Spring type curtain balancer and rope-less rolling type curtain thereof

Abstract

The invention discloses a spring type curtain balancer and a rope-less rolling type curtain thereof. The spring type curtain balancer comprises a mounting sleeve, a friction shaft and a spiral torsion spring, wherein the mounting sleeve is connected with a curtain rotating shaft; the friction shaft is arranged in the mounting sleeve; the spiral torsion spring is arranged on the friction shaft in a sleeving manner; the two ends of the spiral torsion spring respectively extend out to form stirring rods; an inward raised baffle block is arranged on the inner wall of the mounting sleeve; the baffle block is located between the stirring rods at the two ends of the spiral torsion spring. When the curtain is driven to move up and down by the curtain rotating shaft, relative motion exists between the friction shaft and the spiral torsion spring and a friction force is generated, the weight difference of the curtain and a pendant is adjusted to be within the scope of the maximal static friction force, and the strict control on the elasticity of the spring and the weight difference of the curtain and the pendant required by the traditional rope-less rolling type curtain is no longer required, so that the production difficulty of the rope-less rolling type curtain is reduced and the spring type curtain balancer is convenient for large-scale popularization.

Description

technical field [0001] The invention relates to a roll-up curtain, in particular to a spring-type curtain balancer and the drawstring-free roll-up curtain. Background technique [0002] General curtains can be divided into cord-drawn and cordless in structure. Among them, cord-drawn curtains mainly use a cord to drive the curtain body to unfold or collapse, and cordless curtains are Use the hand to apply upward or downward force on the bottom of the curtain body, and cooperate with the drive of a transmission mechanism, so that the curtain body can also achieve the effect of unfolding or retracting. The main structure of the existing drawstring-free window curtain is as follows, including a reel, a curtain, and a return spring, wherein the rolling strength of the return spring is equal to the weight of the curtain, so that upward or downward pressure can be applied under the curtain body by hand. The force moves the curtain up or down. In the production process, it is nece...

AI Technical Summary

Problems solved by technology

In the production process, it is necessary to continuously select and adjust the elastic force of the return spring to match the curtains of different lengths, thicknesses, and materials. When the elastic force of the return spring is small, the curtain will automatically move down. When the elastic force of the return spring is large , the curtain moves up automatically, and it is impossible to hover at any position

And the processing precision of each spare parts is required to be high, otherwise, when the transmission force of each spare parts changes after long-term use, the above problems will also be caused

To sum up, the current production and processing of cordless curtains is difficult and costly, and cannot be popularized on a large scale.

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