发明名称 |
Dust preventing device for electromagnetic contactor |
摘要 |
A dust preventing device for an electromagnetic contactor prevents foreign matters accumulated on a foreign matter preventing wall from slipping off the wall due to vibrations of electromagnetic contactor. In a case where an arc extinguishing chamber cover is disposed to cover a fixed contact and a movable contact, and includes a foreign matter preventing wall provided under a gas discharging opening formed on the cover, the foreign matter preventing wall is formed with ribs provided therearound in a shape of an embankment. Therefore, foreign matters having entered through the gas discharging opening can be positively trapped in a hollow portion surrounded by ribs, so that the foreign matters do not fall into the electromagnetic contactor from the foreign matter preventing wall due to vibrations of the contactor.
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申请公布号 |
US5235304(A) |
申请公布日期 |
1993.08.10 |
申请号 |
US19920885812 |
申请日期 |
1992.05.20 |
申请人 |
FUJI ELECTRIC CO., LTD. |
发明人 |
OHTAKE, SHIGEAKI;HIROTA, TAKATO;NOZUKIDAIRA, CHUUJI |
分类号 |
H01H50/00;H01H9/34;H01H50/02 |
主分类号 |
H01H50/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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