To improve an adhesive property in installing a movable window in a lifting mechanism by using a window lifting bracket.

This window lifting bracket 20 is provided with a base 28 capable of being installed in a window lifting mechanism and separately positioned side walls 30 capable of being positioned on either side surface of a movable window 26 by extending from this base 28. Engagement between a flexible beam member 40 and the window 26 desirably imparts a reduced stress area to a bottom part of a channel 32. Opposed surfaces 46 of the separately positioned side walls 30 impart a complicated surface such as a projecting part 50 and a recessed part 52 for effectively increasing the surface area for adhering an adhesive 36 to thereby improve an adhesive property of the adhesive 36 to the window bracket 20 and the window 26.