A window blind includes a fixed rail and a plurality of slats hang below the fixed rail through a ladder tape. The slats are controlled by an output adjustment mechanism to change between a first state and a second state. In addition, an output clutch mechanism is provided to collect or to expand the window blind. Said output adjustment mechanism and said output clutch mechanism are both controlled by an input mechanism. Whereby, it requires only one single control module to adjust shielding of the slat assembly composed of the slats, and to expand or collect the slat assembly.

The disclosure is related to a blind without pull cord and an angle adjustment device thereof, wherein the angle adjustment device is configured to adjust angles of slats of a blind and includes at least one adjustment assembly and a shaft. The at least one adjustment assembly includes a mount base, a string pulley, a first gear and a first string. The string pulley is pivotably disposed on the mount base. The first gear is fixed on the string pulley. The first string is installed on the string pulley and is configured to connect the slats. The shaft includes a lengthy part and at least one outer tooth fixed on the lengthy part, wherein the at least one outer tooth is engaged with the first gear. An axis of the first gear is perpendicular to an axis of the shaft.

The disclosure is related to a blind without pull cord and an angle adjustment device thereof, wherein the angle adjustment device is configured to adjust angles of slats of a blind and includes at least one adjustment assembly and a shaft. The at least one adjustment assembly includes a mount base, a string pulley, a first gear and a first string. The string pulley is pivotably disposed on the mount base. The first gear is fixed on the string pulley. The first string is installed on the string pulley and is configured to connect the slats. The shaft includes a lengthy part and at least one outer tooth fixed on the lengthy part, wherein the at least one outer tooth is engaged with the first gear. An axis of the first gear is perpendicular to an axis of the shaft.

A blind cord guide seat includes a connection seat fixed under a blind rail and a cord restriction seat connected under the connection seat. The cord restriction seat includes a fixing section and a latch section. An outer face of each of the fixing section and the latch section is formed with a belt guide channel. The top end of the fixing section is formed with threaded holes for connecting with the connection seat by screws. When assembled with a cord winding device, an external force is applied to the latch section to outward bias the latch section to provide an opening for placing the cord winding device through the opening into the cord restriction seat. An iron-made hook bracket and a latch body are securely disposed at the upper end of the latch section for securely latching the latch section with the connection seat.

A peak cover for lift cord and tilt ladder includes a limiter having an arcuate cover. A fixed engagement plate is disposed at an upper end of a left side of the arcuate cover. Two stop walls are disposed on two sides of a lower end of the left side of the arcuate cover. Two grooves are formed inside the stop walls. Two annular ribs of a cord winding reel are engaged in the grooves, whereby the cord winding reel is freely rotatable. A movable engagement plate is disposed at an upper end of a right side of the arcuate cover. Four raised columns are formed on an upper end of the arcuate cover. The arcuate cover of the limiter is capped on the cord winding reel. The fixed engagement plate and the movable engagement plate of the arcuate cover are engaged with the annular ribs on two sides of the cord winding reel. Accordingly, after the arcuate cover is connected with the cord winding reel, the arcuate cover blocks the space above the cord winding reel so as to prevent the cord wound on the cord winding reel from jumping out of the cord winding reel.

A top rail mounting assembly includes a power mechanism, a driving mechanism, a winding mechanism, and a positioning mechanism. The power mechanism includes multiple power boxes arranged in a housing in a predetermined direction, each power box includes a box body and an elastic assembly configured inside the box body. The driving mechanism includes a driving rod and a driving assembly interlinked together, with the driving rod passing through each power box which is interlinked with the driving rod. The winding mechanism is connected to the driving assembly and interlinked with the power boxes through the driving assembly and the driving rod. The positioning mechanism is movably installed inside the housing for positioning the slats in any position. The top rail mounting assembly can ensure smooth operation during folding and unfolding of the blind.

An apparatus for controlling tilting and lifting operation of a window blind is provided. The apparatus includes a tilting control shaft and a lifting control shaft. A ladder belt is fastened to the tilting control shaft and interconnects the slats of the window blind, such that rotating the tilting control shaft tilts the slats. Multiple lifting cords are fastened to the lifting control shaft and connected to the blind bottom of the window blind, such that rotating the lifting control shaft lifts or lowers the blind bottom and one or more slats.

A horizontal blind structure includes a blind rail, more than one slat control unit and more than one cord winding unit. The slat control unit includes a fixing seat and a control polygonal drum received in the fixing seat and a cord restriction seat. The control polygonal drum is connected with a ladder belt. The ladder belt extends along the cord restriction seat to connect with the slats so as to control the slats to rotate into a horizontal state or a vertical state for shading sunlight. The cord winding unit includes a cord winding tube passing through the cord restriction seat and a movable conic tube movably fitted on the cord winding tube. A pull cord is wound on the movable conic tube. Multiple guide wheels are disposed at lower end of the cord restriction seat for guiding the pull cord to be positioned at the center of the slats, whereby the slats can be tidily overlapped and the pull cord is prevented from tangling so as to enhance the sunshade effect.

A tilt mechanism for a blind includes a spool, two transmission shafts, two transmission sleeves and a driven shaft. The spool has an inner gear. Each transmission shaft has an assembling portion and a gear. The gears are engaged with the inner gear. The transmission sleeves are respectively engaged with the assembling portions of the transmission shafts, and each transmission sleeve has an outer surface and a worm gear located at the outer surface thereof. The driven shaft has a teeth portion, and the teeth portion is engaged with the worm gear. The transmission shafts and the transmission sleeves are simultaneously rotatable by being driven by the spool, and the driven shaft is rotatable between a start position and a stop position along an operating direction by being driven by the transmission sleeves.

A tilt mechanism for a blind includes a spool, two transmission shafts, two transmission sleeves and a driven shaft. The spool has an inner gear. Each transmission shaft has an assembling portion and a gear. The gears are engaged with the inner gear. The transmission sleeves are respectively engaged with the assembling portions of the transmission shafts, and each transmission sleeve has an outer surface and a worm gear located at the outer surface thereof. The driven shaft has a teeth portion, and the teeth portion is engaged with the worm gear. The transmission shafts and the transmission sleeves are simultaneously rotatable by being driven by the spool, and the driven shaft is rotatable between a start position and a stop position along an operating direction by being driven by the transmission sleeves.