Method for mounting a helicoidal spring in a moulded piece of an apparatus, particularly and electrical apparatus, machine for carrying out this method and apparatus with corresponding mechanism

摘要

The moulded component forms part of an electrical switch to be attached to a spring. It includes a cylindrical cavity (31) within which a helicoidal spring (15) is retained. A tool is inserted to flatten a central shaft, thus retaining the inserted end of the spring The moulded component forms part of an electrical switch to be attached to a spring. The component includes a cavity (31) which is cylindrical and of sufficient diameter to receive a helicoidal spring (15). In the base of the cavity there is a hollow shaft (35) standing with its axis parallel to and coaxial with the cylindrical cavity. At the same time as the spring (15) is introduced into the cavity (31) a shaft (38) with a tapered end (38a) is also introduced. This acts on the hollow shaft, flattening and widening its end forming a rim (40) which retains the first coil of the helicoidal spring.