| 摘要 |
In the edge of the body front plate (2) is fixed at least one tongue (5) projecting at right-angles from the front side, whose free end (10) is broader than the rest of it. In the one side wall (6) of the cover, in the vicinity of the lock plate (14) is arranged a slot (7) for the tongue (5). The slot length is less wide than the tongue free end (10), and the tongue (5) extends into the interior of the cover via the slot. The tongue, when viewed laterally, is U-shaped, with the part (8) opposite to the free end having apertures for fixture screws (12). The cover side wall (6) has apertures which in the cover open position are located centrally to the heads of the fixture screws (12). |
