CN110546823A

CN110546823A - Assembly for a plug connector part having a contact insert and a grounding element

Info

Publication number: CN110546823A
Application number: CN201880025968.6A
Authority: CN
Inventors: 丹尼斯·施普伦格; 曼纽尔·通克尔; 托马斯·沃尔廷; 彼得·克日扎尼亚克; 克日什托夫·奇恩特克
Original assignee: Phoenix Electric Co Ltd
Current assignee: Phoenix Contact GmbH and Co KG; Phoenix Electric Co Ltd
Priority date: 2017-04-18
Filing date: 2018-04-18
Publication date: 2019-12-06
Anticipated expiration: 2038-04-18
Also published as: DE202018006882U1; JP7174713B2; JP2020518099A; EP3613110A1; DE102017108162A1; CN110546823B; EP3613110B1; WO2018192962A1

Abstract

An assembly for plug connector parts (1, 3), comprising a plug housing (10, 30) and a contact insert (2, 4) which can be connected to the plug housing (10, 30), the contact insert having an insulating body (20, 40) made of an electrically insulating material, which insulating body forms a plug section (206, 406) which can be plug-connected in a plug-in direction (E) to a mating connector part (3, 1), and on which insulating body at least one electrical contact element (22, 42) is arranged for electrical contact with a corresponding mating contact element (42, 22) of the mating connector part (3, 1). Furthermore, a grounding element (23, 24, 25, 43, 44) is provided which is arranged on the insulating body (20, 40) and which has a housing contact section (231, 242, 252, 431, 442) and which is electrically connected to a grounding contact element (220, 230, 420, 430) arranged on the plug section (206, 406) for grounding contact with the mating plug connector part (4, 2), wherein the housing contact section (231, 242, 252, 431, 442) is adapted to be electrically contacted with the plug housing (10, 30) when the contact insert (2, 4) is connected to the plug housing (10, 30). In this way, an assembly for a plug connector part is provided which allows the use of a plug housing made of metal in a simple and advantageous manner.

Description

Assembly for a plug connector part having a contact insert and a grounding element

Technical Field

The invention relates to an assembly for a plug connector part according to the preamble of claim 1.

Background

The assembly comprises a plug housing and a contact insert which can be connected to the plug housing and has an insulating body made of an electrically insulating material. The insulator forms a plug-in section which can be plug-in connected with the mating connector part along a plug-in direction. Furthermore, one or several electrical contact elements, for example in the form of contact pins or contact sleeves, are arranged on the insulator for electrical contact with corresponding mating contact elements of a mating plug connector part and, when the plug connector part and the mating plug connector part are plug-connected together, are brought into contact with the mating contact elements.

The use of different modular insulating bodies in the plug housing of the plug connector part makes it possible to provide completely different plug connector parts with completely different plug surfaces and completely different types of contact elements.

In simple and lightweight plug connector parts, the plug housing can be made of plastic, while in particular in heavier and in particular stressed plug connector parts in use, plug housings made of metal are used. However, in the case of the use of plug housings made of metal, it is necessary to ensure that the electrical conductivity at the plug housing does not lead to disadvantages and ultimately to safety risks, in particular in the event of overvoltage.

In the connector part known from DE 202006003204U 1, the contact inserts are arranged in a plug housing, on which also ground contact elements (so-called PE contacts) are provided.

In the connector part known from DE 102010022690 a1, the insulator is enclosed in the connector housing. On this insulating body, a ground contact element is arranged which can be connected to the connector housing via a contact lug.

DE 102012016725 a1 discloses a connector part with a contact insert having a module frame for receiving a contact module. On this module frame, ground contact elements are arranged.

Disclosure of Invention

The object of the invention is to provide an assembly for a plug connector part which allows the use of a plug housing made of metal in a simple and advantageous manner.

The solution of the invention to achieve the object defined above is the subject matter of the features of claim 1.

In this context, the assembly has a grounding element arranged on the insulating body, which has a housing contact section and is electrically connected to the grounding contact element arranged on the plug section for grounding contact with the mating plug connector part, wherein the housing contact section is adapted to be brought into electrical contact with the plug housing when the contact insert is connected to the plug housing.

This allows the plug housing to be grounded with the contact insert inserted into the plug housing. This is effected by a grounding element, which has a housing contact section for electrical contacting of the plug housing on one side and is electrically connected to the grounding contact element on the other side, so that an electrical connection is produced between the plug housing and the grounding contact element by the grounding element. When the male connector part and the mating connector part are plugged together, the ground contact element, which can be connected to a ground line, makes ground contact with the mating connector part, so that the same ground potential is present at the male connector part and the mating connector part.

the insulator is preferably integrally formed, for example, from a plastic material. The insulating body functions in an electrically insulating manner and in this way insulates the contact elements arranged thereon from the plug housing, which is preferably formed from an electrically conductive metallic material.

By applying the grounding element, a grounding contact with the plug housing can be carried out in a simple manner. For example, the contact can be established automatically when the contact insert is inserted into the plug housing, so that no additional mounting steps are required for establishing the ground contact.

In one embodiment, the ground contact elements extend in the plugging direction and make ground contact with corresponding mating contact elements of a mating plug connector part in the plugging direction when the plug connector part is plug-connected to the mating plug connector part. Thus, when the plug connector part is plug-connected to the mating plug connector part, the ground contact elements touch the corresponding mating contacts, so that a ground contact is established.

In one embodiment, the housing contact section extends in a planar manner along a plane transverse to the plugging direction. The housing contact section thus provides a contact surface which, in the inserted contact insert, rests in a planar manner on the plug housing and establishes an electrical contact of the grounding element with the plug housing.

