Torsion Springs

Torsion Springs


Torsion springs are coil springs designed to apply or resist a twisting (torsional) force around a center point. They can also be manufactured with two sets of coils wound in opposite directions around the same center axis. These are referred to as "double torsion springs." The coils of a torsion spring are usually close wound with minimal tension between the coils, but they can also be made open wound to reduce friction or to create a spring that functions as both a torsion spring and a compression spring. Torsion springs typically have two legs that can be formed into almost any configuration in order to be connected to other components. The simplest torsion springs have two straight tangential legs that simply push against the mating components.

The D.R.Templeman Company is unique in the world of torsion springs manufacturers, especially when it comes to very small torsion springs.  To learn more about our unique capabilities or to search our inventory of stock torsion springs, click the buttons below:


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Many common devices utilize torsion spring technology.

D.R. Templeman: Picture of Various Torsion Springs
  Click for larger image

They include:
 

  • Hinges
  • Mouse traps 
  • Clothes pins
  • Window shades
  • Firearms
  • Doorknobs




Torsion springs can be either left-hand or right-hand wound, and they should be designed so that an applied force will wind up the spring (not unwind it). They function best when they are supported by a hub, shaft, or tube inserted through the body coils; however, the designer must keep in mind that the diameter of the coils gets smaller and the length of the body increases as the spring is wound up.

The two sets of coils in a double torsion spring are connected by a center "tongue" and can work either in parallel or independently. A double torsion spring designer must consider each half of the spring separately and then calculate the total torque as the sum of the torques of the two halves. Double torsion springs are usually designed so that they are symmetric, but this is not a requirement.

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