CZ280700B6 - Receptacle for connecting a connection device to data network - Google Patents

Abstract

The connection socket (15) of the connection device to the data network comprises a printed circuit board (47) with a pair of BNC sockets (16, 17) and at least one functional socket (18) which are interconnected. In order to avoid, as far as possible, interruption of the coaxial data network system in the area of the connection socket (15), the printed circuit board (47) is designed as a multilayer structure, so that the conductive connections (43), like the coaxial cable, extend between two conductive surfaces (41, 42 ). The functional socket (18) is, for the same reason, surrounded by a closely adjacent first shielding sheet (44). The first plug portion (24) of the functional plug (23) of the respective connecting cable (32) is also surrounded by the third shielding plate (46), so that the coaxial cable arrangement continues here as well. ŕ

Description

Connection socket for data network connection equipment

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a data network which pairs with at least two electrically conductive contact housings on opposite inner sides of a plastic housing contact the seeing functional plugs, the BNC sockets being directly connected via the tactile tongues of the first pair of contact tongues and the respective printed circuit board conductors arranged on a first flat side of the printed circuit board, on the second flat side of which is spaced parallel to the first flat side, a first conductive surface overlying the large-area conductive connections is provided, which is electrically conductively connected to shielding connections of BNC sockets and simultaneously with the contact tongues of the second pair of contact tongues.

The connection sockets for the connection device consist of a plastic housing, a plosBNC socket plate and at least one functional tongue socket which is not inserted between them from each other.

Said cable connection socket is known, for example, from German utility model DE-Gm 90 00 754. Data network. it serves primarily to be able to interconnect several data processing devices or to connect them to a central computer or the like. For this purpose, a shielded coaxial cable is usually permanently installed, along which a number of connection sockets are connected along the length, so that the devices can be connected at different points in the space or throughout the building as appropriate using suitable connection cables. The advantage of functional sockets, actually developed for telephone connection sockets, is that the data network is never interrupted, regardless of whether or not the connection cable is plugged in with its functional plug. Therefore, no inattention error can occur. The disadvantage lies in the fact that the solution is at the limit of the technical requirements imposed on such networks, for example in terms of the radiation level, which can only be met at the limit of the permissible framework. The reason is that the coaxial system is interrupted in the area of the connection sockets and function plugs. From the above-mentioned utility model, it is known that the conductive connections on the printed circuit board in the connection socket can be shielded separately by means of a large copper foil arranged opposite.

There are also known connection sockets of a similar type, the housing of which is made of die-cast zinc. Similarly, the functional plug of the connecting cable is encased in a die-cast zinc casting. By encapsulating such interference, interfering radiation and the intrusion of interfering signals into the network are avoided, but the coaxial system still remains interrupted, resulting in transmission loss and signal distortion at the very limit of admissibility. In addition, the described encapsulation is very expensive, and on the other hand, in many applications it is desirable that no grounded metal parts be freely accessible in order to avoid spark discharges of electrostatic charges.

-1GB 280700 B6

SUMMARY OF THE INVENTION It is an object of the present invention to provide such a connection socket construction of this kind which makes it possible to meet the conditions for signal transmission in a safer and reliable manner even in series production.

SUMMARY OF THE INVENTION

This object is achieved and the drawbacks of the known connection sockets are largely eliminated by a connection socket for a data network connection device according to the invention, characterized in that an insulating layer is provided above the first flat side of the conductive circuit board. extending over a large area over the conductive joints at a distance from the first flat side and the parallel third flat side thereof, the second conductive surface being electrically connected to the first conductive surface and to at least three outer sides of the plastic housing of the first functional receptacle substantially perpendicular adjoining the base plate, a first shielding sheet is provided, which is electrically connected to the conductive surfaces.

Preferably, the printed circuit board is multilayered and consists of outer layers formed by a first conductive surface and a second conductive surface and a central layer formed by conductive connections.

It is further preferred that the first shielding sheet is approximately U-shaped and overlaps two mutually parallel flat sides and one perpendicularly oriented narrow side of the plastic housing, the first shielding sheet being provided with a plurality of integrally formed conductive surfaces only areas.

In addition, it is advantageous to enclose the narrow side of the housing with a pair of contact tongues.

soldering tongues, which are directly adjacent to the first plastic shielding plate

Preferably, the first shielding plate is provided with a plurality of integrally formed and resiliently projecting lamellae from the plastic housing for contacting the inner wall of the third shielding plate of the functional fork.

