SK113394A3 - Bonding plug and bonding cabel for bonding device to data network - Google Patents

Abstract

As connecting device for a data network, a connecting box (15) contains a circuit board by means of which two BNC sockets (16, 17) and at least one switched socket (18) are connected to one another. In order as far as possible not to interrupt the coaxial system of the data network in the region of the connecting box (15), the circuit board is constructed as a multilayer board, with the conductor tracks (43) extending between two shielding conductor surfaces (41, 42). The switched socket (18) is surrounded for the same purpose by a tightly fitting screening plate (44). In the case of the associated connecting cable, the plug-in part (24) of the plug (23) is likewise surrounded by a screening plate (46), with the result that the coax-like conductor guidance is continued here, as well. The connecting device therefore reliably meets the transmission requirements, such as immunity to radiated interference and low signal distortion. <IMAGE>

Description

Technical field

The object of the invention is a connection 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 with 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 sockets of the BNC sockets are directly connected through the contacting tongues of the first pair of contacting tongues and the respective conductive circuit boards of the printed circuit board, which are located on the first flat side of the printed circuit board, on which the second flat side is spaced parallel to the first flat side is formed by a first conductive surface overlying the large-area conductive connections, which is electrically conductively connected with the shielding connections of the BNC sockets and simultaneously with the contact tongues of the second pair of contact tongues.

The invention also relates to a data processing device connection cable with a connection socket comprising a BNC plug at one end of the connection cable and a functional plug at the opposite end of the connection cable, comprising at least two plugs on opposite sides of the plug portion. a pair of stored contact tabs. A signal conductor is always connected to the two contact tongues of the first pair of contact tongues, and these signal conductors are insulated from each other and shielded by feeding them to the BNC plug where they are connected together to its central pin so that they are electrically shielded signal wires.

BACKGROUND OF THE INVENTION

The connection socket as well as the connection cable are known, for example, from the German utility model DE-Gm 90 000 754. The data network serves primarily to be able to connect several data processing devices to one another or to connect it to a central computer and the like. For this purpose, a shielded coaxial cable is usually installed which has a series of connection sockets along the length, so that the devices can be connected by suitable connection cables at different points in the space or throughout the building as required. The advantage of the functional sockets originally developed for telephone connection sockets is that the data network is never interrupted, regardless of whether the connection cable is connected by a functional plug to the plug or not. There can be no mistake of inattention. The disadvantage is that this technical solution is at the limit of the technical requirements imposed on these networks, for example in terms of the radiation rate. These requirements can only be met at the limit of admissibility. This is because the coaxial system is interrupted in the area of connection sockets and function plugs. In the above utility model, it is stated that the conductive connections on the printed circuit board in the connection socket can be particularly shielded by a large copper foil placed opposite to it.

Also known are connection sockets of comparable type, whose housing is made of die-cast zinc. The functional plug of the connecting cable is likewise enclosed in a die-cast zinc die casting. With such encapsulation avoiding interference and intrusion into the network, the coaxial system still remains interrupted, which results in transmission loss and signal distortion at the limit of admissibility. The encapsulation described above is also very expensive, on the other hand it is welcome in a number of applications that no grounded metal parts are freely accessible to avoid sparking of electrostatic charges.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a construction of a connection socket of this kind and a connection cable suitable therefor, which makes it possible to meet the signal transmission conditions more safely and reliably 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, which is based on the fact that an insulating layer is provided above the first surface of the conductive motherboard. which, over a distance from the first flat side and the parallel third surface thereof, overlaps the large-area conductive connections, the second conductive surface being electrically connected to the first conductive surface and at least three outer sides of the plastic housing of the first functional socket and substantially perpendicular to the motherboard onto which the first shielding sheet 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.

A further advantage is that the first shielding sheet is approximately U-shaped and overlaps two parallel flat sides and one perpendicularly oriented narrow side of the plastic casing, with the first shielding sheet having connecting tongues connecting it to the conductive surfaces. .

In addition, it is advantageous if the narrow side of the plastic casing, which is encased by the first shielding sheet, is directly adjacent to the first pair of contact tongues.

