A hand held mobile terminal includes at least one torque cell for
facilitating a torsionally stiff housing structure. The torque cell
includes a plurality of first locking members located around a perimeter
of a first housing and a plurality of second locking members located
around a perimeter of a second housing. The first and second locking
members are slidably engageable with each other so as to create a
plurality of interlocking joints around the perimeter of the torque cell.
Accordingly, the torque cell structure provides several advantages over
the conventional mobile terminal housing, such as: better torsional
rigidity, simplified assembly, improved volumetric efficiency, reduced
need for shock absorbing materials, lighter overall weight, decoupling of
impact loads, and mitigation of stress concentrations.