A retractable curved door assembly includes a spring-loaded roller assembly having a reel structure configured to rotate about an axis of rotation thereof, a rail extending away from the spring-loaded roller assembly in a direction perpendicular to the axis of rotation of the reel structure with at least a portion of the rail curving about an axis arranged parallel to the axis of rotation of the reel structure, a door end structure slidably engaging the rail, a flexible screen coupled to the reel structure and to the door end structure, and a tension element coupled to the reel structure and the door end structure. A greater tensile force is applied to the tension element than to the flexible screen when the door end structure is slid along the rail in a direction away from the spring-loaded roller assembly to prevent buckling of the flexible screen.

The Invention relates to the field of roller shutter, discloses the automatic landing or rising type roller shutter, the main point of its technical solution is to include the shell, the shell is set with a disc, the side of the shell is set with an extension tube, the side of the disc is set with an extension body, at least part of the extension body extends into the extension tube, through the user pulling the rope body, drive the roller shutter rise or fall, in each with any start-stop structure or can advance to apply the force of the spring roller shutter. The rope body is provided with a pull rod in the part of the rope body that extends out of the shell, and the rope body is pulled by the pull rod to facilitate the user's grip and prevent the rope body from knotting and other situations.

A spring roller blind which can be started and stopped at will, including a transverse rod and a chuck, wherein the transverse rod is fixedly connected to the chuck, a first torsion spring is arranged on the transverse rod, and one end of the first torsion spring is fixedly connected to one end of the transverse rod away from the chuck. When pulled downwards, the roller blind can be stopped at any position by the friction between embracing springs and a pipe plug; and when a pull ring is pulled, the roller blind can be retracted automatically under the action of the restoring force of the first torsion spring.

A spring roller blind which can be started and stopped at will, including a transverse rod and a chuck, wherein the transverse rod is fixedly connected to the chuck, a first torsion spring is arranged on the transverse rod, and one end of the first torsion spring is fixedly connected to one end of the transverse rod away from the chuck. When pulled downwards, the roller blind can be stopped at any position by the friction between embracing springs and a pipe plug; and when a pull ring is pulled, the roller blind can be retracted automatically under the action of the restoring force of the first torsion spring.

A kit of parts for assembling a control assembly for a roller blind includes a plurality of driven parts each having a tubular body with a different diameter and/or profile adapted to be inserted into and drivingly engage a respective roller blind tube. The kit further includes a plurality of mounting parts each having an outer face incorporating a different arrangement of securing formations adapted to be engageable with a respective mounting bracket, and a drive part including (i) a housing adapted to be coupled with any one of the mounting parts and (ii) a drive rotatingly mounted within the housing and adapted to be coupled with any one of the driven parts.

A kit of parts for assembling a control assembly for a roller blind includes a plurality of driven parts each having a tubular body with a different diameter and/or profile adapted to be inserted into and drivingly engage a respective roller blind tube. The kit further includes a plurality of mounting parts each having an outer face incorporating a different arrangement of securing formations adapted to be engageable with a respective mounting bracket, and a drive part including (i) a housing adapted to be coupled with any one of the mounting parts and (ii) a drive rotatingly mounted within the housing and adapted to be coupled with any one of the driven parts.

A rotary positioning adjustment device and a curtain with the same are provided. The rotary positioning adjustment device includes a shaft sleeve (303) and a connecting rod (1). A reel (304) is fixedly connected with an end of the connecting rod (1); a fixed seat (305) is sleeved on the connecting rod (1); the reel (304) is arranged in the fixed seat (305); and a power storage assembly is installed in the shaft sleeve (303). The power storage assembly includes a power input piece (300), a second torsion spring (301) and a power output piece (302); a first support leg (315) of the second torsion spring (301) is connected in a hooked mode with one side of an input block (314) of the power input piece (300), and a second support leg (316) of the second torsion spring (301) is connected in a hooked mode with the other side of the input block (314). The rotary positioning adjustment device further includes a first torsion spring (310). The up and down adjustment and positioning of the curtain are achieved by the second torsion spring (301) and the first torsion spring (310), and the stability is high.

A clock comprises an alarm clock housing having a front face, a clock display occupying at least a portion of the front face, a control on the housing for activating a shade positioning function, and a processor within the housing. The processor is responsive to the control for generating at least one shade positioning command to be transmitted to at least one motorized window shade, so as to cause the motorized window shade to move to one or more position at one or more corresponding predetermined interval relative to an alarm time.

A clock comprises an alarm clock housing having a front face, a clock display occupying at least a portion of the front face, a control on the housing for activating a shade positioning function, and a processor within the housing. The processor is responsive to the control for generating at least one shade positioning command to be transmitted to at least one motorized window shade, so as to cause the motorized window shade to move to one or more position at one or more corresponding predetermined interval relative to an alarm time.

A retractable door sill, including: a mounting base, the mounting base including an upper fixing base and a lower fixing base; a rotating drum, the rotating drum being arranged between the upper fixing base and the lower fixing base, a partition cloth, a torsion spring being configured to make the rotating drum rotate in one direction around its axis, the rotating drum wind up the partition cloth; and an adjusting device, the adjusting device comprising an adjusting rod and an adjusting mechanism, one end of the torsion spring being connected to the rotating drum, the other end of the torsion spring being connected to the adjusting rod of the adjusting device, the adjusting mechanism being configured to enable the adjusting rod to rotate unidirectionally around its own axis, and the adjusting rod being configured to change a torsional deformation of the torsion spring through its own rotation.