ES2254275T3 - CONNECTION DEVICE - Google Patents

Abstract

Connection device (2) for connecting multiple individual conductors (10) of a first line (6) to respective individual conductors (12) of a second line (8), with a box (4) and with a contact element (20), which has contact pins (22) that act according to the insulation penetration principle, with a cutting area (36) comprising a cutting edge (38) for the contact of the individual conductors (10A, 12A ) corresponding to each other, characterized in that at least in a contact area (47) the contact pins (22) have an elongated and ellipse-shaped section perpendicular to their longitudinal axis (60).

Description

Connection device.

The present invention relates to a device connection for connection of multiple individual conductors from a first line to corresponding individual conductors of a second line, with a box and with a contact element, which It has contact pins that act according to the principle of Insulation penetration technique, with a cutting area comprising a cutting edge for the contact of the individual drivers corresponding to each other.

Such a device is known by the US 5,934,930. It is used, for example, for the splicing of a branch line or connection to a power line. A connection device of this type allows to connect a consumer or device to a power line through a branch line On the device known from the US document 5,934,930 a first line or line of power between a contact element and an upper part of the box and a second line or branch line between a piece bottom of the box and the contact element. Each of both lines presents multiple individual conductors that are contacted by conical contact pins, according to the Principle of insulation penetration technique. With that, the contact pins protrude on both sides of the element Contact. For fixing the individual conductors of the branch line, the box has grooves in which Insert the individual conductors. The contact element has properly shaped nerves that fit into the grooves of the lower part of the box and fix in this way Individual drivers in position. This has to ensure that individual drivers are held in their position during the contacted, so that during the contacted cannot avoid the configured contact tip conical

In each of the documents DE 198 14 182 A2 and From 195 21 178 C1 contact pins with an edge of cut acting on the principle of the penetration technique of isolation.

The invention aims to indicate a connection device that allows safe counting.

According to the invention, the objective is achieved. by means of a connection device to connect several conductors  first line individual to individual drivers corresponding to a second line, with a box and with a contact element that has contact pins that act according to the principle of insulation penetration technique for the corresponding individual conductor count between yes, presenting the contact pins a cutting area with a cutting edge The contact pins also have at least in a contact zone, which in contact state touches the driver individual, an elongated cross section and in particular elliptical, perpendicular to its longitudinal axis. The pin of contact is preferably configured in ellipse form or as extended disk

In front of the tapered contact pins with its pointed end, as they are known in the field of Insulation penetration technique, contact pins Proposals shown here present an elongated cutting edge. In the insulation penetration technique, the contact pin penetrates the core of the individual conductor, presenting the conductive core particularly a bundle of wired wires separated. For that reason, the contact pins differ of the so-called sharp contacts in which it is only cut the insulation of the individual conductor.

The elongated cutting edge has the essential advantage of the individual driver to contact is cut in his longitudinal direction and with it, its individual wired wires they are separated only slightly laterally. This lateral displacement is small, compared to displacement caused by a conical tip. For that reason, the wired wires They are clearly less requested during contact. Further, due to the elongated cutting edge, the individual driver to contact is guided more efficiently during the contact, of so that the danger of a conductor separation decreases and, In this way, secure contact is guaranteed.

Compared to cross section known circular of the conical contact pins, is produced by means of the ellipse shaped transverse surface a contact obviously more efficient. On the one hand, lateral displacement of the individual wired wires is smaller, so the same They are best adopted to the contact pin. On the other hand, at the same time, a contact surface is thus enabled obviously older.

In a preferred embodiment, the cutting edge it has an area that extends backwards and is particularly rounded. Therefore, the cutting edge is bent towards outside, towards the individual driver, so that the driver individual is always cut only by a partial sector of the cutting edge The cutting edge penetrates gradually into the individual driver, cutting the insulation little by little. Is essential the fact that, in this way, a real cut takes place, while with conventional conical contact points the Tip is only sunk and the material separated to all sides. Due to the successive penetration in the individual driver, the necessary forces for contact are reduced. This is particularly advantageous when lines are contacted multifilar.

In a particularly advantageous configuration, the cutting area is shaped like a disk, specifically in the sense of a particularly curved disc on both sides. In this case, the disk edge, not necessarily has to be configured as a circular line, but it can also extend so elliptical or oval. The disk-shaped configuration of the zone cutting allows careful contact with relatively effort reduced. With this, careful contact is influenced essentially because of symmetric configuration and particularly rounded.