Advantageously, the first functional receptacle is provided with two adjacent pairs of contact tongues which in parallel form a connection with the BNC sockets and are arranged near the narrow side of the plastic housing surrounded by the first shield plate while the other pairs of contact tongues are in contact with The shielding connection is arranged at the narrow side of the plastic housing, where there is a recess in the first shielding plate.

Furthermore, it is advantageous if the connection socket is provided with two functional sockets, the contact tongues of which are electrically connected in series, each of these functional sockets being separately encircled with a first shielding plate.

Finally, it is advantageous if the plastic housing is two-piece and comprises a printed circuit board together with a first functional socket arranged thereon, which is surrounded by a first shielding plate.

-2GB 280700 B6

The conductive connections on the printed circuit board are thus closed on both sides between the shading surfaces, creating a situation similar to the coaxial cable. Also, the shield plates placed close to each of the functional sockets are at a distance which is characteristic of the coaxial system from the contact tabs. Similarly, the plug part of the functional plug is encircled by the shielding plate. It is understood that the shield plates of the functional socket and the functional plug are interlocked in the manner of the socket and the plug. In this way, the coaxial system of the data network is, as far as possible, continually maintained at the connection points of other devices. On the outside, the entire system is insulated and the connection socket can still be made with a plastic housing in the usual way. The connection sockets of this design are also compatible with unshielded functional plugs.

BRIEF DESCRIPTION OF THE DRAWINGS

The principles of the invention and other advantages and advantages achieved by this solution will be further elucidated on non-limiting examples of its embodiment, which are described on the basis of the accompanying drawings, which show:

FIG. 1 shows the electrical connection of a schematically indicated shield according to the invention,

FIG. 2 shows a cross section of a printed circuit board according to the invention,

- FIG. 3 shows a side view of a connection socket according to the invention for flush-mounted installation, with some components only schematically indicated,

- Fig. 4 is a perspective view of the functional drawer with the shielding plate in the unfolded state prior to installation,

Fig. 5 is a side view of a functional plug for a connection socket according to the invention with the upper half of the housing removed, and

FIG. 6 is a cross-sectional view of the receptacle and plug just prior to insertion, with a portion to the right of the median plane showing a section in the plane 6r-6r of FIG.

DETAILED DESCRIPTION OF THE INVENTION

In the wiring diagram shown in FIG. 1, the incoming data bus 11 is connected to the first BNC plug 12. The outgoing data bus 13 is connected to the second BNC plug 14. Between these BNC plugs 12, 14 there is only a schematically indicated connection socket 15, which mainly comprises two BNC plugs 16, 17 for connecting the BNC plugs 12, 14.

The connection socket 5 further comprises two functional sockets 18, 19. These functional sockets 18, 19, which are identical, have a first pair of contact tongues formed in a pair of opposed contact tongues 21, 22, which contact each other electrically conductively when no functional plug is inserted, as shown in the second functional drawer 19. However, if a functional plug is inserted, the plug is inserted

As shown in the first functional receptacle 18 on the left side, the contact tabs 21, 22 will be spaced apart.

The functional fork 23 is provided with a first pair of contact tabs formed by two contact tabs 25, 26 arranged opposite each other on opposite outer sides of the first plug portion 24. These contact tabs 25, 26 are connected with signal wires 27, 28 which are insulated from each other and electrically shielded. Opposite ends of these signal conductors 27, 28 are interconnected with the central pin 29 of the third BNC-plug 31. The two signal conductors 27, 28 together with the functional plug 23 and the third BNC-plug 31 form a prefabricated duplex connection cable 32 for connecting the data processing device 33 to the data network.

The signal path here proceeds from the incoming data bus 11 via the central pin 34 of the first BNC plug 12 to the central contact tube 35 of the first BNC socket 16 and from there to the first contact tongue 21 of the first functional socket 18 and through the third contact tongue 25 the first signal conductor 27 to the central pin 29 of the third BNC plug 33. Here the signal path splits both to the data processing device 33 and secondly through the second signal conductor 28 back to the fourth contact tongue 26, from where it passes through the second contact tongue 22 socket 18 and through the contact tongues 21, 22 of the second functional socket 19 to the central contact cavity 36 of the second BNC socket 17, from where the final signal path through the central pin 37 of the second BNC plug 14 passes into the outgoing data bus 13.

It is not shown in FIG. 1 that each of the functional sockets 18, 19 is provided with a further pair of contact tongues located in a plane below the illustrated contact tongues 21, 22, which need not have any switching functions and are electrically connected to the first shields 38 BNC- Similarly, the functional fork 23 is provided with a second pair of contact tabs which are connected in parallel to the second shields 39 of the signal wires 27, 28 and are electrically connected to the first shields 38 via the second pair of contact tabs.

