Contactor
AssigneeMatsushita Electric Works, Ltd.
InventorsRitsu Yamamoto, Tsutomu Shimomura, Riichi Uotome, Hideki Enomoto, Takehiko Toguchi, Mamoru Tateno, Yoshiyuki Iwami
Life of this patent
Estimating the term…
Abstract
A contact apparatus is provided having a permanent magnet disposed in a region where a fixing contact point is mounted to a fixing contact and a movable contact to which a movable contact point is mounted. An arc generated between both the contact points is moved in a lateral direction by the magnetic force of the permanent magnet and stretched. An arc-extinguishing member which is heated by the arc for generating arc-extinguishing gas is provided such as to surround the fixing contact point and the movable contact point.
Claims16
A contact apparatus comprising:
- a fixed contact having a fixed contact point,
- a movable contact provided with a movable contact point which is connected to and separated from the fixed contact point, both the fixing contact and the movable contact providing running portions having different lengths with respect to the other,
- a driving mechanism for driving the movable contact, the driving mechanism having a permanent magnet disposed in a vicinity of a region where the fixed contact point and the movable contact point are located, an arc generated when the fixed contact point and the movable contact point are separated from each other is moved in a lateral direction with respect to the fixed contact point and movable contact point by magnetic force of the permanent magnet, and
- an arc-extinguishing member made of insulative material capable of generating arc-extinguishing gas is provided in a region near the fixed contact point and the movable contact point.
Dependencies are inferred from the claim text.