ELECTROMAGNETIC ACTUATOR UPPER SPRING ASSEMBLY

摘要

An electromagnetic actuator (10) includes housing structure (12), first and second electromagnets (14, 16) disposed in spaced relation in the housing structure, an armature (24) mounted for reciprocal movement between the electromagnets, and a spring assembly (11) operatively associated with the armature (24). The spring assembly includes a coil spring (30), a spring retainer (32) carrying the coil spring and being constructed and arranged to contact the armature (24), a spring adjusting member (38) engaged with a bore in the housing structure (12) and engaging the spring (30) so as to control compression of the spring associated with a set position of the armature (24) between the electromagnets. At least one cap screw (50) extends from a surface of the housing structue generally adjacent to the bore. A locking member (56) is engaged with the spring adjusting member (38) and with the cap screw (50). The cap screw (50) pushes against the locking member (56) to prevent movement of the spring adjusting member (38) to maintain the compression of the spring (30) associated with the set position of the armature (24).