Common Standard Torsion Spring

 

Packaging Methods

1. Bulk (Plastic bag)

2. Plastic tray

3. Tape & Reel (For SMT)

What are the common torsion springs widely used for? 

Torsion springs are the go-to solution for any mechanism needing a controlled, rotational snap-back. They provide the essential "twist" in everyday items like clothespins and door hinges, and are built for heavy-duty performance in garage door systems and mouse traps. Beyond simple mechanics, these springs are critical for the precise return movement in electrical switches, relays, and specialized electronic assemblies where rotational torque is key.

FAQ for Common Torsion Spring

Q1: How do the leg angle and moment arm length influence the final torque output in a tight electronic assembly? 

A: The leg position relative to the axis determines the starting torque, while the moment arm length dictates the force required at the tip. A longer moment arm reduces the required force for the same torque, allowing for more delicate control in sensitive relay or switch return mechanisms.

Q2: Why is the direction of wind considered a "critical fail" point if specified incorrectly for a rotating component? 

A: A torsion spring must be wound in the direction that causes the coils to tighten during loading. A right-hand wound spring applies torque counterclockwise, whereas a left-hand version works clockwise; choosing the wrong direction causes the spring to uncoil, leading to immediate failure or coil binding.

Q3: How does Goodkey prevent "permanent set" or yielding when a spring faces its maximum deflection limit?

A: We calculate the safe angle of rotation based on the wire diameter and material tensile strength. By ensuring the application stays within the maximum deflection range, we prevent the spring from yielding, which is the most common cause of failure in high-cycle devices like electrical switches.

Q4: For conductive rotational interfaces, what advantage do copper alloys provide over traditional high-carbon steel? 

A: While steel offers high torque, copper alloys like Phosphor Bronze or Beryllium Copper provide superior electrical conductivity and fatigue resistance. These materials are ideal for electrical relays where the torsion spring must simultaneously provide mechanical torque and a reliable signal path.

Q5: Can complex leg geometries be customized to interface with non-standard mating parts in medical or automotive devices?

A: Yes, leg configuration is our most critical feature. We can manufacture complex legs with custom bends or hooks to securely anchor the spring to stationary points and rotating components, ensuring a proportional restoring torque in unique housing designs.