Electrical connectors – Electromagnetic or electrostatic shield – Shielding individually surrounding or interposed between...
Reexamination Certificate
2000-12-06
2002-04-02
Paumen, Gary F. (Department: 2833)
Electrical connectors
Electromagnetic or electrostatic shield
Shielding individually surrounding or interposed between...
C439S939000
Reexamination Certificate
active
06364707
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a ground piece of an electric connector, and especially to a ground piece used to a connector of a universal serial bus with double seat.
BACKGROUND OF THE INVENTION
With the improvement of computer science, the connectors of universal series bus (USB) are necessary elements. In general, they are used in interfaces for connecting a keyboard or a mouse to a main frame. The double seat connector is modified from the single seat connector and is employed to be connected with two connectors at the same time. Moreover, the double seat connectors has various applications instead of merely being used in a keyboard or a mouse. In the prior art, a double seat stacked connector
2
a
is not connected with the housing
1
a
of the mainframe. As illustrated in
FIG. 1
, only a retaining piece
11
a
is installed on the back plate of the mainframe. The retaining piece
11
a
serves to position all the connectors of interfaces. The retaining piece is made according to the specification for designing a connector. The most original way is to be formed with a square hole
12
a
. The inner diameter of the square hole
12
a
is slightly smaller than the size of the periphery of a connector. A retaining strip
13
a
is transversally installed in the middle portion of the square hole
12
a
of the retaining piece
11
a
. Initially, the retaining strip
13
a
has an effect of positioning so that the connector
2
a
installed in the housing
1
a
can not be pulled out from the square hole
12
a
. While a plug type connector matched the housing must pass through the square hole
12
a
of the mainframe retaining piece
11
a
. The plug type connector is inserted into a receptacle type connector so that the matched connector can be assembled and matched. Since the connector has double seats, large pulling and inserting forces generates. In order to consider the electromagnetic interference, the interference electromagnetic wave must be cancelled. Therefore, a metal isolating piece must be placed at a middle portion of a double seat connector as a spacer for reducing the interference therebetween.
As shown in
FIG. 1
, a prior art is illustrated. A protrusion is formed for being connected to the retaining strip
13
a
of the retaining piece, so that the electromagnetic interference generated in two connecting modules is directly transferred to the housing
1
a
. The connector
2
a
has an insulating seat
22
a
and a metal casing
21
a
. The insulating seat
22
a
has a terminal set at an upper half and a terminal set at a lower half (not shown). The insulating seat
22
a
is inserted into the metal casing
21
a
. A positioning structure is positioned between the insulating seat
22
a
and the metal casing
21
a
. The positioning structure has no relation to the present invention and thus, the detail will not be described further. A transverse spacer extending forwards is installed at a middle portion of the insulating seat
22
a
(referring to FIG.
3
). By the spacer, the insulating seat
22
a
is divided into an upper chamber
23
at the upper half and a lower chamber
24
a
at the lower half. Each chamber is provided with a space for combining with a matched connector. A metal clip piece
25
a
is inserted into the insulating seat
22
a
. The metal clip piece
25
a
has a
shape. Two ends of the metal clip piece
25
a
are inserted into the metal casing
21
a
. Meanwhile, two lateral sides of the metal clip piece
25
a
are inserted with respective hooks
26
a
for being buckled to the retaining hole
27
a
of the housing
21
a
. The inserting edges of the metal clip piece
25
a
each have a hook (not shown) for being inserted into the buckling groove (not shown) of the insulating seat.
A transverse portion from the folded two ends of the clamping piece
25
a
covers the outer surface of the spacer. Namely, two ends of the clamping piece are adhered to the upper and lower two lateral surfaces of the spacer. Therefore, the aforesaid positioning structure serves to fix the clamping piece
25
a
to the housing
21
a
and therefore, a pair of outer folded pieces
28
a
which are opposite and punched outwards are installed on the transverse portion of the clamping piece
25
a
. Therefore, the outer folding pieces
28
a
are in contact with the retaining piece
13
a
so that the outer folding piece
28
a
has an effect of grounding. However, since the outer folded piece
28
a
only contacts the retaining piece
13
a
by a tip portion thereof, as it is used for a long time, it will fatigue and deformed by pressure so that the outer folded piece loses the function of grounding.
SUMMARY OF THE INVENTION
Accordingly, the primary object of the present invention is to provide a grounding device of an electric connector, ground pieces more flexibly and steadily are used extra auxiliary ground structure. Thereby, the resisting portion obliquely extended and having a plane shape is in contact with a housing so that the ground piece is connected to the housing in a surface contact way. The contact area is sufficient. Consequently, the ground piece is substantially guided and can be used for a longer time with fatigue in elasticity. A steady combination is formed with the housing. Even a matched connector is in a pulling away condition, it can acquire an inverse holding force so that the connector can be protected well and provides a well application.
To achieve the object, the present invention provides a grounding device of an electric connector is disclosed. An insulating seat is installed with a plurality of terminals and is installed with a spacer. A housing encloses the insulating seat and made of metal material. A clamping piece has a
shape and is made of metal material. The clamping piece is positioned to the spacer and the housing. Two sides of a meddle connecting piece of the clamping piece each are protruded with a combining portion. A pair of ground pieces has a T shape with one end being a retainer and another two ends being resisting portions. The retainer is inserted into the middle connecting piece of the clamping piece. A punched buckling portion is formed on the retainer near the resisting portion. Thereby, the combining portion is inserted into a hollow chamber in the buckling portion and is pressed and thus fixed therein. Between the buckling portion of the retainer and the resisting portion is formed with an oblique extended bending portion. The resisting portion of the ground piece is parallel to the middle connecting piece of the clamping piece.
The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.
REFERENCES:
patent: 4906201 (1990-03-01), Young et al.
patent: 6074222 (2000-06-01), Kuo
patent: 6113428 (2000-09-01), Yeh
patent: 6132253 (2000-10-01), Wu
patent: 6139367 (2000-10-01), Yeh
patent: 6168448 (2001-01-01), Chang
Paumen Gary F.
Rosenberg , Klein & Lee
LandOfFree
Grounding device of an electric connector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Grounding device of an electric connector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Grounding device of an electric connector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2825714