Electrical connectors – Preformed panel circuit arrangement – e.g. – pcb – icm – dip,... – With provision to conduct electricity from panel circuit to...
Reexamination Certificate
2000-10-13
2001-10-02
Sircus, Brian (Department: 2839)
Electrical connectors
Preformed panel circuit arrangement, e.g., pcb, icm, dip,...
With provision to conduct electricity from panel circuit to...
C439S077000, C361S789000
Reexamination Certificate
active
06296494
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a printed-circuit board module of the type in which a printed-wiring board has mounted thereon a smaller printed-circuit board with parts mounted thereon. The “printed-circuit board” mentioned herein is intended as a generic term for a printed-wiring board having a rigid board as of glass epoxy and a flexible printed-circuit sheet having a flexible sheet as of polyimide.
FIG. 4
depicts an example of a conventional printed-circuit board module of this kind. The illustrated example is what is called a board-to-board type module with a printed-wiring board
11
having mounted thereon a smaller printed-wiring board
12
.
The printed-wiring board
11
has an opening
13
, in which parts (not shown) mounted on the underside of the printed-wiring board
12
are held upside down.
The printed-wiring boards
11
and
12
are electrically connected via pin terminals
14
secured at one ends thereof to the printed-wiring board
12
in side by side relation on the two opposite sides of the printed-wiring board
12
. The pin terminals
14
have their other ends bent as required and connected by soldering to connecting conductor pattern lands
15
formed side by side on the printed-wiring board
11
. Printed wiring patterns connected the connecting conductor pattern lands
15
are not shown.
The pin terminals
14
thus provide electrical and mechanical connections between the printed-wiring boards
11
and
12
.
As described above, the conventional printed-circuit board module uses the pin terminals
14
to establish electrical connections between the printed-wiring boards
11
and
12
; therefore, its fabrication involves cumbersome securing of the pin terminals
15
to the printed-wiring board
12
and their manual soldering to the conductor pattern lands
15
, and hence it requires a large number of man-hours.
Moreover, since the pin terminals
14
mechanically supporting the printed-wiring board
12
are thin and apt to bend, the board
12
cannot stably be held at a predetermined position (or height).
Furthermore, in this kind of printed-circuit board module it is generally required that the parts mounted on the underside of the printed-wiring board
12
held in the opening
13
do not extend downwardly of the underside of the printed-wiring board
11
. Accordingly, there are cases where the lengths and bending of the pin terminals
14
need to be adjusted according to the heights of the parts mounted on the underside of the printed-wiring board
12
; and such adjustments of the pin terminals
14
are not easy and are troublesome.
SUMMARY OF THE INVENTION
It is therefore an object of the present invention to provide a printed-circuit board module that is easy to assemble, permits easy adjustment of the amounts of downward extension of the board-mounted parts and is structurally stable as a whole.
According to the present invention, there is provided a printed-circuit board module which comprises: a flexible printed-circuit sheet having parts mounted on its one side and having its two opposite end portions bent toward the part-mounting side (or component side), connection terminals being formed side by side along the marginal edges of the bent end portions; a printed-wiring board having an opening for receiving the parts and connecting conductor pattern lands formed in the vicinity of the opening for connection to the connecting terminals; and a fixing frame. The flexible printed-circuit sheet has the peripheral edge of its component side fixedly supported by the fixing frame mounted on the printed-wiring board around the opening.
REFERENCES:
patent: 4468074 (1984-08-01), Gordon
patent: 5018005 (1991-05-01), Lin et al.
patent: 5313368 (1994-05-01), Volz et al.
patent: 5479110 (1995-12-01), Crane et al.
patent: 5586010 (1996-12-01), Murtuza et al.
patent: 5742484 (1998-04-01), Gillette et al.
patent: 5920465 (1999-07-01), Tanaka
patent: 5969952 (1999-10-01), Hayashi et al.
Iwasa Tatsuru
Yuasa Yuichi
Connlly Bove Lodge & Hutz
Japan Aviation Electronics Industry Limited
Nguyen Son V.
Sircus Brian
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