HF coaxial connector having a plug module and a socket module

An HF coaxial plug connector includes coaxial plugs disposed in a multiple plug housing-coaxial plug module, and coaxial sockets disposed in a multiple socket housing-coaxial socket module for use in circuits, especially in printed circuit board technology. Coaxial outer conductors of the coaxial socket module are at least partly integrated with its housing in the form of sheaths which act as coaxial outer conductors and extend in the housing toward its insertion side for the coaxial plug module. Insulating plastic sheaths which are inserted into these thus-created coaxial outer conductors, receive coaxial inner conductors therein.

BACKGROUND OF THE INVENTION 
1. Field of the Invention 
Circuits for high-frequency electromagnetic waves require coaxial plug 
connectors, which must have practically no abrupt changes in wave 
resistance within a line segment that they represent, in order to provide 
effective transmission of electromagnetic energy. In the currently 
conventional realization of such circuits in printed circuit board 
technology, multiple coaxial plug connectors, and specifically coaxial 
plug connectors and angled coaxial plug connectors in a high packing 
density, are employed. Their electrical connection to the printed circuit 
board is carried out through the use of terminal pins that can be 
press-fitted into the printed circuit board. 
The invention relates to an HF coaxial plug connector, including coaxial 
plugs disposed in a multiple plug housing-coaxial plug module, coaxial 
sockets disposed in a multiple socket housing-coaxial socket module, the 
coaxial plug module and the coaxial socket module each secured to a base, 
for instance a printed circuit board and, in a state in which they are 
secured to the base, make a conductive connection, through the use of 
terminal pins thereof connected to the coaxial conductors at the bottom, 
with terminals associated with them on the base, coaxial inner conductors 
of the coaxial plug module having bottom terminal pins each disposed and 
insulated in bores in its housing acting as coaxial outer conductors, 
coaxial inner conductors of the coaxial socket module having bottom 
terminal pins disposed and insulated against respective coaxial outer 
conductors in receiving openings of its housing, and the coaxial socket 
module and the coaxial plug module having the same number of coaxial plugs 
and coaxial sockets in the same configuration, as well as a device for 
mutual centering thereof on sides where they connect. 
Known HF coaxial plug connectors, as disclosed, for instance, in U.S. Pat. 
No. 5,169,343, require especially high production technology, effort and 
expense, if the coaxial plug connector is to have adequate flexibility in 
terms of the number of its coaxial terminals. 
As U.S. Pat. No. 5,169,343 clearly shows with the aid of its drawings, the 
housings of the coaxial plug module and coaxial socket module are each 
constructed to receive six coaxial plugs and coaxial sockets, 
respectively, which are combined in pairs into subsidiary plugs and can be 
inserted into their housings. In this way it is possible to equip the 
housings of the coaxial plug module and coaxial socket module with two, 
four or six associated coaxial plugs and coaxial sockets, depending on the 
need and the particular application. The major production technology 
expense for such coaxial plug connectors is due to the unavoidable play 
which is needed for assembly, between the subsidiary plugs to be inserted 
into the housings, the attendant eccentricity of the coaxial plug view 
relative to the theoretical center, and impermissible skewed positions of 
coaxial plugs and/or coaxial sockets upon being press-fitted into 
receiving openings on the housing or the subsidiary plug. In this case in 
order to avoid impermissible incremental lengths in the positional 
tolerances, only very close tolerances can be allowed in the production of 
the individual components, leading to correspondingly high production 
costs. 
As is shown by another reference, European Patent Application 0 582 960 A1, 
the aforementioned production cost of such coaxial plug connectors for the 
coaxial plug module can be substantially reduced by integrating the 
coaxial plugs with a housing of conductive material, in the form of a 
monoblock. The monoblock forms the coaxial outer conductors in the form of 
bores. Insulating plastic sheaths are inserted into those bores and the 
coaxial inner conductors are retained within the insulating plastic 
sheaths. Conversely, in the coaxial socket module, the coaxial sockets are 
press-fitted into receiving openings of a housing that is degenerated to 
form a base plate. Once again, the aforementioned problems in terms of the 
incremental length of the positional tolerances arise. The coaxial plug 
connector which is known from that last reference has the further 
advantage, over the coaxial plug connector known from U.S. Pat. No. 