According to a further feature, at least one fastening point for mechanically fastening the contact insert to the plug housing can be arranged on the housing contact section. In this case, the housing contact section serves not only to electrically contact the grounding element with the plug housing, but also to mechanically fasten the contact insert with the plug housing.

The housing contact section can be embodied, for example, as a flange and projects from the insulating body. In this way, the electrical contact of the grounding element with the plug housing can be carried out via the housing contact section on the one hand, and the contact insert can be mechanically fastened in the plug housing on the other hand.

In a further embodiment, the housing contact section can be arranged in the region of a fastening section of the insulating body which extends transversely to the plug-in direction and can be operatively connected to the plug-in housing in a supporting manner. The fastening section of the insulating body can be formed, for example, as a shoulder (for example in the form of a step) on the insulating body and can be supported on the plug housing in a contact insert inserted into the plug housing, so that the contact insert can be mechanically fastened in the plug housing by means of the fastening section. The housing contact section is arranged in the region of the fastening section, which ensures that, in the contact insert inserted into the plug housing, an electrical contact is produced between the housing contact section of the grounding element and the plug housing. In this case, the housing contact section can be designed, for example, as a flange and fitted to the fastening section of the insulator. However, the housing contact section can also be inserted into the fastening section of the insulator.

Completely different technical variants of the grounding element and of the grounding contact element connected thereto can likewise be used.

In a first technical variant, the contact element can, for example, assume the additional function of a coding. The coding is a profiled element of the plug section of the plug connector part, which ensures that the plug connector part can only be plugged together with a mating plug connector part in a predetermined position and orientation. This coding can be established, for example, by connecting webs extending longitudinally in the plug-in direction, which are unevenly distributed over the plug-in section, so that a correct position and correct orientation of the plug connector part is forced on the corresponding counter-mating plug connector part.

In the case of a so-called male connector part, the ground contact element can, for example, extend on the outside of the plug section and project out of the plug section transversely to the plug direction in order to provide the coding, if the ground contact element assumes an additional function for the coding. In this case, the ground contact element preferably extends in the plug-in direction over the plug-in section, so that the ground contact element forms an overhanging web outside the plug-in section, which web engages with a corresponding inverse code on the side of the mating plug-in connector part during the plug-in connection.

Alternatively, in so-called female connector parts, the ground contact elements can also be arranged on the inside of the plug section in the region of the coding elements. The ground contact element is in turn a coded component and can extend, for example, on a radially inwardly projecting connecting lug on the plug section.

In this variant, the ground contact element is, for example, integrally formed on the ground element, so that it extends, for example, in the manner of a pin from the ground element along the plug section.

In a further technical variant, the ground contact element is enclosed by the plug section. In this case, the ground contact element is arranged, for example, as a separate element with respect to the ground element in the plug section and is, for example, mechanically held on the plug section, for example, snapped into the plug section. In this case, the ground contact elements can be designed, for example, as contact pins or contact sleeves and, when the male connector part is plug-connected to the counter-mating connector part, are connected in electrical contact with corresponding counter-mating contact elements of the counter-mating connector part.

In this case, the grounding element serves to electrically connect the grounding contact element arranged in the plug section to the plug housing surrounding the insulator. The grounding element can have, for example, a contact section for electrical connection to a grounding contact element, which is connected to the housing contact section via a connecting section. The contact section is electrically connected to the ground contact element and may, for example, have an opening through which the ground contact element passes. The connection section has, for example, the shape of a current bar, which establishes an electrically conductive connection between the contact section and the housing contact section of the grounding element.

in one embodiment, the contact section is bent relative to the connection section and/or the connection section is bent relative to the housing contact section. The housing contact section extends in a plane transverse to the plugging direction, while the connection section may extend, for example, in a plane which is tensioned by the plugging direction and a transverse direction oriented transverse to the plugging direction. The connecting section can also be bent and/or curved several times.

The connecting section can extend, for example, between the housing contact section and the contact section and in the process loop over a body section of the insulator, for example a body section which holds one or several contact elements of the contact insert. The housing contact section may, for example, extend in the manner of a flange transversely to the plugging direction. The connection section can, for example, establish a connection with the ground contact element between the housing contact section and the contact section in the manner of a current bar.

In one embodiment, the contact section for connecting the ground element to the ground contact element is designed to be elastic and to rest in electrical contact with the ground contact element. The contact section is thus constructed in the manner of an elastic spring tongue and serves to establish an electrical contact between the ground contact element and the ground element.

The grounding element can have, for example, two contact sections arranged opposite one another, for example, which receive the grounding contact element therebetween in order to establish an electrical contact with the grounding contact element.

In other embodiments, two grounding elements are provided, each having a housing contact section and a contact section connected to the housing contact section via a connecting section and arranged, for example, on opposite sides of the insulator. Wherein the grounding elements contact the grounding contact elements in common, in that the contact sections of the grounding elements receive the grounding contact elements therebetween and in this way establish an electrical contact of the grounding contact elements with both grounding elements.

Each grounding element can be arranged with its housing contact section on the fastening section of the insulator and supported on the corresponding fastening section.

In one embodiment, the grounding element is fitted as a fitting to the insulator of the contact insert. In the assembled position, the grounding element is held on the insulator, for example, in a form-fitting manner.

In other embodiments, the grounding element can be injection-molded with a (plastic) material of the insulating body, wherein in this case the housing contact section for contacting the plug housing and the contact section for contacting the grounding contact element are exposed in such a way that an electrical contact is established. Therefore, when producing the insulating body, the grounding element is insert-molded and injection-molded by injection molding of the material.

