Provided is a pull-in device configured in such a manner that a damper has improved durability and the stroke through which the damper operates is not reduced. A first slider (14-1) for assisting closing operation, a second slider (14-2) for assisting opening operation, and a damper base (22) are provided to an elongated base (12) so as to be respectively able to slide in the longitudinal direction of the base (12). The damper base (22) is disposed between the first slider (14-1) and the second slider (14-2). A first damper (24) is bridged between the first slider (14-1) and the damper base (22), and a second damper (25) is bridged between the second slider (14-2) and the damper base (22).