Top-contacting insertion socket for flat cable

Details Top-contacting insertion socket for flat cable Top-contacting insertion socket for flat cable

2002-06-01

2003-09-16

Paumen, Gary (Department: 2833)

Electrical connectors

Including or for use with tape cable

With mating connection region formed by bared cable

C439S260000

Reexamination Certificate

active

06619979

ABSTRACT:

BACKGROUND OF THE INVENTION
The present invention relates to a top-contacting insertion socket for flat cable, and more particularly to an insertion socket having a top cover that could be upward turned to expose terminal cavities provided in the insertion socket for a flat cable to easily insert thereinto.
Soft flat cables are mainly used in integrated circuit boards to connect different circuits. For this purpose, there are many relatively small insertion sockets provided on the circuit boards for flat cables to insert thereinto. To enable effective contact with bare ends of the flat cable, the insertion socket is normally designed in two ways, namely, a bottom-contacting type as shown in
FIG. 1
, and a top contacting type as shown in FIG.
2
.
Please refer to FIG.
1
. The flat cable
10
has a bare side
11
provided at a lower side thereof to contact with contacts
22
provided on terminals
21
located in the insertion socket
20
. Thus, the insertion socket
20
is a bottom-contacting insertion socket. And, in
FIG. 2
, the flat cable
10
has a bare side
12
provided at an upper side thereof to contact with contacts
32
provided on terminals
31
located in the insertion socket
30
. Thus, the insertion socket
30
is a top-contacting insertion socket.
The bottom-contacting insertion socket
20
includes a cover
23
for compressing the flat cable
10
against the terminals
21
in the insertion socket
20
. The cover
23
is located at a top of the bottom-contacting insertion socket
20
and could be easily opened to expose terminal cavities
24
in the insertion socket
20
to facilitate easy insertion of the flat cable
10
into the terminal cavities
24
.
On the other hand, the top-contacting insertion socket
30
includes a cover
33
having a tongue portion
34
for inserting into the insertion socket
30
to compress the flat cable
10
against the terminals
31
in the insertion socket
30
. Since the cover
33
is located near a bottom of the top-contacting insertion socket
30
to abut on the circuit board
40
and could not be fully opened, an operator is not able to see the terminal cavities
35
in the insertion socket
30
. Moreover, since the cover
33
could not be fully opened, it presses the terminals
31
to cause frictional contact of the terminals
31
with the flat cable
10
when the latter is inserted into the insertion socket
30
. Therefore, it is possible that the flat cable
10
is not fully inserted into the insertion socket
30
due to a resistance from such frictional contact. That is, it is more difficult to properly insert the flat cable
10
into the insertion socket
30
.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide a top-contacting insertion socket for flat cable having a top cover that could be upward turned to expose terminal cavities in the insertion socket to facilitate easy and proper insertion of a flat cable into the insertion socket.
In the top-contacting insertion socket for flat cable according to the present invention, a space is left between an inner top surface of a main body of the insertion socket and internal connecting pins of terminals in the insertion socket for a tongue portion of the top cover to insert thereinto, so that the tongue portion presses the internal connecting pins below it against a bare upper side of the flat cable to provide good electrical contact thereat.
Each of the internal connecting pins of the terminals in the top-contacting insertion socket of the present invention may be provided at a lower side with more than two barbs to provide increased number of pressing points against the flat cable and accordingly enhanced electrical performance and reliability.


REFERENCES:
patent: 5476393 (1995-12-01), Narita
patent: 6056572 (2000-05-01), Matsumoto et al.
patent: 6267620 (2001-07-01), Ma
patent: 6319033 (2001-11-01), Ma
patent: 6383016 (2002-05-01), Ma
patent: 6394838 (2002-05-01), Yen

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