Curtain and non-punching installation device for curtain upper beam

A non-punching installation device for a curtain upper beam, comprising:

• a mounting base with one end fixed to an end of the upper beam;
• an abutting base assembled on the mounting base for linear reciprocating sliding to be abutted against a wall on one side of a window;
• and
• an adjustment mechanism assembled on the mounting base, for driving the abutting base to linearly reciprocating slide relative to the end of the upper beam;
• wherein the adjustment mechanism comprises:
• a double-headed screw assembled on the mounting base and fixed relative to the mounting base in an axial direction, wherein two opposite ends of the double-headed screw are respectively provided with a first external thread and a second external thread with opposite spiral directions, and at least one end of the double-headed screw is exposed from the mounting base as an operation end;
• two nuts respectively threaded with the first external thread and the second external thread at the both ends of the double-headed screw, and movable synchronously towards or away from each other in the axial direction under the driving of the double-headed screw;
• and
• two push rods symmetrically arranged with respect to a symmetrical plane that extends through a midpoint of a distance between the two nuts and is perpendicular to the axial direction of the double-headed screw, wherein corresponding ends of the two push rods as linkage ends are connected to the two nuts for one-to-one corresponding transmission, and move synchronously under the driving of the two nuts;
• wherein opposite ends of the two push rods as driving ends are assembled on the abutting base and are relatively fixed with the abutting base in a sliding direction of the abutting base;
• wherein when the linkage ends move synchronously with the nuts, the driving ends drive the abutting base to slide accordingly.