5,169,343, that the coaxial plug module and coaxial socket module can be 
equipped selectively for 1, 2, 3, 4, 5 or 6 coaxial plug connectors. In 
other words, the quantitative versatility is not merely two but one. 
SUMMARY OF THE INVENTION 
It is accordingly an object of the invention to provide an HF coaxial plug 
connector, specifically for a coaxial socket module, which overcomes the 
hereinafore-mentioned disadvantages of the heretofore-known devices of 
this general type and which makes fewer demands in terms of production 
variations and therefore can be produced more economically. 
With the foregoing and other objects in view there is provided, in 
accordance with the invention, an HF coaxial plug connector, comprising a 
coaxial plug-coaxial plug module including a multiple plug housing having 
bores acting as coaxial outer conductors, and coaxial inner conductors 
having bottom terminal pins disposed and insulated in the bores; a coaxial 
socket-coaxial socket module including a multiple socket housing having an 
insertion side for the coaxial plug module, sheaths extended in the 
housing toward the insertion side, the sheaths having receiving openings 
and a tubular foot part with a widened outer diameter, preferably in a 
stepped manner, conductive coaxial outer conductors at least partially 
integrated with the housing, insulating plastic sheaths inserted into the 
coaxial outer conductors, and coaxial inner conductors disposed in the 
insulating plastic sheaths and having bottom terminal pins disposed in the 
receiving openings and insulated against the coaxial outer conductors; the 
coaxial socket module and the coaxial plug module having an equal number 
of coaxial plugs and coaxial sockets in the same configuration, connecting 
sides, and a device for mutual centering on the connecting sides; and each 
of the coaxial plug module and the coaxial socket module to be secured to 
a base, for instance a printed circuit board, for making a conductive 
connection between the terminal pins and associated terminals on the base. 
The invention is based on the recognition that in a way similar to the 
monoblock structure for the housing of the coaxial plug module, in the 
coaxial plug connector of European Patent Application 0 582 960 A1, the 
coaxial outer conductors can be integrated into the housing in the housing 
of the coaxial socket module as well by providing that its receiving 
openings for the coaxial sockets are elongated to form conductive sheaths 
on the housing that are able to assume the function of coaxial outer 
conductors for the coaxial sockets. 
In accordance with another feature of the invention, the sheaths acting as 
conductive coaxial outer conductors of the coaxial socket module have a 
transition to the tubular foot part, a free end surface with an outside, 
slits extending in axial direction from the free end surface to the 
vicinity of the transition upon complete integration into the housing, and 
contact beads on the outside of the free end surface. 
In accordance with a further feature of the invention, the sheaths acting 
as conductive coaxial outer conductors of the coaxial socket module have 
an outside, a free end surface, and a metal spring ring with contact beads 
on the outside, the ring slipped onto the free end surface and connected 
firmly upon partial integration with the housing. 
In accordance with an added feature of the invention, the sheaths acting as 
conductive coaxial outer conductors of the coaxial socket module use the 
tubular foot part upon partial integration with the housing and have a 
free end with a surface, an actual plug part between the free end and the 
tubular foot part, a metal outer conductor tube pressed onto the 
insulating plastic sheath, and axial slits on the free end surface forming 
a radial spring crown; the radial spring crown has spring blades with free 
ends having an outside and contact beads on the outside of the free ends; 
and the insulating plastic sheaths receiving the coaxial inner conductors 
are inserted together with the metal outer conductor tubes pressed thereon 
into the tubular foot parts. 
In accordance with an additional feature of the invention, the sheaths of 
the housing in the coaxial socket module acting as conductive coaxial 
outer conductors have a tubular inside diameter offset at least once in a 
stepped manner, and the insulating plastic sheaths to be inserted therein 
have a tubular outside diameter offset at least once in a stepped manner, 
in each case along their length, forming annular edges acting as mutually 
associated stops for the insulating plastic sheaths to be thrust into the 
sheaths until meeting a stop. 
