Note: Descriptions are shown in the official language in which they were submitted.
}1r,~ [Jl\~ T` r;~o~ INr~i~) c:r~ u~ DS
This .invenl:ion relate~; to a plug-in uni-t :for
prin-ted c:ircuit boarcls.
Kno-.~n p:Lug-in units consis-ts ol a system of plates
and supports -to which -the front encl of a printed clrcul~
board i.s fixecl, a strip plug being fixed to the rear
end of -the prin-ted circuit board. The edges of the
printed circui-t board themselves ac-t as slide guides,
and -this plug--in unit is slidably disposed in an
appliance provided with guides, for example in ~ron-t of
-the appliance switchgear cabinet. In such a case, it
is known to provide such plug-in units with test
connections in order to be able to carry out measurements
in the rear region of the switchgear cabinet. For -this
purpose, individual tes-t sockets are disposed as required
on the printed circuit board, for which individual
insertion openings, plug sockets and -the like are
provided on the plates and supports in the fron-t region
of the plug-in unit, and a perforated fron-t plate is used.
The disadvan-tage of this is -that when fitting a plug-in
uni-t with -tes-t connections, -the parts have -to be
construc-ted in accordance wi-th the requirements of the
particular case, i.e. individual construction of the
parts is necessary in practice, and assembly is difficult,
because several different parts have to be exactly
adap-ted to each other.
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The objec,t oL'-l,h~ present invent:ion :is -to prov:ide a
plug-:Ln unl-t o:C t~lC sa:id type ~ wh:i,ch ls par1;:icular1y
5 imple to c onstruct and assemb'le.
According to the inven-tion .rl holder is moulded
on-to -the rear of the front plate and in one piece there-
wi-th, into wh:ich holder plug socket sets are inserted,
the holder being closed by a cover provi.ded with through
openings for the connection pins of the plug socke-ts.
By means of -this arrangement, a plug-in U]lit serving
purely for -tes-t purposes is provided, the component parts
of which can be mass produced. Assembly is simple, as
the perfora-ted front pla-te is cons-tructed at -the outset
in one piece with the holder for -the plug socket sets.
Required connection modifications of any type can then be
obtained in a simple manner by using the various plug
socket sets which are commercially available. Thus the
various plug socke-t sets are inserted in-to -the holder in
the required manner, and -the holder is -then closed simply
by means of the cover. Particularly simple assembly is
a-ttained if -the cover is made so that i-t can be snapped on.
The present invention also provides an electrical
socket assembly, comprising an elonga-te housing and a
plurality of elec-trical sockets in the housing, which
housing comprises a ~ront pla-te, a socket holder in-tegral
with the front pla-te at the rear of the la-t-ter, the fron-t
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pla-te h~vi~g openings al:igned w.i.th the sockets f`or
i.nser-tion of plugs, the holder belng open a-t the rear
for i.n,sertion of -the socke-ts .in -the housing, and a cove~r
closing the ho:Lder and provicled with openings through
which extend connec-ti.on pins electrica].ly connec-ted to
the socket~
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The inven-t.i.on further provides an electrical plug-in
assembly comprising a suppor-t member with a pa.ir of
parallel edges for sliding insertion in-to receiving
guides, and an electrical socket assembly extending along
a further edge region of the support member between the
said parallel edges, which socket assembly includes a
front plate provided with holes for receiving connec-tor
plugs, a socket holder formed integrally wi-th the front
plate at the rear of the latter, a plurali-ty of connector
sockets in the holder and aligned with respective holes
:: : in the front pla-te, the holder being open at its rear for
insertion of the sockets, and a cover closing the rear
of -the holder and provided with through openings through
which extend connection pins electrically connected
to the sockets.
Embodiments of -the invention are described in
greater detail hereinafter with reference to -the
accompanying drawings in which:-
Fig. 1 is an exploded view of a firs-t plug-in unit
according to the inven-tion,
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r!`,ig. 2 sll~ws a detL~ o:C i~ L i.n sect:ion,
Fig. i showf; a secor)cl arrang~men-t ~!obo~ying, the
invcntion, and
Fig. ~ shows a thir~ arrangement ernbodying the
invention.
The plug-in uni-t shown in ]?igs~ 1 and 2 comprises an
insula-ting plastics housing 10 wi,th a fron-t plate 1 with a
handle 2 and provided with a plural,i-ty of` bores 3 through
which the plugs 9 of test and measurement equipment to be
connected can be plugged.
On -the rear of the fron-t plate 1 -there is integrally
moulded in one piece a holder 4 in which commercially
available plug socke-ts or socket sets 11 can be inser-ted
in any desired number and combination, in such a manner
that the socket se-ts lie behind respective pairs of
bores 3. Only one socket se-t is shown in Fig. 2.
The socke-ts of the plug socket sets are provided wi-th
relatively short connection pins 5 in -the illustrated
embodiment. Each se-t may comprise -two (or more) sockets
made from one piece of sheet me-tal.
After inserting the socket sets 11 into -the holder 4
~ the latter is closed by a cover 6 which is pref'erably
; snapped onto the holder 4. The cover 6 is provided with
~ ~ through openings 12 for the connec-tion pins 5,
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5-
:I:n the :i:llusl;ratc(l embodirnent, the front end 13 or a
prin-ted circuit ~oar~ 7 is scre~le~ to the Cront plat~
whereas to the rear encl of -the printed circuit board 7
-there is scre~7ed a strip plug ~i which acts as the
co~lec-tor to the rear part or an appliance, and in
par-ticular to -the swi-tchgear cabine-t Gf the appliance.
In the illustratecl embodimen-t, -the connection pins
5 of -the socke-ts are bent at right angles and are plugged
into the prin-ted circuit board 7, thus becoming
electrically connec-ted thereto. The plug strip 8 is
electrically connected -to the printed circuit board 7 in
a corresponding manner.
The socket se-ts are located in alignment with -the
openings 3 by locating partitions 14 moulded as part of
the holder 4, and by the cover 6.
In use,the upper and lower edges 15, 16 of the
printed circuit board 7 are slid into guides in an
appliance, and the plug strip 8 makes contact with a
fixed socke-t strip connected to the circuitry of -the appliance.
As an alterna-tive to the aforesaid embodiment, it is
possible to make the connection pins 5 of the sockets
of -the socket sets so long -tha-t they can be directly
connected -to -the plugs of the plug s-trip as shown in
Fig. 3. In such a case, it is not necessary to use a
printed circuit board. Instead of the prin-ted circui-t
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boar(l, :i.t :i-; s~ f.icient I.o use a corresporldingly sizeA
plastic--: plate 17 or a pls-tios frame of corresponding
o1l-ter dimensions, and -to join this pla-te or frame to the
front plate 1 and plug strip 8, this cornponent then
-taking over the guide function of the printed circui-t
board during the sliding moverrlen-ts of -the plug-in unit.
Fig. 4 shows a furth.er arrangement in which the plug
strip 8 is omitted, and a plastics frame or plate 27
comprises a portion 18 for direct recep-tion of -the
connection pins 5 ^orning from the f`ront, which are snapped
or moulded in place, e.g. into slots therein and have
projecting ends 19 for connection -to appliance circui-try.
However, in this case the plug in unit can only be
pulled out ater removing the wiring from -the pins, but
it is a ver ine~pensive corstr CtlO~.
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