The invention relates to a device (1) for manually operating a motorized drive of a screen, such as a window covering. A housing (2) to be attached to the screen comprises first operating means (3) and second operating means (20) for manual operation of the device.

Switching means (10) convert pulling movements on the first operating means into first electrical signals for the motorized drive.

Control means (4) are configured to save a setting value associated with a current position of the screen in memory means after receiving second electrical signals from the second operating means (20).

The invention likewise relates to a method for saving setting values associated with different positions of a screen, such as a window covering, which screen is provided with a motorized drive and a device according to the invention, comprising the step of saving a current position by manual operation of the first or second operating means.

The invention relates to a device (1) for manually operating a motorized drive of a screen, such as a window covering. A housing (2) to be attached to the screen comprises first operating means (3) and second operating means (20) for manual operation of the device.

Switching means (10) convert pulling movements on the first operating means into first electrical signals for the motorized drive.

Control means (4) are configured to save a setting value associated with a current position of the screen in memory means after receiving second electrical signals from the second operating means (20).

The invention likewise relates to a method for saving setting values associated with different positions of a screen, such as a window covering, which screen is provided with a motorized drive and a device according to the invention, comprising the step of saving a current position by manual operation of the first or second operating means.

Methods and apparatus to control architectural opening covering assemblies are disclosed herein. An example architectural opening covering assembly includes a manual controller operatively coupled to a tube to rotate the tube. The tube includes an architectural opening covering. The example architectural opening covering assembly also includes a motor operatively coupled to the tube to rotate the tube. A local controller is communicatively coupled to the motor to control the motor. The example architectural opening covering assembly further includes a gravitational sensor to determine an angular position of the tube.

Methods and apparatus to control architectural opening covering assemblies are disclosed herein. An example architectural opening covering assembly includes a manual controller operatively coupled to a tube to rotate the tube. The tube includes an architectural opening covering. The example architectural opening covering assembly also includes a motor operatively coupled to the tube to rotate the tube. A local controller is communicatively coupled to the motor to control the motor. The example architectural opening covering assembly further includes a gravitational sensor to determine an angular position of the tube.

A control module of a window shade includes a drive axle affixed with a sleeve, an arrester assembled around the sleeve, a cord drum connected with an operating cord, a clutch operable to couple and decouple the cord drum with respect to the drive axle, and a release unit including a stick that is operatively connected with the arrester. The arrester blocks rotation of the drive axle in a locking state, and has an unlocking state allowing rotation of the drive axle. The operating cord is pulled to drive the cord drum in rotation and turn the clutch to a coupling state, such that the rotation of the cord drum is transmitted through the clutch to drive the drive axle in rotation for raising the shading structure. Moreover, the stick is operable to switch the arrester from to the unlocking state for lowering the shading structure by gravity action.

A control module of a window shade includes a drive axle affixed with a sleeve, an arrester assembled around the sleeve, a cord drum connected with an operating cord, a clutch operable to couple and decouple the cord drum with respect to the drive axle, and a release unit including a stick that is operatively connected with the arrester. The arrester blocks rotation of the drive axle in a locking state, and has an unlocking state allowing rotation of the drive axle. The operating cord is pulled to drive the cord drum in rotation and turn the clutch to a coupling state, such that the rotation of the cord drum is transmitted through the clutch to drive the drive axle in rotation for raising the shading structure. Moreover, the stick is operable to switch the arrester from to the unlocking state for lowering the shading structure by gravity action.

A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serveto limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.

A manual drive assembly for a manually-operated window treatment based on a drive chain formed as a loop, may incorporate one or more intermediate tensioners disposed between two ends of the loop. The loop may be formed between a manual clutch mechanism coupled to the window treatment and an end tensioner. The one or more intermediate tensioners may serveto limit slack in the loop such that sides of the loop cannot be pulled to create a large loop, for example, having a gap of four inches or greater, between the hanging sides of the cord.

A blind lifting control module includes a transmitting wheel, an anti-backward unit and a driving unit disposed to a supporting unit. The transmitting wheel for connecting a blind reeled horizontal axle has ratchet portions respectively meshable with corresponding ratchet portions of an anti-backward wheel and a driving reel. A pull cord is reeled on the driving reel and has a free end passing through a thrust member and a hindering member, and is pulled to release the anti-backward wheel to permit lowering of a blind. The thrust member is turned by pulling of the pull cord to thrust the driving reel to mesh with the transmitting wheel for lifting the blind.

A blind lifting control module includes a transmitting wheel, an anti-backward unit and a driving unit disposed to a supporting unit. The transmitting wheel for connecting a blind reeled horizontal axle has ratchet portions respectively meshable with corresponding ratchet portions of an anti-backward wheel and a driving reel. A pull cord is reeled on the driving reel and has a free end passing through a thrust member and a hindering member, and is pulled to release the anti-backward wheel to permit lowering of a blind. The thrust member is turned by pulling of the pull cord to thrust the driving reel to mesh with the transmitting wheel for lifting the blind.