A ladder rope retaining device includes a support base and a rotating base. The support base has a bottom wall and two opposite straight walls connected with the bottom wall. The bottom wall has two opposite elastic support portions protruding out of the bottom surface thereof. The straight walls each have a pivot trough. A positioning bump is formed at the periphery wall of one pivot trough. The rotating base includes a pivot pivotally disposed in the pivot troughs, and a ladder rope retaining portion formed on the pivot. The pivot has a plurality of positioning recesses arranged in an equally-spaced manner. When the rotating base is rotated relative to the support base, the positioning recesses are alternately engaged with and disengaged from the positioning bump to generate a better operating feel. As they are disengaged from each other, the support base becomes deformed elastically.

A ladder rope retaining device includes a support base and a rotating base. The support base has a bottom wall and two opposite straight walls connected with the bottom wall. The bottom wall has two opposite elastic support portions protruding out of the bottom surface thereof. The straight walls each have a pivot trough. A positioning bump is formed at the periphery wall of one pivot trough. The rotating base includes a pivot pivotally disposed in the pivot troughs, and a ladder rope retaining portion formed on the pivot. The pivot has a plurality of positioning recesses arranged in an equally-spaced manner. When the rotating base is rotated relative to the support base, the positioning recesses are alternately engaged with and disengaged from the positioning bump to generate a better operating feel. As they are disengaged from each other, the support base becomes deformed elastically.

A ladder rope retaining device includes a support base, a rotating base, and an elastic positioning member. The support base has a bottom wall and two opposite straight walls connected with the bottom wall and each having a pivot trough. The rotating base includes a pivot pivotally disposed in the pivot troughs, and a ladder rope retaining portion formed on the pivot. The pivot has a plurality of positioning recesses arranged in an equally-spaced manner. The elastic positioning member is disposed to one of the straight walls of the support base and elastically engaged with one of the positioning recesses of the pivot. Thus, when the rotating base is rotated relative to the support base, the positioning recesses are alternately engaged with and disengaged from the elastic positioning member to generate a better operating feel.

A ladder rope retaining device includes a support base, a rotating base, and an elastic positioning member. The support base has a bottom wall and two opposite straight walls connected with the bottom wall and each having a pivot trough. The rotating base includes a pivot pivotally disposed in the pivot troughs, and a ladder rope retaining portion formed on the pivot. The pivot has a plurality of positioning recesses arranged in an equally-spaced manner. The elastic positioning member is disposed to one of the straight walls of the support base and elastically engaged with one of the positioning recesses of the pivot. Thus, when the rotating base is rotated relative to the support base, the positioning recesses are alternately engaged with and disengaged from the elastic positioning member to generate a better operating feel.

A ladder tape device for a venetian blind includes a U-shaped fixing base fixed in a head rail of the venetian blind, a ladder tape retainer with opposite ends placed on corresponding two side-panels of the fixing base, a plurality of ladder tapes with a top end of each ladder tape passing through the fixing base and being wound on the ladder tape retainer, and a limiting cover buckled on the top end of the fixing base, an inner wall of the limiting cover and an outer wall of the top end of the ladder tape retainer are separated by a predetermined distance to form a ladder tape limiting space.

The disclosure discloses an intelligent controller for automatically adjusting slat angles of a window shutter, comprising a controller box and a window shutter. The controller box comprises a body case, a battery, a control board, a motor and a linear bearing, the linear bearing is connected to the motor, a slide rod, which is retractable with respect to the linear bearing, is mounted on the linear bearing, and a rod slot is provided on a side face of the body case. The control board comprises a mainboard, a Hall board and a connection board which are connected in sequence, the Hall board, the connection board and the motor are electrically connected in sequence, and the mainboard is electrically connected to the battery. An interconnecting piece matched with the slide rod is provided on the window shutter, and the slide rod is retractable and slides along the rod slot to control the opening and closing of slats of the window shutter. According to the disclosure, the controller can be used with wireless remote control and mobile APPs to achieve control, which is intelligent and convenient and can greatly reduce the users' labor intensity. It adopts the lithium battery as a power supply and thus is safe and reliable. It is easy for installation and operation without any damage to the window shutter and wall structure and is suitable for self-installation by users.

A headrail-mounted motorized actuator for wand-operated venetian blinds has a bracket which attaches to the front of the headrail with a magnet. The bracket has a ferroelectric surface oriented perpendicularly to the headrail. A motor assembly has an output shaft and a second magnet which holds the motor assembly to the ferroelectric surface, so that the output shaft is parallel to the ferroelectric surface. The position and orientation of the motor assembly can be adjusted by moving and rotating the motor assembly on the ferroelectric surface.

A window blind includes a headrail, a covering assembly including a plurality of slats and a bottom rail, a lifting mechanism including a driving module and a lift cord assembly operably connected to the driving module, a tilt mechanism adapted to drive the slats to rotate, and an auxiliary unit provided between the tilt mechanism and the lifting mechanism. The lift cord assembly is connected to the bottom rail for expanding or folding the covering assembly. The covering assembly is in a first state when each and every one of the slats is substantially parallel to each other and correspondingly rotatable by the tilt mechanism, and is in a second state otherwise. When the covering assembly is in the second state, the auxiliary unit is drivable by the tilt mechanism to make the lifting mechanism further release the lift cord assembly, changing the covering assembly into the first state again.

A window blind includes a headrail, a covering assembly including a plurality of slats and a bottom rail, a lifting mechanism including a driving module and a lift cord assembly operably connected to the driving module, a tilt mechanism adapted to drive the slats to rotate, and an auxiliary unit provided between the tilt mechanism and the lifting mechanism. The lift cord assembly is connected to the bottom rail for expanding or folding the covering assembly. The covering assembly is in a first state when each and every one of the slats is substantially parallel to each other and correspondingly rotatable by the tilt mechanism, and is in a second state otherwise. When the covering assembly is in the second state, the auxiliary unit is drivable by the tilt mechanism to make the lifting mechanism further release the lift cord assembly, changing the covering assembly into the first state again.

An apparatus for adjusting a tilt angle of a plurality of slats in a window blind. The window blind includes a headrail having disposed therein a shaft that rotates responsive to rotation of an externally accessible angle adjustment wand. The apparatus includes a pulley coupled with the shaft and the slats. The pulley causes adjustment of the tilt angle of the slats in response to rotation of the shaft, provides a first torque at a first position corresponding to an open position of the slats and a second torque at a second position corresponding to an approximately closed position of the slats, where the second torque is greater than the first torque.