Metal-plated plastic electrical connector shield with rounded teeth to prevent relative rotation

摘要

A backshell 2 of an electrical connector has an outer nut 20 screwed onto the rear of the connector front assembly 1, which is formed with triangular locking teeth 13. An internal assembly 50 within the nut 20 prevents rotation of the backshell 2 on the connector when locked in position. The internal assembly 50 includes a rear cylinder 70 and a forward annular member 80 located between the cylinder and the front assembly 1. The cylinder 70 is of metal-plated plastics, which makes electrical connection at its rear end with screens 5 of cables 3 within the connector. The annular member 80 is of a metal and at its forward end has triangular teeth 85 that engage the teeth 13 at the rear of the front assembly 1. The rear of the annular member 80 and the forward end of the cylinder 70 both have rounded teeth 82 and 74 that engage with one another so as to avoid sharp edges on the cylinder that could lead to damage to its plating 170 caused by electrical transients.