Title:
SNAP ACTION MECHANISM AND PRESSURE SWITCH USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2006/090447
Kind Code:
A1
Abstract:
A pressure switch using a snap action mechanism, comprising an external force transmission mechanism separating a cover from a housing. A room partitioned by the cover and the external force transmission mechanism is designated as a first pressure chamber and a room partitioned by the housing and the external force transmission mechanism is designated as a second pressure chamber. The second pressure chamber comprises a movable piece having a first movable part and a second movable part positioned oppositely to each other and one or more fixed contacts. The first movable part is joined to the second movable part through a leaf spring. The second movable part comprises a contact which functions as a movable contact. When the external force transmission mechanism applies an external force to the first movable part, the first movable part is displaced, the second movable part is inverted at the acting point of the first movable part, and the movable contact is brought into contact with the fixed contact.
Inventors:
OCHIAI KOICH (JP)
TSUMURA TAKASHI (JP)
TSUMURA TAKASHI (JP)
Application Number:
PCT/JP2005/002920
Publication Date:
August 31, 2006
Filing Date:
February 23, 2005
Export Citation:
Assignee:
YAMATAKE CORP (JP)
OCHIAI KOICH (JP)
TSUMURA TAKASHI (JP)
OCHIAI KOICH (JP)
TSUMURA TAKASHI (JP)
International Classes:
H01H5/18; H01H35/34; (IPC1-7): H01H5/18; H01H35/34
Foreign References:
| JPH05114341A | 1993-05-07 | |||
| JPS57163638U | 1982-10-15 | |||
| JPS6313213A | 1988-01-20 | |||
| DE1640613A1 | 1970-10-01 | |||
| GB722658A | 1955-01-26 |
Attorney, Agent or Firm:
Tazawa, Hiroaki (7-1 Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, JP)
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