In yet another aspect, the grounding element may also be fabricated as a metal casting on an insulator. Such a metal casting may be made directly on the insulator by injecting a metal alloy into a recess on the insulator. For this purpose, for example, eutectic alloys with a lower melting temperature can be used. Alternatively, such a metal casting can be prefabricated and subsequently injection-or cast-encapsulated with a (plastic) material in order to form the insulation.

As other manufacturing processes that may optionally be used for manufacturing the grounding element, a Metal powder Injection molding process (MIM), from english Metal Injection molding, is also employed, in which fine Metal powder is mixed with an organic binder and shaped. The grounding element is compacted by subsequent sintering, so that a high-density solid metal component is obtained, which can subsequently be injection-molded with the material of the insulator.

In a further aspect, the grounding element may be disposed on a cover element connected to the insulator. The cover element can be fitted, for example, to the end of the insulating body facing away from the plug section and can be connected, for example, in a form-fitting manner, to the insulating body, for example, by means of fastening tabs which are connected to the insulating body in a snap-fit manner. The contact element can be held on the insulator and supported relative to the insulator, for example, by a cover element.

Wherein the grounding element can be held between the cover element and the insulator in a form-fitting manner. For this purpose, the grounding element can be accommodated on the cover element, for example, in such a way that, when the cover element is fitted onto the insulator, the grounding element is located between the cover element and the insulator so as to be fixed in position relative to the insulator.

Alternatively, the grounding element can be encapsulated, for example, by injection molding of the material of the cover element. In this case, the cover element is produced by injection molding (from plastic), wherein the ground element is insert-molded and the material of the cover element is injection-molded around the ground element.

The grounding element can project transversely to the plug-in direction relative to the cover element, for example, such that the housing contact section of the grounding element projects laterally and can abut against the inner wall of the plug-in housing in an electrically contacting manner when the contact insert is inserted into the plug-in housing.

in one embodiment, the ground element can have, for example, a connecting section extending transversely to the plugging direction, on which connecting section a housing contact section and a contact lug arranged on the connecting section for electrical connection to the ground contact element are arranged. In this case, the connecting section realizes a current bar for electrically connecting the housing contact section and the contact piece together. The contact lugs bear in a supporting manner against the corresponding ground contact elements, so that an electrical contact is made with the ground contact elements via the contact lugs.

In an advantageous embodiment, the housing contact section is elastic transversely to the plug-in direction. This makes it possible, in particular, for the housing contact section to slide on the inner wall of the plug housing when the contact insert is inserted into the plug housing in such a way that the housing contact section is in electrical contact with the plug housing.

The component is preferably a component of a plug connector part, in particular a component of a heavier plug connector part for use in a stressed environment. In this case, the plug connector part can be provided in a modular manner by selecting from completely different contact inserts, which are adapted in a specific manner to a specific use and for this purpose have suitable plug surfaces which contain the arrangement of the contact elements.

Drawings

The basic idea of the invention is explained in detail below with reference to the embodiments shown in the drawings.

Wherein:

Fig. 1 is a view of a contact insert for a plug connector part according to a first embodiment;

Fig. 2 is a view of a grounding element of the contact insert;

Fig. 3 is a view of an embodiment of a contact insert for a plug connector part complementary to the contact insert in fig. 1 and 2;

Fig. 4 is a view of a grounding element of the contact insert;

Fig. 5 is a view of a contact insert for a plug connector part according to a further embodiment;

Fig. 6 is a view of a grounding element of the contact insert;

FIG. 7 is another view of the contact insert;

Fig. 8 is a view of a contact insert for a plug connector component according to a further embodiment;

Fig. 9 is a view of a grounding element of the contact insert;

FIG. 10 is another view of the contact insert;

FIG. 11 is a view of yet another embodiment of a contact insert;

FIG. 12 is a view of yet another embodiment of a contact insert;

Fig. 13 is a view of a grounding element of the contact insert;

FIG. 14 is a schematic illustration of two plug connector parts which can be plug-interconnected in the plugging direction;

FIG. 15 is a view of yet another embodiment of a contact insert;

FIG. 16 is a view of the contact insert of FIG. 15 in an assembled state;

FIG. 17 is a view of yet another embodiment of a contact insert;

FIG. 18 is a view of the contact insert of FIG. 17 in an assembled state;

FIG. 19 is a view of yet another embodiment of a contact insert;

FIG. 20 is a view of the contact insert of FIG. 19 in an assembled state;

FIG. 21 is a view of yet another embodiment of a contact insert;

FIG. 22 is a view of the contact insert of FIG. 21 in an assembled state;

Fig. 23 is an isolated view of the grounding element of the contact insert.

Detailed Description

Fig. 14 shows a schematic view of two plug connector parts 1, 3, which can be plug-connected to one another in a plug direction E.

Each plug connector part 1, 3 has a plug housing 10, 30, in each of which a contact insert 2, 4 with contact elements arranged thereon is accommodated. One cable 12, 32 is connected to the plug housings 10, 30 via a cable outlet 11, 31 and is electrically connected to the contact elements of the corresponding contact insert 2, 4 in the plug housings 10, 30.

it should be noted here that the invention can be used not only in plug connector parts with manually operated plug housings, but also, for example, in plug connectors provided on electrical devices, for example, switchgear cabinets, in which the contact inserts are fixed, for example, on a device wall, for example, a switchgear cabinet wall.

Fig. 1 and 2 show a first exemplary embodiment of a contact insert 2, which is inserted into a plug housing 10 for forming a plug connector part 1 (see fig. 14).

