Jack-plug socket

Details Jack-plug socket Jack-plug socket

2000-12-27

2001-08-14

Nguyen, Khiem (Department: 2839)

Electrical connectors

With insulation other than conductor sheath

Plural-contact coupling part

C439S677000

Reexamination Certificate

active

06273761

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to an improved jack-plug socket and more particularly to a jack-plug socket that is capable of prohibiting smaller size plugs from inserting into a socket having a larger size jack.
BACKGROUND OF THE INVENTION
The commonly used telephone plug (as shown in
FIGS. 1 and 2
) and Internet link plug at present has to insert into a jack-plug socket to establish connection for communicating with other parties desired or accessing the Internet.
It happens occasionally that users have already inserted the phone plug or Internet link plug into the socket but could not get the connection or communication established. One of the causes of this problem is that a wrong plug has been used. There are generally two types of socket specification being adapted for the phone and Internet link nowadays. One type (socket
7
, shown in
FIG. 1
) has a smaller size of jack
72
for connecting with a smaller size of plug
71
. Another type (socket
8
, shown in
FIG. 2
) has a larger size of jack
82
for connecting with a larger size of plug
81
. The larger plug
81
cannot be inserted into the smaller jack
72
and won't cause problem. However the smaller plug
71
can be inserted into the larger jack
82
but cannot establish electric connection properly. Users might incidentally do so without awareness as the appearance of the plug
71
and
81
looks almost alike. As a result, the telephone does not work and Internet cannot be logged on. Users might confuse it with telephone disorder or Internet network malfunction. It is an annoying problem yet to be resolved.
SUMMARY OF THE INVENTION
In view of aforesaid disadvantages, it is therefore an object of this invention to provide an improved jack-plug socket that has a restrain means built in the socket for prohibiting the phone or Internet link plugs of smaller size from inserting into the sockets of larger size jacks.
Another object of this invention is to add an actuating means in the socket for restoring the restrain means to its initial position after operation is completed.
One still further object of the present invention is to shroud (or embed) the socket with a metal cover to prevent the socket from electric interference. The metal cover further may have an elastic strip for replacing the actuating means to save production cost and time.
One still further object of the present invention is to provide a spring between a free end of the socket and a ramp arm of the restrain means.
One still further object of the present invention is to provide a spring between the ramp arm of the restraint means and the inside wall of the metal cover.
One still further object of the present invention is to provide an elastic member at the top wall of the socket during plastics injection forming process with the elastic member located above a pivot spindle for providing a downward pressing force on the ramp arm.


REFERENCES:
patent: 6142834 (2000-11-01), Liao
patent: 6168473 (2001-01-01), Hsin
patent: 6186836 (2001-02-01), Ezawa et al.
patent: 6190210 (2001-02-01), Belopolsky et al.
patent: 6217391 (2001-04-01), Colantuono

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