In a preferred embodiment, to the cutting zone a stem is added, with a blunt side edge, particularly slightly rounded. Therefore, the contact pin flat, on its extended side sides, essentially parallel, It is not made up of living edges. In this way, it is reduced the danger of injury or a cut of wired wires individual driver's individual during penetration and contact pin penetration.

Preferably, the contact pins are designed with two opposite cutting zones and protrude in both sides above the contact element, arranged between a piece top of the box and a bottom piece of the box, so that both lines to be joined together are superimposed. In effect, for example, the first line between the piece is imprisoned upper case and contact element and second line between the contact element and the lower part of the box.

An alternative configuration with drivers juxtaposed can also be done, without restrictions of the function of the contact pins, and leads to a construction flat.

In a preferred embodiment, for the guide of the side of the contact pin box, the box features cavities with a geometry corresponding to the pins of Contact. Consequently, the contact pins pierce completely individual drivers and arrive in state contacted from the contact element to the box, where their points, that is, its cutting areas, are guided or held.

In an embodiment especially Preferably, the contact pins are shaped different, to enable the contact of different types of individual drivers A pin connection device of contact of this type, it is particularly suitable, for example, for mixed data and current lines required for connection of electricity consumers, where consumers are addressed, for example, by a data bus system and are Simultaneously powered by current through a line mixed. The different configuration of the contact pins it can also be done independently of the way special of the cutting area, therefore it is also suitable for known conical design contact pins.

Preferably, at least one pin of Contact is divided into multiple functional zones.

This allows a selective and safe contact of special individual drivers multiple construction layers or multiple wraps.

In particular, in this case, the pin of contact has a contact area surrounded by an area of isolation. In this way, advantageously a unwanted conductive connection through the contact pin between different sectors of a special individual driver of this type.

Preferably, the contact pin is arranged for the contact of an individual driver with a shielded, where the isolation zone and the contact zone are they are arranged in such a way that, in contacted state, the contact zone touches the core of the individual conductor, and that the Isolation zone completely covers the shield. This way, a short circuit between the shielded and conductive core.

According to another preferred embodiment, the element of contact has nerves, which form a support surface between contiguous individual conductors of the parts lines spacers. In flat cables these spacer parts are formed, for example, by insulation between conductors individual. In particular, in flat cables these parts spacers are configured as separators in which the drivers are kept apart from each other by these separators

For a good guidance of the lines, in a proper configuration a tray of accommodation between each of the two contiguous nerves for one of Individual drivers In this case, preferably, the section profile of the housing tray is adapted to section profile of the first or second line in the area of corresponding individual driver. And simultaneously preferably the section profile of the ribs is adapted to the section profile of the first or second line in the area of the spacer parts

For safe guidance on all sides of lines, the box preferably presents with respect to the nerves of the corresponding nerve contact element of equal effect.

Examples of embodiment of the invention are explained below in detail by drawing, which show the corresponding schematic representations,

Figure 1, a box connection device closed with a power line and a bypass line,

Figure 2, a connection device, according to the figure 1, exploded,

Figure 3, a connection device in a section view,

Figure 4, a contact pin in the form of ellipse,

Figure 5, a contact pin in the form of ellipse with multiple functional zones,

Figure 6A, a sectional view of the section 6A-6A of the contact pin, parallel to its axis longitudinal, according to figure 4,

Figures 6B, C, section geometries alternatives to that shown in figure 6A,

Figure 7A, a sectional view of the section 7A-7A of the contact pin, perpendicular to its longitudinal axis, according to figure 4,

Figures 7B, C, section geometries alternatives to that shown in figure 7A.

In the figures the pieces of Same effect with equal references.

According to connection device 2, shown in Figures 1 and 2, it presents a box 3 of three pieces to through which a first line is driven, for example, a supply line 6. A second line, for example, a branch line 8 flows into connection device 2. Both lines 6, 8, in the embodiment example, are made in each case as a multifilar flat cable. The line of Power 6 features multiple individual conductors 10A to 10D and bypass line 8 presents the conductors individual 12A to 12D respectively. Through the device connection 2 galvanically connect the conductors to each other corresponding individual, for example, the individual driver 10A with the individual driver 12A.

