Locking device for electrical shrouded pin plug to prevent unsanctioned or wrong use

摘要

The electrical connector plug 1 has a number of pins 2 that are shrouded within a sleeve section. In order to prevent unauthorised insertion of the plug in a socket, one of the pins is fitted with a mechanical interlock element that is in the form of a sleeve 3 that fits over the pin and presses into a elastic location in the plug body. The end of the sleeve is profiled 5 to be engaged by a key 9 for removal purposes.