Preferably, the first shielding plate has _a plurality of lamellae which are t

4, connected to it in a flexible manner and outwardly from the plastic housing, stand in contact with the inner wall of the third shielding plate of the functional fork.

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

A further advantage is that 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 individually encased by a first shield plate.

It is also advantageous if the plastic casing is in two parts and comprises a printed circuit board together with a first functional drawer which is encased by a first shielding plate.

The drawbacks of the known connection cables are largely eliminated by the connection cable of the data processing device with a connection socket according to the invention, which consists in that the plug part of the plug is encircled by a plastic sleeve between which and the periphery of the plug is an annular gap and the third shielding plate between which and the plug portion is a gap, wherein at least the first pair of contact tabs are arranged to overlap and are electrically conductively connected to the second shielding of the signal conductors.

Advantageously, the third shielding sheet abuts on two opposing inner flat sides and one right-angled inner narrow side of the plastic sleeve, the inner narrow side of the plastic sleeve lined with the third shielding sheet and adjacent to the first a pair of contact tongues.

A further advantage is that the functional fork has two pairs of contact tongues arranged in parallel, which are connected in parallel to the individual signal conductors and are located at the inner narrow side lined with a third shield plate, the other pair of contact tongues connected to the second shield. located at the inner narrow side of the plastic sleeve with a recess on the third shield plate.

In addition, it is advantageous if the third shielding plate is bent to approximately U-shape, the arc _of which extends at least partially through a loosely positioned second shield of the signal conductors, is in contact with them and the two legs of the U-profile are substantially parallel and spaced from the contact The tabs extend to the front edge of the functional fork, overlapping the two inner flat sides. From the two arms of the third shielding plate, the first bends project towards the common central plane, the surfaces of which complement each other complement the inner narrow side of the plastic sleeve.

The plastic sleeve preferably consists of two moldings which are connected to one another in the central plane, which insulatingly surround the entire third shielding sheet together with the cable terminals, the plastic sleeve having a rectangular outer contour when viewed from the insertion side.

In this way, the conductive connections on the printed circuit board are enclosed between the shielding surfaces on both sides, creating a situation similar to that of the coaxial cable. Also, the shield plates placed close to each of the functional drawers are positioned at the contact tongues at a distance that is characteristic of the coaxial system. Similarly, the plug portion of the functional plug is wrapped around the shielding plate. It is self-evident that the shield plates of the functional plug and the functional plug fit together as a plug and plug. In this way, the coaxial data network system is continuously maintained at the connection points of other devices as much as possible. On the outside, the entire system is insulated, and the connection socket can be manufactured up to now in a conventional manner with a plastic housing. In addition, the connection sockets of this construction can be connected to unshielded functional plugs.

BRIEF DESCRIPTION OF THE DRAWINGS

SUMMARY OF THE INVENTION The advantages and advantages of the present invention are illustrated by the following non-limiting examples, which are described with reference to the accompanying drawings, in which:

Fig. 1 shows an electrical connection of a schematic representation of a shield according to the invention, FIG. 2 is a perpendicular 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 an exploded perspective view of a functional drawer with shielding plate prior to installation, FIG. 5 is a side view of a functional plug according to the invention with the upper housing half exposed, and FIG. 6 is a cross-sectional view of the receptacle and plug in the pre-coupling position, with the right-hand side of the median plane showing a section in the plane 6r-6r of FIG. 5 and a portion to the left of the median plane is a sectional view taken along line 61-61 of FIG. 5th

DETAILED DESCRIPTION OF THE INVENTION

In the wiring diagram shown in FIG. 1, an inbound data bus 11 that is connected to the first BNC plug 12 is apparent. The outbound data bus 13 is connected to the second BNC plug 14. Between these BNC plugs 12, 14 only A schematic connection socket 15, which in particular comprises two BNC sockets 16, 17 for connecting the BNC plugs 12, 14. The connection socket 15 further comprises two functional sockets 18, 19. These functional sockets 18, 19, which are identical, have first pairs of contact tongues constructed in a pair of opposing contact tongues 21, 22, which contact each other electrically conductively if no functional plug is inserted as shown at the second functional socket 19. However, if the functional plug 23 is inserted, as shown in the first functional socket 18 on the left side, the contact tabs 21, 22 will be spaced apart.

