Housing fixation device having at least a protruding latch-spring

The housing, which is especially for a car radio, has an eccentric (3) which is directly rotatable by hand or by a tool to engage with a catch spring (2). By rotation of the eccentric the catch spring can be set in a locked position in which it protrudes from the casing and into an unlocked position in which it is recessed in the housing. A catch spring and eccentric are located on the right and left hand side of the housing. A cut-out, edge or hook is provided on the catch spring for engaging with the eccentric.