The contact insert 2 has an insulator 20 made of an electrically insulating (plastic) material. The insulating body 20 forms a plug section 206 which, for connecting two corresponding plug connector parts 1, 3, can be connected to the plug section 406 of the complementary contact insert 4 shown in fig. 3 and 4 and which, for this purpose, can be inserted into the plug opening 400 of the plug section 406 of the contact insert 4 in the plug-in direction E.

A plug-in opening 200 is formed on the plug-in section 206, in which a contact element 22 is arranged, which is formed as a contact pin and is intended to make electrical contact with a contact element 42 of a contact bushing in the plug-in opening 400 of the plug-in section 406 of the contact insert 4.

On the lower section 203 of the insulating body 20, a cover element 21 is arranged, which is fastened to the lower section 203 in a form-fitting manner with a snap-in section 210 and is fixed to the lower section 203 by means of fastening tabs 211 (only one fastening tab 211 is visible in fig. 1; the cover element 21 has in contrast also a further fastening tab 211) by snapping the snap-in elements 204 on the lower section 203 into openings 212 in the fastening tabs 211).

Transversely to the plug section 206, a fastening section 202 for fastening the contact insert 2 in the corresponding plug housing 10 projects on one side.

On the other hand, a grounding element 23 is arranged on the insulating body 20, which is shown separately in fig. 2 and is supported against the insulating body 20 on an abutment lug 205 projecting beyond the plug section 206.

The grounding element 23 has a housing contact section 231, which projects as a flange section (with the grounding element 23 fitted to the insulating body 20) laterally beyond the plug section 206 and carries fastening openings 232, through which the contact insert 2 with the corresponding plug housing 10 can be fastened.

A surface section 233, in which a fastening opening 235 for fastening the grounding element 23 on the insulator 20 by means of a fastening element 236 in the form of a screw is arranged, and from which a form-fitting element 234 for snapping into the insulator 20 and an oppositely directed projection element 238 project towards the insulator 20, is connected to the housing contact section 231. The grounding element 23 is positionally correctly fixed relative to the insulator 20 by means of a form-fitting element 234. While the projecting element 238 serves to prevent the washer 239 (see fig. 1) from rotating together when the fastening element 236, which is constructed as a screw, is twisted.

The ground wire can be connected to the ground element 23 by connecting the contact sections 237 of the surface section 233, for example by crimping.

Alternatively, the ground wire can be fixed to the grounding element 23 by means of a fastening element 236, which is embodied as a screw.

The ground contact element 230 is integrally formed on the ground element 23, which, as shown in fig. 1, extends longitudinally along the plug section 206 and, with the ground element 23 arranged on the insulating body 20, is outside the plug section 206.

The ground contact element 230 has a dual function. First, ground contact element 230 serves to establish electrical contact with ground contact element 430 of ground element 43 of contact insert 4 when plug connector part 1 corresponding to contact insert 2 is plug-connected to plug connector part 3 corresponding to contact insert 4 (see fig. 3 and 4). This allows the grounding between the contact inserts 2, 4 to be achieved via the grounding contact elements 230. Secondly, the ground contact element 230 provides the contact insert 2 with a coding in a manner interacting with the coding element 201 (formed on the side of the plug section 206 facing away from the ground element 23), which coding enables the contact insert 2 and the corresponding contact insert 4 to be connected together in only one position and orientation. The encoding is provided by: the coding element 201 and the ground contact element 230 have different widths, so that the plug section 206 can only be inserted into the plug opening 400 if the coding element 201 is pushed into the plug section 406 of the opposite coding element 401, in the region of which the ground contact element 430 of the ground element 43 of the contact insert 4 is arranged, and the counter-coding element 407 of the ground contact element 230, which is formed by a connecting lug.

With the insertion of the contact insert 2 into the plug housing 10, the housing contact section 231 of the grounding element 23 abuts on the inside against the plug housing 10 in an electrically contacting manner, so that in the plug housing 10 made of metal, a grounding is carried out on the plug housing 10, so that the plug housing 10 is at ground potential. In this case, by fastening the housing contact section 231 directly to the plug housing 10 by means of the fastening opening 232, a planar abutment with the plug housing 10 is ensured, so that electrical contact is ensured.

The ground element 230 makes a ground contact with the complementary contact insert 4, which, when the connector parts 1, 3 are plug-connected together, slides onto the ground element 430 inside the plug-in opening 400 of the plug section 406 of the contact insert 4 and makes electrical contact.

Similar to the contact insert 2 in fig. 1 and 2, the contact insert 4 shown in fig. 3 and 4, which is complementary to the contact insert 2 in fig. 1 and 2, has a lower section 403, which is connected to a plug section 406 and on which the cover element 41 is arranged. The cover element 41 loops the lower section 403 with a loop section 410 and is connected in a snap-fit manner with the lower section 403 by means of fastening tabs 411 by snapping the snap elements 404 on this section 403 into snap openings 412 in the fastening tabs 411.

The grounding element 43 shown separately in fig. 4 corresponds in function to the grounding element 23 in fig. 2 and in particular has a housing contact section 431 with fastening openings 432 formed therein and a surface section 433 connecting the fastening sections 431 with fastening openings 435 formed therein. The form-fitting element 434 and the protruding element 438 protrude beyond the surface section 433. The ground wire can be connected to the grounding element 43 by means of the contact sections 437 of the connection surface sections 433, for example by means of crimping, wherein the ground wire can alternatively be connected to the grounding element 43 by means of a fastening element 436 in a screwed manner.