The functional plug 23 has a first pair of contact tongues formed by two contact tongues 25, 26 facing each other on opposite outer sides of the first plug portion 24. Signal wires 27, 28 are connected to these contact tabs 26, 26, which are insulated from each other and electrically shielded. The opposite ends of these signal conductors 27, 28 are coupled to 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 which is for connecting the device 33. for data processing to the data network.

The signal path extends from the supplying data bus 11 through the central pin 34 of the first BNC plug 12 to the central contact socket 35 of the first BNC socket 16 and from there to the first contact tab 21 of the first functional socket 18 and through the third contact tab 25 of the functional plug 23 the first signal conductor 27 to the central pin 29 of the third BNC plug 31. Here the signal path splits to the data processing device 33 and to the second signal conductor 28 back to the fourth contact tongue 26, from where it leads through the second contact tongue 22 of the first functional 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 signal path ends through the central pin 37 of the second BNC plug 14 and passes through the outgoing data bus 13.

In FIG. 1, it is not shown that each of the functional sockets 18, 19 is formed by another 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 shield 38 of the BNC sockets 16

Similarly, the functional fork 23 is formed by a second pair of contact tabs which are connected in parallel to the second shield 39 of the signal wires 27, 28 and are electrically connected to the first shield 38 via the second pair of contact tabs of the functional fork 23.

In FIG. 1 also does not show the advantageous solution that each functional receptacle 18, 19 preferably has an additional pair of contact tabs that are in a plane above the illustrated contact tabs 21, 22, which need not have any switching functions and are electrically connected in parallel to the shown contact tabs. On the functional fork 23 there is another corresponding pair of contact tongues. If there is a faulty contact at some point, its function is reliably assumed by the parallel contact - also not shown.

In FIG. 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 shield plates 44, 45 in the area of the functional sockets 18, 19. All these shielding elements are connected to the first shield 38 Also, the functional fork 23 is provided with a third shielding plate 46, which is electrically connected to the second shielding 39.

In FIG. 2 is a schematic cross-sectional view of a printed circuit board 47 which is constructed as a multi-layered board. Conductive joints 43 are applied to a first surface 48 of the base plate 49, while a second conductive surface 41 is provided on the second surface 51. An insulating layer 52 is disposed above surface 48 and a second conductive surface 42 is disposed on its outer surface 53. The islands 41, 42 that extend across the entire surface of the printed circuit board 47 are formed by islands in which the first intermediate connections 54 are located to the internally located conductive connections. Conversely, the outer conductive joints bypass the second intermediate joints 55, which connect the two outer layers.

In FIG. 3 shows the overall construction of the connection socket 15. The printed circuit board 47 is provided on its upper side with at least one functional socket 18 and BNC sockets 26, 27 which are made as angular sockets protrude from the underside of the printed circuit board 47. The printed circuit board 47 is housed in a two-piece first plastic housing 60, which consists of a bottom 56 in the form of a board and a cover 57. In the bottom 56, recesses 58 are provided for the connection sockets 59 of the BNC sockets 16, 27. The two-piece plastic housing 60 is a metal fastening ring 61 which is fixedly connected to the wall 62 to fasten the box 62. At the top is a cover plate 63 on which a panel 64 with an even larger contour is attached. The first functional drawer 28 is surrounded on three sides by the first shield plate 44, which is more visible in FIG. 4th

The first functional drawer 18 of FIG. 4 made with a second prism-shaped plastic casing 66 with a pair of larger parallel flat sides 67, 68 and a pair of narrow sides 69, 72 perpendicular to the flat sides 67, 68. In the upper side of the second plastic spike 66 is an opening for receiving the respective functional plug 23 is formed. 4 also show the inwardly extending contact tongues 21, 22 whose soldered tips protrude from the underside of the second plastic casing 66. The first shielding sheet 44 is approximately U-shaped and consists of two large-area side arms 72, 73. The arms 72, 73, 74 have an inwardly curved flange 75 that extends slightly over the upper side of the second plastic casing 66. Said skirt 75 serves for reinforcement. Part of the first shield plate 44 is a plurality of soldered tabs 76 that are integrally formed with the first shield plate 44 and extend downwardly. In the arms 72, 73, 74, by embossing, approximately E-shaped lamellae 77 are formed, which are always bent away from the second plastic case 66. These lamellas 77 serve to resiliently contact the shielding sheath of the functional plug 23.