In accordance with yet another feature of the invention, the housing of the 
coaxial plug module is an angled coaxial plug connector part or a straight 
coaxial plug connector part. 
In accordance with yet a further feature of the invention, the housing of 
the coaxial socket module is a straight coaxial plug connector part or an 
angled coaxial plug connector part. 
In accordance with yet an added feature of the invention, the terminal pins 
in the bottom of the housing for the coaxial outer conductors of the 
coaxial plug module and the coaxial socket module are press-fitted 
individually into conductive holes in a wall or secured multiply to ground 
strips and press-fitted into conductive slots in a wall. 
In accordance with yet an additional feature of the invention, the coaxial 
plug module is an angled coaxial plug connector part, the housing of the 
coaxial plug module has striplike openings in a back wall for mounting the 
angled coaxial inner conductors, and a common cap closes the openings. 
In accordance with again another feature of the invention, the bores acting 
as coaxial outer conductors in the housing of the coaxial plug module have 
at least one inner annular edge, the insulating plastic sheaths receiving 
the coaxial inner conductors have at least one outer annular edge and are 
thrust from a front side into the bores until meeting a stop, and the 
angled coaxial inner conductors are thrust into the insulating plastic 
sheaths from a rear side. 
In accordance with again a further feature of the invention, the bores 
acting as the coaxial outer conductors in the housing of the coaxial plug 
module are metal outer conductor tubes in an insertion region of the 
coaxial plugs, the tubes are inserted from a front side into the bores 
until meeting a stop, and the bores have a widened diameter therefor in 
the insertion region. 
In accordance with again an added feature of the invention, the terminal 
pins of the coaxial plug module and of the coaxial socket module have 
press-fit contact heads. 
In accordance with again an additional feature of the invention, the 
housings of the coaxial plug module and the coaxial socket module are 
plastic housings at least partially having a metallizing, and the 
metallizing has a layer thickness at least equal to a depth of penetration 
of electromagnetic waves to be transmitted through the coaxial plug 
connector. 
In accordance with still another feature of the invention, the housings of 
the coaxial plug module and the coaxial socket module have an outer wall 
with at least one groove having an opening and a center rib in the groove 
acting as a separation lug and not protruding past the opening of the 
groove; the coaxial plug module and the coaxial socket module match one 
another and the at least one groove is disposed between two respective 
columns or lines of the coaxial plugs and coaxial sockets disposed in a 
pattern of columns and lines; and a severing created by the groove on the 
housing of the conductive connection between the coaxial outer conductors 
of the coaxial plug module and the coaxial socket module is brought about 
by breaking away the center rib in the groove. 
In accordance with still a further feature of the invention, at least one 
of the plastic housing of the coaxial plug module and the plastic housing 
of the coaxial socket module is completely metallized, and the at least 
one groove with the center rib in the outer wall of at least one of the 
housing of the coaxial plug module and the housing of the coaxial socket 
module annularly encompasses at least one of the housings. 
In accordance with still an added feature of the invention, at least one of 
the plastic housing of the coaxial plug module and the plastic housing of 
the coaxial socket module is covered completely with a metallizing, the 
metallizing of the housing is present essentially to an extent necessary 
for electrically conductive properties of the sheaths including the 
terminal pins in the housing of the coaxial socket module and the bores 
including the terminal pins in the housing of the coaxial plug module. 
In accordance with still an additional feature of the invention, the 
severing of the conductive connection between the coaxial outer conductors 
of the coaxial plugs and coaxial sockets, disposed in a pattern of columns 
and lines, of the respective coaxial plug module and coaxial socket 
module, is effected by partial linear removal of the metallizing on the 
housing, given a matching configuration on the coaxial plug module and the 
coaxial socket module, between two columns or two lines of the coaxial 
plugs or coaxial sockets, for instance by laser machining. 
In accordance with a concomitant feature of the invention, the housings of 
the coaxial plug module and the coaxial socket module are metal housings 
of die-cast metal, for instance die-cast zinc. 