Furthermore, it is not shown in FIG. 1 that each of the functional sockets 18, 19 is preferably provided with a further pair of contact tongues arranged in a plane above the illustrated contact tongues 21, 22, which are electrically connected in parallel with the illustrated contact tongues 21, 22. The functional fork 23 is also provided with another corresponding pair of contact tongues. Therefore, if there is a faulty contact at some point, the parallel contact will reliably assume its function - also not shown.

1 schematically shows a first conductive surface 41 and a second conductive surface 42 on both sides of the printed circuit boards 43, as well as shielding plates 44, 45 in the area of the functional sockets 18, 19, all these shielding elements being connected to the first shielding Also, the functional fork 23 is provided with a third shielding plate 46 which is electrically connected to the second shielding 39.

-4GB 280700 B6

FIG. 2 is a schematic cross-sectional view of a printed circuit board 47 that is multilayered. Conductive joints 43 are applied on the first flat side 48 of the base plate 49, while on the second flat side 51 there is a first conductive surface 41. Above the first flat side 48 is an insulating layer 52, on whose outer flat side 53 a second conductive surface 42 is arranged. In the two conductive surfaces 41, 42, which extend across the entire surface of the printed circuit board 47, islands are formed in which the first through connections 54 are arranged to the internally arranged conductive connections. Conversely, the outer conductive joints bypass the second through joints 55 that connect the two outer layers.

Fig. 3 shows the overall construction of the connection socket 15. The printed circuit board 47 is provided with at least one functional socket 18 on its upper side and the BNC sockets 66, 7, which are designed as angular sockets protrude from the underside of the board 47 printed circuit board. The printed circuit board 47 is housed in a two-piece first plastic housing 60 consisting of a plate-shaped bottom 56 and a lid 57. In the bottom 56, recesses 58 are provided for the passage of the connection sleeves 59 of the BNC sockets 64, 17. The two-piece plastic housing 60 is firmly connected to the metal fastening ring 61, which serves to be fastened in the box 62 in the wall. At the top is a cover plate 63 on which a panel 64 of even greater contour is attached. The first functional drawer 18 is surrounded on three sides by the first shielding plate 44, as can be seen more clearly from the illustration in FIG. 4.

According to FIG. 4, the first functional drawer 18 is provided with a second prism-shaped plastic casing 66 with a pair of larger flat sides 67, 68 parallel to each other and a pair of narrow sides 69, 71 perpendicular to said flat sides 67, 68. an opening for receiving the respective functional plug 23 is formed on the side of the second plastic sleeve 66, and FIG. 4 also shows inwardly engaging contact tongues 21, 22 whose soldering tips project from the underside of the second plastic sleeve 66. The first shielding plate 44 is curved approximately U-shaped and consists of two large-area side arms 72, 73, which immediately abut the flat sides 62, 68, and a transverse arm 74, which abuts the narrow side 69. Said arms 72, 73 74 are further provided with an inwardly curved flange 75 which extends somewhat over the upper side of the second plastic sleeve 66. Said skirt 75 serves for reinforcement. The first shield sheet 44 is provided with a plurality of solder tabs 76 that are integrally formed with the first shield sheet 44 and protrude downward. In the legs 72, 73, Ί4, the E-shaped lamellae 77 are embossed by punching and are each slightly bent away from the second plastic case 66. These lamellas 77 serve to resiliently contact the shielding sheath of the functional plug 23, which will be described in more detail later.

The first shielding sheet 44 can be easily bent due to the U-shaped design shown in FIG. In the region of the open side of the U-shaped section is the narrow side 71 of the second plastic sleeve 66, in which the already described second pair of contact tabs, which are interconnected with the shielding, is arranged and thus instead of the missing side of the first shielding plate 44.

On the other hand, the pairs of contact terminals through which the signal passes are spaced inside the space shielded by the first shielding plate 44, which rests as a thin layer on the second plastic housing 66 and therefore occupies minimal space.

