Patent ID: 9711905
Date: 2017-07-18
CPC Classifications: H01R

Claim:
1. Reverse polarity protection for plug-in connectors comprising two intermateable plug-in connector parts, wherein the one plug-in connector part comprises a first coding element and the other plug-in connector part comprises a second coding element, wherein the two coding elements are matched to each other in such a manner that when the plug-in connector parts are arranged correctly they make a plug-in connection possible, and such that when the plug-in connector parts are not arranged correctly they prevent a plug-in connection, wherein the one coding element is a groove extending in the mating direction and having a trapezoid-shaped cross-section, wherein the other coding element is a coding rib that is extending in the mating direction and that is formed in a U-shaped manner with elastically bendable walls that are arranged in a U-shaped configuration, and wherein the coding rib ends in a trapezoid-shaped web that is located at the side of the mating surface and that has a cross-section that is adjusted to the trapezoid-shaped cross-section of the groove.