Patent ID: 7995274

Claim:
An electric projector screen comprising: a fixed seat; a winding tube for winding a screen fabric mounted in the fixed seat; a linkage member sleeved and fixed in the winding tube; a locator connected to and fixed on one end of the winding tube; an interlock pipe connected and assembled between the linkage member and the locator; a serrated teeth part that is formed on an inner surface of the interlock pipe; a connection part mounted in the interlock pipe and having a serrated teeth part on an outer surface thereof and the serrated teeth part is corresponding to and assembled with the serrated teeth part of the interlock pipe; a motor mounted in the interlock pipe; an output end of the motor connected to and fixed on the connection part while the other end of the motor extending the locator and arranged with a fastening plate; a cover set on one end of the fixed seat that is corresponding to the motor; an insertion hole mounted on a middle part of the cover and corresponding to the motor so as to fix the fastening plate of the motor outside the cover; a plurality of limit holes disposed on the cover, corresponding to the locator; the locator is located by stoppers passing through the limit holes and pressing against the locator firmly.