In the case of the arrangement of the grounding element 43 on the insulating body 40, a grounding contact element 430 which is integrally formed on the grounding element 43 is located inside the plug-in opening 400 in the region of the coding element 401, i.e. between the webs of the coding element 401 which extend longitudinally in the plug-in direction E and which are therefore part of the coding element 401. When the contact insert 4 is plugged together with the contact insert 2, the ground contact element 230 of the contact insert 2 slides up onto the ground element 430 of the contact insert 4 and an electrical ground connection is established between the contact inserts 2, 4.

In the exemplary embodiment of the contact insert 2 shown in fig. 5 to 7, a plug-in opening 200 for receiving a contact element is formed on the plug-in section 206 of the insulating body 20. The coding element 201 projects laterally beyond the plug section 206.

The lower section 203 adjoins the plug section 206, and the fastening section 202, which is in the form of a flange transverse to the plug direction E, projects beyond it transversely to the plug direction E in the transition region to the plug section 206. Fastening openings 207 are formed on the fastening section 202, which can be used to fasten the contact insert 2 in the corresponding plug-type connector housing 10.

the insulator 20 is made of an electrically insulating (plastic) material and in the embodiment shown is made by means of injection molding. Therein, as shown in the separate view in fig. 6, the grounding element 24 is injection-molded with the material of the insulator 20 in such a way that the housing contact section 242 is in the region of the fastening section 202 and, as shown in fig. 7, is exposed on the side of the fastening section 202 facing away from the plug section 206. In this way, electrical contact can be made with the plug housing 10 via the housing contact sections 242 in the contact insert 2 arranged in the corresponding plug housing 10.

The grounding element 24 has a connecting section 240 in the form of a current bar, on which a housing contact section 242 is arranged on one side and a contact section 245 for contacting the corresponding grounding contact element 220 is arranged on the other side. As shown in fig. 5 and 7, the housing contact section 242, which is connected to the connecting section 240 by the bent section 241, carries an opening 243, which is aligned with the corresponding fastening hole 207 of the corresponding fastening section 202 of the insulator 20. While the contact section 245, which is connected to the connection section 240 via the section 244, has an opening 246 through which the ground contact element 220 inserted into the plug opening 200 of the plug section 206 passes, so that an electrical contact with the ground element 24 is connected.

With the insertion of the contact insert 2 into the corresponding plug housing 10, the plug housing 10 is connected to the ground contact element 220 by the electrical contact abutment of the housing contact section 242 on the plug housing 10 and the electrical connection of the contact section 245 to the ground contact element 220, wherein a ground line can be connected to the ground contact element 220. When the contact insert 2 is plug-connected with a complementary counter-mating contact insert of a counter-mating connector part, the grounding contact element 220 also makes contact with the corresponding counter-mating contact element, so that the counter-mating connector part is grounded.

The grounding element 24 together with its sections 240, 242, 244, 245 can be manufactured, for example, as an integral plate bending. To manufacture the insulator 20, the grounding element 24 is embedded in an injection mold used to manufacture the insulator 20, and the grounding element is injection molded with the material of the insulator 20 when the insulator 20 is injection molded.

As shown in fig. 8 to 10, in a further embodiment of the contact insert 4, the grounding element 44 is formed as a metal casting on the plug section 406 of the insulating body 40 in such a way that the housing contact section 442 is located in the region of the fastening section 402 on the underside of the plug section 406 and is contacted from the outside in such a way that, in the contact insert 4 inserted into the corresponding plug housing 30, the housing contact section 442 bears in a planar manner against the plug housing 30 and makes electrical contact with the plug housing 30.

The ground element 44 has a connecting section 440 which connects the housing contact section 442 with a contact section 445 by means of which the ground element 44 is electrically connected with the corresponding ground contact element 420. Thus, an electrical connection is established between the plug housing 30 and the ground contact elements 420 by the ground elements 44, wherein the ground lines can in turn connect the ground contact elements 420 and, when plug-connected together with corresponding mating plug connector parts, make electrical contact with the mating plug connector parts, so that a common ground is achieved.

The fastening section 402 on the bottom side of the plug section 406 is constructed in the exemplary embodiment shown as a shoulder on the transition region to the lower section 403. As shown in fig. 10, the housing contact section 442 of the grounding element 44 is in the region of this fastening section 402.

In the illustrated embodiment, the grounding element 44 is fabricated as a metal casting. The grounding element 44 may be manufactured in the existing insulator 40, for example, by injecting a liquid tin alloy or other metal alloy into an opening provided in the insulator 40 at a relatively low melting temperature.

in the embodiment of the contact insert 2 shown in fig. 11, the grounding element 25 is fitted to the cover element 21 and is held between the cover element 21 and the insulating body 20 with the cover element 21 connected to the lower section 203 of the insulating body 20.

The cover element 21 has a bottom section 213 with an opening 214 formed therein for receiving the contact element 22. A support section 215 is formed on the opening 214, which projects beyond the base section 213 in the manner of a pin and serves to support the contact element 22.

the cover element 21 has a latching section 210, which, in the assembled position, also shown in fig. 1, latches onto the lower section 203. The fastening tabs 210 which project beyond the loop fastening section 210 have snap openings 212 which snap together in a snap-fit manner with the snap elements 204 on the lower section 203 in the assembled cover element 21 and thereby establish a form-fitting connection of the cover element 21 with the lower section 203.

the ground element 25 has a transversely extending, straight strip-shaped connecting section 250, from which the contact strips 251 project upward in the direction of the plug-in section 206 and on which a housing contact section 252 is arranged laterally. The ground element 25 with its connecting section 250 engages in the groove 217 in the base section 213 and engages with the housing contact section 252 in the opening 216 in the latching section 210 in such a way that the housing contact section 252 projects laterally beyond the cover element 21 in the direction of the surrounding plug housing 10.

