| 主权项 |
1. A power transmission switching device, comprising:
a drive source; a first driven mechanism; a second driven mechanism; and a transmission mechanism configured to transmit driving power transmitted from the drive source, selectively to one of the first driven mechanism and the second driven mechanism, the transmission mechanism comprising:
an input gear rotatable by the driving power transmitted from the drive source;a first gear configured to transmit the driving power to the first driven mechanism;a second gear configured to transmit the driving power to the second driven mechanism;a switching gear movable, in a direction parallel with an axial direction of the input gear, and a position of which is switched between a first position at which the switching gear is meshed with the first gear and a second position at which the switching gear is meshed with the second gear, the switching gear being meshed with the input gear when the switching gear is located at any of the first position and the second position; anda power transmitter comprising the input gear and a shaft member rotatable by the driving power transmitted from the drive source, the shaft member supporting the input gear so as to rotate with the input gear, the power transmitter being configured to transmit the driving power from the drive source to the switching gear, play being formed between the shaft member and the input gear, the play allowing the input gear and the shaft member to rotate with respect to each other in a rotational direction thereof, and a controller configured to control the drive source in a first rotational operation in which, before the position of the switching gear is switched, a first driving power causing the shaft member to rotate in a first rotational direction by a first rotational amount is transmitted from the drive source, the first rotational amount being equal to or greater than rotational amount corresponding to a length of the play in the rotational direction, wherein the controller is configured to control the drive source in a second rotational operation in which, after the first driving power is transmitted to the shaft member and before the position of the switching gear is switched, a second driving power causing the shaft member to rotate in a second rotational direction by a second rotational amount is transmitted from the drive source, the second rotational amount being less than the rotational amount corresponding to the length of the play in the rotational direction, the second rotational direction being opposite the first rotational direction. |