As can be deduced, in particular from the figure 2, for the contact, feed line 6 is introduced between a lower part of the box 14 and a center piece of the box 16 and the branch line 8 between the center piece of the box 16 and a upper part of the box 18. The center piece of the box 16 it has a contact element 20 from which both protrude multiple sides contact pins 22 (see also figure 3).

Box pieces 14, 16 and 18 present each one on its front faces openings 24 for the line of feed 6 or for branch line 8. Because the branch line 8 does not pass through box 4, the top of the center piece of the box 16 and the top part of the box 18 they have only one front opening 24. The centerpiece of the box 16 has positioning pins 26 that extend, both in the direction of the upper part of the box 18, and the bottom piece of box 14 and fit there, with box 4 closed, in positioning openings 28. In the lower part of the box 14 and in the upper part of the box 18 are arranged positioning openings 30 in which the tabs of Matching 32 corresponding to the centerpiece of the box 16. This fit of the box parts 14, 16, 18, in combination with a tight flange 34 surrounding the centerpiece of the box 16, it allows a simple and fast assembly, and guarantees time that the contact area is hermetic with its surroundings.

The contact element 20 has a pin of contact 22 for each pair of conductors in correspondence, by example, 10A, 12A. For each pair of conductors they can also be arranged multiple contact pins 22. The pins of contact 22 are arranged displaced in the direction longitudinal 23 along which lines 6, 8 cross the box 4, where, for example, separate pairs are arranged therein height. The displaced arrangement leads to drivers Individuals 12A to 12D are contacted and displaced laterally in different places with respect to the longitudinal direction 23. In the exemplary embodiment, the adjacent contact pins 22 are arranged in a displaced way, where the first and third as well as the second and fourth contact pins form in each case a pair arranged at the same height.

In the lateral section according to figure 3 you can recognize one of these pairs of contact pins with the 22B and 22D contact pins. They are arranged in the element of contact 20 forming a partial area of the centerpiece of the box 16. The contact pins 22 extend perpendicular to the contact element 20 and have at their opposite ends a cutting area 36 with a cutting edge 38. The side of the pin of contact 22 located between the cutting areas 36 is designated as stem 40.

In the contacted state shown according to the figure 3, each of the contact pins 22B, D pass through total each of the individual conductors 10B, D and 12B, D, the cutting area 36 extending to a cavity 39 of the piece upper part of box 18 or lower part of box 14. These cavities 39 are preferably adapted to the geometry of the cutting area 36 and, in particular, shaped grooved, so that the contact pins 22 meet guided in both pieces of the box 14, 18.

Individual drivers 10, 12 of both lines 6, 8, configured as flat cables, have a core conductor 44 wrapped in an insulation 42 which, for example, is formed by a bundle of individual wired wires. The drivers individual 10A, B; 12A, B are shaped as channels of data and additionally present a shielded 46. The others two types of individual conductors C and D serve in particular For power supply. For the conformation of the cable flat, the individual conductors 10, 12 are covered by a common isolation, having in each case arranged between individual conductors 10, 12 separators 50, to distance with each other the individual conductors 10, 12.

The 22B contact pin used for the armored individual conductor contact 10B, 12B se It is divided into multiple functional zones. Present respect of each individual driver 10B, 12B a contact sector forming a contact zone 47 wrapped by two insulating zones 49. With this, the contact area 47 covers the conductive core 44 and the insulating zones 49 cover the shield area 46, so that a short circuit between shield 46 and the core is avoided conductor 44. The insulating zone 49 is formed, for example, by the placement, particularly by bonding insulating bands on the basic body of the contact pin 22, the Basic body composed of a conductive material.

The contours of the contact element section 20 as well as the lower part of the box 14 and the part upper box 18 are adapted to the contour of section of both lines 6, 8. For this purpose they are arranged ribs 52 between which, in assembled state, the spacers 50 are interlocked. The ribs 52 have each preferably in its front part a hollow in the form of cavity and form a housing cavity 54 for the separators The side surfaces of the separators 52 are They extend in a curved shape, forming the lateral surfaces contiguous with each other another accommodation cavity 56. Between two others accommodation cavities 56 opposite are imprisoned the individual conductors 10, 12. The contoured configuration of the contact element 20 and the box parts 14, 18 makes both lines 6, 8 are held firmly and securely in the box 4 in the case of, for example, a tensile stress. The contoured or profiled configuration acts particularly as counter support for magnetic or electromagnetic forces that appear in high intensity currents and have the tendency of repelling of the individual conductors 10, 12 the pins of contact 22.

