The invention provides a roller blind device with stepless adjustment comprising a roller blind base, a reel unit pivotally disposed on the roller blind base, and a blind fabric assembled on the reel unit, the reel unit comprises a first positioning unit, a second positioning unit, an outer tube accommodates the first positioning unit and the second positioning unit, a rotating shaft is assembled with the first positioning unit, and a first elastic member is disposed on the rotating shaft. Thereby, after a user combines the reel unit assembled with the blind fabric and the roller blind base, the user can drive the connected first elastic member to contract or loosen by adjusting the first positioning unit, so that a counterweight relationship between the reel unit and the blind fabric can be adjusted to achieve the roller blind device with stepless adjustment capable of adjusting a counterweight relationship.

The invention provides a roller blind device with stepless adjustment comprising a roller blind base, a reel unit pivotally disposed on the roller blind base, and a blind fabric assembled on the reel unit, the reel unit comprises a first positioning unit, a second positioning unit, an outer tube accommodates the first positioning unit and the second positioning unit, a rotating shaft is assembled with the first positioning unit, and a first elastic member is disposed on the rotating shaft. Thereby, after a user combines the reel unit assembled with the blind fabric and the roller blind base, the user can drive the connected first elastic member to contract or loosen by adjusting the first positioning unit, so that a counterweight relationship between the reel unit and the blind fabric can be adjusted to achieve the roller blind device with stepless adjustment capable of adjusting a counterweight relationship.

To provide a shade guide structure which can be used for an application in which the guide rails are curved, in which the sliding resistance is low, and which can reduce abrasion, a shade guide structure includes: a shade sheet wound around a winding shaft so that the shade sheet can be wound up and drawn out; guide belts provided along either side edge of the shade sheet and each joined to the shade sheet via a fixation part provided substantially at a center in a width direction; and left and right guide rails which guide the guide belts in a longitudinal direction when the shade sheet is wound up or drawn out, wherein each guide rail includes: a guide wall having a lock surface which is inclined relative to the shade sheet in a transverse cross section and locks the guide belts; a slot which is formed in the guide wall and through which the shade sheet passes; and a guide part which contacts the shade sheet such that the shade sheet extends from the fixation part substantially at a right angle to the guide belt.

An opening and closing body includes a plurality of rod-shaped members, and a plurality of coupling members configured to couple the plurality of rod-shaped members. Each of the coupling members includes a pair of fitting parts that are spaced apart in a guide direction and configured to be fitted to a coupling target pair of rod-shaped members that are adjacent to each other in the guide direction. Each of the fitting parts includes a cover part having flexibility and configured to cover a range of an outer circumferential surface of the fitted rod-shaped member, the range being smaller than a circumference of the outer circumferential surface and larger than half the circumference as viewed in a first direction.

An opening and closing body includes a plurality of rod-shaped members, and a plurality of coupling members configured to couple the plurality of rod-shaped members. Each of the coupling members includes a pair of fitting parts that are spaced apart in a guide direction and configured to be fitted to a coupling target pair of rod-shaped members that are adjacent to each other in the guide direction. Each of the fitting parts includes a cover part having flexibility and configured to cover a range of an outer circumferential surface of the fitted rod-shaped member, the range being smaller than a circumference of the outer circumferential surface and larger than half the circumference as viewed in a first direction.

With a high performance door, preferably high speed door, for closing an opening (11), preferably in a wall (12) comprising a flexible curtain (13) to be wound and unwound on a shaft to open and close the opening (11) with a rigid bottom beam (15) attached on the lower end of said curtain (13) the risk from the bottom beam to the environment upon opening is reduced in, that the rigid bottom beam (15) comprising at least one flush side (20) at least almost flushing the curtain (13).

With a high performance door, preferably high speed door, for closing an opening (11), preferably in a wall (12) comprising a flexible curtain (13) to be wound and unwound on a shaft to open and close the opening (11) with a rigid bottom beam (15) attached on the lower end of said curtain (13) the risk from the bottom beam to the environment upon opening is reduced in, that the rigid bottom beam (15) comprising at least one flush side (20) at least almost flushing the curtain (13).

A roller blind comprises an upper rail, a roller blind device located at one end of the upper rail, a position limiting device located at another end of the upper rail, two fixing brackets provided for pivotally connecting with the roller blind device and the position limiting device and fixing above a window, a lower rail disposed at an interval below the upper rail, and a blind. Two ends of the blind are fixed on the upper rail and the lower rail. The blind is wound on a surface of the upper rail. One end of the position limiting device protrudes from an outer end of the upper rail and is combined with the fixing bracket at a right side, and is capable of adjusting lower and upper limit positions of the lower rail from an outer side of the fixing bracket at the right side.

A roller blind comprises an upper rail, a roller blind device located at one end of the upper rail, a position limiting device located at another end of the upper rail, two fixing brackets provided for pivotally connecting with the roller blind device and the position limiting device and fixing above a window, a lower rail disposed at an interval below the upper rail, and a blind. Two ends of the blind are fixed on the upper rail and the lower rail. The blind is wound on a surface of the upper rail. One end of the position limiting device protrudes from an outer end of the upper rail and is combined with the fixing bracket at a right side, and is capable of adjusting lower and upper limit positions of the lower rail from an outer side of the fixing bracket at the right side.

Wheel carriage assemblies and related fabric deployment systems and methods are disclosed. A wheel carriage assembly comprising at least one wheel with ball bearings on the interior of each wheel, and a pivot point that allows for position independence, is configured with a hembar coupled to a piece of fabric to allow a surface of varying shape to be covered. The system provides the ability to cover both traditional window shapes as well as surfaces of irregular shape or inclined orientation, and reduces and evens the amount of wear on certain components to extend system life.