Electric projection screen roller structure

Abstract

An electric projection screen roller structure includes a rolling shaft and an inserting piece. The rolling shaft is provided with a sliding groove in one side surface, a flanged strip and a hollow are formed adjacent to the sliding groove, and a slant inserting block is provided adjacent to the hollow. A plurality of notches and flanged portions are provided adjacent to the slant inserting block. The inserting piece is provided with a flanged block on one side, a hollow s formed in the interior, a slant hook portion is provided at one side of the hollow, and a plurality of notches and flanged portions are provided adjacent to the slant hook portion.

1 . An electric projection screen roller structure comprising: 
 a rolling shaft being provided with a sliding groove in one predetermined side surface, a flanged strip and a hollow being formed adjacent to said sliding groove, a slant inserting block being provided adjacent to said hollow of said rolling shaft, notches and flanged portions being provided adjacent to said slant inserting block; and,    an inserting piece being provided with a flanged block on one end, a hollow being formed in the interior of said inserting piece, a slant hook portion being provided at one side of said hollow of said inserting piece, flanged portions and notches are provided adjacent to said slant ook portion.