FORMED METAL CORE BLOCKING

摘要

Formed metal blocking (2), for mounting within wedge-shaped gaps (10) between coils of a toroidal transformer, including butterfly-shaped top (4) and bottom (6) core blockings. The blockings are formed from identical stampings (16), each stamping having a pair of U-shaped coil-engaging faces (18, 20) joined along their inner legs by a center web (22). The stampings are jointed back to back and have a number of flanges which are bent over for securing the stampings to one another. The stampings have an apertured tab (54) at the end of the center web used to form a lifting eye (58) for the top blocking. With the bottom blocking, the tabs are folded over for mounting to a base plate (8). The outer legs (70, 72) of the U-shaped faces are longer than the inner legs (74, 76) and center web to create a gap (78) in the electric path surrounding the core.