▎ 摘　　要

NOVELTY - The utility model claims a lifting fixing device for projection screen, comprising a fixing seat, the front end of the fixing seat surface is provided with a mounting groove, the lower end of the wall of the groove groove is covered with a rubber layer, the upper and lower two ends of the mounting groove covered surface a graphene layer, a clamping plate is fixedly mounted around the wall of the groove groove, one side of the front end of the clamping plate is fixedly mounted with a silica gel strip, the left and right ends of the fixing seat are movably surface with a lifting mechanism, the middle of the inner part of the lifting mechanism is provided with a motor, the power output end of the motor is fixedly mounted with a ball screw, the middle position of the ball screw is movably mounted with a sliding, seat side of the sliding seat is fixedly connected with the fixing seat the material of the clamping plate is plastic, the number of the clamping plate is several groups. The utility model model increases the lifting mechanism of the projection screen fixing device, and can improve the using effect of the fixing device, and it has practicability.