The first shielding plate 44, by virtue of its design, can be U-shaped, as shown in FIG. 4, still easy to bend. In the region of the open side of the V-profile there is a narrow side 71 of the second plastic housing 66, in which the aforementioned second pair of contact tabs are connected, which are interconnected by shielding and thus complement the shielding of the first functional drawer 18. The pair of contact tabs through which the signal passes is housed within a space which is shielded by a first shield plate 44 which lies as a thin layer on the second plastic case 66 and therefore occupies a minimum space.

In FIG. 5 shows a known analogue of the functional plug 23, drawn in thin, partially in dashed lines. The downwardly extending second plug portion 78 is spaced by a sleeve 79 of plastic having a rectangular ring shape when viewed from the insertion direction. On the inside of this sleeve 79, a third shielding plate 46 is disposed, 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 screen 46 is drawn with thicker lines for accentuation. This third shielding plate 46 is, as shown in section in FIG. 6, the U-profile bend 82 partially overlaps the loosely mounted second shield 39 of the signal conductors 27. 28 of FIG. 1 with which it is preferably connected. The two arms 83, 84 of the third shielding plate 46 are arranged 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 86, 87 of the plastic sleeve 79. FIG. 5, it is clear that these arms 83, 84 extend from the right inner narrow side 88 to almost the opposite left inner narrow side 89, exactly so far as to overlap laterally the second pair of contact tongues closest to the left inner narrow side 89 and are electrically coupled to the second shield 39 of the signal conductors 27. 28. Again, the second pair of contact tabs takes over the shielding function instead of the third shielding plate 46, at which point there is a recess. This solution greatly simplifies the bending operation in the manufacture of the third shielding sheet 46 from which the arms 83, 84 extend toward the common central plane 92 of the first bends 91, the surfaces of which complement the lining of the right inner side 88. 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, which in this way complete the shielding sheath.

The plastic sleeve 79 consists of a pair of moldings 94, 95, which can be connected to each other in the middle plane 92 and which also insulate the entire third shielding sheet 46, including the cable terminal 96. Moldings 94, 95 of sleeve 79 are formed with a series of inwardly extending ledges or protrusions that center and support the third screen 46. In particular, a pair of strips 97_, 98_ extend into the cutout 99 in the arms 83, 84.

FIG. 6, the third shielding plate 44 of the first functional drawer 18 is in the manner of a plug fork in contact with the third shielding plate 46 of the functional fork 23 and aligns the slats 77 with the existing clearance.

Claims (13)

