The invention discloses a bead chain driving type double-layer hollow glass built-in
louver and belongs to the technical field of sunshade hollow glass products. The
louver comprises a window body, a curtain piece turning mechanism, a venetian blind, an inner control mechanism, an outer control mechanism and a venetian blind lifting traction
rope. The window body comprises an upper window body transverse tube, a lower window body transverse tube, a left window body longitudinal tube, a right window body longitudinal tube, inner glass and outer glass. The
louver is characterized in that the inner control mechanism comprises a box body, a box cover, a synchronous belt
pulley, a synchronous belt and a lifting traction
rope driving wheel. The outer control mechanism comprises a protective cover, a friction plate, a bead chain wheel shaft, a bead chain wheel shaft hub, a bead chain and a bead chain wheel shaft base. The protective cover forms a protective cover cavity. The friction plate is arranged in the protective cover cavity. The bead chain wheel shaft hub is supported by a shaft hub cavity. The bead chain wheel shaft is arranged in the middle of the bead chain wheel shaft hub. One end of the bead chain is arranged on the bead chain wheel shaft hub in a sleeving mode. The other end of the bead chain forms a suspending end. The bead chain wheel shaft base is matched with the protective cover. One end of the venetian blind lifting traction
rope is in driving connection with a lifting traction rope driving wheel. Manufacturing cost is reduced; labor is saved during operation; service life is long, and the using effect is good; resource-saving economy is reflected.