The ground contact element 220 is inserted into the opening 214 in the bottom section 213 of the cover element 21 and rests in electrical contact with the contact lugs 251 of the ground element 25. In the contact insert 2 inserted into the plug housing 10, the ground element 25 is also in contact with the plug housing 10 via the housing contact section 252, so that the plug housing 10 is electrically connected to the ground contact element 220.

the ground line can in turn connect the ground contact elements 220, and the ground contact elements 220 also make contact with mating contact elements of mating plug connector parts when plug-connected together with corresponding mating plug connector parts, so that the same ground potential exists between the plug connector parts.

The embodiment of fig. 12 and 13 (without further explanation below) functions substantially the same as the embodiment described above in connection with fig. 11.

However, in contrast to the exemplary embodiment in fig. 11, in the exemplary embodiment in fig. 12 and 13, the grounding element 25 is not fitted to the cover element 21 in a form-fitting manner, but is encapsulated by the material of the cover element 21. The ground element 25 is thus held integrally on the cover element 21 in such a way that, as shown in fig. 12, the ground element 25 projects laterally with its housing contact section 252 relative to the cover element 21, so that an electrical contact of the ground element 25 with the plug housing 10 is made with the contact insert 2 inserted into the plug housing 10.

For the production, the grounding element 25 is inserted into the injection mold for producing the cover element 21 and is encapsulated with the material of the cover element 21 during the injection molding of the cover element 21.

The remainder is to be fully referred to the previous embodiments with respect to the example in fig. 11.

In the exemplary embodiment in fig. 11, 12 and 13, the housing contact section 252 is elastic transversely to the plug-in direction E, which makes it possible to insert the contact insert 2 simply into the corresponding plug-in housing 10, and furthermore, to bring the housing contact section 252 into abutment with the plug-in housing 10 under elastic prestress when the contact insert 2 is inserted.

Fig. 15 and 16 show a further embodiment of a contact insert 2 with an insulating body 20 and a cover element 21 fitted thereto. On the insulator 20, a contact element 22 and a ground contact element 220 are arranged. The insulating body 20 forms a plug section 206, by means of which the contact insert 2 can be plugged together with a corresponding mating plug connector part in the plugging direction E, in order in this way to bring the contact elements 22 and the ground contact elements 220 into electrical contact with the mating plug connector part.

Through the opening 214 in the cover element 21, the electrical wires can be connected to the contact element 22 and the ground wires can be connected to the ground contact element 220.

On the insulating body 20, a grounding element 26 is arranged, which is fitted with a housing contact section 261 in the form of a flange to a fastening section 202 in the form of a step on the insulating body 20 and has fastening points in the form of fastening openings 262, by means of which fastening points the contact insert 2 can be fixed in the plug-in housing 10 (see fig. 14), so that the housing contact section 261 makes electrical contact with the plug-in housing 10 and thus grounds the plug-in housing 10.

The housing contact section 261 is connected via the multiply bent connecting section 260 to contact sections 263 in the form of spring tongues which form receptacles for the ground contact element 220 and which rest in an electrically contacting manner on the ground contact element 220 in the assembled position (fig. 16). In this exemplary embodiment, the contact section 263 is designed to be elastic, so that it rests against the outer surface of the grounding contact element 220 in the assembled contact insert 2 under spring pretension and with reliable electrical contact.

The ground contact elements 220 are snapped together with the insulating body 20 in such a way that the ends of the ground contact elements 220 project into the region of the plug section 206 of the insulating body 20, so that they can be connected to corresponding mating plug connector parts. The grounding element 26 is arranged on the insulator 20 and loops with the connecting section 260 the body section 208 of the insulator 20, on which the contact element 22 is arranged, so that the grounding contact element 220 is contacted via the contact section 263 in a central position on the insulator 20.

In the embodiment of the contact insert 2 shown in fig. 17 and 18, two grounding elements 27 are arranged on both sides of the insulator 20 on the fastening section 202 of the insulator 20 so as to be supported on the insulator 20. Each grounding element 27 has a housing contact section 271 in the form of a flange which rests on the corresponding fastening section 202 of the insulating body 20 and has a fastening point in the form of a fastening opening 272 for fastening the contact insert 2 in the plug housing 10 (see fig. 14). Each housing contact section 271 is thus in electrical contact with the plug housing 10 with the contact insert 2 arranged in the plug housing 10.

From each housing contact section 271 there extend two connection sections 270, which are bent and bent several times towards the corresponding housing contact section 271 and carry contact sections 273 in the form of contact tabs, by means of which the ground contact element 220 arranged in the center of the insulator 20 is electrically contacted. The connecting section 270 loops around the body section 208 of the insulator 20 where the contact elements 22 are arranged.

In the assembled contact insert 2 (fig. 18), the contact sections 273 of the grounding elements 27 receive the grounding contact elements 220 therebetween, so as to jointly contact the grounding contact elements 220. Therein, each grounding element 27 has two contact sections 273, which together with the connecting section 270 are constructed to be resilient, so that a reliable electrical contact of the grounding contact element 220 is provided via the contact sections 273.

The insulating body 20 in turn forms a plug section 206, by means of which the contact insert 2 and the corresponding counter-mating plug connector part can be connected together in the plug direction E, so that the contact elements 22 make electrical contact with the ground contact elements 220. The grounding element 27 is arranged on the lower section 203 of the insulating body 20 on the side facing away from the plug section 106.

in the assembled contact insert 2, the covering element 21 is fitted to the insulating body 20 (see fig. 18). Through the opening 214 in the cover element 21, the electrical wires can be connected to the contact element 22 and the ground wires can be connected to the ground contact element 220.

