EP2752026A1

EP2752026A1 - Construction unit and method for producing a construction unit

Info

Publication number: EP2752026A1
Application number: EP12756416.9A
Authority: EP
Inventors: Ralf-Dieter Busse; Heiko Neumetzler
Original assignee: Tyco Electronics Service GmbH
Current assignee: Commscope Technologies LLC
Priority date: 2011-09-03
Filing date: 2012-08-27
Publication date: 2014-07-09
Also published as: DE102011112441A1; CN103918278A; WO2013030159A1

Abstract

The invention relates to a construction unit (50) for telecommunications and data technology, comprising at least one contact element (1, 10, 20, 30) and a functional element, more particularly an overvoltage arrester (40), wherein the contact element (1, 10, 20, 30) comprises a terminal contact at least at one end (2, 3) and a connecting area(4), at which the functional element is welded to the contact element (1, 10, 20, 30), wherein the connecting area (4) has a flat section with at least one convexity (5) that defines a welding point and/or effects an alignment with the functional element, and the invention relates to a method for producing said construction unit.

Description

Assembly and method for producing a structural unit

The invention relates to a structural unit and a method for producing a structural unit for telecommunications and data technology.

In connection or distribution modules of the telecommunications and

Data technology are usually arranged contact elements, the

for example, have a wire connection contact. About these

Contact elements are turned on, for example, double conductors. It is further known in or between the compounds functional elements such as surge arresters, capacitors,

Filter circuits, splitter devices or the like to switch. This is done either via printed circuit boards in the connection or distribution module or the connection or distribution module has isolating contacts, in the plug or magazine can be plugged with the functional elements from the outside. Both solutions, however, require additional space.

The invention is therefore based on the technical problem to provide a structural unit and a method for producing a structural unit, by means of which a compact connection between a contact elements and a functional element can be produced.

The solution of the technical problem results from the objects with the features of claims 1 and 9. Further advantageous embodiments of the invention will become apparent from the dependent claims.

For this purpose, the unit for the telecommunications and

Data technology, a contact element and a functional element, in particular a surge arrester, wherein the contact element has at least at one end a terminal contact and a connection region on which the functional element is welded, wherein the connection region has a flat portion with at least one bulge, the defines a welding point and / or an adjustment to

Functional element causes. This will be a particularly compact

Unit realized. The welding is preferably carried out by laser welding. Depending on the embodiment, the connection region can be arranged on the end of the contact element opposite the connection contact or in a region between the two ends, in which case connection contacts can be arranged at both ends. The connection contacts may be, for example, insulation displacement contacts, wire-wrap contacts, crimp contacts, spring contacts or fork contacts, wherein, if terminal contacts are arranged at both ends, these may be identical or different.

In one embodiment, the functional element is as

Überspannungsabieiter formed with at least two electrodes, wherein at least one electrode comprises an outer electrode, an inner electrode and a Schweißbutzen, each lying in different planes. In this case, the welding is preferably carried out on the inner electrode or the Schweißbutzen. The reason for this is that the

Surge arrester in the area of the outer electrode with a

Ceramic body are soldered. If it is a Gasabieiter, so can melt by the heat during welding, the solder and escape the gas. Therefore, in embodiments without weld studs (ie, only with outer and inner electrodes) also preferably welded to the inner electrode. Is the functional element a three-pole

Überspannungsabieiter with fail-safe contact, so this preferably has two electrodes with outer electrodes, inner electrodes and Schweißbutzen, then preferably to each of these two electrodes

Contact element is welded.

In a further embodiment, the bulge has at least one embossment. Under an embossing is understood that by means of a tool pressure is exerted on the contact element, so that it is a Material bulge comes. The embossing is preferably a defined weld, over which a secure mechanical contact between the contact element and functional element can be made, which is necessary for the welding. In one embodiment of the functional element as Überspannungsabieiter the contact element is adjusted to Überspannungsabieiter such that the embossing on the

Welding or the inner electrode is located. If the weld point can be selected centrally, ie in the middle of the weld joint or in the middle of the inner electrode (if no weld joint is present), a weld point is generally sufficient. If this is not possible, preferably at least two spot welds are used to better compensate for the forces occurring at the spot welds, for example two spot welds offset by 180 ° or three by 120 °.

In a further embodiment, the bulge is dome-shaped or teilkalottenförmig. Under a dome is doing a ball cut

(Ball cap) understood, where in addition the upper ball cap part

is cut. This dome can be transformed, for example, by punching, bending, pressing from the flat connection area. Under a partial calotte is understood that additionally at least a portion of the dome perpendicular to the two flattened levels

is cut away. The advantage of this embodiment is that less material has to be reshaped to make the bulge. The dome-shaped or teilkalottenförmigen bulges preferably cause an adjustment to the functional element.

