Arrangement of a housing with a cover

Abstract

A cover is designed such that it can be fastened to and removed from a housing without a tool, wherein the cover can be plugged by a protruding engagement section into the housing to a variable depth. The engagement section has a retaining device which has a U-shaped retaining spring which is mounted on the cover in the plug-in direction and is intended for the supporting clamping bearing against an inner wall of the housing for fastening purposes. The retaining spring has a mounting section and an outwardly pointing retaining arm, with a free space in between in which the clamping section engages in order to press apart the retaining spring and to prevent a movement of the retaining spring away from the clamping bearing against the inner wall of the housing.

1 . An arrangement of a housing with an associated cover with a protruding engagement section, wherein said cover is designed in a manner such that the cover can be fastened to and removed from said housing without the use of a tool, wherein said cover is insertable with said protruding engagement section into said housing to a variable depth for fastening purposes, wherein said engagement section has at least one retaining device for supporting the engagement section in a manner to be releasable without a tool, wherein said retaining device has a U-shaped retaining spring which is mounted movably in a plug-in direction on one of said cover and said engagement section and is intended for a supporting clamping bearing against an inner wall of said housing for fastening purposes, said retaining spring having a mounting section and an outwardly pointing retaining arm protruding therefrom, with a free space in between the mounting section and the retaining arm, said engagement section having a protruding clamping section for engagement in said free space in order to press apart said retaining spring and to prevent a movement of said retaining spring away from said clamping bearing against said inner wall of said housing. 
   
   
       2 . The arrangement according to  claim 1 , wherein said cover is rectangular and the arrangement comprises four said retaining devices, respectively in a vicinity of corners of said rectangular cover. 
   
   
       3 . The arrangement according to  claim 2 , wherein said retaining devices are provided on relatively longer longitudinal sides of said rectangular cover. 
   
   
       4 . The arrangement according to  claim 1 , wherein said housing on said inner wall thereof is free from movable parts. 
   
   
       5 . The arrangement according to  claim 4 , wherein an inner wall is formed on said housing without undercuts. 
   
   
       6 . The arrangement according to  claim 1 , wherein an inner wall of said housing is roughened on its surface. 
   
   
       7 . The arrangement according to  claim 1 , wherein said retaining spring is of approximately U-shape design in side view with said mounting section at one end of a U limb and said free space in a region of a base of said U shape, an other U limb being divided in two with one part being designed as an outwardly protruding retaining arm and another part being designed as a covering arm covering said free space to an inside. 
   
   
       8 . The arrangement according to  claim 1 , wherein said clamping section of said cover is designed to be at least one of wider and thicker at an end thereof for bearing in the free space of said U-shaped retaining spring. 
   
   
       9 . The arrangement according to  claim 8 , wherein said clamping section is approximately a same width as said free space at a base of said retaining spring. 
   
   
       10 . The arrangement according to  claim 1 , wherein said retaining spring is mounted in an insertion direction on a spindle that is displaceable longitudinally over a certain distance. 
   
   
       11 . Arrangement according to  claim 10 , wherein said spindle is retained in a tubular receptacle on said mounting section of said retaining spring. 
   
   
       12 . The arrangement according to  claim 11 , wherein said length of said clamping section corresponds approximately to said certain distance of said axial displaceability of said retaining spring, said clamping section and said retaining spring being designed in such a manner that, when said retaining spring is moved to a maximum extent towards said cover, said clamping section bears against a base of a U-shaped retaining spring. 
   
   
       13 . The arrangement according to  claim 7 , wherein said retaining spring and said clamping section are designed in such a manner that, as said clamping section begins to be pulled back in said free space of said retaining spring, said inwardly pointing covering arm is pressed away to said side in order to reinforce a pre-stressed bearing of said outwardly protruding retaining arm against said inner wall of said housing. 
   
   
       14 . The arrangement according to  claim 1 , wherein said clamping section of said cover is designed to be at least one of wider and thicker at an end thereof for bearing in the a free space of said U-shaped retaining spring against a base of said retaining spring. 
   
   
       15 . The arrangement according to  claim 14 , wherein said clamping section is approximately a same width as said free space at said base of said retaining spring.