SNAP ACTION MECHANISM AND PRESSURE SWITCH EMPLOYING IT

Title:

SNAP ACTION MECHANISM AND PRESSURE SWITCH EMPLOYING IT

Document Type and Number:

WIPO Patent Application WO/2006/090797

Kind Code:

A1

Abstract:

A pressure switch comprising an external force transmission mechanism separating a cover and a housing, a first pressure chamber sectioned by the cover and the external force transmission mechanism, and a second pressure chamber sectioned by the housing and the external force transmission mechanism. The second pressure chamber is provided with a movable piece having first and second movable portions located oppositely, and one or more fixed contacts. The first and second movable portions are coupled through a leaf spring. The second movable portion is provided with a contact functioning as a movable contact. When the external force transmission mechanism applies an external force to the first movable portion, the first movable portion is displaced, the second movable portion is reversed at the action point of the first movable portion, and thus the movable contact comes into contact with the fixed contact.

Inventors:

OCHIAI KOUICHI (JP)
TSUMURA TAKASHI (JP)
ABE KAZUO (JP)
WARASHINA ISAMU (JP)

Application Number:

PCT/JP2006/303317

Publication Date:

August 31, 2006

Filing Date:

February 23, 2006

Export Citation:

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Assignee:

YAMATAKE CORP (JP)
OCHIAI KOUICHI (JP)
TSUMURA TAKASHI (JP)
ABE KAZUO (JP)
WARASHINA ISAMU (JP)

International Classes:

H01H35/34; H01H5/18

Foreign References:

JPH05114341A	1993-05-07
JPS57163638U	1982-10-15
JPS6313213A	1988-01-20
DE1640613A1	1970-10-01
GB722658A	1955-01-26

Other References: