High-voltage switches with arc preventing or extinguishing devic – Arc preventing or extinguishing devices – Vacuum
Patent
1998-01-26
1999-07-27
Scott, J. R.
High-voltage switches with arc preventing or extinguishing devic
Arc preventing or extinguishing devices
Vacuum
200 5027, 200289, 200258, 218123, 361676, H01H 146, H01H 162, H01H 900, H01H 3366, H02B 100
Patent
active
059294108
ABSTRACT:
A terminal structure of a vacuum circuit breaker is capable of effectively radiating heat when conducting electricity. The terminal structure includes a flat terminal connected with the switching mechanism; a cylindrical terminal having one end welded to the flat terminal, a plurality of radiation fins are formed on an outer circumferential surface thereof, a through hole is formed through a center axis thereof, a plurality of screw fastening grooves are provided on a front surface thereof, and each air vent is formed on one portion and the other portion of the outer circumferential surface thereof; a fastening plate is connected with the front surface of the cylindrical terminal by a plurality of screws, and formed with a hole in a center portion thereof, a plurality of screw fastening holes corresponding to the screw fastening grooves of the cylindrical terminals, and a plurality of insertion grooves along an outer circumferential surface thereof; a plurality of contactors are respectively inserted in the corresponding insertion grooves of the fastening plate, and are formed with a plurality of ring spring fixing grooves on an upper surface of each end thereof; and a ring spring, placed on a corresponding one of the ring spring fixing grooves of the contactors, for fixing each contactor to the cylindrical terminal.
REFERENCES:
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patent: 3127492 (1964-03-01), Date
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patent: 5486662 (1996-01-01), Takishi
patent: 5770827 (1998-06-01), Maki
LG Industrial Systems Co. Ltd.
Scott J. R.
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