In the variation of the third embodiment, the second coupling section 127 is in the form of a hook, and the first coupling section 116 is in the form of a hook adapted to be engaged with the hook-shaped second coupling section 127. However, it is understood the first coupling section 116 is not necessarily limited to the above-described configuration. For example, the first coupling section 116 can be otherwise a hole, a protruded body, a recessed body or a fastening body.

Therefore, in this case, the user may operate the handle member 120 at the operating section 123 to turn the handle member 120 about the rotation shaft portion 126 until the handle member 120 is perpendicular or nonparallel to the first partitioning wall 210. Then, pull the operating section 123 to translate the same. At this point, the handle member 120 brings the pulling member 110 to move along with it, causing the abutting section 112 of the pulling member 110 to push the corresponding apparatus 300 forward, such that the corresponding apparatus 300 can be conveniently removed from the object.

Please refer to FIG. 22, in which a chassis-wall module with pull-out aiding function 200 according to a fourth embodiment of the present invention is shown, and to FIG. 23, in which a variation of the fourth embodiment is shown.