Sector-shaped curtain bottom piece telescopic positioning device

Abstract

The invention relates to a sector-shaped curtain bottom piece telescopic positioning device. By means of the positioning device, it can be guaranteed that a curtain is kept stiff when flat unfolded, the curtain can be automatically and orderly folded into a sector shape when a drawstring is pulled, the service life of the curtain can be remarkably prolonged, and the positioning device further has the advantages of being simple in structure and low in cost. According to the technical scheme, the sector-shaped curtain bottom piece telescopic positioning device is characterized by comprising a hinge base fixed to the center of a sector-shaped curtain bottom piece and connected with the drawstring of the curtain, two hinge arms rotationally and symmetrically hinged to the hinge base, and two sliding sleeves distributed on the two sides of the hinge base respectively and connected with the hinge arms in an inserted mode and matched with the hinge arms in a sliding mode one to one. The rotation axes of the two hinge arms are horizontal and perpendicular to a wall. The rotation angle of each hinge arm at least includes the depression angle range from the horizontal line to the vertical line.

Description

Technical field [0001] The invention relates to a key device of a fan-shaped curtain, in particular to a telescopic positioning device for the bottom sheet of the fan-shaped curtain. Background technique [0002] Fan-shaped curtains (fan-shaped curtains) are a more popular type of curtain in recent years. Because of their strong decorativeness and convenient use, they are quite popular among consumers. The basic structure of the fan-shaped curtain is to design the curtain fabric as horizontally arranged and arranged in parallel with multiple long strips of cloth connected in sequence from top to bottom, and rely on being vertically arranged in the center of the curtain and passing through the phase one by one. The drawstring of adjacent fabric pieces (passing through the openings on each fabric piece) pulls the central part of the fan-shaped curtain backsheet (the cloth piece located at the lowest part of the fan-shaped curtain), so that the two sides of the backsheet hang down (...

AI Technical Summary

Problems solved by technology

Since the connecting part is the stress node of the entire curtain, and the special structure of the fan-shaped curtain fabric (hemp fabric with less warp and more weft), the sewing part will be damaged quickly, making the curtain unusable

In addition, the use of sewing to connect the drawstring and the negative also makes the central part of the negative protrude toward the outside of the wall when the curtain is completely flattened (the drawstring is completely loosened to make the fan-shaped curtain unfold into a rectangle and the negative is horizontal) (it cannot be kept straight) ), not only affects the overall appearance of the curtain, but also when the drawer is pulled up again to lift the curtain, the bottom of the fan-shaped curtain cannot be automatically and orderly folded into a fan shape, which directly affects the use effect of the curtain

[0004] The above-mentioned defects are the key difficulties of the fan-shaped curtain structure, and the people in the industry have not been able to overcome them after years of hard work, and have become the bottleneck of product promotion and application.

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