Off axis pump with integrated chain and sprocket assembly

摘要

An off axis hydraulic pump for an automatic motor vehicle transmission includes an integrated chain and sprocket assembly. A first, chain drive sprocket is mounted on a shaft driven by an input to a torque converter and a second, driven chain sprocket is attached to a stub shaft which drives the pump. A multi-link chain encircles the sprockets and transfers drive torque from the torque converter input to the stub shaft. The first, chain drive sprocket is retained on the input shaft by a retainer cap which includes seals between both the shaft and a torque converter housing. The second, driven chain sprocket is retained on the stub shaft by a snap ring or similar component.

主权项

1. An off axis hydraulic pump for an automatic transmission comprising, in combination,
a torque converter housing having a first opening for at least one rotating torque transfer member and a second opening, a torque transfer member disposed in said first opening, a pump structure assembly including a chain drive sprocket mounted on said torque transfer member, a retaining cap disposed over said chain drive sprocket and including a first stationary seal between said cap and said torque converter housing and a second shaft seal between said cap and said rotating torque transfer member, a hydraulic pump having a drive shaft, a driven chain sprocket mounted on said drive shaft, means for retaining said driven chain sprocket on said drive shaft, and a chain engaging said chain drive sprocket and said driven chain sprocket.