Adaptable high integrated electric interconnecting system

Details Adaptable high integrated electric interconnecting system Adaptable high integrated electric interconnecting system

1999-03-26

2001-08-07

Abrams, Neil (Department: 2839)

Electrical connectors

Convertible by internal change to selectively cooperate with...

Coupling part

C439S518000

Reexamination Certificate

active

06270366

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a plug-in type electric interconnecting system and particularly to interconnecting components to be used for a plug-in type electric interconnecting system.
The present invention is particularly suited for a high integrated system but may also be applied to a high power system or other corresponding systems.
BACKGROUND OF THE INVENTION
Electric connector systems including electronic connector systems are used to interconnect electric or electronic systems as well as electric or electronic components.
Generally, an electric connector system includes a projection-type connector member such as a conductor beam and a reception-type connector member such as a conductor socket. In such a type of electric interconnecting system, an electric interconnection is achieved by inserting the projection-type connector member into the reception-type connector member. Such an insertion brings the projection-type connector member and the reception-type connector member into contact with each other at their conducting areas, so that an electric signal may be transmitted through those connector members.
In a conventional interconnecting system, for example, in the pin grid array shown in
FIG. 1
which will be further discussed below, a multitude of individual conductor pins
11
are arranged on a grid structure
12
and a multitude of individual conductor sockets (not shown in
FIG. 1
) are arranged to receive the individual pins
11
.
Here, each pair of the above pin and socket transmits a different electric signal.
A high integrated electric interconnecting system may be characterized by a great number of interconnecting contacts within a small area. Naturally, a high integrated electric interconnecting system has shorter signal paths than a low integrated electric interconnecting system and thus occupies a smaller space.
The short signal path in a high integrated electric interconnecting system enables a speedy transmission of electric signal.
Generally, a high integration of an electric interconnecting system improves performance of the system.
A lot of attempts have been made so far to realize high integration of an electric interconnecting system.
An example of the electric interconnecting systems so proposed is illustrated in
FIG. 2
a
. The electric interconnecting system illustrated in
FIG. 2
a
is known as the column and box type electric interconnecting system.
In the system shown in
FIG. 2
a
, the projection-type interconnecting member
21
is a conductor beam or conductor column and the reception-type interconnecting member
22
is a conductor socket with a box form.
FIG. 2
b
shows the plan view for
FIG. 2
a
in which the column is received in the socket.
As shown in
FIG. 2
b
, the socket
22
includes, on its inner walls, the sections
23
and
24
protruding inward for fixing the column within the socket.
Another form of electric interconnecting system, which was also proposed, is shown in
FIG. 3
a
. The electric interconnecting system shown in
FIG. 3
a
is known as a single beam interconnecting system. In the system shown in
FIG. 3
a
, the above-mentioned projection-type interconnecting member is the conductor pin or column
31
and the reception-type interconnecting member is the conductor flexible beam
32
.
FIG. 3
b
shows the plan view for
FIG. 3
a
. The flexible or elastic beam
32
is bent toward the column
31
to maintain the contact with the column
31
.
The third type of conventional electric interconnecting system as proposed is shown in
FIG. 4
a
. The electric interconnecting system shown in
FIG. 4
a
is known as an edge connector system.
The projection-type interconnecting member of the edge connector system is composed of an insulated printed circuit board
41
and conductor patterns
43
formed on the opposite sides of the printed circuit board. The reception-type interconnecting members of the edge connector system comprise a set of upper conductor fingers and a mating set of under conductor fingers
42
to grip the printed circuit board
41
between the upper and lower sets of fingers.
FIG. 4
b
shows an elevation view for
FIG. 4
a
, in which the printed circuit board
41
is interposed between an upper and lower fingers
42
. When the printed circuit board
41
is interposed between the above-mentioned conductor fingers
42
, the respective conductor patterns
43
come in contact with the corresponding conductor fingers
42
, whereby the electric signals can be transmitted through the conductor patterns
43
and the conductor fingers
42
.
The fourth type of conventional electric interconnecting system as proposed is shown in FIG.
5
. The electric interconnecting system shown in
FIG. 5
is known as pin and socket interconnecting system.
In the system shown in
FIG. 5
, the above-mentioned projection-type interconnecting member is the conductible stamped pin
51
and the reception-type interconnecting member is the conductible slotted socket
52
.
The socket
52
is typically mounted in a through hole formed on a printed circuit board. The pin
51
is larger in size in comparison to the slotted space formed inside the socket
52
. Such a dimension of larger pin is intended to secure the pin
51
in the socket
52
tightly with the aid of elasticity.
The interconnecting systems shown in
FIGS. 1
to
5
are all defective somehow on various grounds.
For example, the interconnecting members of those systems generally include metal platings on the outer surface and inner surface of the projection-type and reception-type member to ensure enough electric contact between the interacting members. Because such a metal plating is typically realized through gold or other expensive metals, the systems shown in
FIGS. 1
to
5
can be manufactured only at a high cost.
The edge connector system of
FIG. 4
has the drawback of its capacity and susceptibility to electromagnetic interference.
Similarly, the pin and socket system of
FIG. 5
not only requires a big force to insert the pin into the slotted socket but also allows only small tolerance to thereby make adequate fixing difficult.
Major problems in connection with the systems shown in FIGS.
2
and
3
(when they are arranged as in FIG.
1
), the system shown in FIG.
4
(when it is arranged in a row) and the system shown in FIG.
5
(when it is arranged as in
FIG. 4
a
), reside in that those systems are not proper for integration which is needed for the technology of future semiconductors and computers.
As an attempt to solve such a problem of integration, there was proposed a high integrated interconnecting system by U.S. Pat. No. 5,575,686.
The construction for this high integrated interconnecting system is shown in
FIGS. 6
a
-
6
c
. The high integrated interconnecting system of this patent includes a projection-type interconnecting member
61
and a reception-type interconnecting member
62
.
The above-described projection-type interconnecting member
61
comprises an insulated substrate
63
, conductor posts
65
and insulated buttresses
67
supporting the conductor posts. The conductor posts
65
, which are arranged around a buttress
67
, are engaged with the conductor beams
64
of the corresponding reception-type interconnecting member
62
. Further, the foot sections
65
A of the conductor posts
65
have a variety of forms depending on the types of interface devices(not shown) to be connected. The conductor posts
65
with the rectangular foot sections
65
A as shown in
FIG. 6
a
are well adapted for electric connection of the printed circuit boards positioned at a right angle.
In addition, the reception-type interconnecting member
62
, which consists of an insulated substrate
66
and plural conductor beams
64
attached on the insulated substrate
66
, receives the projection-type interconnecting member
61
for transmission of electric signals.
The conductor beams
64
of the reception-type interconnecting member
62
has a shape as seen in
FIG. 6
b
. In particular, the conductor beam
64
largely consists of the contacting part
64
A

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