Other features which are considered as characteristic for the invention are 
set forth in the appended claims. 
Although the invention is illustrated and described herein as embodied in 
an HF coaxial plug connector, it is nevertheless not intended to be 
limited to the details shown, since various modifications and structural 
changes may be made therein without departing from the spirit of the 
invention and within the scope and range of equivalents of the claims. 
The construction and method of operation of the invention, however, 
together with additional objects and advantages thereof will be best 
understood from the following description of specific embodiments when 
read in connection with the accompanying drawings.

DESCRIPTION OF THE PREFERRED EMBODIMENTS 
Referring now to the figures of the drawings in detail, there is seen an 
exemplary embodiment of a coaxial plug connector with six coaxial plug 
connectors, in which FIG. 1 shows a coaxial plug module 1 in the form of 
an angled coaxial plug connector part, and FIG. 2 shows a coaxial socket 
module 2 in the form of a straight coaxial plug connector part. A housing 
3 of the coaxial plug module 1 and a housing 4 of the coaxial socket 
module 2 may intrinsically be metal housings, for instance made of 
die-cast zinc. However, in the exemplary embodiments shown in the 
drawings, the housings 3 and 4 are either fully or only partially 
metallized plastic housings. A layer thickness of the metallizing is at 
least equal to a penetration depth of electromagnetic waves to be 
transmitted through the coaxial plug connectors. In the illustration of 
the coaxial plug module 1 in FIG. 1 and of the coaxial socket module 2 in 
FIG. 2, the housings 3 and 4 are fully metallized. Coaxial inner 
conductors have not yet been inserted into coaxial outer conductors of the 
housings 3 and 4. The coaxial outer conductors are not visible in FIG. 1, 
but they are suggested there by a striplike cap 10 inserted into a back 
wall 5 and in FIG. 2 they are suggested by receiving openings 11 that are 
visible in a bottom 6. 
The six coaxial plug connectors of the two modules are disposed on the 
housings in a pattern of columns and lines with three columns and two 
lines, as is shown especially well at the bottom 6 of the housing 4 of the 
coaxial socket module 2 in FIG. 2, with its six receiving openings 11 for 
receiving the coaxial inner conductors. Centering pins 8 and 9 
respectively protrude from the bottom 6 of the coaxial socket module 2 and 
a bottom 7 of the coaxial plug module 1 and when they are placed on a 
base, preferably a printed circuit board, they engage recesses associated 
with them there. These bases are not shown in FIGS. 1 and 2 nor in the 
other drawings. 
Due to the surface-covering metallizing of the housings 3 and 4, all of the 
coaxial outer conductors of the coaxial plug module on one hand and of the 
coaxial socket module 2 on the other hand are electrically conductively 
connected to one another. As a rule, this is desirable, since the 
potential of the coaxial outer conductors is typically at ground. For 
instance, if the two coaxial outer conductors represented by their 
receiving openings 11 on the right can be separated as needed in terms of 
potential from the other four coaxial outer conductors, on one hand in the 
coaxial socket module 2 and on the other hand in the coaxial plug module 
1, depending on the production and metallizing of the housings 3 and 4, 
then in principle there are two possible ways to do this. 
One possibility is to impress a groove 12, with a center rib 13 acting as a 
separation lug, into the wall of the housing when the housings 3 and 4 are 
made. FIG. 1a shows a portion of the groove 12 including its center rib 13 
on a larger scale. The groove 12 with its center rib 13 encompasses the 
housing 3 and the housing 4 between the two coaxial outer conductors on 
the right and the four coaxial outer conductors on the left in the 
housings 3 and 4 of the coaxial plug connector. The center rib 13 should 
not protrude past the upper edge of the groove 12. The already-described 
potential separation between the coaxial outer conductors for the coaxial 
plug module 1 and the coaxial socket module 2 can be brought about 
retroactively at any time as needed by breaking away the center rib 13, 
since the rated breaking point of the center rib 13 is not metallized. 
