Rotation coil bobbin for picture tube

Details Rotation coil bobbin for picture tube Rotation coil bobbin for picture tube

Filed on

1998-07-14

Date issued

2001-06-26

Examiner

Mai, Anh (Department: 2832)

Patent Class

Inductor devices

SubClass

Winding with terminals, taps, or coil conductor end...

Other Related Categories

C336S198000

Type

Reexamination Certificate

Status

active

Patent number

06252485

Description

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a rotation coil bobbin for the picture tube of a monitor, and more particularly to such a rotation coil bobbin which has wire holders for holding the lead ends of the coil and the electric wires of an electric power connector being connected to the lead ends of the coil.
FIG. 5
shows a rotation coil bobbin for monitor according to the prior art. This structure of rotation coil bobbin
5
comprises a peripherally grooved annular base
51
, which receives a coil
52
, a plurality of support arms
6
raised from the base
51
at the top, each support arm
6
having a sloping face
621
fitting the curved peripheral wall of the picture tube behind the screen of the monitor, a double-sided heat-resisting adhesive tape
62
fastened to the sloping face
621
of each support arm
6
, a plurality of reinforcing ribs
611
respectively connected between the base
51
and the support arms
6
to reinforce the structural strength of the bobbin
5
, an electric socket
63
fixedly fastened to the base
51
at the top to which the two opposite lead ends of the coil
52
are connected, and an electric plug
624
connected to the socket
63
to provide power supply to the coil
52
. This structure of rotation coil bobbin is functional, however it is expensive to manufacture. Because the manufacturing cost of the socket
63
and the electric plug
624
is high, the cost of the rotation coil bobbin cannot be greatly reduced.
SUMMARY OF THE INVENTION
According to one aspect of the present invention, two wire holders are integral with the top side wall of the bobbin for receiving the lead ends of the coil mounted thereon and the electric wires of the electric power connector being connected to the lead ends of the coil. According to another aspect of the present invention, a hook is raised from an inner side wall of the bobbin for securing the electric wires of the electric power connector in place when the electric power connector is connected to a power supply outlet.


REFERENCES:
patent: 4427962 (1984-01-01), Liberman
patent: 4546340 (1985-10-01), Kuchuris
patent: 4588973 (1986-05-01), Grah et al.
patent: 4672348 (1987-06-01), Duve
patent: 5058821 (1991-10-01), Yamashita
patent: 5883511 (1999-03-01), Foster

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