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Патент USA US3078369

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Feb. 19, 1963
Filed July 29, 1960
5 Sheets-Sheet 1
Feb. 19, 1963
Filed July 29, 1960
3 Sheets-Sheet 2
Feb. 19, 1963
Filed July 29, 1960
3 Sheets-Sheet 3
United States Patent Ori?ce
Gundoirar Braumann, Munich, Germany, assiguor to
Siemens 8: Halske Aktiengesellschat't Berlin and Mn
nich, a corporation of German
Filed July 29, 1960, Ser. No. 46,146
(Ilaims priority, application Germany Aug. 19, 1959
20 Claims. (Cl. 200—103)
Patented Feb. 15°, 1953
which is common to the entire relay strip and comprises
the core members for the individual relay sets thereof.
This arrangement simpli?es construction and results in‘
the particular advantage that the wiring planes lying cen
trally thereof are switched through for all relay sets of
the relay strip, thereby greatly facilitating the wiring
operations ot be carried out in a coupling ?eld.
The previously mentioned arrangement, in connection
with an individual relay set, of the individual magnetic
This invention is concerned with ‘a relay set constructed 10 circuits between layers of insulating carriers, may be ap
of two electromagnetic relays.
plied in production-simplifying manner in connection‘ with
a relay strip, by the provision of carrier members extend
The armatures of known relay sets of the above noted
ing throughout the length of the relay strip in super
kind are disposed side by side and the cores or yokes
posed planes, each such member being of an integral
are interconnected by transversely extending yoke webs.
The 'armatures have until now been arranged in the 15 \ ructure and including all insulating carriers disposed
successively in the corresponding plane. It is for the
above indicated manner even in the case of relays em
construction of the relay strip particularly advantageous
ploying parts of magnetic circuits as electrical conductors.
to eiieot the interconnection or bonding together of the
The object of the invention is to provide a relay set of
integral carrier members of the various planes or layers
the type indicated in the preceding paragraph, which
distinguishes over known relay sets by savings with re
so that the contact points lie within airtight sealed cham
spect to individual parts, thus simplifying production,
bers. The integral structure of the respective core mem
ber tor all relay sets permits disposal thereof between
and which is constructed so that it is particularly suit
the insulating carrier members or layers so as to require
able for use in connection with relay coupling ?elds or
cross point circuits and adapted to the wiring conditions
only two lead-out terminals, resulting in a great ad
prevailing therein.
This object is realized by disposing [the armatures
serially along the longitudinal axis thereof, so that their
vantage inasmuch as such terminals involve in sealed-in
relays the most sensitive places so far as the sealing of
the contact chambers or spaces is concerned.
free ends face in opposite directions, while positioning
For example, when ‘considering a relay strip such as
the core member perpendicular to the longitudinal di~
will be presently describd, comprising six successively
rcction of the armatures, with the free ends of the 30 disposed relay sts, having four superposed magnetic
armatures overlapping the core member and forming a
circuits, there will be required a lead-out terminal for
working air gap therewith.
each of the 48 contacts and 2 lead-cut terminals for each
A single core member will thus su?ice for two relays,
of 4 core members, that is, a total of 56 lead-out termi
thereby eilecting a saving ‘with respect to individual
nals. Upon comparing this arrangement with one con
taining the same number of dry reed contacts, requiring
The relay set according to the invention is particularly
for each contact two lcad~out terminals, that is, a total
adapted ‘for use in connection with relay coupling ?eld
of 96 lead-out terminals, it will be seen that there will
or cross point circuit techniques because it provides within
result a saving amounting to 40‘ lead-out terminals, thus
the smallest possible space three mutually parallel ex
clearly showing the advantage of the above indicated
tending wiring planes, resulting in obvious advantages
40 structural disposition of the magnetic circuits between
upon combining a plurality of relay sets to form a cross
inter-fused carrier layers in connection with relay strips
point or coupling ?eld. The relay according to the in
vention is moreover especially adapted for cooperation
. etic circuits such as have already been employed in con
according to the invention.
