Patent ID: 6151768
Filing Date: 2000-11-28
Classification: B23P,F16D,Y10T

Abstract:
A method of manufacturing a one-way clutch, said one-way clutch including: a plurality of sprags; a flexible ribbon spring having first sprag inserting windows in a longitudinal direction thereof, for inserting said sprags therein; an outer retainer disposed on an outer peripheral-side of said flexible ribbon spring and having second sprag inserting windows in which outer peripheral-side end portions of the sprags can be inserted; and an inner retainer dispensed on an inner peripheral-side of said flexible ribbon spring and having third sprag inserting windows in which inner peripheral-side end portions of said sprags can be inserted, said method comprising the steps of:providing a boss which is formed in a substantially column shape and in which sprag pockets which are open toward a radially outward side in such a manner as to accommodate said sprags and substantially V-shaped grooves for respectively engaging V-shaped bent portions of said ribbon spring are disposed alternately in an outer peripheral portion of the radial direction thereof;consecutively inserting said sprags into said sprag pockets of said boss;winding said ribbon spring around said outer peripheral portion of said boss while said V-shaped bent portions of said ribbon spring are respectively engaged in said V-shaped grooves of said boss;fitting said outer retainer, for which a phase of the second sprag inserting windows of said outer retainer is adjusted to a phase of said sprag pockets of said boss, to the outer peripheral side of said ribbon spring wound on said boss; andcontinuously rotating said boss at a predetermined number of revolutions so that said sprags are moved from inside said sprag pockets toward the radially outward side of said boss and are inserted and fitted into said first and second sprag inserting windows of said ribbon spring and said outer retainer, respectively, by a centrifugal force, whereby said sprags are integrally assembled with said outer retainer and said ribbon spring.