Nissan Motor Company Limited

Fujiunivance Corporation

Masatoshi Maekawa

Hideki Sado

Sadao Namioka

Yoshiaki Tajima

A lubricating device lubricates various parts of a power transfer system for a vehicle. The lubricating device comprises a gear interconnected with an output shaft and splashes lubricating oil in an oil chamber. The splashed oil is received by a cover member and supplied to a passage for supplying the lubricating oil to a bushing for rotatably supporting an output shaft of the power transfer system. Therefore, even if the direction to which lubricating oil is splashed by the gear is changed according to an operating condition of the vehicle, the cover member securely receives the splashed oil and supplies it to the passage for the bushing.

Lubricating device for power transfer system

The rotational speed of a motor is reduced by a worm gear and a worm wheel and the reduced rotation is transferred to a first pinion gear. A first moving plate is moved along a pair of shafts. A second moving plate is provided for the first moving plate by inserting to the same pair of shafts. A first coil spring is interposed between a retaining portion of a shaft inserting hole of the first moving plate of one of the shafts and a retaining portion of a shaft inserting hole of the second moving plate. The first coil spring is compressed by the movement of the first moving plate upon switching to the 4-wheel drive, thereby accumulating the force. A second coil spring is interposed between a retaining portion of the shaft inserting hole of the first moving plate of the other shaft and a retaining portion of the shaft inserting hole of the second moving plate. The second coil spring is compressed by the movement of the first moving plate upon switching to the 2-wheel drive, thereby accumulating the force. When the switching enable state of a coupling sleeve from the 4-wheel drive to the 2-wheel drive is satisfied, a second pinion gear is rotated by a rack gear of the plate by the movement of the second moving plate due to the force accumulated in the spring. A shift rod is shifted through a planetary gear mechanism by the engagement with the rack gear of the third pinion gear.

Growing community of inventors

Kosai, Japan

Masatoshi Maekawa