DE7146117U - Double-sided switch with connector-receiving parts - Google Patents

Description

Western Electric Company Inc.

195 Broadway

HeW York, N.Y. 10007 / USA A 32 712

Double-sided circuit. With connections receiving parts

The new thing concerns double-sided circuits with connections receiving parts, in particular for easy assembly with associated connections and for subsequent attachment of the circuit with the connections.

In the manufacture of different types of electrical components, a large number of connections run from a common « the entire surface of these building blocks and requires connections between certain connections for purposes of Erlelohtarang the subsequent operation of the unit. In many cases the structural units and the spacing are relatively small in any direction between adjacent ports is very little. Because of the density of the one area of the Assembly outgoing terminals, it is somewhat tiring and difficult for a worker or machine to attach and secure connection lines between selected terminals of the assembly which are to be connected to one another must to facilitate the subsequent operation of the assembly.

An example of an electrical assembly that requires interconnection is an electrical telecommunications switch,

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for example a crossbar switch. Up until now, conventional crossbar switches were big enough to make a connection of lines and a wiring between selected connections of the switch to allow this with less Difficulty attaching and attaching to the switch.

Recently, a new improved crossbar switch has been developed which is considerably smaller than the conventional crossbar switch. The smaller crossbar switch results from German patent specification 1 800 156. The compactness of the newly developed crossbar switch enables a reduction in the space required to accommodate a switch of this type in its external environment, for example in a central Pernspx-echamt. The smaller switch allows more switches to be mounted in an available installation facility, thereby reducing the cost of switch users. However, with the advent of smaller structural units, for example the newly developed crossbar switch, it is necessary to limit the connection areas of the switch to a smaller area compared to the conventional crossbar switch. Since the terminals extending from one face of the small cross loop switch are extremely close to adjacent terminals, it is extremely difficult for an operator to connect selected terminals using known manipulators and methods. For example, the overcrowded arrangement of A T * ^ h1 ti ⁿ * »on, which emanate from the connection area of the switch developed by sea, does not easily simplify the introduction of individual lines into the areas of the connections and the subsequent attachment of the fastening elements, for example solder and soldering iron, in the limited spaces between the connections to be fastened with the cable,

As a result, it became apparent that new methods and interconnections would have to be developed to provide a small crossbar switch that would not be expensive

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is adversely affected on the wired switch due to a difficult and time consuming connection of the selected connections of the switch.

The task of the Ss-fiüuuog is to create an opposite Prior art improved double-sided circuit, which is used to connect selected terminals in a range of high Connection density can be used.

A double-sided circuit according to the invention can be a non-conductive pad with at least one collecting line on one Side of the same and several connection lines on the other side, which via a connecting element with the Manifold are connected. Each of the connecting lines has means for receiving and gripping a portion of a associated connection, so that all connections in engagement with the connection lines via the connection lines and the collecting lines are connected to one another.

The innovation creates aleo a flexible, semi-rigid base of non-conductive material having a plurality of spaced apart longitudinal conduits on one side thereof and a plurality of parallel spaced apart ones transverse lines stored on the other side of the same. Continuous hole connections extend through the Underlay between selected longitudinal lines and selected transverse lines. The transverse lines extend to a common edge of the base, which is provided with a longitudinal fold. That portion of each of the transverse conduits that extends over the backing extends, has an elongated opening which is arranged symmetrically about the axis of the transverse line. the Longitudinal opening results in a saddle for receiving part of a Connection which rests in the saddle and can subsequently be soldered to the transverse line in association with the saddle

The hiring is explained in more detail below with reference to the drawings. Ss show:

Pig. 1 an embodiment of an electrical component, beiapielöwöiöv «ines small Srsussclilsziesschalters ^ zur Ye? - Illustration of a surface area with a high connection density on one side of the switch in a partial perspective view,

P5: g. 2 shows an embodiment of a double-sided circuit after the hiring in plan view,

Pig. Figure 3 is a section along line 3-3 of Pig. 2 to illustrate a cross section of the circuit, wherein a Connection of an electrical component, which is shown in phantom, is attached to the circuit,

G. 4 several double-sided postings after the hiring in arrangement together with connections, which from the electrical assembly according to Pig. 1 go out in perspective Position,

Pig. 5 a connection after attachment and fastening within a saddle part of a Leitvng a double-sided Circuit according to an exemplary embodiment of the hiring in perspective partial representation.

