Flat spiral energy storage for rewind, timing and return. Torque curve, useful turns, arbor and end attachments jointly determine performance.
Flat spiral energy storage for rewind, timing and return. Torque curve, useful turns, arbor and end attachments jointly determine performance.
Use these values for early selection. Final dimensions, tolerances and loads are confirmed by engineering review and approved samples.
Flat spiral springs that store and release torque for rewind and return mechanisms
Cable reels, tapes, blinds and belt mechanisms.
Timers, toys and compact stored-energy systems.
Covers, displays and auto-return mechanisms.
Arbor diameter, case side clearance and friction change the torque curve, so validate samples in representative hardware.
Attachments see local bending and wear. Avoid sharp corners and record attachment failure locations during life testing.
Procurement GuideDefine free length, wire diameter, load points, tolerance, winding direction and finish to reduce clarification cycles.
Failure & LifeOverload-driven permanent deformation and time-dependent load loss under fixed deflection need different controls.
Procurement GuideForming complexity, tolerance, setup, secondary processing, inspection and packaging strongly affect unit and tooling cost.
The working curve can be optimized, but material, winding state and friction remain. Define allowed torque at multiple turns.
The arbor controls minimum curvature and the housing limits expansion, affecting torque, friction and life.