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 horizontal blind system includes a plurality of elongate members and a plurality of support rungs. Each support rung extends along an end region of a respective one of the plurality of elongate members. A pair of outer sleeves extend between adjacent ones of the plurality of support rungs, with each outer sleeve defining an inner opening extending along a length thereof. A pair of lift cables extend through a respective inner openings of the pair of outer sleeves such that a majority of each lift cable is concealed by a respective outer sleeve. The pair of lift cables are moveable relative to the pair of outer sleeves between a stowed configuration and a deployed configuration, with a distance between at least one adjacent pair of the plurality of support rungs decreasing as the pair of lift cables transition from the deployed configuration toward the stowed configuration.

A horizontal blind system includes a plurality of elongate members and a plurality of support rungs. Each support rung extends along an end region of a respective one of the plurality of elongate members. A pair of outer sleeves extend between adjacent ones of the plurality of support rungs, with each outer sleeve defining an inner opening extending along a length thereof. A pair of lift cables extend through a respective inner openings of the pair of outer sleeves such that a majority of each lift cable is concealed by a respective outer sleeve. The pair of lift cables are moveable relative to the pair of outer sleeves between a stowed configuration and a deployed configuration, with a distance between at least one adjacent pair of the plurality of support rungs decreasing as the pair of lift cables transition from the deployed configuration toward the stowed configuration.

A control structure for a window covering includes a base, a revolving wheel having an axial post, a restriction means including a bushing fitting around the axial post, a transmission member provided on a side of the bushing, and at least one pawl connected to the axial post. The revolving wheel is connected to the base. The restriction means has at least one cutting groove. The transmission member has at least one abutting portion on an inner wall thereof. The pawl is pivotable within a width of the cutting groove. When the revolving wheel is rotated forward, an end of the pawl passes through the cutting groove to mesh with the abutting portion. When the revolving wheel is rotated backward, the pawl disengages from the abutting portion, and the transmission member is rotatable relative to the revolving wheel. Whereby, it could prevent generating noise while operating the window covering.

A control structure for a window covering includes a base, a revolving wheel having an axial post, a restriction means including a bushing fitting around the axial post, a transmission member provided on a side of the bushing, and at least one pawl connected to the axial post. The revolving wheel is connected to the base. The restriction means has at least one cutting groove. The transmission member has at least one abutting portion on an inner wall thereof. The pawl is pivotable within a width of the cutting groove. When the revolving wheel is rotated forward, an end of the pawl passes through the cutting groove to mesh with the abutting portion. When the revolving wheel is rotated backward, the pawl disengages from the abutting portion, and the transmission member is rotatable relative to the revolving wheel. Whereby, it could prevent generating noise while operating the window covering.

A displacement controlling device comprises a shaft having a displacement region, a movable unit connected to the shaft and configured to move within the displacement region, a damper connected to one end of the shaft, and a restraint unit arranged between the movable unit and the damper, wherein the restraint unit is configured to be driven by the movable unit from a first position toward a second position; the damper outputs a resistance when the restraint unit is at the first position, and the damper stops outputting the resistance if the restraint unit is at the second position.

A displacement controlling device comprises a shaft having a displacement region, a movable unit connected to the shaft and configured to move within the displacement region, a damper connected to one end of the shaft, and a restraint unit arranged between the movable unit and the damper, wherein the restraint unit is configured to be driven by the movable unit from a first position toward a second position; the damper outputs a resistance when the restraint unit is at the first position, and the damper stops outputting the resistance if the restraint unit is at the second position.

A window blind includes an input mechanism adapted to change a location of a bottom rail, an adjustment output mechanism adapted to be motivated when the bottom rail is located at a low position, whereby to tilt slats between two positions, and an output clutch mechanism, which is adapted to be driven by the input mechanism to move the bottom rail toward a high position, and is adapted to be driven by the input mechanism to move the bottom rail toward the low position when it is at the high position. A stroke delay mechanism is provided on a transmission path from the adjustment output mechanism to the output clutch mechanism, which is adapted to delay an affected time for transmission. Whereby, only one single control module is required to adjust the inclination angle of the slats and to collect and expand the covering material.

A window blind includes an input mechanism adapted to change a location of a bottom rail, an adjustment output mechanism adapted to be motivated when the bottom rail is located at a low position, whereby to tilt slats between two positions, and an output clutch mechanism, which is adapted to be driven by the input mechanism to move the bottom rail toward a high position, and is adapted to be driven by the input mechanism to move the bottom rail toward the low position when it is at the high position. A stroke delay mechanism is provided on a transmission path from the adjustment output mechanism to the output clutch mechanism, which is adapted to delay an affected time for transmission. Whereby, only one single control module is required to adjust the inclination angle of the slats and to collect and expand the covering material.

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.