초록 ▼

A print wire solenoid for high-speed operation is made with two major components or subassemblies. The first is a plastic injected unitary bobbin or stator assembly which incorporates a core ring and a core, and a stator which forms a bobbin for receiving an electric coil. The parts in the stator ar

A print wire solenoid for high-speed operation is made with two major components or subassemblies. The first is a plastic injected unitary bobbin or stator assembly which incorporates a core ring and a core, and a stator which forms a bobbin for receiving an electric coil. The parts in the stator are positioned and molded to a datum surface. The second major subcomponent is a unitary armature assembly which incorporates an armature, a retraction spring, and a print wire, all anchored to a plastic body. These parts are likewise positioned with respect to a datum surface. The stator assembly and armature assembly are retained within a drawn metal case, and a rebound disc is positioned within the case and locates the datum surface of the armature assembly in the same plane as the datum surface of the stator assembly so as to define an accurate working air gap.

대표청구항 ▼

As a subcombination of a print wire solenoid, an improved armature assembly comprising an injection molded plastic support body, an armature encapsulated in said body, a print wire having one end molded in saidbody and extending axially of said armature, and a retraction spring molded in said body.

As a subcombination of a print wire solenoid, an improved armature assembly comprising an injection molded plastic support body, an armature encapsulated in said body, a print wire having one end molded in saidbody and extending axially of said armature, and a retraction spring molded in said body. An improved stator construction for a solenoid comprising an injection molded plastic body having spaced front and rear walls, and a central tubular section for receiving a coil of electric wire thereon between said walls, a stator core encapsulated in said body in said tubular section, and said front wall further having an integral portion extending forwardly thereof providing a mounting attachment for the solenoid.