A battery-powered motorized window treatment for covering at least a portion of a window may be adjusted into a service position to allow for access to at least one battery that is powering the motorized window treatment. A headrail of the motorized window treatment may be adjusted to the service position to allow for easy replacement of the batteries without unmounting the headrail and without requiring tools. The motorized window treatment may comprise brackets having buttons that may be actuated to release the headrail from a locked position, such that the head rail may be rotated into the service position. The headrail easily rotates through a controlled movement into the service position, such that a user only needs one free hand available to move the motorized window treatment into the service position and change the batteries.

A leading wire of pull cord of release wheel in a window blind is disclosed. In the beginning that the release wheel reels the pull cord, the winding angle of the pull cord can be defined that the wound reel can be neatly ordered. In a location of winding hub of the release wheel close to an inner spoke side, at least a piercing hole is transfixed along an inscribed tangent. In addition, a winding definer is further disposed in the direction at which the pull cord is spinning out, allowing the direction of an initial reeling coil to be defined in advance, so that the reel can be wound orderly.

A cord retractor for a window covering comprises a housing and a driving wheel, a reeling wheel, a spring, a friction member and a unidirectional transmission mechanism. The driving wheel and the reeling wheel can rotate with each other. The spring is coupled with the driving wheel and is wound on or unwound from the driving wheel according to a rotating direction of the driving wheel. The friction member is in a closed loop shape and surrounding a shaft of the housing. The unidirectional transmission mechanism is coupled with the friction member and the reeling wheel, and operated in different operation modes according to a rotating direction of the reeling wheel, by which the friction member provides constant resistance to the rotation of the reeling wheel when the reeling wheel rotates in a first direction, and stops providing resistance when the reeling wheel rotates in a second direction.

A lift cord spool assembly may be used in a motorized window treatment. The lift cord spool assembly may include a spool, a housing, and an end cap. The spool may be configured to windingly receive a lift cord of the motorized window treatment. A diameter of the spool may taper by approximately 0.5 degrees from the first end to an opposed second end. The housing may be configured to surround the spool. The end cap may be configured to attach to the housing, for example, such that the spool is retained within the housing. The end cap may include an inner surface, a shoulder, an aperture, and a guide. The guide may be configured to push the lift cord onto the spool as the lift cord is wound onto the spool. The guide may define a gradual slope around a circumference of the shoulder.

A top-down bottom-up window covering includes a first beam and a second beam, which are sequentially provided below a fixture, and a covering material connecting the first beam and the second beam. A first lifting structure is installed in the first beam, and a second lifting structure is installed in the second beam. The first lifting structure is adapted to operate as the first beam is being controlled to move toward or away from the fixture, and the second lifting structure is adapted to operate as the second beam is being controlled to move toward or away from the fixture. Thus, the top-down bottom-up window covering can be easily assembled and maintained.

A shading device including a first driving shaft that is rotatably supported within a headbox and may drive a first moving member and a second driving shaft that is rotatably supported within the headbox and may drive a second moving member, the shading device includes a first pulley that drives the first driving shaft, and a second pulley that is disposed at a position different from the first pulley in a longitudinal direction of the headbox and drives the second driving shaft.

A lift cord spool assembly may be used in a motorized window treatment. The lift cord spool assembly may include a spool, a housing, and an end cap. The spool may be configured to windingly receive a lift cord of the motorized window treatment. A diameter of the spool may taper by approximately 0.5 degrees from the first end to an opposed second end. The housing may be configured to surround the spool. The end cap may be configured to attach to the housing, for example, such that the spool is retained within the housing. The end cap may include an inner surface, a shoulder, an aperture, and a guide. The guide may be configured to push the lift cord onto the spool as the lift cord is wound onto the spool. The guide may define a gradual slope around a circumference of the shoulder.

The present invention relates to a biconical variable force transmission self-balancing lifting curtain, including a plurality of curtain sheets, a bottom rail, a traction rope, a lifting control piece and a variable force output structure, wherein the variable force output structure includes a first pull rope, a second pull rope, a variable force spring, a first conical reel and a second conical reel. Through the variable force spring in the variable force output structure, in the ascending process of the lifting curtain, a gradually-increased elastic force is provided; and further, two biconical reels are utilized, whereby the relationship of force arms at two ends is changed, and the elastic force of the variable force spring is amplified enough to balance the gradually-increased tensile force of the traction rope on the lifting control piece.

A cord winding assembly for a window shade includes a housing, a first and a second spool portion respectively connected with a first and a second suspension cord, and a transmission axle. The first and second spool portions are disposed in a cavity of the housing. The transmission axle is rotationally coupled to the first and second spool portions and extends outside the housing at least at one end thereof, the transmission axle and the first and second spool portions being rotatable concurrently relative to the housing in a first direction for respectively winding the first and second suspension cords around the first and second spool portions, and in a second direction opposite to the first direction for respectively unwinding the first and second suspension cords from the first and second spool portions.

A window shutter actuation device includes a cord for driving window shutter slats to move, a retracting mechanism for winding an end of the cord away from the window shutter slats, a brake mechanism arranged between the retracting mechanism and the window shutter slats for controlling a retracting or releasing speed of the cord, and a power mechanism for driving the retracting mechanism to rotate to wind the cord. The retracting mechanism includes a frame, a reel rotatably mounted to the frame for winding the cord, and a wheel arranged outside and adjacent to an end of the reel. The end of the cord wound on the reel passes about the wheel and then extends to the brake mechanism after extending from the reel.