Engineer’s Tips for Application of Variable Force Springs and Variable Torque Spring

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Engineer’s Tips for Application of Variable Force Springs and Variable Torque Spring
Engineer’s Tips for Application of Variable Force Springs and Variable Torque Spring
Example 1
Example 1
Example 2
Example 2
Example 3
Example 3
Example 4
Example 4

Variable force spring and variable torque spring are very similar with constant force spring and constant torque spring. But we diversify the radian by winding the steel strip into a coil. Therefore, it can unfold negative gradient, positive gradient compounded in a spring. Here are some relations between load (force or torque) and stroke that can be used on specific occasion.

Pen Type Drug Injector Application

The spring exerts constant force to keep the drug flow fixed, preventing the patient from feeling uncomfortable when applying it. It features stretch force in end of the stroke to ensure all drug can be injected entirely. (See Example-1)

Fireplace up-down Slide Door

Variable force spring can be applied to up-down slide door of fire place.
When the door is closed, the spring force is less than the weight of door; while the door in middle stroke, the spring force is equal to the door weight. When fully open, the spring exerts force greater than the door weight to secure the door does not slide down. (See example-2)

Point of Purchase Display

Variable force spring can be applied to point of purchase display. The spring export variable force to match the quantity of display items. While the large force can ensure push large quantity display item smooth, the small force push small quality items availably and avoid flattening the display items. (See Example-3).

Cordless Shades

The variable torque spring can be applied to cordless shade, it makes user to adjust curtain up and down easily. The spring exerts smaller torque step by step, which generate balance of gravity to allow the curtain to stop at any height. (See example-4)

For further information please click here.

Posted on April 14, 2020 - (26761 views)
Ming Tai Industrial Co., Ltd
No.250, Sing Jhong Road Tamsui Dist. 251
251 New Taipei City - Taiwan (roc)
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Ming Tai is a professional manufacturer of steel strip spring, including conventional springs, constant force spring, constant torque spring, constant force spring for carbon brush, power spring, and variable force springs, etc.

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