Electromagnetic miniature relay and method of manufacture

Claim 1

In an electromagnetic miniature relay having a base body containing a flat core being disposed inside of an excitation coil with ends of the core extending from both ends of the coil to form a pole piece at each end of the core for an armature having ends which armature is disposed next to the coil and is pressed against a spring arrangement to have the ends engage both pole pieces when the coil is energized, the improvements comprising said core being embedded in the base body, at least one stationary contact with a terminal pin being embedded in the base body adjacent each end of the coil and in the area of the armature ends, and a contact spring member being connected to a central portion of the armature and having contact portions with a length along the length of the armature to extend beyond the ends of the armature to form movable contacts to overlie the stationary contacts, said movable contacts being moved with the armature so that when the coil is denergized, the ends of the armature form air gaps with each of the pole pieces and the movable contacts are spaced from the adjacent stationary contact elements and when the coil is energized the armature moves against the spring arrangement with the armature ends moving into contact with the pole pieces and the movable contacts which are formed by the ends of the contact portions engage the two stationary contacts to form an electric contact therebetween.

Claim 10

A method of forming a relay having a base body containing a flat core being disposed within an excitation coil and having ends of the flat core extending beyond the ends of the coil to form pole pieces for an armature, said body having a stationary contact with a terminal pin at each end adjacent the pole piece, said armature having a flat contact spring arrangement secured to the center of the armature with the contact portions engaging the stationary contacts when the coil is energized to cause the armature to move against a biasing means and into contact with the each of the pole pieces, said method comprises the steps of providing a flat core and stationary contacts, embedding the core and stationary contacts in the base body, assembling a coil on the body, providing an armature having the contact spring secured to center portion of the body, assembling the armature on the base body with the ends engaging the pole pieces to form an assembly and subsequently placing a protective cap on the assembly to maintain the armature in its position.

Claim 11

A method of forming a relay having a base body containing a flat core being disposed within an excitation coil and having ends of the flat core extending beyond the ends of the coil to form pole pieces for an armature, said body having a stationary contact with a terminal pin at each end adjacent the pole piece, said armature having a flat contact spring arrangement secured to the center of the armature with the contact portions engaging the stationary contacts when the coil is energized to cause the armature to move against a biasing means and into contact with the each of the pole pieces, said method comprises the steps of providing a flat core and stationary contacts, embedding the core and stationary contacts in the base body, assembling a coil on the body, providing an armature having the contact spring secured to center portion of the body, assembling the armature on the base body with the ends engaging the pole pieces to form an assembly and subsequently placing a protective cap on the assembly to maintain the armature in its position.