The groove 12 in the housing shown in FIGS. 1 and 2, with its center rib 
13, can also be shifted to the left, for instance, on the housings 3 and 
4, so that a retroactive potential separation of the two coaxial outer 
conductors on the left from the other four coaxial outer conductors on the 
right can be brought about therewith. A groove 12 which is disposed in the 
housing, has a center rib 13, extends perpendicular to the direction shown 
in FIGS. 1 and 2 and is located between each two lines of three coaxial 
outer conductors around the housings 3 and 4, enables a retroactive 
potential separation between the three upper and the three lower coaxial 
outer conductors. If three grooves 12 with a center rib 13 are disposed on 
the housing, or in other words if such grooves are disposed multiply on 
the housing, then the potentials of all six coaxial outer conductors can 
be separated from one another retroactively as needed. 
The other possibility for retroactive potential separation provides for 
partially removing the metallizing annularly, for instance by laser 
machining, instead of providing one or more grooves 12 with a center rib 
13 that can be broken out between the coaxial outer conductors on the 
periphery of the housings 3 and 4. Naturally, both possibilities can also 
be employed simultaneously for a retroactive potential separation. Noting 
once again that the coaxial outer conductors are suggested in FIG. 2 by 
the six receiving openings 11 for the coaxial inner conductors in the 
bottom 6 of the housing 4, the electrically conductive connection of the 
coaxial outer conductors of the coaxial plug module 1 and the coaxial 
socket module 2 is made through the use of terminal pins 14, which are 
used in this case by being secured individually or multiply to ground 
strips 15. The terminal pins 14 are provided with press-fit contact heads 
16 for their electrically conductive connection with terminals associated 
with them on a base or a printed circuit board. Individual terminal pins 
14 are inserted into metallized holes 17 in the bottom wall 6, where they 
are retained in a press fit. Metallized wall slots 18 are provided in the 
bottom 6 in order to secure the terminal pins that are secured to the 
ground strips 15. A firm seat of the ground strips 15 in the wall slots 18 
is assured by dimple-like recesses 19 and locking hooks 20 that are 
attached to the ground strips 15. The choice and disposition of the wall 
holes 17 and the wall slots 18 in the bottom 6 for securing the terminal 
pins 14 depends, as FIG. 2 shows, on what possibilities for retroactive 
potential separation between the coaxial outer conductors of the coaxial 
plug module 1 and the coaxial socket module 2 are to be provided. 
It will also be noted herein, merely for the sake of completeness, that in 
the coaxial plug module 1 of FIG. 1, the terminal pins 14 are secured 
individually or multiply in conjunction with the ground strips 15 to its 
bottom 7, in the same way as they are secured to the bottom 6 of the 
coaxial socket module 2 of FIG. 2. 
In a distinction from FIG. 2, in the housing 4 of the coaxial socket module 
2 shown in FIG. 3, only the bottom 6 is provided on its outside with a 
metallizing M. This only partially provided metallizing M accordingly also 
extends to the receiving openings 11 and to the inner wall of the coaxial 
outer conductors that are integrated with the housing 4 and that will be 
described in further detail in regard to FIGS. 5-10. Therefore, in order 
to provide a retroactive potential separation as in FIG. 2, the groove 12 
with the center rib need not be provided annularly around the 
circumference of the housing 4 in this case but only on the outside of the 
bottom 6. A corresponding partial metalization may also be provided for 
the housing 3 of the coaxial plug module 1. 
The partial metallizing of the housing 4 of the coaxial socket module in 
FIG. 3 can be carried out even further, since the outside of the bottom 6 
of the housing 4 after all need merely be provided with a metallizing M 
around the receiving openings 11 to the extent necessary for contact with 
the terminal pins 14. Arbitrary desired potential separations among the 
coaxial outer conductors can then be taken into account at the same time. 
In the coaxial socket module 2 shown in FIG. 4, three metallizings M, 
which are each defined in terms of surface area over two receiving 
openings 11 for two coaxial outer conductors, are provided on the bottom 6 
of the housing 4, and a potential separation is brought about through the 
use thereof in such a way that the coaxial socket module 2 has three 
independent pairs of coaxial outer conductors. The coaxial plug module 1 
can be partially metallized in a corresponding way. 
