Window regulator

A window regulator comprising a vertically extending support member having respectively on upper and lower ends thereof turn up guide members, a drive cable extending between the two turn up guide members and being connected to a movable driven member, and a drive mechanism for moving the drive, at least one of the turn up guide members being movably supported on the support member such that the distance between turn up guide members can be changed, said at least one turn up guide member comprising a cable guide having a generally semi-circular form with an arcuate groove formed in an outer periphery thereof to slidably receive said drive cable, said cable guide further comprising a pair of projecting pieces formed along one side surface thereof and projecting toward an opposed side surface thereof, and said cable guide having an elongated guide opening extending vertically therethrough and a bore formed therein extending parallel to said guide opening, said outer periphery outside said groove being stepped, a guide pin fixed to said support member and slidably received in said guide opening, and a bias mechanism being provided to bias the one guide member in the direction separating from the other of the turn up guide members, said bias mechanism comprising a compression spring having one end portion thereof received in said bore.