The various objects and features of the invention will
appear from the description of embodiments thereof
which will be rendered below with reference to the
nection with previously known relays. The advantages
accompanying drawings, in which:
of the new relay in‘ the case of cross point circuits or
FIG. 1 shows in schematic representation the arrange
ment of parts forming ‘the magnetic circuits of a relay
set according to the invention;
with mutually independent layerwise superposed mag
coupling ?elds are increased by the superposed arrange
ment of magnetic circuits because it is possible, due to
the presence of three parallel disposed wiring planes,
H6. 2 represents in ‘similar schematic manner a relay
to allocate a plurality of contact points to each individual
strip constructed of a plurality of relay sets;
FIG. 3 illustrates in perspective representation the man
ner of disposing the iron parts of magnetic circuits in a
According to another feature of the invention, the indi~
vidual layerwise superposed magnetic circuits are re
spectively inserted between two layers of a carrier made
of insulating material which are bonded together so as
to form the relay set ‘as a unitary structure. The layers
layerwise constructed carrier;
FIG. 4- is an elevational view of a detail for FIG. 3;
FIG. 5 shows in elevational side view a completely as
sembled relay strip; and
of the carrier can thus be made to closely embrace or
FIG. 6 represents an end view of the relay strip.
envelop the contact points, and the bonding together
of these layers, for example, by fusing, offers the pos
60 ber 1, two armatures 2 and 3 and two angular magnetical
sibility of disposing the contact points within spaces or
chambers which are respectively evacuated or ?lled with
a protective gas. This feature likewise enchances the
favorable properties of the new relay set for use in con
nection with coupling ?elds or cross point circuits since
it provides particularly good con-tact conditions for circuit
Further advantages with respect to the coupling ?eld or
cross point technique are in accordance with another fea
The relay set shown in FIG. 1 comprises a core mem
ly conducted metal sheets 4 and 5. The two armatures
are arranged with the inner ends facing One another.
The core member 1 extends transverse to the longitudinal
direction of the armatures, the free ends of the latter
forming therewith working air gaps extending in a direc
tion perpendicular to the plane of the drawing. Accord
ingly, there are spaces between the core member 1 and the
armatures 2 and 3 which determine the size of the respec
tive air gaps.
ture of the invention obtained by combining a plurality 70 The armatures are respectively surrounded by energiz
of the new relay sets to form a relay strip, such combina
ing or activating coils 6 and 7 and with holding coils 9
tion being e?ected by the provision of a core member
and 10, the latter being respectively disposed'adjacent to
the corresponding energizing coils at regions of the arma
tures facing away from the air gaps.
A relay set such as shown in FIG. 1 would be operable
without the angular metal sheets 4 and 5, but it would be
all relays of the strip by the core member within the
structure itself. Upon arranging a plurality of relay strips
in a row, the neighboring core members can be inter
connected by means of their soldering tabs.
quite insensitive because the greater part of the ?ux would
To each armature of the arrangement represented in
extend across air. The use of the angular metal sheets,
which constitute a magnetically conductive connection
between the respective armatures and core member, pro
vide for a flux extending save for negligible air gaps which
FIG. 2 is allotted an energizing winding or coil as in
dicated respectively at 18 and 19, such winding embracing
the corresponding armature near the working air gap
thereof. For each two armatures is- provided a common
are upon armature attraction closed, over a closed iron 10
holding coil, the four holding coils being indicated by
The core member 1 is at its ends provided with solder
ing tabs 11 and 12 and the armatures terminate in solder
ing taps 13 and 14, respectively. The armatures and the
reference numerals 20-23. It is understood, of course,
that a holding coil may be provided for each individual
In the arrangements schematically indicated in FIGS. 1
core member also serve as electrical conductors, circuit 15 and‘ 2, the individual parts which are made in the form of
connections, not shown, being connectable to the soldere
ing tabs. The angular metal sheets for magnetically con
ductively connecting the armatures and the core member
must be electrically insulated from the armatures or the
core member or from both.
