Electrical connectors – Electromagnetic or electrostatic shield – Shielding individually surrounding or interposed between...
Reexamination Certificate
1998-10-21
2001-10-02
Vu, Hien (Department: 2833)
Electrical connectors
Electromagnetic or electrostatic shield
Shielding individually surrounding or interposed between...
C439S851000
Reexamination Certificate
active
06296519
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a shielded connector for shielding electromagnetic waves used in an electric car or the like. More particularly, the present invention relates to a shielded connector in which the configuration of the contact portion contacting with a partner-side shield contact portion is contrived.
The present application is based on Japanese Patent Application No. Hei. 9-288669, which is incorporated herein by reference.
2. Description of the Related Art
FIG. 6
shows a male side shielded connector
45
and a female side shielded connector
46
which are similar to conventional shielded connectors disclosed by Unexamined Japanese Patent Publication No. Hei. 8-241763.
The respective shielded connectors
45
,
46
include connector housings
47
,
48
made of synthetic resin, metal shells
49
,
50
housed within the connector housings
47
,
48
, and terminals
51
,
52
positioned within the metal shells
49
,
50
, respectively.
The connector housings
47
,
48
include inner housings
53
,
54
and outer housings
55
,
56
, respectively. The metal shells
49
,
50
are disposed along the outer sides of the inner housings
53
,
54
, respectively. At the tip end sides of the metal shells
49
,
50
, slit-shaped notch portions
57
,
58
are formed and further circumferentially arc-shaped projection plate portions
59
,
60
are formed adjacent to the notch portions
57
,
58
, respectively. The projection plate portions
59
,
60
protrude to the connector attachment direction through the spaces between the outer housings
55
,
56
and the inner housings
53
,
54
, respectively.
The rear end portions of the metal shells
49
,
50
are coupled to braided wires
63
,
64
of shielded electric wires
61
,
62
, respectively. The terminals
51
,
52
are coupled to the tip portions of the shielded electric wires
61
,
62
through caulking process, respectively. The shielded electric wires
61
,
62
are drawn to the rear sides of the connector housings
47
,
48
, respectively.
Both the shielded connectors
45
,
46
are attached together and, simultaneously, both the metal shells
49
,
50
are attached and connected together. The projection plate portion
59
of one of the metal shells, that is, the metal shell
49
covers the notch portion
58
of the other metal shell
50
, and the other projection plate portion
60
is inserted into the inside of a hook piece
65
of the metal shell
49
. Accordingly, the projection plate portion is prevented from being lifted and the metal shells
49
,
50
are attached tightly. Further, since the terminals
51
,
52
serving as conductive portions are mainly covered by the metal shells
50
,
49
, respectively, the terminals are shielded from electromagnetic wave.
However, the aforementioned conventional arrangement has the following problems. That is, the size of the connector itself becomes larger since the metal shells
49
,
50
are housed within the connector housings
47
,
48
, respectively. Further, because the mounting space for the metal shells
49
,
50
and the extracting direction of the electric wires or the like are restricted, there remains portions which can not be covered by the metal shells
49
,
50
. Further the metal shells
49
,
50
are complicated in their structure and the assembling workability thereof is degraded.
In order to solve the above problems, a shielded connector in which connector housings entirely subjected to the conductive electroplating is employed in place of the metal shells has been proposed by, for example, Unexamined Japanese Patent Publication Nos. Hei. 5-258804 and Hei. 9-8489. In such a shielded connector, the electroplated layer may be removed in the case where prying force is applied at the time of attaching the male and female connectors together and in the case where the connector housings are slid with pressure to each other in order to electrically connect the connector housings.
SUMMARY OF THE INVENTION
In view of the aforementioned problems, an object of the present invention is to provide a shielded connector which can prevent the enlargement of the size of the connector itself and the degradation of the assembling workability of the metal shell etc., and also prevent the removal of the electroplated layer and the degradation of electric contact performance in the electroplated connector housings.
In order to achieve the aforementioned object, according to the present invention, there is provided a shielded connector which comprises: a connector housing subjected to conductive electroplating, the connector housing including a housing chamber; and a conductive shield ring, into which a shield contact portion of a partner-side shielded connector is insertable, fitted into the housing chamber, the shield ring contacting with the conductive electroplating of the connector housing.
It is also effective that the above shielded connector further comprises a conductive shield contact fittable to an inside of the shield ring, the shield contact contacting with the shield contact portion of the partner-side shielded connector when the shield contact portion of the partner-side shielded connector is inserted into the shield ring. It is also effective that the shield contact has resilient contact pieces. It is also effective that the shield contact is slidable in a predetermined range within the shield ring.
Furthermore, it is also effective that the shield contact has an annular shape, and includes a split portion providing resilience to the shield contact in a direction to which a diameter of the shield contact expands. It is also effective that the shield contact and the shield ring include locking mechanisms, respectively. It is also effective that a pressure-insertion space is formed within the housing chamber, and a pressure insertion portion for the pressure-insertion space is formed on the shield ring.
REFERENCES:
patent: 4239318 (1980-12-01), Schwartz
patent: 4426127 (1984-01-01), Kubota
patent: 4720157 (1988-01-01), Nestor et al.
patent: 4749357 (1988-06-01), Foley
patent: 4983127 (1991-01-01), Kawai et al.
patent: 5035650 (1991-07-01), Dijihaugh et al.
patent: 5055055 (1991-10-01), Bakker
patent: 5509823 (1996-04-01), Harting et al.
patent: 5932841 (1999-08-01), Matsumoto et al.
patent: 5-258804 (1993-10-01), None
patent: 8-241763 (1996-09-01), None
patent: 9-8489 (1997-01-01), None
Asahi Toshio
Hashizawa Shigemi
Kuboshima Hidehiko
Ohe Junzo
Sughrue Mion Zinn Macpeak & Seas, PLLC
Vu Hien
Yazaki -Corporation
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