In a further embodiment, the dome-shaped or partially dome-shaped bulge is open, wherein the edge region of the bulge has at least two embossments. The opening is preferably round and has a slightly larger diameter than the diameter of a Schweißbutzens so that it can dive through the opening in the calotte or Teilkalotte. In an alternative embodiment, the dome or

closed partial dome-shaped bulge, wherein the bulge has a central embossing. In this case, the embossing can also be opposite to the direction of the dome-shaped bulge. This depression can then be placed, for example, around the weld joint, so that this embossing represents welding point and adjustment at the same time. It is also possible to provide more embossing when using a closed dome.

In a further embodiment, the contact element consists of a copper-zinc alloy, bronze or beryllium bronze. These materials have both good electrical transmission properties and can be welded well.

In a further embodiment, the contact element has a

Surface coating of a nickel-tin compound or silver, in particular the improved alloying between

Contact element and functional element serves and how a solder acts.

The invention will be explained in more detail below with reference to preferred embodiments. The figures show:

Fig. La is a plan view of a schematic contact element with an open dome and embossments;

Fig. Lb is a sectional view through the illustration of FIG. La;

Fig. 2a is a plan view of a schematic contact element with a

stamping;

FIG. 2b is a sectional view through the illustration according to FIG. 2a; FIG. a plan view of a schematic contact element with a closed dome and a central embossing; a front perspective view of a contact element with teilkalottenförmiger bulge; a rear perspective view of the illustration of FIG. 4a; a front view of a unit of two

Contact elements according to Fig. La and lb and a

surge; a side view of the embodiment of FIG. 5a; a perspective view of the embodiment of FIG. 5a; a perspective view with fail-safe contact; a front view of a unit of two

Contact elements according to Fig. 2a and 2b and a

surge; a side view of the embodiment of FIG. 6a; a perspective view of the embodiment of FIG. 6a; a front view of a unit of two

Contact elements according to Fig. 3a and 3b and a

surge; FIG. 7b side view of the embodiment according to FIG. 7a; FIG.

Fig. 7c is a perspective view of the embodiment according to

Fig. 7a and

Fig. 8 is a perspective view of a surge arrester

(State of the art).

In Figs. La and lb is a contact element 1 in a first

Embodiment shown schematically. The contact element 1 comprises a first end 2 and a second end 3, which is the first end of the second

opposite. Between the first end 2 and the second end 3 is a connection region 4. The connection region 4 has a flat region, from which a bulge 5 is formed. The bulge 5 is formed as a cap 6 with an opening 7. The cap 6 has the shape of a double spherical section, so that form two flat surfaces, namely the flat base surface of the contact element 1 and a smaller annular surface 8. This annular surface 8 has four

Embossments 9, which are embossed in the direction of the bulge 5, so projecting beyond the annular surface 8. The four embossments 9 are arranged offset on the annular surface 8 at an angle of 90 ° to each other. Alternatively, three embossments 9 arranged offset by 120 ° or two embossments offset by 180 ° to each other can be used. At the first end 2 and / or the second end 3 are

preferably not shown terminal contacts such as

Insulation displacement contacts, wire-wrap contacts, fork contacts,

Contact tongues or similar contacts arranged.

FIGS. 2 a and 2 b show an alternative contact element 10, wherein the bulge 5 is a single central embossment 9. A further alternative contact element 20 is shown in FIGS. 3a and 3b. The bulge 5 comprises a closed calotte 6 with a circular area 21. The circular area 21 has a central embossment 9, which is opposite to the direction of the bulge 5.

Finally, another alternative is shown in FIGS. 4a and 4b

Embodiment of a contact element 30 shown in which the

Bulge 5 is formed as a partial calotte 31 with opening 32.

Accordingly, a doubly truncated circular ring 33 is formed, on which two embossments 9 are introduced in the direction of the bulge 5.

It should be noted that otherwise this embodiment is analogous to the embodiment of FIG. La and lb. However, too

Embodiments without opening 32 possible, in which case a central embossing analogous to FIGS. 3a and 3b would be used.

Before now the operation of the contact elements 1, 10, 20, 30 will be explained in more detail, the basic structure of a surge arrester 40 will first be explained in more detail with reference to FIG.

The surge arrester 40 comprises a cylindrical ceramic 41 filled with gas. At the bottom or lid of the cylinder, two electrodes 42 are arranged, which are of similar construction. In this case, the electrode 42 in each case comprises an outer electrode 43, an inner electrode 44 and a Schweißbutzen 45, which usually serves to weld contact wires to the Schweißbutzen 45, if they are needed. The

Outer electrode 43, the inner electrode 44 and the Schweißbutzen 45 lie with their surface in each case in other planes, wherein the plane of the

Schweißbutzens 45 between the plane of the outer electrode 43 and the plane of the inner electrode 44 is located. At the center, a third electrode 46 is arranged, which is connected to a fail-safe contact 47 via a solder. The third electrode 46 is connected in operation to ground, wherein at a Overvoltage melts the solder, so that the fail-safe contact 47 contacts the two outer electrodes 43 and thus short-circuits to ground.