According to Pig * 1, an electrical component, in this case in Porm of a small crossbar switch 11 according to the type of German patent specification 1 800 156 with several connections 12-12 provided that of a fairly limited area one Go out side of the switch and are connected to circuit parts of the switch, such as switch contacts to Establish connections between the circuit parts and external circuits. As an example of a type of circular rail switch 11 with a higher connection density, the connections are arranged in spaced rows, each

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At the end of each row is a distance of 5.31 mm from adjacent connections in the same row. Each row of terminals is spaced 5.60 mm from adjacent rows of terminals. In one type of crossbar switch 11, which has a high connection density, twenty groups of six connections 12-12, each for a total; number of 120 connections in each row, provided; there are twelve series of connections. Generally go 1440 arrival \ sohlüsse from an area whose dimensions 640 χ be 64 mm.

During the eventual operation of the switch 11, it is necessary connect each port 12 of each group within a given row of ports to its corresponding ports in the remaining groups of the same grater. It is therefore easy to see that, in view of the high visibility of the connections 12-12, an arduous and time-consuming operation would be required in order to cope with the usual wiring ?? -Technique to connect the connections with each other and also to attach the lines to the connections. Would example, if j is a standard wiring is used, the encryption \ should wiring with changing running inside the labyrinth of the terminals 12-12 are carried out in order to avoid crossover connections. Furthermore, sufficient clearance had to be provided at the free ends of the terminals 12-12 to facilitate the connection, for example in the form of a wire-wound connection, from the terminals to the external circuits. It became apparent in the development of the small crossbar switch 11 that certain means had to be developed to achieve an easy and relatively rapid connection of the selected terminals 12-12 and to keep the switch wired at a reasonably low cost.

From Flg. 2 results in a double-sided, flexible, essentially flat, semi-rigid printed circuit 13 with a base H, which is flexible and consists of a non-conductive

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Material consists, for example, polyimide film. In the special embodiment of the double-sided printed circuit 13 according to Mg. 2 are six parallel collecting lines 16-16 running at a distance in the longitudinal direction on one side of the base attached and extend over the entire length of the pad.

A plurality of groups 17A, 17B ... 17L of leads 18-18 are attached to the opposite side of the pad 14 and extend generally transversely between opposite longitudinal edges 19 »21 of the pad. When checking the arrangement of the connecting lines 18-18 of group 17A, it emerges that the line located furthest to the left run essentially over the entire width of the base and the line located furthest to the right from the longitudinal edge 19 towards the longitudinal edge 21, but only over a short distance. The remaining connecting lines 18-18 run at varying distances from the edge 19 of the base 14 towards the edge 21 thereof. The remaining groups 17B, 17L of the connecting lines 18-18 are arranged in a similar manner.

Each left-most connection line 18 of the group 17A-17L is connected to the uppermost manifold 16 through hole connections connected, illustrated by circles 22-22. By using the through hole connections 22-22, each leftmost connecting line 18 of the group 17A-17L connected in this way to the leftmost leads of the other groups of leads. The remaining leads 18-18 of each of the groups 17A-17L are connected in a similar manner so that each port 12 is made up of six groups of six ports in a given row is on the corresponding port in the remaining groups of ports.

The collecting line 16-16 and the connecting line 18-18 can be attached to the substrate H in any way, for example by positive deposition of the conductive material on the substrate H. in a given pattern. Additionally

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For example, in one embodiment, the backing 14 may be composed of any non-conductive material, such as a polyimide film, sufficient to provide a flexible but semi-rigid support for the lines 16-16 and 18-18. According to another embodiment of the guide, the base 14 can be rigid. For example, the base 14 can comprise a sheet metal with a coating of insulating material. While the illustrated embodiment of switch 11 is illustrated with six terminals 12-12 in each of groups 17A ~ 17L, it is to be understood that any number of terminals other than six terminals may be included in each group without departing from the spirit of the art.

