ELECROMAGNETIC SWITCHING APPARATUS |
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| 申请号 | EP02803929 | 申请日 | 2002-11-26 | 公开(公告)号 | EP1353348A4 | 公开(公告)日 | 2005-03-02 |
| 申请人 | MATSUSHITA ELECTRIC WORKS LTD; | 发明人 | UOTOME RIICHI; ENOMOTO HIDEKI; YAMAMOTO RITSU; KISHI HIDEKI; | ||||
| 摘要 | An electromagnetic switching apparatus comprises a closed-end cylindrical section made of a magnetic material which stores a moving iron core so moved that a moving contact contacts and leaves a fixed contact, a junction member made of a metal material with an inserting hole nearly in the center to movably insert a moving shaft fixed with the moving iron core, and a metal plate made of a nonmagnetic material with a hole almost of the same bore as the closed-end cylindrical section nearly in the center. The closed-end cylindrical section and the junction member are hermetically bonded with the metal plate in between. The moving iron core is stored in the closed-end cylindrical section with a stroke from the junction member that is necessary to the contact between the fixed contact with the moving contact. An electromagnetic switching apparatus of this constitution attains an energy more saved than a conventional electromagnetic switching apparatus because of an improvement in the magnetic efficiency of an electromagnet. | ||||||
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| 说明书全文 | |||||||
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