Angular adjustment arrangement of pivot hinge

A pivot hinge for pivotally mounting a glass structure to a border frame, comprising:

• a joint body comprising two spaced apart joint walls defining a securing cavity therebetween for securely sandwiching an edge portion of said glass structure between said joint walls;
• a joint hub comprising a joint housing securely mounted between said joint walls within said securing cavity and a supporting shaft having a control portion rotatably extended from said joint housing and an adjusting portion extended out of said securing cavity, and
• an angular adjustment arrangement, comprising:
• a joint seat, having an adjustment sleeve, adapted for securely mounting to said border frame, wherein said adjusting portion of said supporting shaft is rotatably inserted into said adjustment sleeve in such a manner that said joint body is adapted to angularly move with respect to said joint seat in a rotatably movable manner for adjustably aligning said glass structure with respect to said border frame;
• and
• an angular adjustment locker provided at an outer side of said joint seat in a rotatably movable manner to securely lock up said supporting shaft within said adjustment sleeve in a rotatably movable manner for retaining an alignment of said glass structure in position with respect to said border frame so as to pivotally mount said glass structure to said border frame.