Title:
電子式過負荷継電器のための接点機構
Document Type and Number:
Japanese Patent JP4311879
Kind Code:
B2
Abstract:
The potential for an unreliable indication of a tripped overload relay is eliminated in a trip mechanism for an overload relay that includes a housing, and armature mounted in the housing for movement between two contact opening or closing positions, fixed contacts in the housing and moveable contacts engageable by the armature to be moved thereby toward and away from the fixed contacts and. A moveable lever is associated with the armature and is operable to shift the armature from one of the contact opening or closing positions to the other of the contact opening or closing positions. An operator for the lever is moveable toward and away from the lever and carries a spring finger. The spring finger is engageable with the lever to cause the lever to shift the armature between the positions. The spring finger is moveable with the operator in a path from a first position disengaged from the lever to a second position engaged with the lever and then to a third position disengaged from the lever. A cocking surface is carried by the housing adjacent the path to be engaged by the spring finger as it moves from the first position toward the second position to load the spring finger sufficiently that upon the finger obtaining the second position, it will contain sufficient stored energy to cause a shift of the armature.
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Inventors:
Passau, Christian, Henry
Application Number:
JP2000550125A
Publication Date:
August 12, 2009
Filing Date:
April 23, 1999
Export Citation:
Assignee:
Siemens Energy and Automation, Inc.
International Classes:
H01H50/00; H01H51/24; H01H71/58; H01H5/16; H01H51/22; H01H83/20
Domestic Patent References:
| JP2002543552A |
Foreign References:
| US3928833 |
Attorney, Agent or Firm:
Iwao Yamaguchi
Koichiro Kato
Koichiro Kato