A retainer for flat appliances, approximately rectangular appliances, tablet computers or mobile telephones, the retainer comprising:
- a first holder comprising a first sidewall and a second sidewall opposite the first sidewall;
- a U-shaped receiving pocket connected to said first sidewall of said first holder, said receiving pocket structured to grip about one edge of the appliance when inserted into said first holder;
- a second holder, said second holder having a slide which is guided on said first holder in a linearly moveable manner in a sliding direction perpendicular to said first and second sidewalls and which can be locked at various positions, said second holder having a stop plate disposed on said slide at an end of said slide remote from said U-shaped receiving pocket, said stop plate being structured for abutment with an opposite edge of the appliance through displacement of said slide to be locked at that position together with said slide;
- a spring-mounted retaining clip having a hold-down retainer, wherein said retaining clip, with said hold-down retainer, is guided movably on said slide in said sliding direction of said slide;
- and
- a spring disposed, structured and dimensioned to preload said retaining clip against said stop plate of said second holder and to position said hold-down retainer at said stop plate so as to engage the opposite edge of the appliance and prevent the appliance from falling out of the retainer.