Abstract: In a window regulator, a positioner is provided between a pair of slider bases and a pair of windowpane holders and define a relative position therebetween in a forward/rearward direction of a vehicle; a vehicle-widthwise-directional wall is provided on each guide rail; and a pair of forward/rearward directional guide walls is provided on each slider base to hold an associated vehicle-widthwise-directional wall in the forward/rearward direction and to guide an associated slider base along an associated guide rail. A clearance in the forward/rearward direction between the vehicle-widthwise-directional wall of one guide rail and the forward/rearward-directional guide walls of one slider base is set smaller than that between the vehicle-widthwise-directional wall of the other guide rail and the forward/rearward-directional guide walls of the other slider base.

Abstract: A window regulator prevents a compressing force from acting on a plastic panel to achieve a reduction, in thickness (miniaturization) of the plastic panel. Between the casing 32 of each of the pair of pulley assemblies 30b and 30c and the associated fit-in recessed portion 20b or 20c, a movement limit portion which limits movement of the casing 32 relative to the plastic panel 10 toward the far side of the associated fit-in recessed portion 20b or 20c from the motor assembly 17 is formed only on the far side of the associated fit-in recessed portion 20b or 20c from the motor assembly 17, which corresponds to the wire winding area of the pulley body (guide member body) 31, out of the near side and the far side of the associated fit-in recessed portion 20b or 20c with respect to the motor assembly 17.

Abstract: A window regulator is obtained which can securely prevent a pulley body(s) from coming off a plastic panel when being delivered (when being carried), before the window regulator is installed onto a vehicle door. A fit-in recessed portion 20a, into which a pulley assembly 30a is fitted, is formed on a plastic panel 10. Retaining projections 22 and 23 that extend from the peripheral edge of the fit-in recessed portion 20a toward a central part thereof and overlap the pulley body 31 of the pulley assembly 30a, which is fitted into the fit-in recessed portion 20a, in a plan view to prevent the pulley body 31 from coming out of the fit-in recessed portion 20a are formed on the plastic panel 10.

Abstract: In a window regulator, a positioner is provided between a pair of slider bases and a pair of windowpane holders and define a relative position therebetween in a forward/rearward direction of a vehicle; a vehicle-widthwise-directional wall is provided on each guide rail; and a pair of forward/rearward directional guide walls is provided on each slider base to hold an associated vehicle-widthwise-directional wall in the forward/rearward direction and to guide an associated slider base along an associated guide rail. A clearance in the forward/rearward direction between the vehicle-widthwise-directional wall of one guide rail and the forward/rearward-directional guide walls of one slider base is set smaller than that between the vehicle-widthwise-directional wall of the other guide rail and the forward/rearward-directional guide walls of the other slider base.