Shield connector

Electrical connectors – Including or for use with coaxial cable – Adapted to secure cables perpendicular to one another or a...

Reexamination Certificate

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Details

C439S098000

Reexamination Certificate

active

06419521

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a shield connector provided at an end portion of a shield wire and installed in a through hole, which is formed in a mating shield wall, and to a manufacturing method therefor.
2. Description of the Related Art
An example of such a kind of conventional shield connector printed in JP-A-11-26093 has a straight cylindrical housing
1
that accommodates a rubber ring
2
, a holding ring
3
, an electrically conductive sleeve
4
, and a pressure ring
5
, as shown in
FIGS. 8 and 9
. Further, this shield connector is configured so that a conductive contact piece
6
is disposed on the front outer circumferential surface of the housing
1
. Moreover, the housing
1
is attached to the sleeve
4
in such way as to cover an end portion of a shield wire
10
. A front-side part, which is farther forward than a flange, of the housing
1
is fitted into a through hole formed in a mating shield wall. Furthermore, apart of the flange is screwed to the mating shield wall by bolts (not shown).
Meanwhile, sometimes, a shield wire should be installed in such a manner as to extend in parallel with the mating shield wall owing to limitations of space. However, the aforementioned conventional shield connector cannot have a structure that enables such installing of shield wires. Conversely, for example, when the cylindrical housing
1
is simply bent like a letter L and further, a shield wire in the housing, the size of the entire shield connector increases due to limitations of an allowable bending radius.
Further, the conventional shield connector has no less than six fundamental components (indicated by the characters
1
to
6
). Thus, as is seen from
FIG. 9
, the conventional shield connector has a very large number of components that include small ones in addition to the six fundamental ones. Therefore, even when the configuration of the conventional shield connector is simply modified, the size thereof increases.
SUMMARY OF THE INVENTION
The invention is accomplished in view of the aforementioned circumstances. Accordingly, an object of the invention is to provide a shield connector enabled to install a shield wire in such a way as to extend in parallel with the mating shield wall, and also enabled to be miniaturized.
To achieve the foregoing object, according to an aspect of the invention, there is provided a shield connector (hereunder referred to as a first shield connector), which is adapted so that a base-side portion of a terminal fitting press-attached to a conductor of a shield wire is accommodated in a housing covering an end portion of the shield wire, and which is provided in a through hole formed in a mating shield wall so that a shield layer of the shield wire is electrically conducted and connected to said mating shield wall, and that a conductor of the shield wire is maintained in a condition where a tip-side portion of the terminal fitting is plunged into the mating shield wall. This shield connector comprises a flat plate portion formed in such a way as to continuously extend from the portion, which is press-attached to the conductor, of the fitting. Further, the entirety of the terminal fitting is L-shaped by bending the flat plate portion. The shield connector further comprises an insulating member that is adapted to cover a part, which extends from the base-side portion to a place near to the tip-side portion, of the terminal fitting, and a shield member that is provided in the housing and adapted to cover an outer surface of the insulating member covering the terminal fitting. In the shield connector, an end of the shield member is continuously connected or electrically conducted to the shield layer of the shield wire, while the other end thereof is disposed at a portion, which abuts against the mating shield wall, of said housing.
In an embodiment (hereunder referred to as a second shield connector) of the first shield connector of the invention, the insulating member covering the terminal fitting is constituted by a heat-contractive insulating tube or by applying a molten insulating resin onto the terminal fitting.
In an embodiment (hereunder referred to as a third shield connector) of the first or second shield connector of the invention, the housing is formed by filling a resin-forming mold, into which the shield wire is inserted, with a synthetic resin.
In an embodiment (hereunder referred to as a fourth shield connector) of the third shield connector of the invention, an electrically conducting flange produced by forming a terminal insertion hole in an electrically conducting member in such a manner as to penetrate therethrough is disposed in the mold together with the shield wire. Moreover, the terminal fitting is inserted into the terminal through hole in such a way as to penetrate therethrough. Furthermore, one of the ends of the shield member is connected to the electrically conducting flange. Further, the housing is formed by the synthetic resin filled in the mold.
According to another aspect of the invention, there is provided a shield connector (hereunder referred to as a fifth shield connector), which is adapted so that a base-side portion of a terminal fitting press-attached to a conductor of a shield wire is accommodated in a housing covering an end portion of the shield wire, and which is provided in a through hole formed in a mating shield wall so that a shield layer of the shield wire is electrically conducted and connected to the mating shield wall, and that a conductor of the shield wire is maintained in a condition where a tip-side portion of the terminal fitting is plunged into the mating shield wall. In this shield connector, the entire terminal fitting is L-shaped by bending a flat plate portion of the fitting in such a way as to continuously extend from the portion, which is press-attached to the conductor, of the fitting in a direction orthogonal to the shield wire. Moreover, apart of the fitting, which extends from the base-side portion to the tip-side portion thereof, is covered with a heat-contractive insulating tube or by applying a molten insulating resin onto the terminal fitting.
The housing is formed like a letter L by an electrically conducting synthetic resin filled in a resin-forming mold, into which the shield wire is inserted, in a state, in which the shield layer is exposed, in such a manner as to be mated with the terminal fitting.
In an embodiment (hereunder referred to as a sixth shield connector) of the fifth shield connector of the invention, a metallic ring is press-attached to the exposed shield layer of the shield wire. Further, a plurality of protruding pieces are provided in the metallic ring in such a way as to project therefrom and extend sidewardly therefrom. Moreover, the housing is formed by filling a space provided around the metallic ring and the plurality of protruding pieces with an electrically conducting synthetic resin.
According to another aspect of the invention, there is provided a shield connector (hereunder referred to as a seventh shield connector), which is adapted so that a base-side portion of a terminal fitting press-attached to a conductor of a shield wire is accommodated in a housing covering an end portion of said shield wire, and which is provided in a through hole formed in a mating shield wall so that a shield layer of the shield wire is electrically conducted and connected to the mating shield wall. This shield connector comprises a plate portion formed in such a way as to continuously extend from a first press-attaching portion, which is press-attached to the conductor, of the fitting. Further, the entirety of the terminal fitting is L-shaped by bending the plate portion. The shield connector further comprises an insulating member with which the terminal fitting is covered, a shield member adapted to cover an outer surface of the insulating member covering the terminal fitting and provided in the housing so that an end of the shield member is continuously connected or electrically conducted to the shield

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