Coil for electromagnet utilized in e.g. electromagnetic actuator, has cover comprising two parts that are firmly connected with each other at impact edge via provision of energy, where one of parts comprise mechanical structure

摘要

The coil (2) has a medium dense cover comprising two parts (4, 5), where the parts are firmly connected with each other at an impact edge (8) via provision of energy. One of the parts is formed as bobbin and made from polyphenylene sulfide and the other part is made of polyamide. The former part comprises a mechanical structure i.e. ribs (10), to produce a form-fit connection. The latter part is manufactured by partial over molding of the former part and the coil, where energy is provided through ultrasonic welding, friction welding or laser welding.