US-12623698-B2 - High-power plug connector system

US12623698B2US 12623698 B2US12623698 B2US 12623698B2US-12623698-B2

Abstract

An insulating element for a high-power plug connector system comprises at least one stop formation for limiting the distance of insertion into the high-power plug connector system and at least one cutout, which allows contact to be established between a receivable high-power contact and at least one electrically conductive bar. The insulating element has at least one retaining formation, which is located on the periphery of the insulating element, near the stop formation.

Inventors

Alexander Schönfeld
Bernard Schlegel
Christof Hermoni

Assignees

HARTING ELECTRIC STIFTUNG & CO. KG

Dates

Publication Date: 20260512
Application Date: 20210611
Priority Date: 20200622

Claims (12)

1 . An insulating body ( 1 ) for a high-power plug connector system ( 2 ), comprising: a radially outwardly projecting stop flange ( 12 ) for limiting an insertion distance into the high-power plug connector system ( 2 ); a recess ( 15 ) configured to receive a high-power contact ( 5 ) with an electrically conductive busbar ( 3 ); and a retaining lug ( 13 ) which projects radially outwardly from a circumference of the insulating body ( 1 ) axially adjacent to the stop flange ( 12 ), wherein the insulating body ( 1 ) is designed with a shaped element, which enlarges air gaps and creepage distances, at least on an interior side ( 11 ).
2 . The insulating body ( 1 ) as claimed in claim 1 , wherein the retaining lug ( 13 ) is shaped so as to be moved into positive engagement with a fastening shape ( 20 ) on a cable connection housing ( 4 ) of the high-power plug connector system ( 2 ).
3 . The insulating body ( 1 ) as claimed in claim 2 , wherein the retaining lug ( 13 ) is configured so that it is essentially congruent with the fastening shape ( 20 ).
4 . The insulating body ( 1 ) as claimed in claim 2 , wherein the retaining lug ( 13 ) passes through a passage opening ( 9 ) in the cable connection housing ( 4 ) for fastening purposes.
5 . The insulating body ( 1 ) as claimed in claim 2 , wherein the retaining lug ( 13 ) and the fastening shape ( 20 ) are oriented in an operational state in such a way that the recess ( 15 ) enables mounting of the busbar ( 3 ) to the high-power contact ( 5 ) accommodated by the insulating body ( 1 ).
6 . The insulating body ( 1 ) as claimed in claim 1 , wherein the shaped element is designed essentially as a corrugated shape ( 14 ).
7 . The insulating body ( 1 ) as claimed in claim 6 , wherein the corrugated shape ( 14 ) is formed from at least two circumferential, spaced-apart rings on an inside ( 11 ) of the insulating body ( 1 ).
8 . An insulating body ( 1 ) for a high-power plug connector system ( 2 ), comprising: a radially outwardly projecting stop flange ( 12 ) for limiting an insertion distance into the high-power plug connector system ( 2 ); a recess ( 15 ) configured to receive a high-power contact ( 5 ) with an electrically conductive busbar ( 3 ); and a retaining lug ( 13 ) which projects radially outwardly from a circumference of the insulating body ( 1 ) axially adjacent to the stop flange ( 12 ), wherein the retaining lug ( 13 ) is shaped so as to be moved into positive engagement with a fastening shape ( 20 ) on a cable connection housing ( 4 ) of the high-power plug connector system ( 2 ), wherein the retaining lug ( 13 ) passes through a passage opening ( 9 ) in the cable connection housing ( 4 ) for fastening purposes, wherein the retaining lug ( 13 ) passes through a cutout ( 21 ) in the cable connection housing ( 4 ) for fastening purposes, and wherein the cutout ( 21 ) is connected to the passage opening ( 9 ).
9 . The insulating body ( 1 ) as claimed in claim 8 , wherein the retaining lug ( 13 ) is configured so that it is essentially congruent with the cutout ( 21 ).
10 . The insulating body ( 1 ) as claimed in claim 8 , wherein the insulating body ( 1 ) is designed with a shaped element, which advantageously enlarges air gaps and creepage distances, at least on an interior side ( 11 ).
11 . A high-power electrical plug connector system ( 2 ), comprising: a cable connection housing ( 4 ) having an interior ( 8 ); at least two passage openings ( 9 ) in the cable connection housing ( 4 ) leading into the interior ( 8 ); a respective insulating body ( 1 ) extending through each of the at least two passage openings ( 9 ), the insulating body ( 1 ) having a radially outwardly projecting stop flange ( 12 ) for limiting an insertion distance through the respective passage opening ( 9 ), a recess ( 15 ) configured to receive a high-power contact ( 5 ) with an electrically conductive busbar ( 3 ), and a retaining lug ( 13 ) projecting radially outwardly from a circumference of the insulating body ( 1 ) axially adjacent to the stop flange ( 12 ), and a corrugated shape which enlarges air gaps and creepage distances the interior ( 8 ); and a fastening shape ( 20 ), arranged on each of the at least two passage openings ( 9 ) to receive the respective retaining lug ( 13 ) and positively fix the insulating body ( 1 ).
12 . The high-power plug connector system ( 2 ) as claimed in claim 11 , wherein each of the at least two passage openings ( 9 ) has at least one cutout ( 21 ) which is shaped at least congruently with the respective retaining lug ( 13 ) of the insulating body ( 1 ).