The armatures 2 and 3 may be, for example, resilient
springs which are ?xedly disposed at places near the con
nection thereof with the respective angular metal sheets 4»
and 5 and are upon energization attr‘actedto actuated-posi
tion. Contact points may be riveted thereto at their free
ends and corresponding cooperating contact points may
be provided on the core member.
However, the structure according. to the invention also
flat punched elements, are respectively disposed substan
tially in one plane. It is now possible to dispose a plural~
ity of such arrangements superposedin several layers and
to employ coils which are respectively common- to super
posed armatures, so asto provide relay sets or relay strips
having a great number of. mutually independently and
rapidly operable contacts.
FIG. 3 shows an arrangement of iron parts of magnetic
circuit-s of’a relay'strip constructed of sixrelay sets made
according to the inventiomin a carrier which is construct
ed so as to permit disposal. of the contacts within airtight
sealed chambers. As has been mentioned before, the
construction of the magnetic circuits is for this purpose
particularly favorable.
permits the use of- so-called ?ux brackets or members.
The manner of- assembling individual relay sets so as
Such a ?ux member may be explained with reference to 30
to construct the relay strip can be understood from the
FIGS. 3 and 4, showing a ?ux member 27 which, while
following explanations and therefore need not. be sepa
broadly similar to the armatures of FIG. 1, is made as a
rately illustrated and described. It may be‘ expressly men
rigid magnetically conductive part serving as a support for
tioned, however, that the iron parts of the magnetic cir
an armature 28 movably journalled thereto. The ?ux
member extends beyond the free end of the armature. 35 cuits may be disposed in a manner ‘different from the one
which is apparent from FIG. 3 and that such ?gure ac
Such ?ux members may be used in place of the armatures
cordingly represents only an example of an embodiment.
The carrier according to FIG. 3 is subdivided into layers
24 according to the layerwise disposition of the magnetic
netically conductive connections between the core mem 40 circuits. These carrier layers vare, for example, ceramic
members provided with a surface glazing of glass. Each
ber and the respective ?ux members carrying the arm&—
carrier member or layer is ?at and smooth on the bottom
tures. The use of ?ux members effects known advantages
side and provided on the other side with tublike recesses
with respect to switching speed and contact pressure,
25 formed therein, one such recess being common to two
which are based upon the flux superimposing condition.
oppositely extending armatures. The-recesses 25 are sepa
The previously mentioned three wiring planes which
are of advantage in the coupling. ?eld or cross point cir
rated by webs 26.
cuit techniques, are apparent from FIG. 1. As is known,
Between the two carrier layers 24 are illustrated parts
a plurality of relays are in coupling ?elds disposed super
of magnetic circuits which are to be disposed therebe
posed and alongside one another. Upon effecting such
tween. Flux members 27 carrying armatures 28 mov
arrangement with the relay set according to the invention,
ably journalled thereon, as described before with refer
the core member will form the central wiring plane and
ence to FIG; 4, are being used in. the illustrated embodi
the soldering tabs of the armatures will. form further two
ment, such embodiment employing twelve ?ux members
wiring planes extending on both sides of. the core member.
27 each provided with an armature‘ 28. Only two ?ux
Upon arranging a plurality of relays successively in the
members 27 have been included in FIG. 3 for simpli?ed
direction of the core members thereof, the respective core
representation. The flux. members are rigid elements and
members can be interconnected by simple soldering with
each is provided with a soldering tab at the outer end
out requiring the use ofwires in. the corresponding plane.
thereof. The armatures 28 are by‘ means of springs 30
held on the respective ?ux members, such springs being
The relay strip illustrated in FIG. 2 is constructed of a
at one end thereof connected with the armature and
plurality of relay sets made according‘ to the invention and
2 and 3,. forming with the core member air gaps with the
free armature ends projecting thereinto. The angular
sheet members 4 and 5' would in such case provide mag
is provided with a core member 15'WhlCl1 is common for 60 havingiitsrother end connected to the corresponding ?ux
all relays of the strip. The magnetically conductive con
nection between the ends of the armatures and the core
member is effected by two T-shaped metal sheets 16 and
17, one‘. of each- such sheets extending overall armatures
member, for example, by Welding. As will be seen from
FIG. 4, the spring 3% is in each case disposed between the
armature and the flux member. A boss 31‘ punched from
the material of the flux member provides a pivot axis for
disposed on one side of the core member and the other
the armature at the area thereof which is opposite to
establishing connection. with the core member.
