Shift-assisting device for a transmission

A shift-assisting device for a transmission comprising an electric motor for operating a speed-change operation mechanism in the same direction as the direction in which a change lever is shifted, said speed-change operation mechanism being coupled to said change lever and actuating 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 in response to a detection signal from said shift stroke sensor;

• wherein
• said controller comprises a gear position judging means for judging a target gear position of the transmission, that is to be shifted by the change lever, 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
• when the difference in the synchronized rotational speed detected by said difference-in-the-synchronized-rotational-speed detector means is smaller than a predetermined rotational speed, said controller outputs, to said electric motor, a signal of a driving force smaller than the driving force that corresponds to the shift stroke position.