Mfg. circuit base element - contacts forming by punching out pattern in plate which is then embedded in resin

摘要

The mfg. method consists of: forming a strip element (24) by punching out first and third fixed contacts (17, 18) to which a first conductive plate (14) can be removably connected, a first central contact (21) between the first and third contacts (17, 18), second and fourth fixed contacts (19, 20) to which a second plate (15) can be removably attached, with a second central contact (22) between; attaching a plate to the strip element (24) and then bending part (21, 22a) of the entral contacts (21, 22) at right angles and embedding all the contacts (17, 19, 18, 20, 21, 22) in a synthetic resin. USE/ADVANTAGE - Esp. for trip switches. Reduces number of components and allows fully automated mass prodn.