Furling mechanism for covering curtain

Abstract

The invention relates to a furling mechanism for a covering curtain. The furling mechanism comprises a rotating shaft and an outer pipe, the rotating shaft is used for winding the covering curtain, the outer pipe contains the rotating shaft and the covering curtain, the axial direction of the rotating shaft is parallel to that of the outer pipe, an annular supporting element is fixed into the outer pipe, the rotating shaft is rotatably arranged on the supporting element, and an elongated opening for extending of a free end of the covering curtain is axially formed in the side of the outer pipe. The furling mechanism is characterized in that two coil springs are coaxially arranged at two ends of the rotating shaft respectively, each coil spring comprises an inner end and an outer end, each inner end is positioned at the center, each outer end is positioned on the periphery, the inner ends of the coil springs are connected with the rotating shaft, and the outer ends of the coil springs are connected with the outer pipe. According to the furling mechanism, the contactless coil springs replace traditional left-handed springs to realize a furling function, structures such as a spring bead and core iron are omitted, and the furling mechanism is simpler in structure and more stable in performance. As the sizes of the coil springs are small, the coil springs are arranged at the ends of the rotating shaft, less space is occupied, and weight and noise in operation can be greatly relieved as the core iron is omitted. The furling mechanism inherits characteristics of the coil springs, and the service life can be prolonged.

Description

technical field [0001] The invention relates to a retracting device for rectangular materials, in particular to a retracting mechanism for a shade. Background technique [0002] Roller blinds are widely used in interior environments such as automobiles, and have gradually become an indispensable product in life. As one of the important structures of the roll-up blind, the retracting mechanism realizes the retractable function of the blind. The existing retracting mechanism usually includes an inner tube for winding the shade, and an outer tube for accommodating the inner tube and the shade. The inner tube is provided with a left-handed spring. In order to support the left-handed spring and control the deflection of the left-handed spring The pendulum is also provided with a core iron inside the left-handed spring, one end of the left-handed spring is connected with a spring ball installed on one end of the core iron, and the other end is fixed. When in use, fix the outer t...

AI Technical Summary

Problems solved by technology

The above-mentioned retracting mechanism is equipped with a core iron, which is relatively heavy in weight, and the spring ball is rotatably installed on the core iron. When the curtain is retracted, it is easy to vibrate and generate noise.

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