Vehicle window opening/closing device

A vehicle window opening/closing device for opening and closing a window glass, said device comprising:

• a pinion gear for reciprocating the opening/closing device by forward and backward drive of an output shaft;
• a sector gear having a first journaling point for being rotatably supported by a body and said sector gear being swung about said first journaling point by rotation of said pinion gear;
• a lift arm having an extreme end with coupling means for being coupled with the window glass and a base end with support means for being rotatably supported by the body;
• a coupling link having an end with a second journaling point at which said coupling link is rotatably supported by said sector gear and an opposite end of said coupling link having a third journaling point at which said coupling link is rotatably supported by said lift arm;
• means for setting a fully-closed-position of the window glass to a position where said second journaling point crosses a fulcrum position that is established as a straight line between said first journaling point and said third journaling point with said second journaling point approaching said fulcrum position from one side of said straight line as the fully closed position is approached by movements of said coupling link and said lift arm caused by a swing motion of said sector gear, and said second journaling point crossing said straight line to a beyond-fulcrum-position at the opposite side of said straight line when reaching the fully-closed-position;
• and
• regulating means for regulating movement of at least one of said sector gear and said coupling link in order to regulate movement of said second journaling point in a direction further beyond said beyond-fulcrum-position.