Fabrication method of connector having internal switch

Details Fabrication method of connector having internal switch Fabrication method of connector having internal switch

1999-07-16

2001-08-07

Young, Lee (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S874000, C029S876000, C029S856000, C439S736000, C439S405000, C439S489000

Reexamination Certificate

active

06269539

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to an electrical connector, particularly to an electrical connector for connecting a plurality of electric circuits by mechanical coupling with a counter electrical connector, and a fabrication method of the connector.
2. Description of the Prior Art
FIGS. 1A through 1C
are plan, front, and sectional views of a prior art male connector with a dual-in-line half-pitched contact array for the SCSI specification, respectively. The male connector is composed of an insulating housing
41
encapsulated by a metal shell
42
, and a array of contact members
43
inserted into dual-in-line rectangular shaped through-holes
44
of the insulating housing
44
. While
FIGS. 2A through 2C
are plan, front, and sectional views of a prior art dual-in-line female connector, respectively, which mechanically couples with the male connector to make an electric connection as shown in
FIGS. 1A through 1C
. The female connector is composed of an insulating housing
21
, a metal shell
22
, an array of pairs of upper and lower contact members
23
inserted into rectangular shaped through-holes
24
to be fixed to the insulating housing
21
, and an insulating base
26
having terminal-supporters
25
gaplessly continuous to the insulating housing
21
, in which each of the upper and lower contact members
23
, made by a metal plate, has a body
30
, a pair of spring contacts
28
at a front end of the body with respective opposing contact parts
29
, and an L-shaped terminal
27
at a back end. Further,
FIGS. 3A and 3B
are sectional views of another type of prior art inline male and female connectors, respectively. In both cases, the male connectors shown in
FIGS. 1A through 1C
and
FIG. 3A
couple with the female connectors shown in FIG.
2
B and
FIG. 3B
by inserting each of the respective male contacts
43
and
49
thereof into the corresponding female spring contacts
28
and
33
thereof, respectively. Although a pair of the spring contacts of the female connector squeezes the inserted contact of the male connector, incomplete coupling often occurs due to severe jarring or accidental pull of a cable. Such an incomplete coupling of connector may give rise not only to a not simple disconnection of the electric circuits but also to an unrecoverable breakdown of the input circuit due to a sudden increase of an input impedance. For example, if an input terminal is opened while the input circuit is activated, the input circuit is often damaged, particularly an input circuit to an MOSLSI circuit. Therefore, it is desirable that the input circuit is activated after the input terminal is terminated with a proper input impedance by complete coupling of connectors. Further, it may be convenient in some cases that a complete or an incomplete coupling of connectors is correspondingly indicated by a suitable indicator, such as a warning lamp or a signal on a display. Therefore, it is needed to detect whether a coupling of connectors is completed or not. However., either case of the prior art connector has nothing to do for these inconvenience. Of course, the circuit can be protected by some protective circuit, but it incurs no little expense and complex circuits. These inconveniences and requirements must be improved simultaneously to achieve an advanced, improved connector.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a connector having a detector means for detecting whether the connector is coupled or decoupled with the counter connector.
Another object of the present invention is to provide an internal connector which is mounted on an electric instrument having an electric module for changing a state by coupling or decoupling with the external connector.
A further object of the present invention is to provide a connector having an electric switch for changing a state by coupling or decoupling with the counter connector.
Still a further object of the present invention is to provide a method for making a female connector having an electric module for changing a state by coupling or decoupling with the corresponding male connector.


REFERENCES:
patent: 4269467 (1981-05-01), Hughes
patent: 4764645 (1988-08-01), Takasawa
patent: 4790763 (1988-12-01), Weber et al.
patent: 5213514 (1993-05-01), Arai
patent: 5234356 (1993-08-01), Maejima et al.
patent: 5639250 (1997-06-01), Neef et al.
patent: 5651685 (1997-07-01), Brinkman et al.
patent: 5761805 (1998-06-01), Guyer
patent: 5926952 (1999-07-01), Ito
patent: 6041498 (2000-03-01), Hillbish et al.
patent: 6059601 (2000-05-01), Hirai et al.

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