Pull-out keyboard assembly technical field

A pull-out keyboard assembly, comprising:

• a base bracket mechanism, comprising a base body, wherein the base body is respectively provided with sliding grooves at two opposite ends;
• a rotating shaft bracket assembly movably arranged on the base body;
• and at least one restraint block and at least one first magnetic member respectively fixedly arranged on the base body;
• a keyboard mechanism, comprising a keyboard assembly, wherein two ends of the keyboard assembly are respectively movably arranged in corresponding sliding grooves of the provided sliding grooves;
• and multiple ball assemblies that are respectively arranged on opposite sides of the keyboard assembly and that come into contact with inner walls of the sliding grooves, wherein the keyboard assembly is fixedly provided with at least one restraint magnetic set, the restraint magnetic set comprises multiple second magnetic members arranged in parallel along a Y-axis direction, and the multiple second magnetic members respectively mutually attract corresponding first magnetic members of the at least one first magnetic members, to implement fixation of different relative positions of the keyboard mechanism with respect to the base bracket mechanism;
• and
• a protective housing, arranged on the rotating shaft bracket assembly, wherein the protective housing can be snap-fitted onto the keyboard mechanism through the rotating shaft bracket assembly, and a tablet computer is detachably arranged in the protective housing.