Synchronizer with self-energizing

Details Synchronizer with self-energizing Synchronizer with self-energizing

F - Mech Eng,Light,Heat,Weapons

16

H

F16H 3/12 (2006.01) F16D 23/06 (2006.01)

Patent

CA 2138431

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) are drivingly interposed between blocker teeth (44,46) affixed to baulkrings (40,42) and self-energizing ramp surfaces (70a- 70d) defined 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 (F o) and an additive force (F a) provided by the self-energizing ramp surfaces. Both forces (F o and F a) react against the blocker teeth to engage the friction surfaces. The self-energizing ramp surfaces may be long enough to assist shift completion as unblocking occurs.

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