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 invention is a motorized gearbox assembly. The motorized gearbox assembly includes a motor that drives an output shaft. The output shaft actuates a window covering by applying torque to a tilt rod of the window covering. The output shaft extends substantially an entire length of the motorized gearbox assembly. It also has a through-channel that extends substantially an entire length of the output shaft, so that the tilt rod can pass entirely through the motorized gearbox assembly. Because of this, the motorized gearbox assembly can be used for retrofitting blinds. In some embodiments, the motorized gearbox assembly has a diametrically polarized magnet driven by the output shaft, and a position encoder that measures the output shaft's position and number of rotations.

The invention is a motorized gearbox assembly. The motorized gearbox assembly includes a motor that drives an output shaft. The output shaft actuates a window covering by applying torque to a tilt rod of the window covering. The output shaft extends substantially an entire length of the motorized gearbox assembly. It also has a through-channel that extends substantially an entire length of the output shaft, so that the tilt rod can pass entirely through the motorized gearbox assembly. Because of this, the motorized gearbox assembly can be used for retrofitting blinds. In some embodiments, the motorized gearbox assembly has a diametrically polarized magnet driven by the output shaft, and a position encoder that measures the output shaft's position and number of rotations.

A motorized window covering switching mechanism is described herein. The switching mechanism includes a deflectable arm and a pull cord. The deflectable arm is connected to a first contact, and the pull cord is connected to the deflectable arm such that, as the pull cord is tugged, the deflectable arm deflects to move the first contact toward a second contact, thereby converting gestures of the pull cord into electrical signals that control a motorized window covering. In some embodiments, cord gestures that deflect the deflectable arm include pull sequences, numbers of pulls, strength of pulls, or combinations thereof. Additionally, in some embodiments, a controller receives the cord gestures and translates the cord gestures into operational commands to control and operate a window covering gearbox assembly.

A motorized window covering switching mechanism is described herein. The switching mechanism includes a deflectable arm and a pull cord. The deflectable arm is connected to a first contact, and the pull cord is connected to the deflectable arm such that, as the pull cord is tugged, the deflectable arm deflects to move the first contact toward a second contact, thereby converting gestures of the pull cord into electrical signals that control a motorized window covering. In some embodiments, cord gestures that deflect the deflectable arm include pull sequences, numbers of pulls, strength of pulls, or combinations thereof. Additionally, in some embodiments, a controller receives the cord gestures and translates the cord gestures into operational commands to control and operate a window covering gearbox assembly.

A window covering includes a first rail and a plurality tiltable slats. The slats can be connected to a slat tilt control mechanism positioned within the first rail. The slat tilt control mechanism can be configured to tilt the slats to a tilted position (e.g. a closed position, or orientation) during the lifting or lowering of the window covering. The slat tilt control mechanism can also be configured to tilt the slats from a tilted position to an open position, or horizontal orientation, during the lifting or lowering of the window covering material.

A reeling device for automated venetians is disclosed, including an upper track, a transmission tube, an electric motor, a plurality of reel rotors, a plurality of fixing bases, a plurality of lift cords and ladder tapes. The reel rotors are intervally disposed on the transmission tube, a cord area and a ladder tape area are respectively formed on the surfaces of the plurality of reel rotors, and the cord area and the ladder tape are disposed on the reel rotors in parallel. The fixing bases are disposed at a position that is at the bottom of the upper track and corresponding to the reel rotors, and the fixing bases are disposed below the plurality of reel rotors and have a bottom plate on which a lateral plate is disposed. The cord guiding hole and the lateral plate guide the lift cords to wind at the cord area.

An electromechanical actuator includes a housing, an electronic control unit and a switching device. The switching device includes a first member which is attached to a wall of the housing by removable attachment elements and arranged opposite an opening of the wall, and a second member which is movable relative to the first member. The electronic control unit includes a switch and a printed circuit board. The switch is actuated by the second member through the opening provided in the wall and is assembled on the printed circuit board. The printed circuit board includes an electrical connection device arranged opposite the opening of the wall. Moreover, the electrical connection device is accessible through the opening, after the first and second members are withdrawn from the wall, by removing the removable attachment elements.

An electromechanical actuator includes a housing, an electronic control unit and a switching device. The switching device includes a first member which is attached to a wall of the housing by removable attachment elements and arranged opposite an opening of the wall, and a second member which is movable relative to the first member. The electronic control unit includes a switch and a printed circuit board. The switch is actuated by the second member through the opening provided in the wall and is assembled on the printed circuit board. The printed circuit board includes an electrical connection device arranged opposite the opening of the wall. Moreover, the electrical connection device is accessible through the opening, after the first and second members are withdrawn from the wall, by removing the removable attachment elements.

In one aspect, a cordless covering may include a roller and a shade panel configured to be wound around and unwound from the roller to move the shade panel between an extended position and a retracted position. The shade panel may include a front panel, a back panel, and a plurality of vanes extending between the front and back panels. The covering may also include a roller shaft extending through the roller and a tilt adjustment mechanism coupled to the roller shaft. The tilt adjustment mechanism may be configured to rotate the roller shaft to adjust a tilt angle of the vanes between an opened position and a closed position.