Micro relay

Details Micro relay Micro relay

H - Electricity

01

H

H01H 50/04 (2006.01) H01H 50/02 (2006.01) H01H 50/18 (2006.01) H01H 50/36 (2006.01)

Patent

CA 2520250

A micro relay includes a base substrate (3), an armature block (5), and a cover (7). The base substrate (3) has an indentation (41) for containing an electromagnetic device (1). The indentation is formed by a through hole (41a) penetrating the base substrate (3) and an indentation cover (41b) of thin film attached to one surface of the base substrate so as to close the opening of the hole. The electromagnetic device (1) is isolated from a contact mechanism by the indentation cover (41b), thereby increasing the reliability of the contact. The electromagnetic device (1) includes a yoke (10), a coil (11) wound around the yoke (10) to generate a magnetic flux in accordance with the excitation current, and a permanent magnet (12) attached to the yoke (10) and generating a magnetic flux passing through the armature (51) and the yoke (10). By attaching the permanent magnet (12) to the yoke (10), it is possible to reduce the thickness of the relay.

L'invention concerne un micro-relais comprenant un substrat de base (3), un bloc d'armature (5) et un couvercle (7). Le substrat de base (3) présente une indentation (41) destinée à contenir un dispositif électromagnétique (1). L'indentation est formée par un trou traversant (41a) pénétrant dans le substrat de base (3) et un couvercle d'indentation (41b) constitué d'une couche mince est fixé sur une surface du substrat de base de manière à fermer l'ouverture du trou. Le dispositif électromagnétique (1) est isolé d'un mécanisme de contact par le couvercle d'indentation (41b), augmentant ainsi la fiabilité du contact. Le dispositif électromagnétique (1) comprend une culasse (10), une bobine (11) enroulée autour de la culasse (10) afin de générer un flux magnétique conformément au courant d'excitation, ainsi qu'un aimant permanent (12) fixé à la culasse (10) et générant un flux magnétique traversant l'armature (51) et la culasse (10). Par fixation de l'aimant permanent (12) sur la culasse (10), il est possible de réduire l'épaisseur du relais.

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