EP0794595B1 - Shielded connection box - Google Patents

Abstract

The socket includes a screening casing (20) which consists of several conductive elements (22, 30, 40), at least one plug socket (50) with a screening (52), and conducting connections arranged between the elements of the screen casing and the screening of the plug socket. All elements of the casing are coupled movable and electrically conducting with each other, and are firmly connectable with each other through a connecting arrangement (48a, 48b) in an installation position, in which the casing is closed, and the socket is prepared for the installation.

Description

The invention relates to a shielded junction box Preamble of claim 1, particularly for Telecommunications equipment is used.

About such outlets, as for example in the DE 44 04 807 A1 are disclosed, terminal devices such as Telephones and computers, telecommunications and Data cables are connected, which are laid in walls and led to the junction box via shafts or lines are. The connection of the mentioned end devices to the Junction boxes and thus to corresponding networks is made by suitable plugs.

The networks are increasingly using high transmission rates, e.g. operated at 100 MHz. At these high transfer rates is a shielding of the junction boxes against radiation required. The shielding takes place at the junction boxes according to the preamble of claim 1 by a Shield housing, which consists of several conductive components consists. These components can in particular consist of punched metal parts, die casting or conductive or plastic parts made conductive. Furthermore point such outlets at least one socket in which can be inserted into a connector of a terminal. The sockets are provided with their own shielding. Even those from the wall or a shaft into the junction box introduced cables have a shield, which is mostly in is in the form of a wire mesh. For one complete shielding of the junction box must be between all shielding elements, i.e. the components of the Shield housing, the shields of the sockets and the Shielding of the inserted cables, a conductive connection be formed.

It is known for these conductive connections that To arrange sockets on a circuit board or printed circuit board, with which the shields of the sockets are also conductive get connected. The cable shields are over Fastening clamps with the housing and / or the PCB connected. For complete shielding are known from the cited document Junction box a mounting plate, a separate housing and a housing cover is provided.

Furthermore, are in another known junction box symmetrical housing parts are provided, which over the on the PCB sockets and connection contacts be pushed together and over a metallic bridge mechanically and electrically connected become.

These known junction boxes are disadvantageous in that that they have many individual parts, so that on the one hand Assembly of the junction box in preparation for the Connection of cables and installation in installation boxes in the wall is expensive. Furthermore, the attachment of the Cable and the fastening of the components of the shield housing complex, since many individual mechanical connections, such as Screws that need to be attached. Furthermore, the Handling such a junction box disadvantageous because the individual, loose when preparing for assembly attached components of the screen housing handled have to be and easily get lost.

This disadvantage also remains with those in DE 42 34 451 C1 and the DE 43 09 039 A1 outlets shown also have a circuit board and in which the Contacting of the cable shields via mounting brackets he follows. Also those shown in these publications Junction boxes require many items and require one elaborate pre- and final assembly.

This disadvantage is with a junction box according to the DE 44 04 801 A1 somewhat reduced by the housing parts of the shield housing can be attached to a mounting plate and through suitable recesses in the housing parts at the same time for clamping and contacting the Shielding of inserted cables is ensured. This one too However, a circuit board is required to make the arrangement Attach sockets and conduct their shields with to connect the remaining screen elements. This is the Pre-assembly of such a junction box due to the The need to equip the board with the sockets and the usually designed as insulation displacement contacts Connections continue to be complex. Furthermore, this also points Arrangement of many separate housing parts, which under the final assembly must be put together.

Finally, DE 35 30 722 A1 describes WO 87/01 520 corresponds to an antenna socket known that one has pivotable clamping arm for clamping coaxial cables. In contrast to the generic junction box has a such antenna socket, however, is not a complete one Shielding and separate sockets with a shield. Furthermore, a screwable, rear cover provided so that even with a such a can from another technical field elaborate pre-assembly with the need for handling individual, loose housing parts is required.

Given these disadvantages, those known in the art shielded junction boxes of the present invention based on the task of a shielded junction box create that from a few, easy to manufacture Individual parts can be easily pre-assembled and in the case also the connection of cables and installation in a Installation box or easy installation on a wall designed.