the" end facing the air gap. Each ?ux member is provided
with cars 32 at the side thereof which carries the arma
ture, such ears being provided with cutouts 33 formed
therein for a purpose which will be presently explained.
on, so as to obtain the previously mentioned“ advantages. 70 The free end of the armature is provided with a cylindri
The advantages resulting in the coupling'?eld or cross
cal contact piece 34.
point circuit technique from the use of the above ex
The core member 25‘ is shaped in meandering or un
Instead of the armatures shown schematicallyin FIG. 2,
made, for example, as resilient springs, there may again
be used ?ux members having armatures journalled there
plained relay strip, above and beyond the advantages ob
tainable by the individual relay sets‘, reside in the fact
that the wiring of the central wiring plane is effected for
du'lating manner and’ provided with contact springs 36
which are secured thereto, for example, by welding. The
portions of these contact springs which extend laterally
3,0 78,359
from the core member, are slotted to form tongues or
saving of space, since the spring characteristics of the
?ngers 3'7 and 38. Each tongue is provided with a cylin
latter require a relatively great free length which cannot
drical contact piece 39 on the side thereof which faces the
be shortened owing to contact pressure and restoring
armature. The opposite ends of the core member are
power which they must have.
provided with soldering tabs 40.
FIGS. 5 and 6 show a relay strip equipped with four
The magnetically conductive connection between the
superposed magnetic circuit layers assembled in accord
ends of the ?ux members and the core member is effected
ance with FIG. 3. The coils are freely wound and
by three metallic webs or strips 414%. The strip 41 is
placed without spools upon the parts 49 of the carrier
welded to the core member and extends parallel to the
layers 24 which surround the ?ux members and project
longitudinal direction of the flux members. The strips
laterally from the central part of the carrier and also
42. and 43 which interconnect the ends of the ?ux mem
upon the corresponding parts 50 of the cover 53 co
bers on the respective sides of the core member and the
operating therewith. The energizing coils are indicated
latter over the web All, are placed upon the ?ux members
at 51. Holding coils 52 are in addition provided, one
in electrically insulated manner with respect thereto.
respectively in common to three relays.
The parts are assembled as follows:
The soldering tabs 29 and parts of the portions 48 of
The core member 35 is placed upon the carrier layer
the flux members extend from the carrier body. The
member 24- shown at the bottom of FIG. 3 so that the
same is true of the ends of the magnetically conductive
angular portionsthereof which carry the contact mem
metallic sheet 41. Over these outwardly extending parts
bers 36 come to lie within the tublike recesses 25 while
are placed insulating plates 57 having slots formed there
the intermediate portions thereof come to lie upon the
in through which these parts project. These insulating
web parts 26.
A transversely extending groove 44 is
provided for receiving the magnetically conductive strip
or- web 41.
The ?ux members 27 are thereupon inserted into the
bottom carrier layer 24 so that the brackets 45 in the
lateral extensions of the tublike recesses enter into the
cutouts 33 formed in the ears 32. Each ?ux member now
plates also support recti?ers 54, one such recti?er for
each relay. Instead of using in the structure according
to FIGS. 5 and 6 straight metal members such as sche
matically shown in FIG. 3 at 4-2, 43, for magnetically
conductively interconnecting the ends of the ?ux mem
bers with the metallic member 41, there are employed
metallic sheets 55 extending throughout the entire relay
strip and bent to form riblike projections 56 directed lon
lies with its cars 46, 47 and rearwardly with its portion
48 upon the marginal rim or wall which delimits the
gitudinally of the relay strip, such strips having slots
corresponding tublike recess, in a de?ned position deter
formed therein through which the parts extend. These
mined by the brackets 45 in cooperation with the cutouts
plates have on the sides thereof which face the plates 57
33, in which position the free end of the flux member
an insulating insert and the slots formed therein are di
and the armature overlie the corresponding portion of the
mensioned so that they clamp fast on the ends of the
core member with the contact points 39 facing the con
flux members and on the magnetically conductive metal
tact point 34 on the ‘armature.