FIG. 5 shows a known form of a functional fork 23, shown by weak and partially dashed lines. The downwardly extending second plug portion 78 is spaced from one another by a plastic sleeve 79 which, when viewed from the insertion direction, is a rectangular ring. A third shielding plate 46 is disposed on the inside of this sleeve 79, between which and the second plug portion 78 with the contact tongues 25, 26 is an annular gap of rectangular shape. The outline of the third shielding sheet 46 is drawn in bolder lines for clarification. This third shielding sheet 46 is curved approximately in the shape of a U-shaped cross-section as shown in FIG. 6, with the U-profile arc 82 partially overlapping the second shields 39 of the signal conductors 27,28 of FIG. advantageously soldered. The two arms 83, 84 of the third screen 46 extend flat and substantially parallel to the contact tongues 25, 26 almost to the edge 85 of the functional fork 23.

and cover the two inner flat sides 66, 87 of the plastic sleeve 79. It can be seen from Fig. 5 that these arms 83, 84 extend from the right inner narrow side 88 to almost the opposite left inner narrow side 89, just as far as to laterally overlap the second pair of contact tongues which is towards the left inner narrow In this case, the second pair of contact tongues assumes the function of shielding instead of the third shielding plate 46, in which there is a recess at this point. This solution greatly simplifies the bending operations in the production of the third shielding sheet 6, from whose legs 84, 84 extend the first bends 91 toward the common center plane 92, the surfaces of which complement the lining of the right inner narrow side 90. Also, above the second plug portion 78 in the region of the fastening of the contact tongues 25, 26, the second bends 93 extend from the arms 83, 84, thus complementing the shielding sheath there.

The plastic sleeve 79 consists of a pair of moldings 94, 95 which can be connected to each other in the central plane 92 and which also insulate the entire third shielding sheet 46 including the cable end 96. The moldings 94, 95 of the sleeve 79 are provided with a series of These are, in particular, a pair of strips 97, 98 which extend into the cutouts 99 in the arms 84, 84.

It can further be seen from FIG. 6 that the third shielding plate 44 of the first functional drawer 18 is in the manner of a plug and a plug in contact with the third shielding plate 46 of the functional fork 23, while the existing clearance is compensated by the slats 77.

Claims (8)

PATENT CLAIMS 1. A socket for a data network connection device comprising a plastic housing, a printed circuit board, a pair of BNC sockets and at least one functional socket having at least two contact tongues arranged on opposite sides of the plastic housing, electrically conductive contact if the corresponding functional plug is not inserted between them, the central contact tubes of the BNC sockets being directly connected through the contacting tongues of the first pair of contact tongues and the respective conductive printed circuit boards arranged on the first flat side of the printed circuit board the first flat side, which is spaced parallel to the first flat side, is provided with a first conductive surface overlapping the large-area conductive connections, which is electrically conductively connected to the shielding connections of the BNC sockets and in contact with the contact tongues of the second pair of contact tongues, characterized in that an insulating layer (52) is provided above the first flat side (48) of the base plate (49) with the conductive connections (43), which is provided with a second conductive surface ( 42), which overlaps conductive joints (43) over a large area at a distance from the first flat side (48) and parallel third flat side (53), said second conductive surface (42) being electrically connected to the first conductive surface (41), and adjoining at least three outer sides (67,68,69) of the second plastic housing (66) of the first functional drawer (18) perpendicular to the base plate (49) is adjacent a first shielding plate (44) which is electrically connected to conductive surfaces (41,42). Connection socket according to claim 1, characterized in that the printed circuit board (47) is multilayered and consists of outer layers formed by a first conductive surface (41) and a second conductive surface (42) and a middle layer formed by conductive connections (43). ). Connection socket according to claim 1, characterized in that the first shielding sheet (44) is approximately U-shaped and overlaps two parallel flat sides (67,68) and one narrow side (69) of the second parallel to each other. the first shielding plate (44) is provided with a plurality of integrally formed solder tabs (76) connected thereto with the conductive surfaces (41, 42). Connection socket according to claim 3, characterized in that the narrow side (69) of the second plastic housing (66) is directly adjacent to the first pair of contact tongues (21, 22) by the first shielding sheet (44). Connection socket according to claim 1, characterized in that the first shielding plate (44) is provided with a plurality of integrally formed sheaths and resiliently away from the second housing. 280700 B6 (66) of protruding slats (77) for contacting the inner wall of the third shielding plate (46) of the functional fork (23). Connection socket according to claim 1, characterized in that the first functional socket (18) is provided with two adjacent pairs of contact tongues which in parallel form a connection with the BNC sockets (16, 17) and are arranged near the narrow side (69) of the second a plastic housing (66) encircling the first shield plate (44), while a further pair of contact tongues in contact with the shield connections is arranged at the narrow side (71) of the second plastic housing (66) in which a first recess shielding plate (44). Connection socket according to claim 1, characterized in that it is provided with two functional sockets (18, 19) whose contact tabs (21, 22) are electrically connected in series, each of these functional sockets (18, 19) being separately enclosed by the first shielding plate (44). Connection socket according to claim 1, characterized in that the first plastic housing (60) is two-piece and comprises a printed circuit board (47) together with a first functional socket (18) arranged thereon, which is surrounded by a first shield plate (60). 44).