PATENT CLAIMS 1. Connection socket for data network connection equipment, consisting of a plastic housing, a printed circuit board, a pair of BNC sockets and at least one func- tion socket with at least two contact tongues on opposite inner sides of the plastic housing; which are electrically conductive to one another when the respective functional plug is not inserted therebetween, wherein the central contact sockets of the BNC sockets are directly connected through the contacting tongues of the first pair of contacting tongues and the respective printed circuit boards of the first printed circuit board. the flat side of the printed circuit board, which on the second flat side, which is spaced parallel to the first flat side, has a first conductive surface overlying the large-area conductive connections and is electrically conductively connected to the shielding connectors of the BNC sockets and 2, 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 a first flat side (48) and a parallel third flat side (53) over a large area over the conductive joints (43), said second conductive surface (42) being electrically connected to the first conductive surface (41) and at least three outer sides (67, 68) 69) of a second plastic housing (66) of a first functional drawer (18) substantially perpendicular to the base plate (49) adjoining the first shield plate (44), which is electrically connected to the 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 forming a first conductive surface (41), a second conductive surface (42) and a middle layer which they form conductive connections (43). Connection socket according to claim 1, characterized in that the first shielding sheet (44) is approximately U-shaped and overlaps two flat flat sides (67, 68) parallel to each other and one perpendicularly oriented narrow side (69) 1) of a second plastic housing (66), the first shielding plate (44) having a plurality of soldered tongues (76) formed therewith, with which it is connected to the conductive surfaces (41, 42). Connection socket according to claim 3, characterized in that the first shielding sheet (44) is a narrow side (69) of the second plastic housing (66) which is directly adjacent to the first pair of contact tongues (21, 22). . Connection socket according to claim 1, characterized in that the first shielding plate (44) has a series of resiliently formed therefrom from the second plastic housing (66) of the projecting slats (77) for contact with the inner wall of the third shielding the functional fork (23). Connection socket according to claim 1, characterized in that the first functional socket (18) has adjacent pairs of contact tongues which in parallel form a connection to the BNC sockets (16, 17) and are located near the narrow side (69) a second plastic housing (66) enclosed by the first shield plate (44), while the other pair of contact tabs in contact with the shield connections is located at the narrow side (71) of the second plastic housing (66), wherein there is a recess in the first shield plate. Connection socket according to claim 1, characterized in that it has two functional sockets (18, 19), whose contact tabs (21, 22) are electrically connected in series, each of these functional sockets (18, 19). is separately encased by a 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) which is wrapped around the first shielding sheet metal (44). Connection cable of a data processing device with a connection socket, in particular a connection socket according to any one of the preceding claims, comprising a BNC plug at one end of the connection cable and a functional plug at the opposite end of the connection cable having opposite sides at least two pairs of contact tongues located in the male part, the signal conductors being connected to both contact tongues of the first pair of contact tongues, the signal conductors being insulated and shielded from one another to the BNC plug, where they are connected together to its central pin, an electrically shielded signal conductors shielded to the contact tabs of the second pair of contact tabs, characterized in that the second plug portion (78) of the functional plug (23) is surrounded by a plastic sleeve (79) between which and the circumference of the second plug the tab portion (78) is an annular gap and which also encircles the third shield plate (46) between which and the second plug portion (78) is a gap, at least the first pair of contact tabs (25, 26) being positioned overlapping and is electrically conductively coupled to the second shield (39) of the signal conductors (27, 28). Connection cable according to claim 9, characterized in that the third shielding sheet (46) abuts on two opposite inner flat sides (86, 87) and on one right-angled inner narrow side (88) of the sleeve (88). 79) of plastics material, which is lined with a third shield plate (46) and adjoins the first pair of contact tongues (25, 26). Connection cable according to Claim 10, characterized in that the functional plug (23) has two juxtaposed pairs of contact tongues which are connected in parallel to the individual signal conductors (27, 28) and are located at the inner narrow side (23). 88) lined with a third shield plate (46), the other pair of contact tabs, which is connected to the second shield (39), is located within the narrow side (89) of the plastic sleeve (79) having the third shield plate (46). selected. Connection cable according to claim 10, characterized in that the shielding plate (46) is approximately U-shaped, whose arc (82) extends at least partially through a loosely arranged second shield (39) of the signal conductors (27). , 28) and is in contact with them and the two arms (83, 84) of the U-section of the third shield plate (46) are substantially parallel and extend from the contact tabs (21, 22) to the front edge (85) of the functional fork (23) while overlapping the two inner flat sides (86, 87), the first bends (91) whose surfaces are mutually spaced apart from the two arms (83, 84) of the third shielding plate (46) towards the common center plane (92). they complement and cover the inner narrow side (88) of the plastic sleeve (79). Connection cable according to claim 12, characterized in that the plastic sleeve (79) consists of two moldings (94, 95) which can be connected to each other in a central plane (92) which also insulates the entire third shielding plate in isolation. (46) including the cable terminal (96), the plastic sleeve (79) having a rectangular outer contour when viewed from the insertion side.