35 sheet 41. Accordingly, these plates have the plural func
Upon completion of the insertion of all parts of one
tion of providing ?ux paths and of fastening the insulat
layer,‘ the bottom layer in the assembly sequence which is
ing plates 57 in position, thereby also securing the coils
being. explained, the second carrier layer (second from
51 and 52 against inadvertent removal from the carrier.
the top in FIG. 3) is placed with its smooth and plane
The riblike extensions 56 bent from the members 55,
underside upon the ?rst layer. The second carrier layer
which embrace the ends of the magnetically conductive
metal sheet or strip 41 provide for good ?ux ?ow since
or member is thereupon in similar manner equipped with
the sum of the two air gaps between the sides thereof
the iron parts of the corresponding magnetic circuit and
?nally covered by a plane cover 53. It is of course evident
that more than two layers of magnetic circuits can be
which embrace the corresponding parts remains always
cross-sectional areas of outwardly projecting parts small.
‘Similar measures can be employed in the production of
the same regardless of the position of the ?ux members
provided between an appropriate number of carrier layer 45 extending therebetween.
The soldering tabs 40 of the core members project like
members. The metallic sheets or strips 42, 43 are not
wise from the carrier body, but extend in a direction
inserted between the carrier layers but are subsequently
perpendicular to the direction in which the flux members
placed upon the laterally outwardly protruding ends of
and the metallic member 41 extend therefrom.
the flux members and the similarly protruding ends of
As has been mentioned before, an advantage of th
the metallic member 1&1.
core member which is common to a plurality of relay
The parts of the assembled magnetic circuits are ?xed
sets, resides in the fact that the described structure re
in position by fusing the carrier layer members together,
quires only two embodiments thereof. The portions ex
preferably employing for this purpose a glazing provided
tending from the carrier body can be made smaller, to
on the involved surfaces of the carrier layers which has
a lower melting point than the ceramic material of which 55 facilitate the bonding or fusing of the carrier layers, by
using lnstead of the soldering tabs wires connected with
the carrier layers are made, thus forming a good bond
the core members and. extending therefrom to the outside
between the individual layers.
of the carrier body, such Wires functioning as soldering
As will be apparent from E6. 3, the contacts con
trolled in each layer by the oppositely disposed armatures 60 tabs. It must be considered in this connection that the
production of airtight bonds is facilitated by keeping the
are respectively positioned within closed chambers or
The bonding or fusing can be effected in a
vacuum furnace, thereby evacuating these chambers.
Appropriate measures may be employed for ?lling these
individual relay sets. The same applies for the outward
ly extending parts of the flux members or armatures. A
further advantage of such measure resides in the fact that
movably journalled provides the advantage that they may
the iron parts may be made of iron which can be selected
be relatively short, thus requiring only correspondingly
independent of its coefficient of expansion and without
short sealing seams between the carrier layers. Another
revard to the kind of material utilized for the carrier
advantage, as compared with previously known sealed-in 70 parts.
contacts resides in the fact that the sealing areas are not
Changes may be made within the scope and spirit of
put under stress incident to the armature operation and
the appended claims which de?ne what is believed to be
therefore are not detrimentally affected. The structure
new and desired to have protected by Letters Patent.
according to the invention results, as compared with struc
I claim:
tures employing resilient contact springs, in considerable 75
1. A relay set constructed of at least two relays, com
chambers with a protective gas.
The use of flux members on which the ar'matures are
‘12. ‘A relay set according to claim 1, comprising a plu
prising at least two movable armatures disposed serially
in longitudinal direction thereof with their free ends in
rality of magnetic circuits disposed in superposed layers,
mutually facing position, at least one core member dis
posed in a position extending perpendicularly to the Ion;
gitudinal direction of said armatures, the free ends of
tures of said magnetic circuits.
