces. Both forces (Fo and Fa) react against the blocker teeth to engage the friction surfaces. The self-energizing members (70,72) are slidable relative to the hub and are axially centered resiliently on the hub by detent assemblies (76,78).
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