Electrical connectors – Electromagnetic or electrostatic shield – Shielding individually surrounding or interposed between...
Reexamination Certificate
1999-03-17
2001-03-20
Abrams, Neil (Department: 2839)
Electrical connectors
Electromagnetic or electrostatic shield
Shielding individually surrounding or interposed between...
C439S585000, C439S593000
Reexamination Certificate
active
06203372
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a connecting structure for a metallic shielding member which shields electric noises is and ensures good contact between a male metallic shielding member and a female metallic shielding member.
2. Description of the Prior Art
FIGS. 9
to
11
show a conventional shielded connector as proposed in the Japanese Patent Application Laid-Open No. Hei 7-245153.
A female side connector
19
shown in
FIG. 9
comprises a female connector housing
17
made of synthetic resin, a female side metallic shielding member
3
and a male terminal
25
. The female connector housing
17
has a cylindrical inner housing
27
at an inside of an outer housing
26
through a coupling portion
28
. An annular shield inserting gap
29
is formed between the outer housing
26
and the inner housing
27
, an inserting hole
30
toward a contacting elongation
4
in the leading edge direction of the metallic shielding member
3
is formed at the coupling portion
28
.
The metallic shielding member
3
is a cylindrical form, and the contacting elongation
4
divided four-part is provided at the leading edge of the cylindrical portion
31
. Each of the contacting elongations
4
is adjacent to each other through a wide slit
15
. An engaging piece
33
toward a connecting recess
32
of the inner housing
27
is formed at the inside of the contacting elongation
4
. A bottom end
15
a
of the slit
15
comes into contact with a rear end of the coupling portion
28
.
A male terminal
25
is arranged within the metallic shielding member
3
, and the male terminal
25
is connected to a shielded electric wire
34
. A base
35
of the metallic shielding member
3
is connected to a shield conductor
36
of the shielded electric wire
34
.
Moreover, a male side connector
37
shown in
FIG. 10
is composed of a male connector housing
12
, male side metallic shielding member
38
and a female terminal
39
, according to an engagement between both connectors
19
and
37
, the male side metallic shielding member
38
is inserted into the female side metallic shielding member
31
at the same time that a male terminal
25
and a female terminal
39
are connected to each other.
The male connector housing
12
has an annular shield insertion gap
20
between an outer housing
13
and an inner housing
14
the same as above description. The male side metallic shielding member
38
has a contacting elongation for contacting
42
divided into four part by a slit
41
at the leading edge of a cylindrical part
40
. The contacting elongation
42
projects forward from the insertion hole
22
of the coupling portion
21
between the inner housing
14
and the outer housing
13
through the shield insertion gap
20
. An engaging piece
43
on the inside of the cylindrical portion
40
engages with a connecting groove
16
of the inner housing
14
at the same time of the above projection of the contacting elongation
42
.
FIG. 11
shows a connecting condition of both of metallic shielding members
3
,
38
. Four pieces of the contacting elongations
4
,
42
of each of metallic shielding members
3
,
38
come into contact with each other with made overlapping alternately on the other side slits
41
,
15
.
However, in the above conventional connecting structure of the metallic shielding member, at the beginning of connecting both of the contacting elongation
4
,
42
are coming into closely contact with each other, there are some apprehensions that it becomes susceptible to be generated bad contact since a contacting pressure between both contacting elongations
4
,
42
get weak with time in that the contacting elongations
4
,
42
wear away according to vibration of the vehicle and so force or the male side contacting elongation
4
is forced to deform with opened outward.
SUMMARY OF THE INVENTION
In view of the foregoing, it is an object of the present invention to provide a connecting structure for a metallic shielding member which can prevent an occurrence of bad contact thereof even if the vehicle vibrates.
According to the first aspect of the present invention, for achieving the above-mentioned object, there is provided a connecting structure for a metallic shielding member in which a contacting elongation in a leading edge direction of a cylindrical male metallic shielding member is forced to come into contact with a mating contacting elongation in a leading edge direction of a cylindrical female metallic shielding member wherein a pair of engaging hook pieces toward the contacting elongation of the metallic shielding member on one side are formed at the contacting elongation of the metallic shielding member on the other side. It is also possible in the above described structure wherein the pair of engaging hook pieces are formed at both sides of the slit provided between the adjacent contacting elongations with each other.
According to the second aspect of the present invention there is provided a connecting structure for a metallic shielding member in which it causes a connector equipped with the male side metallic shielding member and a mating connector equipped with the female side metallic shielding member to engage with each other, while coming into contact with the contacting elongations in the leading edge direction of both metallic shielding members mutually wherein a pressing spring portion which permits the contacting elongation either of the metallic shielding members to energize toward the mating contacting elongation of the other metallic shielding member is provided for at least a housing of the connector on one side.
According to the third aspect of the present invention there is provided a connecting structure for a metallic shielding member in which a contacting elongation in a leading edge direction of a cylindrical male metallic shielding member equipped with a male connector is forced to come into contact with a mating contacting elongation in a leading edge direction of a cylindrical female metallic shielding member equipped with a female connector wherein a contacting projection is formed at the contacting elongation of the metallic shielding member on one side, said contacting projection comes into contact with the mating contacting elongation of the metallic shielding member on the other side in case of engagement between the male connector and the female connector. It is also possible in the above described third aspect wherein an enlarged diameter portion is provided for the contacting elongation of the female side metallic shielding member whereby contacting projection is forced to come into contact with contacting elongation at the enlarged diameter portion.
As stated above, the contacting structure for the metallic shielding member according to the first aspect of the present invention is provided with the contacting elongation of the female side metallic shielding member joining and making overlapping to the mating contacting elongation of the male side metallic shielding member at the same time of engagement for both connectors. At this time, the contacting elongation (for example female side) on one side is inserted into the gap between a pair of engaging hook pieces, and is maintained with joined to the peripheral surface of the contacting elongation (for example male side) on the other side by means of the engaging hook piece.
Further, the contacting structure for the metallic shielding member according to the second aspect of the present invention there is provided the pressing spring portion which causes the contacting elongation of the metallic shielding member on one side to join with pressurized to the contacting elongation of the metallic shielding member on the other side at the same time of engagement for both connectors.
Furthermore, the contacting structure for the metallic shielding member according to the third aspect of the present invention there is provided the contacting projection in which each contacting elongation of both metallic shielding members is certainly connected by virt
Hamaguchi Takeyuki
Katoh Hisaharu
Kuboshima Hidehiko
Masuda Satoki
Matsumoto Mitsuhiro
Abrams Neil
Arent Fox Kintner Plotkin & Kahn
Yazaki -Corporation
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