Variable speed pulley and gear mechanism

Details Variable speed pulley and gear mechanism Variable speed pulley and gear mechanism

1992-04-20

1993-09-07

Bui, Thuy M.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Speed responsive

F16H 5552

Patent

active

052423301

ABSTRACT:
A belt type nonstep variable speed pulley and gear mechanism conveys an engine rotational driving force towards an auxiliary machinery in a vehicle while changing engine speeds. It includes an axle, a fixed flange unitarily rotatable and fixedly mounted in an axial direction which extends along the axle, a movable flange unitarily rotatable with the axle and movable in the axial direction. The movable flange has one side face arranged against the fixed flange. The variable speed pulley device also has a belt provided between the fixed flange and the movable flange, a cam member having a predetermined cam face which is pressed by thrust force in the axle direction for moving the movable flange, a fixed member arranged against an other side face of the movable flange and unitarily rotatable with the axle, and a flyweight arranged between the fixed member and the movable flange so as to contact with and press the cam face by centrifugal force. The cam face has a face angle which is formed between the cam face and the axle so as to become gradually larger in a direction in which the centrifugal force works. The changing angle of the cam face satisfies properties of the auxiliary machinery which comprise high speed changing points and/or fixably maintained rotational frequencies.

REFERENCES:
patent: 3975964 (1976-08-01), Adams
patent: 4028953 (1977-06-01), Lavallee
patent: 4102214 (1978-07-01), Hoff
patent: 4345664 (1982-08-01), Anno et al.
patent: 4384862 (1983-05-01), Nakane
patent: 4515575 (1985-05-01), Kinbara et al.

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