Alternatively to the rounded embodiment of accommodation cavities 56, they have a profile rectangular. Similarly, nerves 52 may have a rectangular profile, so that the nerves and cavities of housing 56 forms a crenellated contour. This crenellated contour It is simple to manufacture and also produces a good hold of lines 6, 8, even when the clamping is better in the realization rounded adapted to the section contour of lines 6, 8.

The special configuration of the pins of contact 22 is best shown, by way of example, in figures 4 and 5. There it can be seen that the contact pins 22 are in essential flat objects, meeting at opposite ends of the shank 40 in each, a disc-shaped cutting area 36. He edge of the cutting area 36 forms the cutting edge 38. The contact pin 22 has an elongated shape in total of disk or also an ellipse shaped shape with side edges 58 parallel and preferably blunt.

The contact pin 22 has two conformation characteristics, that is the elongated conformation of the cutting edge 38 and the flat conformation of the pin of contact 22 at least in the contact sector or in the area of contact 47 in which or in which the conductor core 44 is is in contact with the contact pin 22.

As for the cutting edge 38 must mention that in particular it acts in the manner of a blade due to conformation curved backwards in direction to the stem 40 and thus seeks a penetration in the comparatively simple 10, 12 individual conductors of the contact pin 22. This means, at the same time, that the Contact effort is very small. Another point of view of cutting edge 38 elongated compared to a pointed end it is the fact of a better guide in relation to the individual driver 10, 12 respectively. Individual conductors 10, 12 are not made to one side and they are contacted safely.

Of the schematic representation, according to the Figures 6A to 6C, different possibilities of conformation for the configuration of the cutting edge 38.

According to Figure 6A, the cutting edge 38 is configured as a semicircle. Instead of setting in semicircle shape, cutting edge 38 can also be located on a line not bent in a circular shape. The folded embodiment of cutting edge 38 is the embodiment preferred, because with this embodiment a progressive and uniform penetration of the contact pin 22 in the individual drivers 10, 12, without an effort especially big.

The cutting edge 38 is configured alternatively as a polygonal trace as shown, for example, in figure 6B. This is relatively simple to perform from the manufacturing point of view. In the simplest case, the cutting edge 38 is formed in a straight line in the form of knife. Compared to this simpler embodiment, a Enhanced configuration can be seen in Figure 6C in which a blade-shaped flat edge 62 is incorporated into the stem 40 a through chamfers 64.

Regarding the second essential aspect of contact pins 22, that is, its flat configuration, specifically, an elongated section surface perpendicular to the longitudinal axis 60, alternative embodiments are shown in figures 7A to 7C.

The decisive advantage of flat configuration it consists in that the individual conductors 10, 12 are openwork in longitudinal direction and in which its wired wires are only deflected laterally to a small extent. Because of this, his effort is reduced. With the elongated conformation of the section surface, preferably configured approximately in the form of an ellipse or lenticular, as can be seen in figure 7A, a very large contact surface with individual conductors 10, 12 to contact, with only a very small displacement side. In this way, contact security is very high, or expressed in other terms, the contact resistance between the contact pin 22 and the individual driver 10, 12 respectively It is very small.

These two advantages are achieved in the best way through the shape of a symmetrical and rounded section, according to the Figure 7A Alternatively to this, this section form is formed, according to Figure 7B, by a semicircle or also by a rectangle whose side sides meet each other forming a triangle for the conformation of the lateral edges 58, as shown in figure 7C.

The connection device 2 described stands out by multiple conformation characteristics that combined lead to a particularly safe contact of both lines 6, 8 each. These are essentially the special configuration of the contact pins 22 relative to its geometric shape, and its division into multiple functional zones. It can look like another essential feature the contoured formation of the element of contact 20, as well as the lower part of the case 14 and part top of the box 18. The conformation preferably in the form of ellipse of contact pins 22, its division into zones functional 47, 49 and contouring are aspects that also separated and, in particular, independent of each other constitute advantageous conformations of a connection device.

Reference List

       \ dotable {\ tabskip \ tabcolsep # \ hfil \ + # \ hfil \ tabskip0ptplus1fil \ dddarstrut \ cr} {
 2 \ + Contact device \ cr 4 \ + Box \ cr 6 \ + Line of
Power supply \ cr 8 \ + Bypass line \ cr 10A-D
\ + Individual conductors \ cr 12A-D \ + Conductors
Individuals \ cr 14 \ + Bottom part of the box \ cr 16 \ + Piece
center of the box \ cr 18 \ + Top part of the box \ cr 20 \ +
Contact element \ cr 22 \ + Contact pins \ cr 23 \ +
Longitudinal direction \ cr 24 \ + Opening \ cr 26 \ + Tang
positioning \ cr 28 \ + Positioning opening \ cr 30 \ +
Lace opening \ cr 32 \ + Lace tab \ cr 34 \ + Flange
Hermetic \ cr 36 \ + Cutting area \ cr 38 \ + Cutting edge \ cr 39
\ + Cavity \ cr 40 \ + Stem \ cr 42 \ + Insulation \ cr 44 \ + Core
Conductor \ cr 46 \ + Shielding \ cr 47 \ + Contact area \ cr 48
\ + Insulation shirt \ cr 49 \ + Insulation zone \ cr 50 \ +
Separator \ cr 52 \ + Nerve \ cr 54 \ + Housing cavity \ cr 56
\ + other housing cavity \ cr 58 \ + Lateral edge \ cr 60 \ +
Longitudinal axis \ cr 62 \ + Edge \ cr 64 \ +
Chamfer \ cr}
    

Claims (15)

1. Connection device (2) for connecting multiple individual conductors (10) of a first line (6) to respective individual conductors (12) of a second line (8), with a box (4) and with an element of contact (20), which has contact pins (22) that act according to the principle of penetration of the insulation, with a cutting area (36) comprising a cutting edge (38) for the contact of the individual conductors (10A , 12A) corresponding to each other, characterized in that at least in a contact area (47) the contact pins (22) have an elongated and ellipse-shaped section perpendicular to their longitudinal axis (60). 2. Device (2) according to claim 1, characterized in that the cutting edge (38) has an area that extends backwards and is particularly rounded. 3. Device (2) according to claim 1 or 2, characterized in that the cutting area (38) is shaped like a disk. Device (2), according to one of the preceding claims, characterized in that a shank (40) with a blunt lateral edge (58) is added to the cutting area (36). Device (2) according to one of the preceding claims, characterized in that the contact pins (22) are formed with two opposite cutting areas (36) protruding on both sides of the contact element (20) disposed between an upper part of the box (18) and a lower part of the box (14). Device (2) according to one of the preceding claims, characterized in that the box (4) for the guide of the side of the box of the contact pins (22) has cavities (39) of a geometry corresponding to the pins of contact (22). Device (2) according to one of the preceding claims, characterized in that the different shaped contact pins (22B, 22D) are arranged for the contact of individual conductors (10B, 12B; 10D, 12D) of different types. Device (2), according to one of the preceding claims, characterized in that at least one contact pin (22B) is divided into multiple functional zones (47, 49). Device (2) according to claim 8, characterized in that the contact pin (22B) has a contact area (47) surrounded by an insulating area (49). Device (2), according to claim 9, characterized in that the contact pin (22B) is arranged for the contact of an individual conductor (10B, 12B) with a shield (46), where the isolation zone (49) and the contact zone (47) is arranged so that, in a contacted state, the contact zone (47) touches the core (44) of the individual conductor (10B, 12B), and that the isolation zone (49 ) completely covers the shield (46). Device (2), according to one of the preceding claims, characterized in that the contact element (20) has ribs (52) that form a support surface for the spacers (50) of the lines (6, 8) arranged between contiguous individual conductors (10, 12). 12. Device (2) according to claim 11, characterized in that a housing cavity (56) for one of the individual conductors (10, 12) is formed between two adjacent ribs (52). 13. Device (2) according to claim 12, characterized in that the section profile of the housing cavity (56) is adapted to the section profile of the first line (6) or the second line (8) in the zone of the respective individual conductors (10, 12). 14. Device (29, according to one of claims 11 to 13, characterized in that the section profile of the ribs (52) is adapted to the section profile of the first line (6) or second line (8) in the area of the respective separators (50). 15. Device (2) according to one of claims 11 to 14, characterized in that the housing (4) has ribs (52) that act in correspondence with the ribs (52) of the contact element (20).