This problem is solved by the features of Claim 1.

Accordingly, according to the invention, all are conductive Connections for complete shielding must be made through direct contact of the screen elements to be connected. That means on the one hand, that the components of the umbrella housing and directly touch the shields of inserted cables and in conductive connection with each other, so that the Connection not through a board or through Mounting clamps must be made. It also says also the shielding of those in the junction box Sockets in direct, conductive contact with the Components of the umbrella housing. This means in advantageously no need to be the senior Connection to the shields of the sockets via a Manufacture circuit board or a printed circuit board. Hence can the number of individual parts are reduced and the Attachment of the sockets together with their shields be simplified.

Preferred embodiments are defined in the subclaims featured.

The components of the Screen housing preferably captive, movable and conductive coupled to each other and by a connecting device firmly connectable to each other in an assembly position in which the shield housing is closed. So they are Components of the shield housing not only conductively with each other connected, but rather it's a captive, movable coupling between the components of the Screen housing formed. As part of the installation of the Junction box and the installation of inserted cables are the Components of the shield housing by a connection or Locking device firmly connected. By the captive coupling of the components of the Umbrella housing simplifies the handling of the Installation prepared junction box considerably. Further are significantly less in the final installation Joining operations required as they are already captive interconnected components of the shield housing only need to be moved to their assembly position in which they are firmly connected to each other by the connecting device be connected so that the shield housing is closed. The described formation of captive, agile and coupled with each other and by a Connection device firmly connectable Components of the umbrella housing is from the direct conductive connection with the shields of the Sockets independently and can also be used with junction boxes a differently designed conductive connection, like one Circuit board, are used.

In the connection box according to the invention, it is advantageous to make the components of the umbrella housing pivotable, and it is preferred that these be in an assembly position are foldable. This is what happens with this training Closing the screen housing during the installation particularly easy, because after connecting the cables Components of the umbrella housing only in the Assembly position must be folded and then through the Connection device are firmly connected can.

For the conductive connection between the shields of the Sockets and the shield housing is preferred that this conductive connection through an additional mechanically acting Connection is established. Advantageously takes over thereby a connecting device, which is for the mechanical Definition of the sockets and their shields in the Screen housing is required anyway, the formation of a conductive contact between the shields of the sockets and the components of the screen housing. Through this In particular, the need for a measure is eliminated Circuit board and mounting clamps over which the shields the sockets previously mechanically fixed and with the Shield housing were electrically connected. The mechanical and electrical connection between these components of the Junction box can now be used when installing the box by a few assembly steps and a small number of Individual parts are trained.

Experiments have had particularly good experiences with a Locking device between the shields of the sockets and made the shield housing. A locking device provides one easy to assemble mechanical connection through a snap of preferably on the shields of the Sockets trained locking lugs in corresponding Cutouts in one part of the umbrella housing can be trained. The positive locking achieved thereby, which, with appropriate dimensioning, also has a frictional connection between the connected elements ensures a particularly permanent conductive connection between the elements mentioned. For this embodiment, further preferred, the socket with a base of the Connect the screen housing.

In a further advantageous embodiment of the shielded junction box according to the invention Shield housing from the base body and two on the base body hinged flaps, one of the flaps at least one support surface and the other of the flaps at least one recess for the introduction and definition of a cable to be inserted and the formation of a Has conductive connection with the shield of the cable. This is advantageous in addition to the mechanical Definition of the inserted cables in the shield housing too an electrically conductive connection is formed. Through the Combination of recess and contact surface on the two Flaps between which the cable with the exposed Shielding can be pinched, are not separate and clamps to be attached separately. At the same time the inserted cable no longer from the shield housing be pulled out. Also the permanent training of a conductive connection between the shields of the cables and the components of the shield housing are guaranteed.

