Venetian blind braking head

Abstract

The invention discloses a venetian blind braking head. The venetian blind braking head includes a braking-head upper base, a braking-head bottom base, a driving device, an output device, a transmission device, a driving ring and a torsional spring, wherein the driving ring and the torsional spring are arranged between the braking-head upper base and the transmission device. Compared with the prior art, the driving ring and the torsional spring are arranged between the braking-head upper base and the transmission device, one end of the torsional spring is buckled in torsional-spring clamping grooves of the driving ring, and the other end of the torsional spring is buckled in torsional-spring clamping grooves at the lower end of the transmission device. An initial force can be set according to the weight of a venetian blind, when the venetian blind is rolled up, the initial force of the torsional spring drives the transmission device, further, the venetian blind is driven to carry out a roll-up motion, so that the driving force of the braking head is uniform and gentle in the whole process of rolling up the venetian blind, and then the problem is solved that in the prior art, hand feeling turns worse due to the increase of the driving force along with the increase the roll-up height of the venetian blind; meanwhile, the venetian blind braking head is simple in structure and stable in performance and has great population and application prospects.

Description

technical field [0001] The invention belongs to the field of curtain products of a sunshade system, and in particular relates to a blind head. Background technique [0002] At present, there is no preset initial force for the head of the venetian blinds. When the venetian blinds are retracted from the bottom, the weight of the curtains will be heavier as the height of the venetian blinds is retracted. The greater the driving force on the top, the heavier the feeling when the curtains are closed, which affects the quality of use of the blinds. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a venetian blind head. [0004] In order to solve the above-mentioned technical problems, a venetian curtain head is provided, which includes a head top seat, a head bottom base, a driving device, an output device, a transmission device, and a driving ring and a torsion spring arranged between the head top seat and the tr...

AI Technical Summary

Problems solved by technology

[0002] At present, there is no preset initial force for the head of the venetian blinds. When the venetian blinds are retracted from the bottom, the weight of the curtains will be heavier as the height of the venetian blinds is retracted. The greater the driving force on the top, it will feel heavier and heavier when the curtains are closed, which will affect the quality of use of the blinds

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