Nec Corporation

Matsujiro Ikeda

Naoto Okihara

Masayuki Morimoto

Katsuto Kojima

Kiyotaka Yokoo

Hideki Hitachi

Naohiro Tanioka

Kazuya Yamakosi

In a seesaw type electromagnetic relay comprising an armature carrying out a seesaw motion by excitation of an electromagnet, and a movable spring which carries out the seesaw motion in synchronism with the seesaw motion of the armature and which comprises a par of spring sections, at least one of the spring sections forks into two branches to form a pair of spring pieces one of which is bent downward. A pair of movable contacts is mounted at both free end parts of the movable spring on a bottom surface of the movable spring. One of the movable contacts is mounted at the free end part in the spring pieces on bottom surfaces thereof to form a pair of movable contact elements acting as a twin movable contact. A pair of fixed contacts faces the pair of movable contacts. In an open state, a distance between one of the movable contact elements in the twin movable contact and the fixed contact opposed to the twin movable contact is different from another distance between another of the movable contact elements in the twin movable contact and the fixed contact opposed to the twin movable contact. The fixed contact opposed to the twin movable contact may consist of a twin fixed contact having a difference in level.

Seesaw type electromagnetic relay serving as a continuous contact with a

In a surface mount type leadless electromagnetic relay, movable contacts, movable contact springs, stationary contacts and terminals which are electrically connected to external circuit from coils are formed integrally with a base formed of an insulating material. The terminals are extended to the bottom of the body of the relay. The entire relay has a height and a mounting area which are respectively equal to the height and mounting area of its body.

Surface mount type leadless electromagnetic relay

A miniature flat relay comprising upper and lower insulating housing member. The lower member has a coil which snugly fits therein. The coil contains a core with a centrally located permanent magnet which energizes a U-shaped magnetic structure and provides a fulcrum for seesaw mounting an elongated armature. Movable electrical contacts project from opposite ends of the armature. A central section of the contacts forms hinge sections which project therefrom in order to secure the armature at said fulcrum. The armature may be made either bi-stable or monostable.

Electromagnetic relay

Growing community of inventors

Tokyo, Japan

Matsujiro Ikeda