Technical requirements of plug shrapnel for various electrical appliances

Technical requirements of plug shrapnel for various electrical appliances
The radius of the bending part of the spring piece of the electrical plug and the spring piece in the forming process, most of them have to be bent. If the radius of curvature of the bending parts is relatively small, then these parts will produce large stress. Therefore, the bending radius should be at least five times of the thickness of the plate to avoid large stress in the bending part.
The stress concentration at the gap or hole of the spring piece of the electrical plug. The spring leaf often has step parts and holes, and stress concentration will be produced at the step where the size changes rapidly. The smaller the diameter of the hole and the larger the width of the plate, the greater the stress concentration factor.
The shape and dimension tolerance of spring piece of electrical plug is usually processed by stamping. In the design, the shape and size suitable for stamping should be selected. At the same time, the spring back during bending and the deformation caused by heat treatment should be fully considered.