Explosion proof pressure resistant housing

An explosion-protected pressure-resistant housing comprising:

• a receiving part for electric operating components;
• and
• a closure part which closes the receiving part via a bayonet catch, said closure part having a cylindrical segment via which a flameproof joint is formed when said closure part is inserted into a cylindrical outer wall or a cylindrical outer wall segment of the receiving part;
• wherein one of the cylindrical segment of the closure part includes pins distributed across a periphery and the cylindrical outer wall and (ii) the cylindrical outer wall segment of the receiving part contains longitudinal slots which extend in a distributed manner across the periphery and in a plug direction, at the ends of which longitudinal slots short transverse slots which extend at right angles to a plug-in direction connect for receiving the pins;
• wherein a locking part is slid onto the closure part, said locking part having locking elements distributed across the periphery which engage in the longitudinal slots such that the pins are prevented from rotating out of the transverse slots;
• and
• wherein the locking part is fastened to the closure part via at least one fastener which is detachable exclusively via a tool.