Another embodiment of the invention Connection box is also characterized in that for two existing sockets Western sockets with it trained insulation displacement contacts are used. A such Western socket requires no connection to the insulation displacement contacts on a board, rather the insulation displacement contacts directly on the rear Area of a corresponding component molded. The The individual wires of the inserted cables are attached by pressing into the insulation displacement contacts what preferably by folding on the Western socket attached plunger can be guaranteed. Such Western sockets are known and require for that Attaching the individual wires of the inserted cables none Tool.

Furthermore, the known component described is advantageous Way for installation in the junction box according to the invention suitable because of the shielding of the Western socket attached locking lugs for a mechanically firm and electrically conductive connection with a component of the Screen housing can be used. In advantageous It is also the less expensive installation of a pre-assembled with attached cables Western socket in the shield housing of the junction box possible.

Fig. 1

eine perspektivische Explosionsansicht einer ersten Ausführungsform der erfindungsgemäßen Anschlußdose;

Fig. 2

eine perspektivische Explosionsansicht einer zweiten Ausführungsform der erfindungsgemäßen Anschlußdose;

Fig. 3

einen Längsschnitt durch die in Fig. 2 dargestellte Anschlußdose.

The present invention is described below purely by way of example using advantageous embodiments with reference to the accompanying drawings. Show it:

Fig. 1

an exploded perspective view of a first embodiment of the junction box according to the invention;

Fig. 2

an exploded perspective view of a second embodiment of the junction box according to the invention;

Fig. 3

a longitudinal section through the junction box shown in Fig. 2.

The shielded junction box 10 shown in Fig. 1 exists in the case shown from the conductive shield housing 20 and a cover 12 usually made of plastic. The shield housing 20 consists of a base body 22, one upper flap 30 and a rear flap 40. The Components 22, 30 and 40 of the screen housing 20 are for Formation of a shield from stamped metal parts, Die-cast parts or made conductive or conductive Made of plastic elements.

Both the plastic cover 12 and the base body 22 of the shield housing 20 each have two openings 14 and 24 on the introduction of plugs (not shown) serve via the terminal devices, e.g. Telephones or computer, to be connected to the junction box 10 can. In the embodiment shown, the rear areas of the side walls 26 of the base body 22 Attachment claws 28 formed, the attachment of the Umbrella housing 20 serve on a wall.

For a conductive and captive mechanical Connection between the flaps 30 and 40 with the base body 22 are on the flaps 30, 40 pairs of Hinge pins 32, 42 formed. As part of the pre-assembly the junction box 10 and its preparation for connection of cables and attaching them to a wall Hinge pins 32, 42 in recesses (not shown) used in the base body 22 and connected to it. In these recesses become the hinge pins 32, 42 in this way fixed that they are rotatably mounted in the recesses and as part of the usual, during transportation or the Handling the junction box 10 occurring loads can be moved out more. As a result, the flaps 30, 40 captive and foldable on the base body 22 appropriate. In particular, the upper flap 30 can be removed from the shown position up and the lower flap 40 from the drawn position can be folded back.

After attaching the in the junction box 10 from a wall or a cable inserted into the shaft, the flaps 30, 40 folded into their final assembly position. The Mounting position of the flaps 30, 40 is in one Sectional view shown in Fig. 3 below is described in detail. In this assembly position there is a firm mechanical connection between the Components 22, 30 and 40 of the screen housing 20 by a suitable mechanical connecting device in which shown case by a screw-nut connection (shown in FIG. 3) 48a, 48b. This is through a recess 44 out in the upper edge region of the rear flap 40 and into an opening (not shown) in the rear wall 36 of the upper flap 30 used. In the thereby fixed Assemble the components of the Shield housing 20 for a complete shielding of the Junction box.

