Synchronizing mechanism for a gearbox

Details Synchronizing mechanism for a gearbox Synchronizing mechanism for a gearbox

1987-03-20

1989-02-28

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Progressive engagement

192 67A, F16D 2308

Patent

active

048077330

ABSTRACT:
A synchronizing mechanism in a gearbox, preferably for vehicles. The synchronizing mechanism includes an outer synchronizing ring formed with exterior detent teeth and limited rotatability relative a driving disc attached to a shaft. The mechanism also includes an intermediate synchronizing ring which is non-rotatably attached to a gear rotatably mounted on the shaft, and an inner synchronizing ring. The inner and the outer synchronizing rings are joined to each other for torque transmission, the torque acting on the inner synchronizing ring during the synchronizing phase being transferred to the outer synchronizing ring and causing the outer synchronizing ring to rotate relative the driving disc into a detent position. In the detent position, the detent teeth prevent axial displacement of a clutch collar surrounding the driving disc, and thereby engagement of the clutch collar with the gear. Since a large torque acts on the outer synchronizing ring it is possible to implement engagement teeth on associated parts with a relatively acute angle, resulting in that lesser engagement force is required after the synchronizing phase, thus enabling the gearbox to have easy gear-changing.

REFERENCES:
patent: 2515010 (1950-07-01), Kishline
patent: 3272291 (1966-09-01), Flinn
patent: 4445602 (1984-05-01), Chana

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