Description

TECHNICAL FIELD The disclosure relates to an insulating body for a high-power plug connector system. Such insulating bodies are used to insulate high-power cables in a high-power plug connector system from the surroundings which for safety reasons must not be connected to electrically conductive components. The focus here is particularly on applicability in underfloor regions of rail vehicles, in particular the connection of power cars and self-propelled railcars to one another. BACKGROUND Solutions are known in the prior art which enable the transmission and/or distribution of high electrical currents and/or voltage between vehicles or between vehicles with modules coupled to them. However, these solutions mostly provide disadvantageous and partially undetachable fixing of the corresponding contact elements. A particular disadvantage of the prior art is the inconvenient maintenance and generally also a high space requirement. However, especially in the case of highly stressed contact elements, such as for example in the field of rail transportation, because of the ever higher demands being made, there is a growing need for repair and maintenance, for example, owing to increased electrical erosion caused by the high current strengths of over 500 A. Insulating bodies are known in the prior art with a wide range of designs but there is no design which allows quick and simple assembly or mounting. Especially in the field of high-power plug connectors, it is desirable that the relatively large components allow simple handling during mounting, maintenance, and/or repair. The prior art presents no satisfactory solution in this field. In the priority application for the present application, a search by the German Patent and Trademark Office yielded the following prior art: DE 600 06 937 T2, DE 600 04 607 T2, DE 31 18 490 A1, and EP 0 863 579 A2. SUMMARY The disclosure provides an insulating body for a high-power plug connector system which particularly simple handling during assembly, maintenance, and/or repair. The disclosure further provides a high-power plug connector system which is designed for the use of an insulating body. One embodiment provides an insulating body for a high-power plug connector system having at least one stop shape for limiting the insertion distance into the high-power plug connector system and at least one recess which enables the contacting of an accommodatable high-power contact with at least one electrically conductive busbar, wherein the insulating body has at least one retaining shape which is situated on the circumference of the insulating body in the vicinity of the stop shape. The insulating body and the high-power plug connector are here designed in particular for current strengths equal to or greater than 80 amperes, preferably current strengths above 500 amperes, specifically current strengths in the region of 800 amperes. Current strengths in the region of 1000 amperes, or even current strengths in the region of 1200 amperes, can furthermore also be implemented. It is thus in particular ensured that use in the field of rail vehicles, in particular in the underfloor region of railcars, power cars, and self-propelled railcars is possible. With respect to the distance of the retaining shape from the stop shape, the phrase “in the vicinity” should be understood to be essentially a distance equal to or less than 25 mm. The phrase “in the vicinity” should in particular be understood to be a distance equal to or less than 10 mm. The phrase “in the vicinity” is preferably to be understood as a distance equal to or less than 5 mm. A preferred embodiment provides that the retaining shape is shaped so as to be moved into positive engagement with at least one fastening shape on a cable connection housing of the high-power plug connector system. This in particular means that the retaining shape is shaped as at least one protrusion on the insulating body. A retaining shape integrally formed radially here acts in a very particularly advantageous fashion, wherein the retaining shape can be brought into engagement with the fastening shape in the manner of a bayonet lock. In an expedient embodiment, the retaining shape is configured so that it is essentially congruent with the fastening shape. This means that the retaining shape passes, at least in one orientation, first through a passage opening in the cable connection housing. After the insulating body has been rotated, the retaining shape and the fastening shape are then brought into overlapping engagement. Further shaped elements can here ensure an interlocked connection. For this purpose, the retaining shape and the fastening shape can have, for example, a tongue and groove, cams, wedges, or comparable elements which engage with each other. In a clever embodiment, the retaining shape passes through at least one cutout in the cable connection housing for fastening purposes, wherein the cutout is connected to the passage opening. This mean