Furthermore, through recesses 46 in the upper region of the Flap 40 in a horizontal position in the assembly position extending section are formed, a conductive Contact to the shielding through the recesses 46 introduced (not shown) cable. The dimensions of the recesses 46 are suitable also achieved that the edges of the recesses 46th the shielding of the inserted cables against the rear Press surface 36 of the upper flap 30. That’s why inserted cable fixed to the shield housing 20 and it can be excluded that the cables from the Shield housing 20 can be pulled out. Through the movable and in particular foldable version of the flap 40 different diameters of the exposed Shield braid of inserted cables can be compensated. Furthermore, the advantageous design of Recesses 46 and the rear wall 36 a direct conductive Connection with the shields of the inserted cables achieved without this by own clamps or Screw connections are fastened and conductively connected have to. In a similarly simple way, for a senior Connection between the individual components of the Umbrella housing 20 through the hinge pin 32, 42 and corresponding recesses in the base body 22.

In the embodiment shown in FIG Junction box 10 according to the invention are flaps 30 and 40 designed the same as that shown in Fig. 1 Embodiment. Only the base body 22 of the Shield housing 20 is for the attachment of the junction box 10 designed differently in an installation box than the Base body 22 of the embodiment shown in Fig. 1, the for mounting the junction box 10 on a wall is trained. Accordingly, the base body 22 is the So-called flush-mounted version shown in Fig. 2 in the front areas of the side walls 26 with fastening claws 28 provided. Furthermore, this embodiment in the rear areas of the side walls 26 of the base body 22 a connection option 38 for a Equipotential bonding line, which in the same way at 1 embodiment can be provided.

A difference to the so-called shown in Fig. 1 Surface-mounted design consists in the fact that in the case of FIG shown embodiment, the plastic cover 12 a frame 16 and a plate 18, which with the provided two openings 14 for the introduction of plugs is. The two flaps 30 and 40 are for both Embodiments designed identically and thereby reduce advantageously the number of different Components for the two embodiments shown required are.

In Fig. 3 the embodiment shown in Fig. 2 is for Clarification of the assembly position and the attachment of the Sockets 50 in the shielded junction box 10 in one Longitudinal section shown. The cutting line lies in approximately in the middle of the junction box 10 when this from the front is looked at. The sectional view shows as in the assembled position, the flap 30 in one position is folded, in which its upper wall section 34 approximately is in a horizontal position. Furthermore, the rear flap 40 folded into a position in which it is substantially vertical and approximately perpendicular to the lower one Bottom of the base body 22 extends. Through the Connection device consisting of the screw 48a and a nut 48b through the recess 44 in the rear Flap 40 is guided and into an opening in the rear wall 36 the upper flap 30 is inserted, the shield housing, consisting of the base body 22 and the two flaps 30 and 40, held together for a complete To achieve shielding of the socket 50.

According to the invention, in addition to the components of Shield housing 20 and the shielding of cables introduced too the shielding of the sockets 50 in immediate and conductive contact with the shield housing 20. In the shown This embodiment is achieved in that the Shielding 52 of the socket 50 to be recognized in one front area is provided with a latch 54. The Socket 50 becomes part of the assembly of the junction box 10 with the shield 52 in a recess in the Base body 22 guided that after elastic deformation of an element on the socket 50, the latch 54 with the Recess in the base body 22 is engaged. In particular, the engagement of the locking lug 54 prevents Edge of the recess in the base body 22 removing the Socket 50 from that shown in Fig. 3 Assembly position. Otherwise, in the case shown Socket 50 is inclined downward by approximately 30 ° to the vertical. The attachment described is in the Sectional view, not shown, second socket identical.

The attachment of the sockets 50 in the base body 22 of the Umbrella housing can be in a pre-assembled state happen, i.e. in a state in which the sockets 50 already with the back, so in the drawing on the left cables to be inserted is provided. For this Pre-assembly twists the individual Split the wire pairs of the cables to be inserted and into them the rear end of the socket 50 trained (not visible) insulation displacement contacts and pressed in. In In the case shown, this impression is particularly special advantageously achieved by two plungers 56 which are each foldable about axes 58.