Subsequent to the attachment of the lines 16-16 and 18-18 to the pad 14, an elongated opening 23 is punched out and formed in each of the connecting lines 18-18 at a location which is adjacent to the end of the line which is adjacent to the edge 19 of the Document 14 ends as in Pig. 2 is illustrated, the edge being common to all connection lines. The opening 23 can also continue through the support 14. As evidenced by Pig. 2, 3 shows that a longitudinal section of the substrate 14, which lies next to the edge 19 and comprises the elongated openings 23-23, is formed with a longitudinal fold 24. The fold 24 in the base 14 results in a knuckle-like structure near the edge 19 of the base, so that each of the elongated openings 23 results in a saddle 26 to accommodate a corresponding one of the connections 12-12 of the crossbar switch 11. The saddle 26 results in a receptacle which is in a plane offset with respect to the remaining parts of the connecting lines 18-18.

Then a non-conductive PiIm 27, which can be flexible, attached over the longitudinal collecting lines 16-16 and glued to the lines as well as the neighboring ones Part of the pad 14 connected to isolate the busses from external elements. In addition, a

are longitudinal, non-conductive film that may be flexible, applied over portions of the leads 18-18 where recessed i the saddles 26-26, in order to isolate the parts of the AnschluSleitungen relative to the outer elements.

Fig. 5 shows a cross section of double sided circuit 13 taken along line 3-3 of Pig. 2. In dash-dotted lines a connection 12 is shown which extends from the switch 11 , with an intermediate part of the connection within the saddle 26 running. The saddle 26 does not form an opening in which the connection 12 runs through the circuit, but merely a receptacle on which the intermediate part of the connection to be arranged is attached. This enables the double-sided circuit 13 with a selected series of terminals 12-12 to be easily and firmly attached.

In one mounting process, the circuit 13 is converted into a Positioned below the selected row of connections 12-12. Thereafter, each of the saddles 26-26 is the circuit 13 in visible alignment with the associated connection 12; the circuit is moved upwards so that all the saddles of the Circuit move into engagement with adjacent parts of associated terminals.

If a perforated structure was used in a printed circuit board, the orientation would be and that Inserting the circuit with the connections a difficult gate passage with regard to the position of the passages of the circuit opposite the free ends of the connections as well as looking * the high density of connections.

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Referring to Fig. 4, a first is one of the double-sided circuits 13-13 arranged below the lowest row of connections 12-12, the longitudinal edge 21 of the circuit essentially next to the Part of the switch 11 is attached, from which the connections extend. After the double-sided circuit 13 below has been attached to the bottom row of connections 12-12,

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a manipulation of the circuit follows for the purpose of aligning the outer left connection line 18 of the circuit, with the extreme left connection of the switch 11 in the lowest Row is located. The connection lines 18-18 of the double-sided circuit 15 were on the base H in parallel and at a distance arranged, wherein the center line distance between the connecting lines equal to the center line distance between the Connections of each row is. The connecting lines 18-18 are ready now in alignment with associated ports 12-12 on which they are to be attached and secured. The circuit 13 is then raised so that portions of each of the terminals 12-12 are detected by the saddle 26 of the associated connecting lines 18-18.

After the parts of the connections 12-12 are mounted in the associated saddles 26-26 of the associated connection lines 18-18 were, as in Pig. As illustrated in Figure 5, molten solder is placed in the area of each saddle, so dag Solidifying the solder each connection is no longer electrically connected but also to the associated connection line is being held. Since the circuit 13 has a low weight, the soldered areas of each saddle 26 are sufficient and terminal 12 to form the only means by which the circuit is fixedly attached to switch 11 is.

