The utility model discloses a just, mutual -inductor shell of dismantling, include: casing and end cover, wherein, be equipped with a hole groove in the casing, the end cover sets up the opening part on the casing and hinges mutually with the casing, is equipped with a fixed subassembly that is used for the stiff end lid on the end cover, fixed subassembly includes, set up in the lateral wall of end cover and casing in each other and switch on each other hold the chamber, hold the intracavity and be equipped with a dead lever, the one end that the dead lever is close to the casing is equipped with a fixture block, be equipped with on the lateral wall of casing and. Fixture block matched with draw -in groove, dead lever are located and are equipped with an elastic component between one side and the end cover of end cover, are equipped with a control lever on the casing, and the control lever is worn to locate in the draw -in groove. The switching of end cover can be made things convenient for through fixed subassembly more to maintenance convenient more when the inside part of casing goes wrong.