Electrical connectors – With circuit conductors and safety grounding provision – Grounding to conductive sheath of cable
Reexamination Certificate
2000-03-03
2001-07-17
Nguyen, Kheim (Department: 2839)
Electrical connectors
With circuit conductors and safety grounding provision
Grounding to conductive sheath of cable
C439S098000
Reexamination Certificate
active
06261108
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a shield connector.
FIGS. 10 and 11
show an example of a conventional shield connector disclosed in the Unexamined Japanese Patent Application No. Hei 11-26093. This shield connector includes a rubber ring
2
, a holding ring
3
, a conductive sleeve
4
and a pressing ring
5
within a cylindrical resin housing
1
. A shield wire
10
is passed through these elements and attached thereto. A conductive contact piece
6
is disposed on the outer peripheral surface at the front end of the resin housing
1
in a manner that the conductive contact piece is electrically coupled to the shield layer
13
of the shield wire
10
through the conductive sleeve
4
. A flange
7
formed at the resin housing
1
so as to expand therefrom is pressed and bolted to the opening edge of an attachment hole formed at the shielding wall of a not-shown electric device. Thus, the conductive contact piece
6
is electrically connected to the inner peripheral surface of the attachment hole, whereby the shielding wall and the shielding layer are electrically connected.
However, the thus configured conventional shield connector includes six parts even as to basic constituent elements thereof (that is, the aforesaid parts depicted by the reference numerals
1
to
6
) and the total number of the parts of the shield connector including fine parts other than such basic constituent elements is too much as shown in FIG.
11
. Thus, the conventional shield connector has a problem that the number of assembling process is large and the cost thereof is expensive.
SUMMARY OF THE INVENTION
The present invention has been made in view of the aforesaid circumstances and an object of the present invention is to provide a shield connector having small number of parts.
<Invention of Aspect 1>
The shield connector according to the invention as in aspect 1 is arranged in a manner that in the shield connector which covers a shield layer exposed at an end portion of a shield wire thereby to be fixed to the shield wire and is attached to a partner-side shield wall thereby to electrically connect the shield layer and the partner-side shield wall, the shield connector comprises:
a conductive flange having electrically conductive property and attached to the partner-side shield wall;
a conductive cylindrical portion provided at the conductive flange in a conductive manner and fitted on an inner or outer peripheral side of the shield layer being exposed thereby to be electrically connected to the shield layer; and
a housing fixed to the shield wire and holding the conductive flange.
According to the invention, since the flange to be fixed to the partner-side shield wall is made conductive and the shield layer is electrically connected to the conductive flange through the conductive cylindrical portion, the configuration for electrically connecting the shield layer and the partner-side shield wall can be simplified and the number of parts of the shield connector can be reduced.
<Invention of Aspect 2>
The invention of aspect 2 is arranged in the arrangement of aspect 1, wherein the conductive cylindrical portion is provided with an auxiliary sleeve to sandwich the shield layer therebetween.
According to such a configuration, since the shield layer is sandwiched between the conductive cylindrical portion and the auxiliary sleeve, the shield layer can be surely electrically connected to the conductive cylindrical portion.
<Invention of Aspect 3>
The invention of aspect 3 is arranged in the arrangement of aspect 1 in a manner that the conductive cylindrical portion and the shield layer are joined by a fusing process, whereby the shield layer can be surely electrically connected to the conductive cylindrical portion.
<Invention of Aspect 4>
The invention of aspect 4 is arranged in the arrangement of one of aspects 1 to 3 in a manner that the housing is formed in a manner that, in a state where the shield wire is disposed within a die for resin molding, resin in a melted state is filled within the die.
<Invention of Aspect 5>
The invention of aspect 5 is arranged in the arrangement of aspect 4 in a manner that, at an inner peripheral side of a rear end portion of the housing, there is provided with a waterproof cylindrical portion which is formed by molding synthetic resin which is softer than the housing on an outer peripheral surface of the shield wire before forming the housing.
According to such a configuration, since the waterproof cylindrical portion which is softer than the housing is closely in contact with the housing and the shield wire, the rear end portion of the housing is subjected to the waterproof processing.
<Invention of Aspect 6>
The invention of aspect 6 is arranged in the arrangement of aspect 4 or 5 in a manner that a resin flowing hole for passing resin in the melted state therethrough is formed at the conductive flange so as to penetrate it.
According to such a configuration, when the resin in a melted state is filled within the die for resin molding in the state where the shield wire to which the conductive flange is attached is disposed within the die, the resin in the melted state passes through the resin flowing hole formed at the conductive flange, whereby the front side and the rear side of the housing sandwiching the conductive flange therebetween are simultaneously formed.
REFERENCES:
patent: 5691506 (1997-11-01), Miyazaki
patent: 198 29 291 A1 (1999-02-01), None
patent: 11-026093 (1999-01-01), None
Kanagawa Shuichi
Nozaki Takao
Sano Ichiaki
Harness System Technologies Research Ltd.
Nguyen Kheim
Oliff & Berridg,e PLC
Prasad Chaudrika
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