When the curtain is pulled to the top it sags and when it is pulled to the bottom it springs back a certain height.
Qianye Spring Company has succeeded in developing this cordless blinds spring. The steps in the design of a cordless curtain spring are as follows.
It is usually necessary to determine the weight of the curtain. It is usually possible to measure the force required to hold the cordless curtain at the top and to measure the force required to hold the cordless curtain at the bottom.
It is usually necessary to determine the duration of use of the curtain. For example, a spring with a life of 8,000 strokes will not loosen or deform within the life of the spring.
The space where the spring is to be placed, the distance between the two springs, the outer diameter of the spring, etc. should be taken into account.
This stage is usually the adjustment of the force. For example, increasing the force of the spring at the beginning or decreasing the force of the spring at the end.
More info：
www.qianyespring.com
https://qyspring.net/
E-mail: sales@qianyejm.com
Whatsapp: +86-183 7490 5808
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