Shift-assisting device for a transmission

A shift-assisting device for a transmission having a change-lever, said shift-assisting device comprising a speed-change operation mechanism;

• an electric motor for operating said speed-change operation mechanism in the same direction as the direction in which the change lever is shifted, said speed-change operation mechanism being adapted to be coupled to the change lever and adapted to actuate a synchronizing mechanism of the transmission;
• a shift stroke sensor for detecting the shift stroke position of said speed-change operation mechanism, and a controller for outputting to said electric motor a signal of a driving force corresponding to the shift stroke position detected by said shift stroke sensor;
• wherein said controller comprises a gear position judging means for judging a target gear position of the transmission, and a difference-in-the synchronized-rotational-speed detector means for detecting a difference in the synchronized rotational speed of the target gear position judged by said gear position judging means;
• and
• said controller is responsive to the difference in the synchronized rotational speed detected by said difference-in-the-synchronized-rotational-speed detector means being smaller than a predetermined rotational speed, to output said electric motor a signal of a driving force smaller than the driving force that corresponds to the shift stroke position.