By using such, with rear Plunger-fitted western socket, the Attaching the cables to be inserted is particularly easy. How described, can first of all attach the individual wires at the insulation displacement contacts of the socket 50, by applying the wires to the insulation displacement contacts, and the Tappet 56 snapped into that shown in FIG. 3 Position swiveled. In the following it will be like this Pre-assembled socket 50 from behind, that is in the Drawing from the left, on the two flaps 30 and 40 inserted into the base body 22 and through the Engagement of the latch 54 with a suitable recess in attached to the base body 22. With this attachment, the Socket 50 both mechanically fixed and with it Shielding 52 conductive to the base body 22 of the Screen housing connected. In the same way, the second Socket can be attached.

Subsequently, the flap 30 and then the Flap 40 pivoted into the position shown in Fig. 3, the inserted cables through the recesses 46 in the rear flap 40 are performed. In the fields of Cables in which the contact with the cutouts 46 takes place the braided shield of the cables is exposed. The breakdown the wire pairs are made exclusively within the Shield housing 20. Set the shielding of the cables in the assembly position and after fixation by the Connection device 48a, 48b both the rear wall 36 of the upper flap 30 as well as the edges of the recesses 46 in the rear flap 40 a conductive contact. This is advantageous in addition to that without further mechanical fasteners reached conductive Connection also a mechanically firm connection of the introduced cable with the shield housing 20 reached. Consequently, it can be excluded that the cables from the Shield housing are pulled out and out of the Loosen screen housing 20.

In the assembly position achieved in this way, the shielded junction box 10 in an installation box in the Wall inserted and fixed and with the frame 16 and the Plate 18 made of plastic covered towards the interior of the room become. A screw 60 ensures attachment of the Plastic cover 16, 18 on the base body 22 of the Umbrella housing.

Similarly, that shown in Fig. 1 is shown Junction box 10 placed on a wall and fixed and with the plastic cover 12 towards the interior of the room covered. Here also a (not shown) Screw for fastening the plastic cover 12 the base body 22 of the shield housing.

Claims (7)

1. Shielded connector box, especially for telecommunications devices, having:

   a shielding housing (20) consisting of a plurality of conducting components (22, 30, 40),

   at least one plug socket (50) which is provided as a structural part separate from the shielding housing (20) and possesses a shielding part (52), and

   conducting connections between the components (22, 30, 40) of the shielding housing (20), the shielding (52) of the plug socket (50) and the shielding parts of introduced cables,

   the conducting connections being formed by direct contact of the shielding members to be connected,

   characterised in that
   the shielding (52) of the plug socket (50), in particular after prefabrication of the plug socket (50) achieved by attaching the cables, can be fastened directly to a component (22) of the shielding housing (20).
2. Shielded connector box according to Claim 1, characterised in that the components (22, 30, 40) of the shielding housing (20) are coupled to one another in undetachable, movable and conducting manner and by means of a connecting device (48a, 48b) can be connected firmly to one another in a mounting position in which the shielding housing (20) is sealed and the connector box is prepared for installation.
3. Shielded connector box according to one of the preceding claims, characterised in that the components (22, 30, 40) of the shielding housing (20) are constructed to be pivotable, in particular capable of being swung into an assembly position.
4. Shielded connector box according to one of the preceding claims, characterised in that the shielding (52) of the plug socket (50) is additionally connected mechanically to a component (22) of the shielding housing (20).
5. Shielded connector box according to Claim 3, characterised in that through a catch device (54) constructed on the shielding (52) of the plug socket (50) and on a component, preferably a base member (22), of the shielding housing (20) the plug socket (50) is firmly connected to the component, preferably the base member (22), of the shielding housing (20).
6. Shielded connector box according to one of the preceding claims, characterised in that the shielding housing (20) consists of the base member (22) and two flaps (30, 40) attached to be swivellable on the base member, of which one (30) possesses at least one support surface (36) and the other (40) possesses at least one recess (46) for the introduction and fixing of a cable to be introduced and the conducting connection to the shielding of the cable.
7. Shielded connector box according to one of the preceding claims, characterised in that the plug socket (50) is a Western plug socket having insulation displacement contacts constructed on it which is firmly and conductively connected to the base member (22) of the shielding housing (20) through catch devices (54).

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