Since the saddles 26-26 of the connecting lines 18-18 a given Circuit 13 are aligned in the longitudinal direction, the Terlötungvorgang when soldering the connecting lines with the associated Connections 12-12 of a given series in a relatively short period of time and relatively easily be achieved. This enables a person performing the soldering operation to move a soldering device and solder in one relatively straight line along the longitudinal path of the saddles 26-26 next to the free ends of the connections 12-12.

According to FIG. 4, a second circuit 13 is then established between dex

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lowest row of connections 12-12 and the next row of connections located on the bottom row attached The alignment and attachment then follows the same process as the attachment of the circuit 13 to the lowest one RsiiiC τοπ connections 12-12 * This note will be pursued, attached to each row of terminals 12-12 and electrically connected to an associated double-sided printed circuit board 13-13 is connected.

When the arrangement is complete, the selected ports 12-12 in each row of ports are connected by the associated service lines 18-18 and the busses 16-16. For example, in the illustrated switch 11, the connections 12-12 are also separated in groups of six connections each. When the double-sided circuit 13 of the foregoing description, in accordance groups 17A - 17L is disposed _f Bteht each terminal 12 of a group of terminals to the corresponding terminal in each of the other groups of terminals within a given row in combination. This creates a connection arrangement which is easy for switch 11 to be effective in the desired manner.

The width of the double-sided printed circuit 13 is shallow to allow a substantial free-ended portion of connector 12 to extend from saddles 26-26 after the Circuit has been assembled and connected to the terminals. This essential free-ended part of the connections 12-12 subsequently enables the wire wrapping operations between the connections and external circuits which make use of the switching options of switch 11

It enables the semi-rigid nature of the printed label 13 easy manipulation and adjustment of the circuitry between the closely spaced rows of terminals 12-12 and easy alignment of the circuit with the associated connections · As a result of the semi-rigid nature of the Circuit 13 becomes the circuit lightly during the soldering process

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the connecting lines 18-18 held with the associated connections 12-12. Furthermore, the semi-rigid nature of the printed circuit 13 that it is held in a position relatively close to the bottom of the row of terminals 12-12, to which it is attached and secured, with the hanging of the circuit on the Row of connections immediately below is excluded.

In view of the semi-rigid nature of the printed circuit 13, the outer films 27, 28 are not required to the To achieve the intended purpose of the design of the circuit 13 according to the invention. However, in order to prevent the collecting line and the connecting lines 16 and 18 in undesired When connected to unassigned terminals 12-12 or other elements outside of the desired connections, the films 27, 28 are applied over the leads in the manner previously described in connection with Figs.

Claims (7)

• · ·. I 111 I · · I> I A_n_s_ £ _r_ü_c_h_e £ A double-sided printed circuit board having at least one pair of conductive paths attached to one side of the substrate, at least one conductive path attached to the opposite side of the substrate, which is connected to each of the pair of conductive paths to form the pair of conductive paths together to connect, at least parts of the Support each conductive path of the pair of conductive paths, characterized in that a saddle (26) is provided, on which at least parts of the connections (12-12) of the external circuits can rest to the connection make connections easier. 2. Circuit according to claim 1, characterized in that the pair of conductive paths (16-16) is mounted in its entirety on one side of the base (14 ·). 3. Circuit according to one of claims 1 or 2, characterized in that the base of polyimide material is formed ge . 4. Circuit according to one of claims 1-3, characterized in that the parts of the base (H) which comprise at least parts of the pair of conductive paths (16-16) are provided with a fold (24) on which the saddles ( 26) of the pair of conductive paths are arranged so that the saddles are excellently positioned for attachment with external terminals (12-12). 5. A circuit according to claim 4, characterized in that a Part of each pair of conductive paths forming the saddle is formed with an opening around the saddle to form on the fold (24) of the pad. - ί- -. I »I 1 • i ■ ti 6. Circuit according to one of claims 1-5 » marked -, chnet by an insulating material ( 27-28) in attachment over the parts of the pair of conductive paths with the exclusion of the saddles and over the one conductive path. 7. A circuit according to any one of claims 1-6, characterized in that DAG a receptacle is formed in each line of the conductive paths (18-18) (29) to accommodate one terminal of a circuit and to keep äuöercn engaged.