Core member for winding

Details Core member for winding Core member for winding

2003-02-07

2004-08-17

Mai, Anh (Department: 2832)

Inductor devices

Core forms casing

C336S065000, C336S208000

Reexamination Certificate

active

06778055

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electric winding and, more specifically, to a core member for winding, which has a high structural strength and, supports the lead ends of the enameled wires positively in position, preventing a short circuit between two enameled wires.
2. Description of the Related Art
FIG. 1
illustrates a core member for winding according to the prior art. As illustrated, the core member has a main body
1
′ and two end flanges
2
′ and
3
′ at the ends of the main body
1
′. The end flanges
2
′ and
3
′ each have two upright legs
21
′ and
22
′;
31
′ and
32
′ bilaterally disposed at the top and spaced by a gap
4
′ or
5
′. Further, electrodes
211
′,
221
′,
311
′, and
321
′ are fixedly located on the upright legs
21
′ and
22
′;
31
′ and
32
′ at the top. Referring also to
FIG. 2
, a first enameled wire
6
′ and a second enameled wire
7
′ are respectively wound round the main body
1
′, and electrically connected to the electrodes
211
′,
221
′,
311
′, and
321
′. The lead ends of the first enameled wire
6
′ are respectively soldered to the electrodes
211
′ and
321
′. The lead ends of the second enameled wire
7
′ are respectively soldered to the electrodes
221
′ and
311
′. This design of core member for winding has drawbacks. The structural strength of the upright legs
21
′ and
22
′;
31
′ and
32
′ are weak. The upright legs
21
′ and
22
′;
31
′ and
32
′ may break easily when hit by an external object. Further, because the lead ends of the first enameled wire
6
′ are respectively suspended between the main body
1
′ and the respective electrodes
211
′ and
321
′, they tend to be forced to displace by an external force. If the insulation of the enameled wires
6
′ and
7
′ are broken, a displacement of the first enameled wire
6
′ may cause a short circuit.
SUMMARY OF THE INVENTION
The present invention has been accomplished under the circumstances in view. It is one object of the present invention to provide a core member for winding, which has a strong structural strength. It is another object of the present invention to provide a core member for winding, which supports the lead ends of installed enameled wires positively in position, preventing a short circuit between installed enameled wires. To achieve these and other objects of the present invention, the core member comprises a main body and two end flanges at two ends of the main body, the end flanges each having two upright legs bilaterally disposed at a top side and spaced by a gap, the upright legs each having a top side fixedly mounted with an electrode, wherein the end flanges each have a step vertically upwardly protruded from the elevation of the topmost edge of the main body to a predetermined height; the upright legs extend vertically upwardly from the steps of the end flanges in an offset position, each having a vertical inner side spaced from a vertical inner side of the respective step at a distance. The steps reinforce the structural strength of the upright legs, and enable the lead ends of the first enameled wire to be firmly supported in position at three bearing points.


REFERENCES:
patent: 6154112 (2000-11-01), Aoba et al.
patent: 6223419 (2001-05-01), Abramov
patent: 6348850 (2002-02-01), Kimura et al.
patent: 6373366 (2002-04-01), Sato et al.
patent: 6449830 (2002-09-01), Amada et al.
patent: 6522230 (2003-02-01), Hanato et al.
patent: 6535095 (2003-03-01), Aoki et al.

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