Device for coupling focus unit of fly back transformer

Details Device for coupling focus unit of fly back transformer Device for coupling focus unit of fly back transformer

1997-07-07

1998-08-04

Kincaid, Kristine L.

Electricity: conductors and insulators

Boxes and housings

Hermetic sealed envelope type

174 522, 174255, 336 96, H01L 2328

Patent

active

057897034

ABSTRACT:
A device for coupling a fly back transformer (FBT) focus unit is disclosed. A protecting wall is installed on the coupling portion of the FBT case in such a manner that the protecting wall should be positioned adjacently to and should keep a gap toward the ceramic circuit board which is attached to the back face of the focus unit in an exposed state. That is, a protecting wall (6) is formed integrally with the FBT case (5) and on the coupling portion 4 for the focus unit (2) and adjacently to the ceramic circuit board (1), so that a tiny space (S) would be formed. A small amount of a hard insulating resin (3) is filled into the tiny space S between the protecting wall and the ceramic circuit board (1), and the resin (3) is made to be cured, so that internal coils of the FBT case (5) would be insulated. Therefore, an injection of a soft insulating resin for preventing a damage to the ceramic circuit board becomes needless. Consequently, the workability is improved, and at the same time, the focus unit is firmly coupled to the FBT case without damaging the ceramic circuit board of the focus unit. Further, a small amount of the hard insulating resin is filled and cured, and therefore, the focus unit is firmly coupled to the FBT case.

REFERENCES:
patent: 3879726 (1975-04-01), Sweany
patent: 4195201 (1980-03-01), Gryl, Jr. et al.
patent: 5153791 (1992-10-01), Mizukami et al.
patent: 5412159 (1995-05-01), Wiltgen et al.
patent: 5546280 (1996-08-01), Hasebe et al.

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