The width of the clockwork spring design

Due to the design with clockwork spring box, often need to determine the number of geometry size than the known number relation, therefore, often need to be selected in the design of some size and parameters, usually under the condition of meet the requirements of torque, according to the mechanism of axial size as far as possible choose larger clockwork spring width, and reducing the thickness of the clockwork spring, in this way, on the one hand be narrowed radial size, don't on the one hand, clockwork spring torque changes also smaller.