The production of a structural unit 50 comprising two contact elements 1 and a surge arrester 40 will now be explained in more detail with reference to FIGS. 5a to 5d, with these and the contact element 1 being shown in section in FIG. 5a in the region of the left electrode 42. Through the opening 7 in the cap 6 of the Schweißbutzen 45 dives into the cap 6 and this can dive between outer electrode 43 and Schweißbutzen 45.

Because of the embossment 9, it is ensured that the embossings 9 have mechanical contact with the inner electrode 44 of the surge arrester 40. After the adjustment of contact element 1 and

Surge arrester 40, these can be welded by means of a laser. The embossings represent 9 spot welds, wherein it should be noted once again that two embossments 9 or two spot welds

are sufficient, even if four imprints 9 are shown in the illustration. Alternatively or additionally, the welding can also take place between the edge of the dome 6 and the weld joint 45.

FIGS. 6a to 6c show an assembly 50 comprising two contact elements 10 and one surge arrester 40. That's it

Contact element 10 on the outer electrode 43 of the surge arrester 40, wherein the central embossment 9 touches the Schweißbutzen 45. The central embossment 9 then represents the welding point for the laser welding. The advantage over the embodiment according to FIGS. 5 a to 5 d is that fewer welding spots are required and that at the thermally insensitive point of the surge arrester 40

is welded. The disadvantage is that the adjustment between the contact element 10 and surge arrester 40 does not automatically take place through the bulge 5, but must be done, for example, by a placement machine. FIGS. 7a to 7c show a structural unit 50 comprising two contact elements 20 and one surge arrester 40. Here, the dome 6 immersed between the outer electrode 43 and Schweißbutzen 45, wherein the central embossment 9 sets like a cap on the Schweißbutzen 45 and is in mechanical contact with this. The advantage of this embodiment is a largely automatic adjustment via the cap 6 and an optimum spot weld of the embossment 9 over the weld joint 45.

LIST OF REFERENCE NUMBERS

1 contact element

2 first end

3 second end

4 connection area

5 bulge

6 dome

7 opening

8 annular surface

9 embossing

10 contact element

20 contact element

21 circular area

30 contact element

31 partial calotte

32 opening

33 circular ring

40 surge arresters

41 cylindrical ceramic

42 electrode

43 outer electrode

44 inner electrode

45 welding pieces

46 third electrode

47 Fail-safe contact 50 Unit

Claims

claims

1. unit (50) for telecommunications and data technology,

comprising at least one contact element (1, 10, 20, 30) and a functional element, in particular a surge arrester (40), wherein the contact element (1, 10, 20, 30) has a connection contact at least at one end (2, 3) and a Connecting region (4), on which the functional element with the contact element (1, 10, 20, 30) is welded, wherein the connecting portion (4) has a flat portion with at least one bulge (5) defining a welding point and / or an adjustment to

Functional element causes.

2. Assembly according to claim 1, characterized in that the

Functional element as Überspannungsabieiter (40) with at least two electrodes (42, 46) is formed, wherein at least one electrode (42) an outer electrode (43) and an inner electrode (44) or an outer electrode (43), an inner electrode (44) and a

Welding (45), each lying in different planes.

3. Assembly according to claim 1 or 2, characterized in that the bulge (5) has at least one embossment (9).

4. Assembly according to one of claims 1 to 3, characterized in that the bulge (5) is dome-shaped or teilkalottenförmig.

5. Assembly according to claim 4, characterized in that the

dome-shaped or teilkalottenförmige bulge (5) is open, wherein the edge region (8, 33) of the bulge at least two embossments (9).

6. Assembly according to claim 4, characterized in that the

dome-shaped or teilkalottenförmige bulge (5) is closed, wherein the bulge (5) has a central embossing (9).

7. Assembly according to one of the preceding claims, characterized

in that the contact element (1, 10, 20, 30) consists of a copper-zinc alloy, bronze or beryllium bronze.

8. Assembly according to one of the preceding claims, characterized

in that the contact element (1, 10, 20, 30) has a

Surface coating of a nickel-tin compound or silver has.

9. A method for producing a structural unit (50) for the

Telecommunications and data technology, by means of at least one contact element (1, 10, 20, 30) and a functional element,

in particular a surge arrester (40), wherein the

Contact element (1, 10, 20, 30) at least at one end (2, 3) has a connection contact and a connection region (4), wherein the connection region (4) has a planar portion with

at least one bulge (5), which defines a welding point and / or causes an adjustment to the functional element, wherein contact element (1, 10, 20, 30) and functional element are adjusted to each other and welded.

10. The method according to claim 9, characterized in that the

Welding by means of laser welding takes place.