A method for manufacturing an operation device for shutters includes a step of forming a ladder a step of forming a receiving element, a cord accommodated in the receiving element, and a step of connecting multiple connecting elements to the ladder and the receiving element. The operation device for shutters includes a ladder, a receiving element accommodating a cord therein, and the connecting elements connected to the ladder and the receiving element.

A method for manufacturing an operation device for shutters includes a step of forming a ladder a step of forming a receiving element, a cord accommodated in the receiving element, and a step of connecting multiple connecting elements to the ladder and the receiving element. The operation device for shutters includes a ladder, a receiving element accommodating a cord therein, and the connecting elements connected to the ladder and the receiving element.

A winding device for a non-stay-cord venetian blind is disclosed, which comprises a fixing seat, a fixer, winding drums with one-way dampers, a rear cover and iron cores. A non-stay-cord venetian blind adopting the winding device is also disclosed, which comprises a top beam, a bottom beam, slats, cords, a winding device, a motor and a shaft. The winding device adopts a unique separate settlement for the motor, which is convenient for mounting and displacement and easy to roll up and down. During the operation, the non-stay-cord venetian blind keeps horizontal and the bottom beam does not slide down or bounce back in any positions. The winding device is able to be applied on blinds adopt strip or string shaped ladder tape or blinds with center holes, side holes or side slots on the slats. Multiple cords are able to be winded the same winding drum.

A winding device for a non-stay-cord venetian blind is disclosed, which comprises a fixing seat, a fixer, winding drums with one-way dampers, a rear cover and iron cores. A non-stay-cord venetian blind adopting the winding device is also disclosed, which comprises a top beam, a bottom beam, slats, cords, a winding device, a motor and a shaft. The winding device adopts a unique separate settlement for the motor, which is convenient for mounting and displacement and easy to roll up and down. During the operation, the non-stay-cord venetian blind keeps horizontal and the bottom beam does not slide down or bounce back in any positions. The winding device is able to be applied on blinds adopt strip or string shaped ladder tape or blinds with center holes, side holes or side slots on the slats. Multiple cords are able to be winded the same winding drum.

A curtain assembly includes a scrolling device having a first axle, a second axle and at least one third axle. A scrolling spring is a scroll-shaped unit and includes a first end and a second end. The second end of the scrolling spring is located close to the center of the roll-shaped unit. The first end is located at outside of roll-shaped unit. The recovery force of the first end of the scrolling spring is smaller than that of the second end of the scrolling spring. The first end of the scrolling spring is connected to a first wheel. The second end of the scrolling spring is connected to a second wheel. The scrolling spring is wrapped in an “S” pattern between the first and second heels. When the curtain is collected, it does not expand downward. When the curtain is expanded, it is not dragged upward.

A blind system may control (e.g., automatically control) an amount of daylight entering a window on a façade of a building to prevent direct sunlight from shining into the building, while maximizing the amount of indirect sunlight in the building. The blind system may tilt one or more slats into a view tilt position in which the slats are horizontal, a slanted tilt position in which the slats may block direct sunlight from shining into the building, and a privacy tilt position in which the slats are vertical. The drive unit may tilt the slats according to a timeclock having the event times determined from a predicted position of the sun, such that the slats are tilted to the slanted tilt position when the predicted position of the sun indicates that direct sunlight is incident on the façade. A facing direction of the façade may be configured using a mobile device.

A blind system may control (e.g., automatically control) an amount of daylight entering a window on a façade of a building to prevent direct sunlight from shining into the building, while maximizing the amount of indirect sunlight in the building. The blind system may tilt one or more slats into a view tilt position in which the slats are horizontal, a slanted tilt position in which the slats may block direct sunlight from shining into the building, and a privacy tilt position in which the slats are vertical. The drive unit may tilt the slats according to a timeclock having the event times determined from a predicted position of the sun, such that the slats are tilted to the slanted tilt position when the predicted position of the sun indicates that direct sunlight is incident on the façade. A facing direction of the façade may be configured using a mobile device.

A transom blind accessory for a window pocket for receiving one or more blind includes a covering member between upper and lower blinds.

A transom blind accessory for a window pocket for receiving one or more blind includes a covering member between upper and lower blinds.

A Venetian blind to be fitted to an architectural frame, including a first rail; a second rail; and a transfer mechanism, wherein: the first rail includes a tilt controller configured to control tilting of the blind, the second rail includes a control actuator, and the transfer mechanism mechanically couples the control actuator and the tilt controller to transfer movement of the control actuator to the tilt controller.