Nissan Motor Company Limited

Fujiunivance Corporation

Yoshiaki Tajima

Sadao Namioka

Masatoshi Maekawa

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.

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Hamamatsu, Japan

Yoshiaki Tajima