High voltage connector

Details High voltage connector High voltage connector

1998-11-20

2001-02-13

Bradley, Paula (Department: 2833)

Electrical connectors

With coupling movement-actuating means or retaining means in...

Retaining means

C439S352000

Reexamination Certificate

active

06186818

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a high-voltage connector and in particular to a high-voltage connector for use in a flyback transformer.
DESCRIPTION OF PRIOR ART
Referring to
FIG. 1
a
, a conventional high voltage connector for use in a flyback transformer includes an inner sleeve
3
and an outer sleeve
1
protruded from a casing
15
of a flyback transformer (not shown). A high voltage lead wire
2
is fitted in and fixed onto the inner peripheral surface of the inner sleeve
3
so that when the inner sleeve
3
is fitted in the outer sleeve
1
, the bottom end of the high voltage lead wire
2
is connected to a coil (not shown) in the casing
15
. As can be seen from
FIG. 1
a
, the inner sleeve
3
has a circular flange
33
formed on its top end surface, a long protrusion
32
formed along its longitudinal axis on the outer peripheral surface thereof and a long protrusion
31
formed horizontally on the outer peripheral surface thereof. The outer sleeve
1
includes a vertical cut formed from its top end surface
12
along its longitudinal axis and a horizontal cut
14
extended from the bottom end of the vertical cut
13
. The inner sleeve
3
and the outer sleeve
1
are both made of plastics. In the assembly of the high voltage connector, the inner sleeve
3
is inserted and pressed into the outer sleeve
1
so that the long protrusion
32
is moved in the vertical cut
13
, thereby bringing the protrusion
31
into engagement with the horizontal cut
14
with the circular flange
33
abutting the top end surface
12
of the inner sleeve
3
, as shown in
FIG. 1
b.
This conventional arrangement has the advantage of easy assembling; however, it has the following problems. The vertical cut
13
is cut from the top end surface
12
of the outer sleeve
1
, making the top end surface
12
discontinuous, and thus the tensile strength of the outer sleeve
1
is reduced. Breakage of the high voltage connector may occur when the inner sleeve
3
is pressed in the outer sleeve
1
. Also, no guiding means is provided on the outer sleeve
1
, and thus it may be difficult to align the protrusion
32
with the vertical cut
13
in the assembly operation, resulting in defective items.
SUMMARY OF THE INVENTION
It is therefore an object of the invention to provide a high voltage connector which can eliminate the above prior art problems.
To this end, according to the invention, there is provided a high voltage connector for connecting a lead wire to a high voltage device, including: an inner sleeve having a bore for receiving and fixing the lead wire and a protrusion formed on the outer peripheral surface thereof; and an outer sleeve disposed on the high voltage device, having a bore for receiving the inner sleeve and a hole formed on the outer peripheral surface thereof for engaging with the protrusion of the inner sleeve. The hole of the outer sleeve is not a cut from the top end surface thereof and thus the end surface is not discontinuous; thereby, the tensile strength of the outer sleeve is not reduced. The outer sleeve also includes a guiding means for guiding the protrusion of the inner sleeve; thereby, the assembling operation is easier.
According to an aspect of the invention, there is also provided a high voltage connector for connecting a lead wire to a high voltage device, including: an inner sleeve having a bore for receiving and fixing the lead wire, a hole formed on the outer peripheral surface thereof; and an outer sleeve disposed on the high voltage device, having a bore for receiving the inner sleeve, a protrusion disposed on the inner peripheral surface thereof for engaging with the hole of the inner sleeve. The hole is formed on the outer peripheral surface of the inner sleeve and the protrusion is formed on the inner peripheral surface of the outer sleeve, and thus the outer sleeve is not easily broken when the inner sleeve is pressed into and engaged with the outer sleeve. The inner sleeve is also provided with a protrusion for receiving a guiding groove formed on the inner peripheral surface of the outer sleeve. Alternatively, the guiding groove can be provided on the outer peripheral surface of the inner sleeve for receiving a protrusion formed on the inner peripheral surface of the outer sleeve.


REFERENCES:
patent: 5403199 (1995-04-01), Mobley et al.
patent: 5711684 (1998-01-01), Inoue et al.

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