13. A relay set according to claim 12, comprising in~
and coil means which are common to superposed arma
said armatures overlapping said core member and form
sulating carrier members enclosing therebetween said lay~
ing working air gaps therewith, energizing means for
setting up flux to cause attraction of the respective arma
parts of said magnetic circuits in assigned cooperating
tures by said core member, and means for connecting
ers of magnetic circuits and bonded together to hold the
to utilize such elements as electrical‘ conductors.
14. A relay set according to claim 13, wherein said
insulating carrier members are surface-glazed ceramic
2. A relay set according to claim 1, wherein said arma
tures extend in a single plane.
3. A relay set according to claim 1, comprising means
insulating carrier serves as a carrier for coils allotted to
current to said armatures and said core member so as 10
members which are bonded together by fusing.
15’. A relay set according to claim 13, wherein said
carried by the respective armatures forming contact 15 the relay set.
16. A relay strip composed of a plurality of relay sets
points at the free ends thereof, a pair‘ of springs carrying
constructed according to claim 13, wherein the respective
contact points for cooperation with the contact point
layers of insulating carrier members extending in one
means of each‘ armature, said springs‘ being connected
plane are combined in an integral structural carrier
with said core member and laterally extending therefrom
in a direction perpendicular to the longitudinal direction 20 member.
thereof with the corresponding‘ contact pointsv lying free
of said core member in alignment with the ends of the
respective armatures.
4. A relay‘ set according to claim 1, comprising means
17. A relay strip according to claim 13, wherein layers
of the insulating carrier members are assembled to form
a double-comblilze structural unit including serially re
lated spaced apart portions which enclose the armature
for magnetically conductively interconnecting with 25 means and having centrally positioned web means for said
core member.
said core member the ends of the respective armatures
18. A relay strip according to claim 17, wherein said
which are remote from the contact carrying ends thereof.
insulating carrier members form in- assembled position
5. A relay set according to claim 1, comprising a rela
individually enclosed chambers for respectively receiving
tively rigid ?ux member for each armature, means for
movably disposing the armatures on their respective flux 30 the parts of the individual relay sets which carry the con
tact points‘.
members to extend parallel to the longitudinal direction
19. A relay strip composed of a plurality of relay sets
thereof with the free ends of said ar'matures disposed
constructed according to claim 1, comprising a core mem
within air gaps formed between the respective ?ux mem
ber common to‘ all relay sets and including the core mem»
bers and said core member.
bers which are respectively individual to said sets.
6. A relay set according to claim 5, comprising means
for magnetically conductively connecting with said core
member the ends of said ?ux members which face away
7. A relay set according to claim 5, comprising a spring
20. A relay strip according to claim 19, comprising
means- for magnetically conductively but electrically in
sulatingly interconnecting the outwardly extending ends
of. the respective armatures and ?ux members, and at least
for connecting each armature with its respective ?ux 40 one magnetically conductive member secured to said core
member and extending in parallel with said armatures.
member so as to hold such armature in position thereon
and to impart restoring power thereto.
8. A relay set according to claim 7, wherein the ends
of. said spring‘ are respectively welded to- said ?ux mem
ber and‘ to said armature
9. A relay set according to claim 8, wherein said
spring extends for its entire length between the armature
and said ?ux member.
10. A relay set according to claim 1, comprising an en
ergizing coil allotted to and surrounding each armature.
11. A relay set according to claim 1, comprising a
holding coil allotted to and surrounding each armature.
References Cited in the ?le of this patent
Sundh _______ __»_______ __ June 6, 1911
Stibitz “a ____________ __ Dec. 15,
Wagenseil‘ ____________ __ Oct. 31,
Hickman _____________ __ Aug. 14,
Farkas _______________ __ Sept. 9,
Braumann ____________ .._ Dec. 2,
Reed‘ ________ _s ______ __ Oct. 7, 1919
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