Sheet metal cover e.g. for fitting to electrical equipment housing or cabinet

摘要

A metal covering for fitting to a support has a lock (15) with a cam that is pivoted behind it and a control unit(17) at the front. The cam carries a key-bolt whereby the lock can engage the support at the rear. There is a device which can effect electrical continuity between the covering and the support. This is a metal flange which is rigidly fixed to the cam of the lock and which has two lobes in the general form of a U. One lobe lies behind the cover and the other lobe makes contact with the support by lying on the surface of the key-bolt on the side of it which is facing the covering.