| 摘要 |
<p>A removable apparatus group in a distribution and connection box is provided with an opening front cover 11 and is movable between three fixed closed positions 51, 52, 53, in which the group can be fixed using a closing device. This device comprises a rear spindle 20 provided with a closing device 21, which spindle is mounted on the chassis of the apparatus group, and a front spindle 30 which is mounted in a casing 40 which is attached to the cover. When the cover is closed the spindles 20, 30 are connected together. The rear spindle is caused by a spring 29 to turn towards a locked position. Using a key 60 which can be connected to the front spindle, the spindles can be turned against the action of the spring 29 into a released position, making possible movement of the group between the three closed positions. Such a movement can only be carried out when the cover 11 is closed. <IMAGE></p> |