FIG. 5 shows a portion of a coaxial socket module 2 of FIGS. 2-4, which 
allows one to look into the housing 4 with its coaxial sockets 21 from an 
insertion side 22, and in which the coaxial outer conductors are fully 
integrated with the housing 4. As the sectional view of one of the coaxial 
sockets 21 in FIG. 6 shows, the coaxial outer conductors are sheaths 23 on 
the housing, which are part of the bottom 6 of the housing 4 and extend 
from their receiving opening 11 in the bottom 6 into the housing 4 as far 
as its insertion side 22. The sheaths 23 have a foot part 24 which is 
widened in a stepped manner and they are provided with contact beads 25 on 
the outside of their free end surface. In order to achieve the coaxial 
outer conductor function of the sheaths 23, at least their inner walls, 
including their contact beads 25, must be provided with a metallizing M. 
In order to allow the contact beads 25 to have radially yielding 
properties, the sheaths 23 have axial slits 26, which extend from their 
free end surface into the vicinity of their transition to the tubular foot 
part 24. 
Insulating plastic sheaths 27 are inserted into the metallized sheaths 23 
and receive metal coaxial inner conductors 28 inside them. The sheaths 23 
are offset twice in a stepped manner in their tubular inside diameter. In 
the same way, the plastic sheaths 27 are offset twice in their outer 
diameter. On one hand, these diameter offsets serve the purpose of 
adapting the wave resistance of the coaxial sockets 21. On the other hand, 
the annular edges created by these diameter offsets form stops 29 and 30, 
associated with one another, for the plastic sheaths 27 that are to be 
inserted into the sheaths 23 until they meet a stop. In order to provide a 
conductive connection of the coaxial inner conductors 28 with a terminal 
on the base associated therewith, the coaxial inner conductor 28 likewise 
merges at the bottom 6 of the housing 4 with a terminal pin 14, which is 
press-fitted or soldered into the end surface of the coaxial inner 
conductor 28 on the bottom 6 of the housing 4. 
If more stringent demands in terms of plug properties are made, then it is 
appropriate to only partially carry out the integration of the coaxial 
outer conductors with the housing 4. A first exemplary embodiment thereof 
is shown by FIGS. 7 and 8, which correspond to FIGS. 5 and 6. Sheaths 31 
of the housing that act as coaxial outer conductors in this case have no 
axial slits but instead are crowned with a metal spring ring 32. The 
spring ring 32 has radially yielding contact beads 33 on the outside and 
is slipped onto an end surface 34 of the sheaths 31, with the end being 
offset in a stepped manner in its outer diameter. In order to achieve 
their coaxial outer conductor function, at least the inner walls as well 
as the end surfaces 34 of the sheaths 31 that are offset in a stepped 
manner must be provided with a metallizing M. 
A second exemplary embodiment of a partial integration of the coaxial outer 
conductors is shown in FIGS. 9 and 10, which correspond to FIGS. 7 and 8. 
In a distinction from FIGS. 7 and 8, an actual insertion or plug-in part 
of sheaths 35, between their free end surface and their tubular foot part 
24, includes a metal outer conductor tube 36. The metal outer conductor 
tube 36 is divided on the free end surface of the sheaths 35 by axial 
slits 37 to form radial spring blades 38, which are provided with contact 
beads 39 on the outside of their free ends. 
The metal outer conductor tube 36 is thrust onto an insulating plastic 
sheath 40 up to a stop 41. This plastic sheath 40 receives the coaxial 
inner conductors 28 within itself, and the metal outer conductor tube 36 
is firmly anchored in a press fit on the plastic sheath 40. The stop 41 of 
the plastic sheath 40 is realized in the region of the tubular foot part 
24, because of its stepwise-offset outer diameter. In this case as well, 
the insulating plastic sheath 40 is thrust, with the metal outer conductor 
tube 36 slipped onto it, into the tubular foot part 24 until it meets the 
stop 42. The stop 42 is obtained on one hand by the stepped offset tubular 
inside diameter of the tubular foot part 24 and on the other hand by the 
likewise stepped offset tubular outer diameter of the metal outer 
conductor tube 36. In order to enable the metal outer conductor tube 36 to 
achieve the desired coaxial outer conductor function, at least the inner 
wall of the tubular foot part 24 must have a metallizing M, specifically 
continuously as far as the metallizing M on the outside of the bottom 6 of 
the housing 4 having the terminal pins 14. 
