MICRO RELAY - MATSUSHITA ELECTRIC WORKS LTD

Title:

MICRO RELAY

Document Type and Number:

WIPO Patent Application WO/2005/071707

Kind Code:

A1

Abstract:

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.

Inventors:

HASHIMOTO TAKESHI (JP)
FURUMOTO NORITERU (JP)
OKUMURA NAOKI (JP)
ENOMOTO HIDEKI (JP)
SADAMORI TAKESHI (JP)
KISHIMOTO SHINICHI (JP)
SHIMOMURA TSUTOMU (JP)
SAKAI KOUJI (JP)
HORI MASAMI (JP)

Application Number:

PCT/JP2005/000909

Publication Date:

August 04, 2005

Filing Date:

January 25, 2005

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC WORKS LTD (JP)
HASHIMOTO TAKESHI (JP)
FURUMOTO NORITERU (JP)
OKUMURA NAOKI (JP)
ENOMOTO HIDEKI (JP)
SADAMORI TAKESHI (JP)
KISHIMOTO SHINICHI (JP)
SHIMOMURA TSUTOMU (JP)
SAKAI KOUJI (JP)
HORI MASAMI (JP)

International Classes:

B81B3/00; B81B5/00; B81C3/00; H01H49/00; H01H50/00; H01H50/02; H01H50/04; H01H50/14; H01H50/18; H01H50/36; H01H51/22; (IPC1-7): H01H50/04; H01H50/02; H01H50/18; H01H50/36

Domestic Patent References:

WO2004017349A1

2004-02-26

Foreign References:

JPH06267392A	1994-09-22
JPH05342965A	1993-12-24
JPS52107563A	1977-09-09
JPH06162900A	1994-06-10
JPH10162713A	1998-06-19
JP2000200531A	2000-07-18
JPH08227646A	1996-09-03
JP2001076605A	2001-03-23
JPH0521295B2	1993-03-24

Other References: