DE2427215C2 - Multipole connector with tool - Google Patents

Description

ic The present invention relates to a multi-pin connector according to the preamble of Claim 1 as well as a tool for pressing insulated conductors into the respective contacts of a Connector according to claim 1.

From US-PS 30 02 176 a connector having the features of the preamble of claim 1 is already known. The connector described in this document is a four-pole connector. The individual contacts of the connector are channel-shaped

and each have an end for receiving the free end of the conductor. The individual contacts can be pushed quickly and easily into a contact socket made of insulating material in an advantageous manner. To connect the respective conductors to the individual contacts, the conductors must be stripped and each individually soldered to the contacts. Such soldering requires considerable skill when making the soldered connection, especially when it comes to miniature connectors. Additionally in addition to the time-consuming and difficult nature of the connection, there must be a further disadvantage of the known connector can be seen in the fact that it

. easy to undesired shunts through solder bridges can come if not soldered with extreme precision.

The US-PS 37 08 853 show a machine for connecting contact terminals to insulated wires. The machine contains two mutually displaceable jaws 12, 24, with a knife on the upper jaw for cutting off wires and an anvil 30 on the lower jaw, which is movable relative to this. is provided. The individual contacts 54 each have a contact tongue 60 and an elongated groove for receiving the free end of the conductor.

To attach the respective wire to the

., speaking terminal, the contact terminal is in recesses 26 placed in the lower jaw, then the respective ladder is placed in the corresponding channel the clamp by hand and the free ends of the wires in turns of a spiral spring to hold of the wire ends inserted. The anvil is then pushed up to the clamps and the upper jaw with it moved down the cutting instrument. The cutting instrument b / .w. the blade 16 thereby separates the wires off the anvil. The machine itself is only used to cut the respective wires to length, while the actual fastening process of the wires in the grooves of the contacts before this cutting process must be carried out by hand (column 3.

panels 54 to 60). The ones provided in the grooves of the contact parts Cutting corners for cutting through the insulation pierce it when the Conductor in the channel and establish the electrical connection between the conductor and the contact. At the

t> 5 Insertion of the wire into the channel can be several Errors occur that can only be avoided with a high level of skill on the part of the operator. The most likely The mistake is that the wire when the

The wire is squeezed too tightly against the edges of the tendon so that either the cutting edge breaks off or the conductor is severed. Furthermore, it can also It can easily happen that the ladder is not only vertical to the Groove are moved, but that this movement is superimposed on a movement in the longitudinal direction of the groove is. As a result, it can easily happen that the cutting edges or cutting corners break off in the channel. The main disadvantage of a Konukt-Ladder connection made with this machine is however, the fact that the individual contacts after their attachment to the individual conductors only with great difficulties can be introduced into a contact socket. Another disadvantage of the known The machine consists of its extremely complex and complex structure.

The present invention is based on the technical problem, a connector according to the preamble of the main claim so that its contacts in a simple and reliable manner without With the aid of complicated tools with insulated conductors, both electrically and mechanically connectable are.

This technical problem is in a connector according to the preamble of the main claim by the Features of the characterizing part of the main claim solved.

The inventive design of the contact, the contact socket and the tool is a completely new fastening process for attaching and contacting the conductor on the contact that is in the socket is introduced, possible. First of all, the conductor is inserted into an end of the channel designed to receive it inserted. This does not cause any difficulties, since the contact itself is designed in the shape of a channel and thus is easily accessible. The insertion of the conductor into the channel leads to a pre-alignment of the conductor opposite the contact. The tool is then aligned with the contact socket and downwards moves, wherein the hold-down of the tool presses the free end of the conductor against the channel that in turn is stiffened by the surrounding contact socket and thus a good counter-bearing for this contact pressure forms. The further, pivoting downward movement of the tool leads the conductor into the notch, which cuts the insulation of the conductor. A longitudinal movement which destroys the connecting web or the notch of the conductor is prevented by the hold-down device. Thus it becomes a safe and a safe one Achieving the separation of the insulation to ensure contact. At the same time, the outer part of the isolated Head pressed into the hall mouth, whereby a automatic alignment of the conductor is achieved. It is particularly advantageous that the conductor insulation, apart from the severed isolation points, does not experience any permanent damage. By adapting of the tool to the formation of the contact and the contact socket is according to the invention every time the ladder is fastened in the same way with reproducible movements and forces introduced into the contact socket. This makes the contact made in accordance with the present invention independent is always produced equally well by a wedge of skill of the operator.

With the tool according to claims 2 to 4, a simple connection between insulated conductors can be made and make the contacts of the connector.

Preferred embodiments of the invention are described below with reference to the drawings explained in more detail. It shows

Fig. 1 is a sectional oblique view of a in an electrical connector seated contact and a tool for inserting a Conductor in the contact according to a first embodiment of the invention,

Fi g. 2 is a somewhat enlarged view in section along the line 2-2 in Fig. 1,

3A shows a partial view of the end face of the tool according to Fig. 1,

F i g. 3B is a partial side view of the tool;

Figure 3C is a plan view of the terminal part of a connector contact into which the tool is in use is introducible,

F i g. 3D a view of the tool from below.

F i g. 4 one on the same scale as FIG. 2 drawn plan view of part of a connector socket a connector seated therein of a connector contact which cuts through the insulation, for which the in Fig. 1 to 3 tool shown can be used,

F i g. Figure 5 is a side view of one for use with the tool according to FIG. 1 to 3 specific full Connector, but without housing,

F i g. 6 is a top view of the connector roughly corresponding the line 6-6 in F i g. 5,

F i g. 7 is a view of the connector from below, roughly along line 7-7 in FIG. 5,
F i g. 8 shows a view of a connector in section approximately along line 8-8 in FIG. 5 with two tools according to a second embodiment of the invention,

F i g. 9 is a front view of one of the FIGS. 8 tools shown,

10 shows an end view of the tool roughly correspondingly the line 10-10 in FIG. 9.

11 shows an end view of the tool roughly correspondingly the line 11-11 in Fig. 9,

Fig. 12 is a view of the tool from below, for example corresponding to line 12-12 in FIG. 9,

FIG. 13 is a view in section along the line 13-13 in FIG. 9;

14 shows a reduced side view of the in FIG shown connector with a detachable tool attached to it,

15 is a partial view of a connector having a as a holder for the tools attached to this slide-on housing and

16 is an end view of the fully assembled Connector approximately in the direction of arrows 16, 16 in FIG. 15.

In Figs. 1 to 8, a basic version is one with Terminal strips for cutting through the insulation of a conductor having contacts equipped with electrical equipment Connector 30 shown, and in FIG. 1 to 3 also a usable for connecting individual conductors Tool 80 according to a first embodiment of the invention. The connector 30 as a whole is in Fig. 5 to 8, and details of the same in FIG. 1 to 4. The connector 30 includes one made of an insulating material molded contact socket 31 with a number of individual contact holders 32. As can be seen in FIG. 1. 5 u.id 8 detects, the contact holders extend 32 completely through the socket 31. A corresponding one is in the contact holders 32 of the socket 31 Number of contacts 33 used. These each have an actual contact part 34 in the form of a thin, resilient metal tongue, the end of which? 35 hook

is bent back in shape and in a narrow holding slot 36 in the socket 31 at one end of the contact holder 32 takes place. Furthermore, the contacts 33 each have a connection part 37 that is integral therewith on, which sits near the outer end in the respective contact holder 32 (Fig. 4, 5, 8). The connector 30 is in one shown in FIG. 5 socket connector 40 shown in dashed lines can be used. The latter can do the contain the same contacts 33 as the connector 30, so that the tools according to the invention in the same Way for the plug part and the socket part of an electrical connection can be used. The in F i g. 5 The connector 30 shown through 8 contains a total of fifty contacts 33. However, this number is dependent widely variable from that of the connections to be established.

As far as described so far and in FIG. 5 to 7, the structure of the connector 30 corresponds essentially that of the multi-pin connector described in US-PS 30 02 176. The individual contacts can be quickly and easily inserted into the socket 31 by opening them from the front, in FIG. 8th that is, from the left, into the individual brackets 32. In the above-referenced U.S. Pat Connection parts of the contacts formed channel-shaped. The conductors are connected to the individual contacts conventionally by soldering. In the case of the use of the tool according to the invention However, soldering is not necessary for certain contacts 33. For this purpose they have each in one piece from one piece of thin, conductive sheet metal molded contacts 33 formations for the Unsoldered connection of an insulated electrical conductor by cutting the insulation when pressing in such a conductor in the connection part of the respective contact.

In Fig. 1, 2 and 4 is a possible embodiment of the at the outer end of the individual contacts 33 seated connecting part 37 shown in large enlargement in this context the term "outer end" denotes in relation to a contact or to a Contact holder of the socket that end to which the individual conductors are or will be connected. This relationship does not change even if the connector 30 is designed so that the connecting parts 37 of the contacts 33 do not extend as an extension of their contact parts 34.

The outer end piece of a contact 33, designed as a connecting part 37, has the shape of an elongated one. Misshapen Cross-sectional channel with a bottom 51 and side walls 52 and 53. One with the side wall 53 of the channel one-piece retaining tab 49 is shown in FIG. 1 angled approximately at right angles to the side wall 53 shown. In this state, the contact 33 can be inserted into the insulating mount 31. After that, will the retaining tab 49 is then set up in order to hold the contact 33 in the holder 32. If contact 33 is fitted somewhat tightly into the holder 32, the tab 49 can, however, also be in the position shown in FIG. 1 shown To remain in position.

The connecting part 37 of the contact 33 contains two connecting webs 54 and 55. The web 54 is made of two the side walls 52nd and 53 punched out web parts formed which are angled towards each other at the end of the channel representing the connecting part 37 and a notch 56 which is open at the top. The top of the notch 56 has downwardly converging, sharp edges for cutting through the insulation surrounding an electrical conductor. In the middle part of the notch 56 the thickness of the bounding edges steadily increases, so that here a transition area to push apart the insulation of a conductor inserted into the notch is formed. The lower part of the notch 56 isi preferably limited by smooth, rounded edges, which slightly divergent pressure jaws for form the tap on an electrical conductor.

The second connecting web 55 of the connecting part 37 is ίο similar to the first web 54. It is composed of two web parts punched out of the side walls 52 and 53 of the channel and angled towards one another. The web parts have beveled, sharp upper edges and are bent back on themselves in the lower part so that, like the parts of the crown 54, they form a notch 58 with a part for cutting the insulation, a transition area and a contact area.
To connect an electrical conductor 61 sheathed with an insulation 62 to the connection part 37, the conductor is, as shown in FIG. 2 and 4, pressed into the two notches 56 and 58 of the connecting webs 54 and 55. When the insulated conductor is pressed into the notches, their converging edges cut into the insulation 62 surrounding it. As the conductor continues to move downward in the notches 54 and 56, the edges thereof, which increase in thickness, force the insulation apart in order to expose the conductor 61 underneath. Finally, the rounded or bent back edges in the lower region of the notch come into sliding contact with the conductor 61 and exert a pressure on it running normal to its axis without cutting into the conductor. F i g. 2 shows the final position of the conductor 61 surrounded by the insulation 62 in the connecting web 55 after the electrical connection has been completed. The conductor occupies the same position in the connecting web 54. The connector 30 has a number of retaining lugs formed in one piece with the insulating mount 31 for the strain relief of the connections. As shown in FIG. 1, 2, 4, 5 and 7, a wall 71 integral with the socket 31 extends transversely over the outer ends of all the contact holders 32 one is aligned with the outer end of a contact holder 32 and merges into this. At the inner end, the slots 72 each merge into an enlarged recess 75, the inner diameter of which is approximately equal to the outer diameter of the insulation 62 surrounding the conductor 61. An extension 76 of each of the individual slots grants access to the connecting webs 54 and 55 of the connection part 37. The width of the extended slot 76 is preferably not significantly less than the full diameter of the insulation 62 surrounding the conductor 61 (FIG. 2 \.

When inserting an insulated conductor through the elongated slot 76 into the connector 37 one of the contacts 33 becomes the conductor at the same time through the insertion slot 72 into the expanded holding recess 75 printed and then recorded in this. When the conductor is pressed in, the walls bend of the slot 72 apart and the insulation 62 of the conductor 61 is slightly

then pushes these parts back into their relaxed position.

In Fig. 1, 2 3A, 3B and 3D, a tool 80 is shown in a simplified basic embodiment of the invention.

shows. The tool 80 is used for pressing in each case of a single insulated conductor 61 into the connection part 37 of a contact 33 and into the one associated therewith the insertion slot 72 and the enlarged recess 75 formed retaining mouth. That in this embodiment For example, tool 80 made of steel has a downwardly protruding portion near one end of its underside Hold-down device 81. From this, a pressure web 82 runs in the direction of the outer end of the Tool. The part of the pressure web 82 adjoining the hold-down device 81 has the same width as this. This width is just slightly smaller than the total diameter of the insulated conductor. The outer tail 83 of the pressure web 82 is somewhat narrower, so that it can easily be inserted into the insertion slot 72 of the shark maui leaves. At the outer end, the tool has a forked guide part 84, which is just far enough is to encompass the insulation 62 of the conductor 61 on both sides. The pressure web 82 can be in the middle part have downwardly protruding nose 86, which between the connection winches 54 and 55 in the connection part 37 can be inserted around the insulated conductor between the connecting webs on the bottom of the connecting part pressing down the forming channel.

To connect the insulated conductor 61, it is shown in the manner shown in FIG. 1 manner shown in dashed lines with his free end inserted into the inner end of the connecting part 37 of a contact 33. Thereupon the tool becomes 80 in the in F i g. 1 and in FIG. 3B to 3D on the contact holder 32 shown in dashed lines and the contact 33 located therein is exposed and then moved downwards, the forked guide part 84 engages the part of the insulated conductor 61 protruding over the outer end of the socket 31 in order to make it aligned on the connecting part 37 of the contact 33 and on the insertion slider 72 of the elastic retaining mouth to keep.

During the further downward movement of the tool, the hold-down 81 and the one protruding from the pressure web grip Nose 86 at the inner end or the space between the webs 54 and 55 of the Connector 37 opposite points of the conductor 61 at. The hold-down 81 exerts a holding pressure on the insulated conductor 61 in order to hold its free end in the inner end of the connection part 37. The tool 80 then continues downward into the position shown in FIG. 2 moved end position, wherein the pressure bar 82, 83 the insulated conductor 61 into the groove of the connecting part 37 and into the insertion slot 72 of the holding mouth presses. Towards the end of the downward movement of the tool 80, the pressure bar presses the conductor into the for cutting through the insulation notches 56 and 58 of the connecting webs 54 and 55 and represents thus the desired conductive connection between the conductor 61 and the contact 33. Simultaneously so that the outer part of the insulated conductor is pressed into the enlarged recess 75 of the retaining mouth, see above that this firmly grips the head and holds it in its connection position If the tool 80 with the at the bottom of the pressure web 82 protruding nose: 86 provided is, this presses the conductor in the space between the connecting webs 54 and 55 on the bottom of the Connector 37 down.

When using the tool 80, the insulated conductor 61 cannot come out of the channel-shaped connection part 37 of the contact 33 slip out, but is constantly guided safely during the establishment of the connection When making the connection, the conductor's insulation will not be excessively deformed or crushed. the permanent deformation of the insulation remains essentially due to the cutting and forcing apart the areas pressed into the notches of the connecting webs 54 and 55 are limited. F i g. 2 shows the completed one electrical connection in the area of the connecting web 55. At the points where the holding-down device 81 and the nose 86 touch down, slight, limited deformation of the insulation may occur. When pushing in

ίο the conductor through the insertion slot 72 is through the insulation somewhat compressed. However, this deformation is not excessive and impaired not the tight fit of the insulated conductor in the extended part 75 of the shark maui. Since the outside protruding Part of the conductor 61 continuously between the legs of the forked guide part 84 when it is pressed in is held, it is not or only slightly bent depending on the dimensions of the guide part 84, so that the There is no risk of the insulation breaking off or peeling off.

When the conductor 61 is pressed into the holding mouth 72, 75 and the connection part 37, the tool 80 sets finally with two steps 87, 88 on surface parts 91, 92 present on both sides of the pressure web 82, 83 the version 31 on both sides of the slots 72,76. As a result of this placement, the penetration depth of the tool is 80 safely limited (Fig. 2). This then ensures that individual conductors 61 each completely into the respective Connection part 37 and retaining mouth 75 are pressed in without the insulation 62 outside the notches 56 and 58 is damaged in the connection flanges. This also causes damage to the connecting webs 54.55 excluded.

Figures 9 to 16 show another embodiment of the invention, in which a larger number of connection tools are combined in one insert 180. The insert 180 serves to connect the conductors 61 of a complete row to the connector 30 at the same time, the insert then becoming part of the fully assembled connector. Of the Structure of the insert 180 is best shown in FIG. 8 to 12 evident.

The insert 180 is preferably molded in one piece from plastic. He assigns one of the contacts in a number of hold-down devices 181 corresponding to a row of the connector (FIGS. 12, 13). These have among themselves the same spacing and orientation as the terminal portions 37 of the contacts 33 of the connector 30. As an extension of the individual hold-down devices

A pressure web 182 runs in each case 181, which then merges into a narrower web part iSS additional pressure noses 18M corresponding to the parts 86 of the tool 80 may be provided. On the outside At the edge of the insert 180, the narrower parts 183 of the pressure webs 182 each merge into a recess, which forms a forked guide part 184 (Figs. 9, 13). The insert 180 thus has an integral one Series of tools, which have essentially the same shape as the individual tool 80 in the first embodiment of the invention.

At one end of the insert 180 there is a first one Holding arm 185 in the middle of the relevant narrow side downwards. At the other end of the insert 180 is a second holding arm 186 on which the guide parts 184 opposite end of the relevant narrow side (Fig. 9.10. U).

Thanks to the offset arrangement of the holding arms 185, 186, it is possible to use a single one

ίο

Form to form pairs of inserts, each for a connector equipped with two rows of contacts 30 can be used.

In assembling and connecting the conductors 61 to the connector 30, two inserts are 180.4 and 180Ö aligned in the in Fig. Manner shown in Figure 8 to the terminal parts 37 of the two rows of contacts of the connector. In order to press all of the conductors 61 simultaneously into the connection parts 37 of the one row of contacts of the connector 30, the insert 180/4 is then pressed down from the position shown in FIG. 8 or the insert 180 ° upwards. When pressing the inserts 180A. 180 ° to the socket 31 of the connector 30, the hold- downs 181 of the individual tools, which are integral with the insert, are placed on the inner end piece of the respectively assigned conductor 61 and hold it with its free end in the inner end of the connection part 37 of the respective contact 33 The pressure web 182 aligned on the respective conductor pushes it into the channel-shaped connecting part, into the notches of the connecting webs located therein and into the holding element formed as an extension of the outer end of the contact. During these processes, the outer parts of the individual conductors 61 are each between the The legs of the associated guide parts 184 are held and, in cooperation with these, are pressed into the respective retaining mouth.

In Fig. 15 and 16, connector 30 is shown assembled using inserts 180A and 180ß. The retaining arms 185 and 186 of the insert 180A are snapped into place on the opposite edge of the socket 31. Similarly, the support arms 185 and 186 of the other insert 180SS are engaged, so that they are respectively adjacent to the relevant support arm of the insert 180A. Thanks to their asymmetrical arrangement with respect to the width of the inserts, the holding arms 185 and 186 of the two inserts 180A and 180ß form a simple and secure anchorage for the inserts after they have performed their task of introducing the individual conductors 61 evenly and safely into the connection parts of the connector contacts , have met.

The holding arms 185, 186 of the inserts each have a bevel 190 at their free ends 189 , thanks to which they can slide unhindered along one another when the inserts are pressed onto the opposite sides of the connector socket. The inserts 180A and 180SS serve not only for connecting the conductor 61 to the connector 30, but subsequently form a cover for the terminal portions 37 and the depressed in these conductor parts (F i g. From 8.14 to 16).

An additional housing 188 can then be used in the direction of arrow A in FIG. 15 can be pushed onto the two inserts 180A and 180ß in order to hold them even more securely on the connector. Housing 188 can also be used to press inserts 180A, 180ß onto or into the connector. For this purpose, the two inserts are pressed into the connector socket 31 at one end, whereupon the housing 188 is pushed on from this end so that the inserts press the individual conductors 61 one after the other into the socket.

As shown in FIG. 14 recognizes, the overall dimensions of the connector 30 are not significantly increased by the inserts. The inserts can each be molded in one piece from a plastic. They allow considerable time savings when assembling or connecting a connector, in particular a connector with a larger number of conductor connections. When using the tool inserts 180 , large

·> Pay connect conductors in a matter of minutes to a connector by inserting the individual fiber ends in the respective terminal parts of the contacts, and then compresses the two inserts as described above and shown in Fig. 14 to 16. As in the first embodiment of the tool 80 , steps formed on both sides of the pressure webs 182 of the insert 180 serve to limit the depth of penetration of the webs into the connecting parts and into the neck mouths of the connector, so that a reliable electrical connection

1: 1 connection guaranteed, damage to the contacts and crushing or damage to the conductor insulation however, are excluded.

For this purpose 3 sheets of drawings

Claims (4)

Patent claims: • 1. Multipole connector with contacts for receiving and connecting each with an insulation sheathed conductor, each substantially extending in a longitudinal direction, formed from a sheet metal blank at its one end as an elongated, consisting of a bottom and two side parts Channel for receiving the free end of the conductor and at its other end is designed as an integrally connected plug-in contact spring, with a contact socket made of insulating material with a recess for receiving the channel, which at least partially rests on the side surfaces and the bottom surface of the channel, and with a support for the plug contact spring, characterized in that from the side walls ( 52, 53) of the channel (37) in pairs opposing sheet metal tabs (54, 55) are angled into the interior of the channel (37), the open side of the channel facing edges initially converging obliquely in the direction of the bottom part (51) v and form cutting edges to penetrate the conductor insulation (62) of an insulated conductor (16) that can be inserted parallel into the channel (37), and the edges of which are continuously thickened, the cut conductor insulation (62) pushing apart in the axial direction approach each other except for the thickness of the metallic conductor and diverge in a section adjoining this constriction in the direction of the bottom part (51), and that the contact socket (31) on the side of the channel (37) facing away from the plug contact spring has an open, resilient retaining mouth (72,75) for holding the insulated conductor (61,62) in place. 2. Tool for pressing the insulated conductor into the respective contact of a connector according to claim 1, characterized in that a hold-down device (81) for attaching to and exercising a holding pressure on the conductor (61,62) near its free end in one end of the channel (37) and a pressure web (82, 83) aligned with the hold-down device (81) for pressing in the conductor (61, 62) in the respective gap between the pair of opposing sheet metal tabs (56, 58) and are provided in the retaining mouth (72,73). 3. Tool according to claim 2, characterized in that it has a plurality of hold-down devices (81), a corresponding number of pressure bars (182, 183) and a corresponding number of insertion guides (184) , that the connector has multiple contacts, and
that several conductors can be connected at the same time by an insert tool ¹ ". 4. Tool according to claim 3, characterized in that that the insert tool (180) has devices (185, 186) for fastening it to the connector (30), that the means for attaching the insert tool represent a pair of holding arms (185, 186) engaging opposite ends of the connector (30) and each having a beveled free end (189, 190) so that the holding arms of two insert tools provided on the connector are at Do not hinder attaching the same, and that the insert tool is a secure holder or cover for a number of aij the Vei; -binder connected conductors (6I) are shown