FIG. 11 is a sectional view of the coaxial plug module 1 of FIG. 1, which 
illustrates that in this case as well the coaxial outer conductors are 
integrated with its housing 3, in the form of bores 43. Insulating plastic 
sheaths 44 and 45 are thrust into these bores 43 from the front side 
(insertion side) until they meet respective stops 46 and 47. Angled 
coaxial inner conductors 48 and 49 that are received within the plastic 
sheaths 44 and 45 are conversely thrust into the insulating plastic 
sheaths 44 and 45 from the rear side during assembly. To that end, as FIG. 
12 shows, striplike openings 50 are provided in the back wall 5 of the 
housing 3, and after assembly is concluded these openings are closed by 
the cap 10 that is common to all of them and is shown in a plan view in 
FIG. 13. The mounting of the angled coaxial inner conductors 48 and 49 on 
the housing also requires openings in the bottom 7 of the housing 3, which 
are not designated by reference numerals in FIG. 11 but are respectively 
closed off by insulating plastic parts 51 and 52 following the mounting of 
the coaxial inner conductors 48 and 49. Parts of the angled coaxial inner 
conductors 48 and 49 that extend out of the bottom 7 are passed through 
these plastic parts 51 and 52 in the process, as is shown by FIG. 11. In 
this case, ends of the angled coaxial inner conductors 48 and 49 toward 
the bottom are shaped by a swaging process to form terminal pins 53. 
However, as in FIGS. 6, 8 and 10, terminal pins 14 that can also be 
employed in this case are then press-fitted or soldered into the suitably 
shaped end surfaces of the coaxial inner conductors on the bottom 7 of the 
housing 3. 
A mutual shielding between coaxial plugs 54, which are disposed one above 
the other, in the region of the bottom openings that are not identified by 
reference numerals in FIG. 1 but are required for mounting the angled 
coaxial inner conductors 48 and 49, can be carried out in a simple way 
through the use of a ground strip 15 which is shown in FIG. 2 and is 
equipped with the terminal pins 14. The ground strip 15 is thrust upward 
from the bottom 7 of the housing 3 in-between the coaxial inner conductors 
48 and 49, as FIG. 11 shows. If the bores 43 are to perform the coaxial 
outer conductor function for the coaxial plugs 54, then they must be 
provided at their walls with a metallizing M, specifically continuously as 
far as the metallizing M with the terminal pins 14 on the outside of the 
bottom 7 of the housing 3. However, it must be noted that in the view of 
the coaxial plug module 1 shown in FIG. 11, the housing 3 is fully 
metallized, as in FIG. 1. 
In the coaxial plug module 1 of FIGS. 1 and 11 as well, if more stringent 
demands for quality are made of the coaxial plug connector, it may be 
appropriate to only partially integrate the coaxial outer conductors with 
the housing 3 of this coaxial plug connector. In FIG. 11, one such partial 
integration is shown for the lower coaxial plug 54. In this case, the 
coaxial outer conductor, which is formed by the bore 43 in the housing 3, 
is widened in its diameter, in the insertion region, to receive a metal 
outer conductor tube 55, which is thrust into the bore 43 until it meets a 
stop 56. 
In the exemplary embodiments shown in the drawing, the coaxial plug module 
1 is shown as an angled plug connector part, and the coaxial socket module 
2 is shown as a straight plug connector part. However, although the 
invention is described in detail in terms of these exemplary embodiments, 
it may be achieved in the same way if conversely the coaxial plug module 
is a straight plug connector part and the coaxial socket module is an 
angled plug connector part. It is also possible for both plug connector 
parts to be either straight plug connector parts or angled plug connector 
parts.