Synchronizer assembly

Details Synchronizer assembly Synchronizer assembly

1976-01-28

1977-04-19

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

Progressive engagement

F16D 2306

Patent

active

040183190

ABSTRACT:
An improved synchronizer assembly for use with jaw tooth clutch means in speed change gearing of the type wherein an axially movable clutch sleeve is interposed between two gears rotatably journalled on the same shaft for the purpose of selectively connecting the gears with the shaft, with the assembly including two friction cone synchronizer rings which are spaced apart by blocker pins, said assembly further including longitudinally split pin assemblies that cooperate with the clutch sleeve and effect snap judgment of the clutch sleeve teeth with the gear clutch teeth. The improved split pin assemblies include central annular grooves having opposed dual inner and outer ramps, the steep inner ramps permitting positive force transfer while the shallower outer ramps enhance the return of the clutch sleeve to its center position. The synchronizer ring recesses that receive the split pin ends are loop-shaped to permit greater angular movement and reduce spring set while each blocker pin includes a pair of oppositely directed and symmetrical transversely split short pins that are case hardened and have portions thereof cast into their associated synchronizer rings, the latter preferably being of diecast aluminum.

REFERENCES:
patent: 3078975 (1963-02-01), Eaton
patent: 3910390 (1975-10-01), Eichinger

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