Electromagnetic device assembly for spring-stressed piston-type accumulator, has socket connected with pole part by injection molding process for plug, where components of assembly are assembled before winding wire coil

摘要

The assembly has a spool (130) for carrying a wound wire coil (140), and a pole part (110) connected with the spool by a clip connection of the spool when the spool is injection molded at the pole part. A socket (90) is connected with the pole part by an injection molding process for a plug to supply power to the wire coil, where components of the assembly are assembled before winding the wire coil. Two ends of the wire coil are directly connected at contact pins of the socket. An independent claim is also included for a spring-stressed piston-type accumulator with a locking function.