In the exemplary embodiment of the contact insert 2 shown in fig. 19 and 20, two further grounding elements 28 are arranged on both sides of the insulating body 20 in order to electrically contact the grounding contact element 220 arranged in the center of the insulating body 20 via the contact sections 283. The grounding elements 28 each have a housing contact section 281 in the form of a flange with fastening points in the form of fastening openings 282 formed thereon. The housing contact section 281 rests on the fastening section 202 of the insulating body 20 and can fix the contact insert 2 in the corresponding plug housing 10 in such a way that the plug housing 10 is electrically grounded.

Each grounding element 28 has two connecting sections 280 which are bent several times and are bent toward the housing contact section 281 and each of which carries a contact section 283 in the form of an arcuate contact flange. The contact sections 283 of the grounding element 28 receive the grounding contact element 220 therebetween in the assembled contact insert 2 so as to contact the grounding contact element 220.

the connecting sections 280 each loop around a corresponding body section 208 of the insulator 22 to make electrical contact with the ground contact element 220 arranged in the center of the insulator 20.

In the assembled contact insert 2, the covering element 21 is fitted to the insulating body 20, as shown in fig. 20. The cover element 21 has openings 214 through which the wires can be connected to the contact elements 22 and the ground wire can be connected to the ground contact element 220.

In the exemplary embodiment of the contact insert 2 shown in fig. 21 to 23, the grounding element 29 is arranged on the insulating body 20. The grounding element 29 has a housing contact section 291 which rests on a fastening section 202 in the form of a step on the insulator 20 and carries fastening points in the form of fastening openings 292 by means of which the contact insert 2 can be fixed in the plug housing 10 in such a way that the grounding element 29 makes electrical contact with the plug housing 10 and thus grounds the plug housing 10.

Extending from the housing contact section 291 is a C-shaped connection section 290 which is fixedly connected to the ground contact element 220 at a bent end 293 remote from the housing contact section 291, for example by a clamping connection, a screw connection or a rivet connection or a soldered or welded connection.

Therefore, in this embodiment, the ground contact element 220 is fixedly connected to the ground element 29, so that the ground contact element 220 is also placed on the insulator 20 by fitting the ground element 29 to the insulator 20.

In the assembled position, the ground element 29 with its C-shaped connecting section 290 loops over the body section 208 of the insulating body 20, in which the contact element 22 is arranged.

On the side facing the housing contact section 291, a fastening element 296 in the form of a screw is arranged on the connection section 290, which fastening element is screwed into the threaded opening 295 of the connection section 290. Nut 297 is in threaded engagement with fastening element 296 in the form of a screw and is also supported relative to connecting section 290 by stop element 294, so that nut 297 cannot move with fastening element 296 in the form of a screw when it is twisted.

The ground wire can be connected to the ground element 29 by means of the fastening element 296 in order to provide a ground connection in this way on the ground element 29 and on the plug housing 10 to which the contact insert 2 is attached.

The insulating body 20 is fitted with a covering element 21 having openings 214 through which the wires can be connected to the contact elements 22.

The basic idea of the invention is not limited to the embodiments described above, but may in principle also be implemented in a completely different way.

different contact inserts can be assigned to a plug connector part of the type described here in a modular manner, wherein the electrical contacting and grounding of the (electrically conductive) plug housing of the plug connector part is carried out by means of a grounding element.

Such a plug connector part can be connected to a corresponding mating plug connector part by hand, but it can also be a component of an electrical device, for example a switch cabinet.

List of reference numerals

1-plug connector part

10 socket casing

11 cable outlet

12 cable

2 contact insert

20 insulating body

200 plug-in opening

201 coding element

202 fastening section

203 lower section

204 buckling element

205 abutting sheet

206 plug section

207 fastening part

208 body segment (base)

21 covering element

210 section of a buckle

211 fastening tab

212 snap-fit opening

213 bottom section

214 opening

215 support section

216 opening

217 groove

22 contact element

220 ground contact element

23 ground element

230 ground contact element

231 housing contact section

232 fastening opening

233 surface section

234 form-fitting element

235 fastening opening

236 fastening element (screw)

237 contact segment

238 protruding element

239 gasket

24 ground element

240 connecting section

241 bent section

242 shell contact section

243 fastening opening

244 protruding section

245 contact section

246 opening

25 ground element

250 connecting section

251 contact chip

252 housing contact section

26 ground element

260 connecting section

261 shell contact section

262 fastening opening

263 contact section

27 ground element

270 connecting section

271 casing contact section

272 fastening opening

273 contact section

28 ground element

280 connecting section

281 housing contact section

282 fastener openings

283 contact segment

29 ground element

290 connecting the segments

291 casing contact section

292 fastening opening

293 contact segment

294 stop member

295 fastening opening

296 fastening element

297 nut

3-plug connector part

30 plug-in housing

31 cable outlet

32 electric cable

4 contact insert

40 insulator

400 inserting opening

401 encoding element

402 fastening section

403 lower section

404 snap element

406 plug-in section

407 coding element

41 cover element

410 section of a buckle

411 fastening tab

412 buckling opening

42 contact element

420 ground contact element

43 ground element

430 ground contact element

431 housing contact section

432 fastening opening

433 surface segment

434 form fitting element

435 fastening opening

436 fastening element (screw)

