| 摘要 |
During assembly of an improved phaser (10), a rotor (20) bias spring (34) is captured by a spring retainer (32) that is fitted or formed into the cover (28), allowing the spring (34) to be installed in a pre-load position and forming a sub-assembly that is then attached to the remaining components. Grounded and active spring tangs (36,38) are captured in separate slots (40,42) in the spring retainer. A pocket (56) within the rotor (20) receives the active tang (38) of the bias spring (34). The pocket (56) has a tapered bottom ramp (56) that lifts the active tang (38) from the slot wall in the retainer and positions the active tang (38) within the pocket (56) in a retarding direction. Lifting the active tang (38) of the bias spring (34) prevents friction between the spring (34) and the retainer slot wall as would occur as the rotor (20) moves in a retarded direction. In advancing, spring rotation stops when the active tang (38) contacts the end of the retainer slot.
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