Electrical connectors – Metallic connector or contact having movable or resilient... – Spring actuated or resilient securing part
Reexamination Certificate
2003-11-28
2004-08-31
Gushi, Ross (Department: 2833)
Electrical connectors
Metallic connector or contact having movable or resilient...
Spring actuated or resilient securing part
C439S700000, C324S754090
Reexamination Certificate
active
06783405
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a terminal for electric connector for communication and, more particularly, to such a terminal that easily positively be positioned in the connector housing for signal transmission without producing much impedance.
2. Description of the Related Art
Communication apparatus are important implement for communication among people at distance. Advanced communication apparatus commonly have a small size with high transmission power. For a compact communication apparatus, the component parts and terminals must be made relatively smaller.
FIG. 1
shows a terminal for electric connector for communication apparatus according to the prior art. According to this design, the terminal, referenced by
100
, is stamped from a metal sheet member, comprising a protruding contact portion
102
disposed at one end, a mounting plate portion
10
disposed at the other end, a spring coil portion
101
connected between the protruding contact portion
102
and the mounting plate portion
10
, a bonding tip
10
b
extended from the bottom side of the mounting plate portion
10
for soldering to a circuit board, and two hooks
10
a
protruding from two opposite lateral sides of the mounting plate portion
10
. During installation, the terminal
100
is inserted into the receiving chamber
21
of an electrically insulative housing
20
for electric connector to force the hooks
10
a
into engagement with the inside wall of the housing
20
(see FIG.
1
A). When installed, the protruding contact portion
102
extends out of the front opening of the housing
20
for contact. This design of terminal
100
for electric connector is still not satisfactory in function. Due to weak structural strength, the terminal
100
tends to be permanently deformed or damaged during installation of the electric connector (see FIG.
1
B).
FIG. 2
shows another structure of terminal for electric connector according to the prior art. This design of terminal is similar to that shown in
FIG. 1
with the exception of the two additional parallel side guide strips
103
that are bilaterally extended from the top side of the mounting plate portion
10
in direction reversed to the bonding tip
10
b
and spaced from the spring coil portion
101
at two sides. This structure of terminal is still not satisfactory in function because the protruding contact portion
102
tends to be biased, affecting signal transmission quality. Further, in order to reduce impedance produced during signal transmission, beryllium copper is used for making the terminal. However, a terminal of beryllium copper is relatively expensive.
Therefore, it is desirable to provide a terminal for electric connector for communication apparatus that eliminates the drawbacks of the aforesaid prior art designs.
SUMMARY OF THE INVENTION
The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a terminal for electric connector for communication apparatus, which is durable in use. It is another object of the present invention to provide a terminal for electric connector for communication apparatus, which has low impedance. It is another object of the present invention to provide a terminal for electric connector for communication apparatus, which is inexpensive to manufacture. To achieve these and other objects of the present invention, the terminal is directly stamped from a phosphor bronze sheet member, having protruding contact portion disposed at one end, a mounting plate portion disposed at the other end, and two spring coil portions symmetrically bilaterally supported between the protruding contact portion and the mounting plate portion.
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Chuan Yi Precision Industry Co., Ltd.
Gushi Ross
Rosenberg , Klein & Lee
Tsukerman Larisa
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