437 contact zone

438 projecting element

439 washer

44 ground element

440 connecting segment

442 housing contact section

443 fastening opening

445 contact segment

E direction of insertion

Claims

1. an assembly for a plug connector part (1, 3), having a plug housing (10, 30) and a contact insert (2, 4) which can be connected to the plug housing (10, 30), the contact insert having an insulating body (20, 40) which is composed of an electrically insulating material and which forms a plug section (206, 406) which can be plug-connected in a plug-in direction (E) to a mating plug connector part (3, 1), and on which at least one electrical contact element (22, 42) for making electrical contact with a corresponding mating contact element (42, 22) of the mating plug connector part (3, 1) is arranged, characterized in that a grounding element (23, 24, 25, 26, 27, 28, 29, 43, 44) which is arranged on the insulating body (20, 40) has a housing contact section (231, 242, 252, 261, 271, 281, 291, 431, 442) and with a ground contact element (220, 230, 420, 430) arranged on the plug section (206, 406) for ground contact with a mating plug connector component (4, 2), wherein the housing contact section (231, 242, 252, 261, 271, 281, 291, 431, 442) is adapted to be electrically contacted with the plug housing (10, 30) in the case of a connection of the contact insert (2, 4) with the plug housing (10, 30).

2. The assembly of claim 1, wherein the insulator (20, 40) is integrally formed.

3. Assembly according to claim 1 or 2, characterized in that the ground contact element (220, 230, 420, 430) extends in the plugging direction (E) and is in ground contact with the counter-mating plug connector part (3, 1) in the plugging direction (E) upon a plug-in connection.

4. Assembly according to one of claims 1 to 3, characterized in that the housing contact sections (231, 242, 261, 271, 281, 291, 431, 442) extend planar along a plane transverse to the plugging direction (E).

5. The assembly according to one of the preceding claims, characterized in that the housing contact section (231, 242, 261, 271, 281, 291, 431, 442) has at least one fastening point (232, 243, 262, 272, 282, 292, 432, 443) for mechanical fastening of the contact insert (2, 4) on the plug housing (10, 30).

6. Assembly according to one of the preceding claims, characterized in that the housing contact section (242, 261, 271, 281, 291, 442) is arranged in the region of a fastening section (202, 402) of the insulating body (20, 40) which extends transversely to the plugging direction (E) and can be brought into supporting functional connection with the plug-in housing (10, 30).

7. Assembly according to one of claims 1 to 6, characterized in that the ground contact element (230) extends on the outside of the plug section (206) and projects out of the plug section (206) transversely to the plug direction (E) for coding or is arranged on the inside of the plug section (406) in the region of a coding element (401).

8. The assembly of claim 7, wherein the ground contact element (230, 430) is integrally formed to the ground element (23, 43).

9. The assembly according to any one of claims 1 to 6, characterized in that the ground contact element (220, 420) is enclosed by the plug section (206, 406).

10. The assembly according to claim 9, characterized in that the grounding contact element (220, 420) is arranged within the plug section (206, 406) as a separate element with respect to the grounding element (24, 25, 26, 27, 28, 29, 44).

11. The assembly according to claim 9 or 10, characterized in that the grounding element (220, 420) has a contact section (245, 263, 273, 283, 293, 445) for electrical connection with the grounding contact element (220, 420), which is connected with the housing contact section (242, 261, 271, 281, 291, 442) by a connection section (240, 260, 270, 280, 290, 440).

12. Assembly according to claim 11, characterized in that the contact section (245, 263, 273, 283, 293, 445) is bent over with respect to the connection section (240, 260, 270, 280, 290, 440) and/or the connection section (240, 260, 270, 280, 290, 440) is bent over with respect to the housing contact section (242, 261, 271, 281, 291, 443).

13. The assembly of claim 11 or 12, wherein the connecting section (260, 270, 280, 290) loops around the body section (208) of the insulator (20).

14. The assembly according to one of claims 11 to 13, characterized in that the contact section (263, 273, 283, 293) is constructed to be elastic and to abut in an electrical contact manner against the ground contact element (220).

15. Assembly according to one of claims 11 to 14, characterized in that two grounding elements (27, 28) are arranged on the insulating body (20) with one housing contact section (271, 281) and one contact section (273, 283) which is connected to the housing contact section (271, 281) by a connecting section (270, 280), respectively, which grounding elements jointly contact the grounding contact element (220).

16. Assembly according to any one of claims 1 to 15, characterized in that the grounding element (24) is injection-molded with the material of the insulator (20) or manufactured as a metal casting on the insulator (20).

17. Assembly according to any one of claims 1 to 15, characterized in that the grounding element (25) is arranged on a cover element (21) connected with the insulator (20).

18. The assembly according to claim 17, characterized in that the cover element (21) is fitted to the insulator (20) at the end facing away from the plug section (206).

19. Assembly according to claim 17 or 18, characterized in that the grounding element (25) is held between the cover element (21) and the insulator (20).

20. Assembly according to claim 17 or 18, characterized in that the grounding element (25) is injection-moulded by the material of the cover element (21).

21. Assembly according to one of claims 17 to 20, characterized in that a housing contact section (252) of the grounding element (25) projects transversely to the plugging direction (E) relative to the cover element (21).

22. Assembly according to one of claims 17 to 21, characterized in that the grounding element (25) has a connection section (250) which extends transversely to the plugging direction (E) and on which the housing contact section (252) and contact tabs (251) arranged on the connection section (250) for electrical connection with the grounding contact element (220) are arranged.

23. Assembly according to one of the preceding claims, characterized in that the housing contact section (252) is elastic transversely to the plugging direction (E).